PIERS 58, 59 AND 60 TIMBER PILING INSPECTION (WC1741) 1 I I ..3Seattle Structural PS Inc. December 201 6 Bil 9. Civil and Structural Engineering 3131 Elliott Avenue, Suite 600A Seattle, WA 98121 Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) PIERS 58, 59 AND 60 TIMBER PILING INSPECTION (WC1741) December 2016 Prepared For: City of Seattle Department of Parks and Recreation Planning and Development Division 800 Maynard Avenue S, 3rd Floor Seattle, WA 98134-1336 David Graves Project Manager (206) 684-7048 david.graves@seattle.gov Prepared By: Seattle Structural PS Inc. 3131 Elliott Avenue, Suite 600A Seattle, WA 98121 Howard Burton, P.E., S.E., President (206)343-3000 HBurton@SeattleStructural.com Mike Braun, P.E., S.E., Project Manager (206) 343-3000 MBraun@SeattleStructural.com This condition assessment of Piers 58, 59 and 60 summarized within this report was authorized on July 20, 2016 under Seattle Parks & Recreation Department, Planning & Development Division, Consultant Roster Program Agreement No. PR16-020: “Piers 58, 59 and 60 Timber Piling Inspection (WC1741)”. December 2016 Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) TABLE OF CONTENTS EXECUTIVE SUMMARY ........................................................................................................................... 1 PHOTOGRAPHS ........................................................................................................................................ 4 INTRODUCTION ......................................................................................................................................... 8 STRUCTURAL DESCRIPTIONS ................................................................................................................. 8 PRIOR INVESTIGATIONS ......................................................................................................................... 10 SCOPE OF OBSERVATIONS.................................................................................................................... 11 OBSERVATION METHODS ....................................................................................................................... 11 OBSERVATIONS ....................................................................................................................................... 11 Pier 58 ........................................................................................................................................... 11 Pier 59 ........................................................................................................................................... 13 Pier 60 ........................................................................................................................................... 13 CONCLUSIONS AND RECOMMENDATIONS .......................................................................................... 14 APPENDICES A. Pier 58 & 60 Timber Pile Rating Plans.................................................................................. A-1 B. Pier 58 Timber Pile Rating Data ........................................................................................... B-1 C. Pier 60 Timber Pile Rating Data ........................................................................................... C-1 D. Pier 58 Load Test Displacements ......................................................................................... D-1 E. Piers 59 Projection of Steel “Can” of Replacement Piles Above Mudline ............................ E-1 F. Piers 58 & 60 Global Diving Timber Pile Inspection Logs .................................................... F-1 December 2016 EXECUTIVE SUMMARY This 2016 report reviews timber piles that support concrete and timber portions of Piers 58, 59 and 60. The Seattle Department of Construction and Inspections (SDCI) requires an ongoing maintenance program of all timber piers in the Central Waterfront in accordance with Director’s Rule 7-90. This rule requires that, as a minimum, an updated comprehensive investigation of the pier’s timber structure every five years. The last report was completed in 2011 by Seattle Structural PS Inc. The 2006 Tinnea Report outlined recommendations that, if followed, would have returned the structure to a “near-design” level of safety. The 2006 report also allowed for the alternate imposition of load limits (without repairs) that provided “reasonably safe” conditions. Due to changes in the Central Waterfront area and seawall upgrades, as well as financial considerations, the city opted to forego repairs and imposed load restrictions, with the recognition that there was an increased risk of partial collapse in the event of an earthquake or large wind event. Recently there has been planning for the replacement of Waterfront Park with new public walks and water access. We expect that this new facility will be in place within the next ten years. With this in mind, we understand that the city intends to continue with the policy of maintenance deferral of the existing structure if possible without upgrades. Pier 58 The 341 timber piles supporting the main timber-deck portions of Pier 58 provide the vertical load-carrying capacity for Pier 58 as well as lateral resistance to earthquake, wind and wave actions. Over time the creosote treatment has washed out of the timber and the piles have lost effectiveness in limiting marine borer attack. Once a pile develops a large number of worm-holes the rate of decay accelerates and the pile will eventually fail. December 2016 1 The standard manner of rating timber piles is to assign a “percentage capacity remaining”. A new pile will have a 100% rating. Once damage starts to accumulate the piles’ ratings diminish. The Pier 58 pile ratings over the past ten years and projected forward 5 years are shown here: Approximate Average Pile Ratings Year Observed 100% 90% 75% 50% 25% 0% 2000 84 (25%) 204 (60%) 37 (11%) 10 (3%) 4 (1%) 2 (1%) 2006 13 (4%) 179 (52%) 112 (33%) 28 (8%) 7 (2%) 2 (1%) 2011 0 (0%) 52 (15%) 161 (47%) 109 (32%) 17 (5%) 2 (1%) 2016 0 (0%) 0 (0%) 3 (1%) 160 (47%) 160 (47%) 18 (5%) 2021 (projected) 0 (0%) 0 (0%) 0 (0%) 68 (20%) 239 (70%) 34 (10%) Percentages that do not add up to 100% are due to rounding. The quantity of piles at each rating is extrapolated for easier comparison when only a representative sample of piles were inspected that year. Refer to the table in the body of the report for actual quantities. The original piles had a rated live load capacity of around 20 tons and were capable of supporting 200 psf on the deck area. Even when deteriorated to a 25% rating they retain significant axial capacity (although less than the code-required 100 psf). In order to maintain the load carrying integrity of the pier, piles should be replaced when they reach a rating of 25%. The original design of Waterfront Park would not meet today’s seismic code requirements. As both the timber and non-timber piles decay, the risk of collapse as a result of a seismic or high wind/wave event increases. Since most of Pier 58’s lateral capacity comes from the Monotube and steel piles, though, the incremental loss of lateral capacity in the timber piles is unlikely to significantly increase the likelihood of a general sway-type collapse (the expected failure is a localized vertical collapse). In 2006 there were a total of 9 piles (3%) that had a rating at or below 25%. In 2011 there are approximately 19 piles (6%). In 2016 there are 178 piles (52%). Within the next five years (by 2021) it is reasonable to expect that one or more of these piles will fail. We have studied the consequence of a failed single pile and have determined that the most likely outcome of this is a degree of sagging and reduced live-load capacity. As long as there are no large concentrated loads (from a vehicle, for instance) we do not expect that a collapse will occur as a result of a single pile failure. Our calculations suggest that the actual live load capacity is on the order of 20 psf when a single pile is removed; although this is less than the code-prescribed 100-psf this reduced capacity does not mean that a collapse will occur. In our reports from 2006 and 2011 we cautioned the city that an eventual failure was likely to occur that would force the closing of the park to public access. Based on the recent successful load (despite the poor pile ratings), we are encouraged that the city can continue to use the park while the full replacement is planned. In order to continue to utilize the pier as park public space we recommend the following actions: 1. Maintain a ban on all vehicular traffic. Install steel bollards at the access points. If access is needed require a review by a structural engineer prior to accessing. The bollard design has been completed and is attached to this report. December 2016 2 2. Do not permit large gatherings of people for events. 3. Perform periodic load tests (preferably on an annual basis) of piles testing to 6,000# (approx 30 psf) to identify any failed piles. A base-line load test was successfully completed this year (results are attached to this report.) 4. Perform periodic row-throughs (preferably on an annual basis) to look for pile damage. If a failed pile is identified (as a result of the load tests or row-throughs) then access to that portion of the pier will need to be restricted. Given the current condition of the pier it is possible that the piling will pass this test for the next five years although the city must be prepared to take action if a pile failure occurs. In the event of a high wind/wave event or an earthquake the pier could experience a partial collapse. The likely mode of failure will be a localized collapse and/or leaning. Many of the structural components continue to perform well despite deferred maintenance. The timber deck and framed sub-structure condition of Pier 58 has not appreciably degraded since 2006. Pier 59 Timber piles at Pier 59 are not a major concern. All timber piles needed for vertical support of the timber building were replaced (posted) with steel pipe piles in 2005. Some timber piles were retained as extra piles and are not required for vertical or lateral support. Lateral support for Pier 59 is provided by 140 of the 146 large-diameter steel pipe piles installed in 2005. A portion of the stub piles were inspected and, although some evidence of soil erosion was found, no stubs were exposed. We expect the Pier 59 pile system to continue to perform as designed. We reviewed a 2015 report by BergerABAM for the Seattle Aquarium. There were no significant areas for immediate concern. Pier 60 Some modifications have been performed at Pier 60 as part of the seawall construction which reduced the timber deck area and the number of timber piles. We inspected the 20 remaining timber piles and found these piles are in fair to poor condition. Replacement of piles will be needed within 10-20 year. Conclusions and Recommendations It is reasonable to allow continued public access to Pier 58 Waterfront Park but with no vehicle access. Load testing and row-through observation should be performed annually. The city should anticipate within five years that portions of the park may need to be closed due to a failed load test, in response to an earthquake or high wind/wave event, or because of the spontaneous loss of a pile due to deterioration. By continuing to defer maintenance, the practicality of repairing the timber pier to a usable state is diminishing. The estimated cost of restoring the pier structure to near-code condition in 2006 was $0.7M-$1.5M. Today the cost of restoration is much higher due to escalation and continued decay, and is likely not practical. Full replacement is the best long term solution. December 2016 3 Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) Photo 1: Pier 58 general condition of timber structure Photo 2: Pier 58 general condition of timber structure December 2016 4 Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) Photo 3: Pier 59 crushed timber beam at pile N2-28 (looking north) Photo 4: December 2016 Pier 59 crushed timber beam at pile N2-29 (looking north) 5 Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) Photo 5: East side of Pier 60 at the Triangle Photo 6: December 2016 East side of Pier 60 at the Triangle 6 Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) Photo 7: East side of Pier 60 recent modifications (looking south) Photo 8: East side of Pier 60 recent modifications (looking north) December 2016 7 INTRODUCTION Seattle Department of Construction and Inspections (SDCI) Director’s Rule 7-90 calls for a maintenance program for timber piers based on a comprehensive investigation that includes observation and evaluation of a representative sample of caps, stringers, and piles, although the number of piles need not exceed 20% of the total. Seattle Structural was contracted by the Seattle Parks and Recreation Department (PRD) to inspect all timber piling of Pier 58 (Waterfront Park), Pier 59 (Aquarium), and Pier 60 (along Alaskan Way and the Triangle). An inspection of the timber stringers and pile caps at Piers 58 and 60, an inspection of pile stub protection at Pier 59, and a gravity load test of Pier 58 also were performed. Seattle Structural engineers performed a “row-by” inspection of the timber sub-structures and of timber piles above the waterline. Global Salvage & Diving (Global Diving) was sub-contracted to observe timber piles below the waterline. The following personnel performed the inspections. • • • • • Howard Burton, PE, SE: 35 years of structural engineering experience and 15 years of marine structures experience Michael Braun, PE, SE: 36 years of structural engineering experience and 11 years of marine structures experience Simon Cleasby, Global Diving & Salvage: licensed commercial diver for 26 years Bradley Peterson, Global Diving & Salvage: licensed commercial diver for 10 years Christopher Hume, Global Diving & Salvage: licensed commercial diver for 6 years STRUCTURE DESCRIPTIONS Pier 58 Pier 58 was built in 1974 using several different construction types. The timber portion is supported by 341 timber piles and accounts for 70% of the area. North and south terraces are cast-in-place (CIP) concrete supported by concrete-filled steel Monotube piles. The concrete apron adjacent to the north terrace is supported by steel H-piles along the seawall and timber piles elsewhere. The concrete promenade along the seawall also is supported by steel H-piles along the seawall and timber piles at the transition to timber portions of Pier 58. The original construction included bridges from the north and south terraces to respective observation towers. The bridges and towers were steel structures supported by timber piles. The north bridge and tower were removed in 2006 when Pier 59 was renovated. The south bridge and tower were removed around 2012. The timber piles and pile caps which had supported the towers remain. Pier 59 Pier 59 underwent a major structural renovation in 2005. The eastern (landward) one-third of the old timber building was demolished and replaced with concrete construction at the first level, timber at level 2 and the roof, and steel pipe pile supports. The new level 1 concrete construction consists of precast concrete panels supported by CIP concrete pile caps and topping slab. The old timber aprons on the north, south and west sides of the pier also were demolished and replaced with the same type of steel pile supported concrete construction. A pump house and an electric transformer vault at the south apron are CIP concrete slabs supported by steel pipe piles. December 2016 8 Pier 59 has a total of 146 steel pipe piles in the following sizes. • • • • (39) HSS 30x0.750 (46) HSS 24x0.625 (55) HSS 18x0.500 (6) HSS 12x0.500 Pre-existing concrete and steel piles plus replacement steel piles support the timber structure at the western two-thirds of the building. All timber piles required to help support the existing timber structure were replaced (posted) with 10-inch steel pipe piles. The replacement pipe pile thicknesses are 3/8” or ½” depending on the load and pile length. The bottom of the steel replacement piles have an inverted steel “can” which fits over and bears on top of the timber pile stub. The stub was cut off at a depth below mudline where the Bankia destruction ended due to lack of oxygen. Some creosote and Cheminite treated timber piles in relatively good condition were kept as extra piles. Their condition is not critical because they are not needed to support the timber structure. Other timber piles were cut off 4 to 6-feet above mudline and retained as stubs for future replacement piles. The pile types and quantities are shown in the following table. Table 1: Pile Types and Quantities Supporting the Pre-existing Timber Building Action Pile Type N New replacement (posted) steel piles K Kept pre-existing piles No. of Piles 124 Concrete or Colby piles 47 Steel piles 31 Sub-Total 78 SUB-TOTAL (new and kept piles) E Extra piles Creosote treated timber piles 35 Cheminite timber piles 15 PVC clad creosote piles 7 Concrete piles 1 Sub-Total TOTAL (new, kept and extra piles) S 202 Stub Piles 58 260 53 The timber stringers, beams and building perimeter cap beams are supported by 12” deep steel channels both sides of the pre-existing timber pile caps. The steel channels are supported by the steel replacement piles and pre-existing concrete and steel piles mentioned previously. Similar to the extra timber piles, the condition of the pre-existing timber pile caps is not critical because they are not being used to support load. The bolts through the steel channels and the pre-existing timber pile caps are not transferring load to the channels. Timber stringers and beams transfer their load directly to the steel channels in bearing. December 2016 9 The lateral force resisting system at level 1 consists of steel pipe pile and concrete pile cap moment frames. Steel replacement piles and pre-existing piles at the western two-thirds of the timber building support gravity loads only. Pier 60 Along Alaskan Way and the Triangle Pier 60 was built in 1974. It is predominantly a concrete structure consisting of CIP concrete pile caps, precast concrete slabs, and CIP concrete topping slabs all supported by prestressed concrete piles . Walls and water tank exhibits are CIP concrete. The roof is framed with timber trusses and decking. A timber walkway around the west (waterward) side was replaced by a steel pipe pile supported concrete walkway in 2012. Only two small areas of timber piling and timber sub-structure remain: the promenade on the northeast side between the concrete structure and the Alaskan Way seawall and the promenade on the east side which forms one side of the open water “Triangle” with Pier 59 and Alaskan Way. PRIOR INVESTIGATIONS Pier 58 prior condition studies and the repair history known to us are listed below. • • • • • • • • • 1989 – Arnold, Arnold & Associates condition assessment report 1992 – CH2M Hill condition assessment report 1996 – Sprinkler system replacement in accordance with drawings by Buffalo Design (architect) and Berona/Langebartel (sprinkler engineer) 1998-1999 – Tinnea, Echelon, and Tetra Tech condition assessment report 2000 – Echelon and Reid Middleton condition assessment report 2004 – Repairs to North Terrace in accordance with 1998-1999 report by Tinnea, et al. 2006 – Tinnea and Seattle Structural condition assessment report 2011 – Seattle Structural condition assessment report 2014 – Echelon underdeck inspection along seawall Pier 59 prior condition investigations and the repair history known to us are listed below. • • • 2000 – Echelon and Reid Middleton condition assessment report 2005 – Demo and reconstruction of east end and perimeter aprons, and pile replacement under west end timber structure 2015 – Tinnea and BergerABAM condition assessment report Pier 60 prior condition investigations and the repair history known to us are listed below. • • 2006 – Tinnea and Seattle Structural condition assessment report 2015 – Tinnea and BergerABAM condition assessment report The 2014 report by Echelon was prepared for the Mortenson Manson Joint Venture (MMJV). Echelon inspected all piles at Pier 58 within 20 feet of the seawall construction which was ongoing at the time of the inspection. Seventy-six (76) of the inspected piles were timber, which is 22% of all timber piles supporting Pier 58. This inspection was a baseline for monitoring purposes and the piles inspected were not intended to be representative of all piles. December 2016 10 The purpose of the investigation by Tinnea & Associates/BergerABAM in 2015 was to assess the general condition of the piles, pile caps, and level 1 structure of Piers 59 and 60 for the Seattle Aquarium. The scope involved all construction types including reinforced concrete, steel, and timber. BergerABAM inspected a representative sample in most areas plus all of the timber sub-structure of Pier 59. SCOPE OF OBSERVATIONS Global Diving inspected 341 timber piles at Pier 58 and 20 timber piles at Pier 60 and the Triangle on August 30-31 and September 15, 2016. On September 9, 2016 Seattle Structural observed all of the same piles above the waterline and the pile caps except the portion between Pier 60 and Alaskan Way which was blocked by floating debris. Pier 59 is supported predominantly by steel and concrete piles and steel channel pile caps. No timber piles or pile caps were inspected except for two timber beams at the west end. OBSERVATION METHODS Seattle Structural engineers performed a visual observation of timber piles and sub-structure from a small boat. The Global Diving divers performed a Level 1 inspection in accordance with “Underwater Inspection Criteria” by the Naval Facilities Engineering Service Center. This consisted of a top-to-mudline visual inspection on all sides and sounding with a hammer especially at suspect areas. The divers rated the capacity remaining for each pile in increments of 5 percentage points. The reported pile ratings are rounded off in increments of 25 percentage points in accordance with standard procedure. The diver’s helmet camera and microphone were recorded on DVD and were monitored in real time onboard the dive boat by a Seattle Structural engineer. The pile labeling system for Pier 58 in this report conforms to Seattle Parks & Recreation records as reported by Echelon in 2000 and 2014. The pile label system used in 2011 is also shown for reference. The pile labeling system for Pier 59 is the same as used on the 2005 piling replacement drawings. The pile labeling system for Pier 60 is the same as the 2011 report. The Seattle Parks & Recreation Department records were not available. The system used by BergerABAM for Pier 60 is also shown for reference. OBSERVATIONS Pier 58 Timber Piles Seattle Structural and Global Diving inspected all 341 timber piles at Pier 58 in 2016. The pile ratings are shown graphically on plans in Appendix A and in tables in Appendix B. Prior year’s ratings are shown as well as this year’s. In a pile-by-pile comparison, there are piles with better ratings this year compared to prior years, which can be attributed to the subjective method of rating timber piles. The piles are rated based on an inspection of the exterior while damage is often internal from the inter tidal zone down to a foot below the mudline. The video equipment failed during the first of three days of diving and was repaired before the third day. Audio was always available and the diver’s verbal description of his observations were recorded manually on dive inspection logs whether video was available or not. December 2016 11 Seventy seven (77) piles along the seawall that Global Diving inspected during the first two days without video had also been inspected by Echelon in 2014. Significant discrepancies were found with a few pile ratings when compared to Echelon’s. Global Diving re-inspected these piles to document their condition with video on the DVD recording. Although we were not able to resolve the discrepancies, we gained confidence with the consistency of the ratings we had obtained. Global Diving rated pile capacity in increments of 5 percentage points. Over 80% of the paired ratings differed from each other by 10 percentage points or less. The reported pile rating for each of these piles is the average of the pair of ratings rounded to the nearest 25th percentile. A summary of the pile ratings for this year and prior years are shown in Table 2. All or nearly all timber piles were inspected except in 2011, when a representative sample was inspected, and in 2014, when piles were monitored along the seawall construction zone and were not intended to be representative. The quantity of piles for each rating are the actual values. The table of values in the executive summary are extrapolated for all 341 piles based on the percentages for easier comparison of year-to-year results. Overall, the pile ratings are worse for each successive inspection. This trend is projected out to year 2021 to show how many piles will be in jeopardy in 5 years. Table 2: Summary of Timber Pile Ratings for Pier 58 Year Observed Pile Ratings 100% 90% 75% 50% 25% 0% Pile Qty 2000 84 (25%) 204 (60%) 37 (11%) 10 (3%) 4 (1%) 2 (1%) 341 2006 12 (3%) 170 (52%) 106 (33%) 27 (8%) 7 (2%) 2 (1%) 324 2011* 0 (0%) 21 (15%) 65 (47%) 44 (32%) 7 (5%) 1 (1%) 138* 2014* 11 (14%) 30 (39%) 23 (30%) 1 (1%) 3 (4%) 8 (11%) 76* 2016 0 (0%) 0 (0%) 3 (1%) 160 (47%) 160 (47%) 18 (5%) 341 2021 (projected) 0 (0%) 0 (0%) 0 (0%) 20 (68%) 239 (70%) 10 (34%) 341 *2011 and 2014 were partial investigations Note: Inspections of timber piles were performed by the following firms: 2000 – Echelon 2006 – Seattle Structural/Global Diving 2011 – Seattle Structural/Global Diving 2014 – Echelon (limited inspection for Mortenson-Manson Joint Venture) 2016 – Seattle Structural/Global Diving Seattle Structural performed a load test of Pier 58 on December 8, 2016. The test was conducted by positioning a 6,000 lb vehicle at each pile and measuring the vertical displacement of the deck surface directly over the pile. The timber deck elevation was determined with a tripod-mounted construction laser and a rod-eye receiver. The accuracy of the equipment is +0.08 inch (+2 mm) within a 100 foot (30 m) radius. If the pile provides no support, the expected displacement is ½” (13 mm) or more. The measured displacements are shown in Appendix D. No piles at accessible areas of the pier failed the load test. Although at least one pile has a rating of 0%, we did not observe significant deflection at December 2016 12 that pile. Most stringers and pile caps are continuous over 2 spans and distribute load to more than one pile. The load tests were successful, that is, no pile failures were encountered. The measured deflection at all piles was 0.08 inch (2 mm) or less, which is within the accuracy of the equipment. Timber Pile Caps The timber pile caps are above the splash zone and have no significant surface rot and no observable marine borer activity. The ends of some caps at the edge of the pier look “weathered” but they have no significant loss of capacity as the damage that exists is in a region of low stress. A pile cap near Grids 3/U has an inclined crack that has not changed significantly since 2006. The timber pile caps generally are in satisfactory condition. Typical conditions are shown in photos 1 and 2. Timber Superstructure No significant deterioration of the deck or stringers was observed. Pier 59 The timber piles of Pier 59 were not inspected in this contract. None of the existing timber piles at Pier 59 are required to support gravity or seismic loading. The western two-thirds of the timber building is supported by concrete and steel piles and steel channel pile caps. The eastern one-third and the perimeter aprons are concrete construction supported by steel pipe piles. Global Diving inspected a representative sample of the 124 pile stubs that support steel replacement piles. The purpose was to determine if there has been any soil erosion around the inverted steel “can” protecting each stub. The pile stubs that were inspected and the maximum projection of each above the mudline are shown on sheets S2.0.2 and S2.0.3 from the 2005 record drawing set. The details of the steel “can” are shown on sheet S5.32. These sheets are included in Appendix A. It is acceptable for the steel “can” to project as much as 12-inches above the mudline. Two (2) of the 38 inspected pile stubs were inspected have inadequate coverage. It is important for all pile stubs to have adequate protection from Bankia (marine borer) damage to ensure the structural adequacy of the western two-thirds of the timber building. Piles N2-28 and N2-29 support timber beams that are partially rotted and crushed, see photos 3 and 4. This damage was reported by BergerABAM in 2015. These beams and piles support the tall west wall of the Aquarium building. No significant signs of movement were observed above the decking inside the building and none were reported by Aquarium staff. This condition does not appear to be a source of imminent failure. Pier 60 The timber walkways and promenade around Pier 60 have been modified in the past 5 years. The timber walkway on the west side was replaced with a concrete walkway supported by steel pipe piles. The promenade on the east side forming one side of the Triangle has been reduced in width and one row of creosote-treated timber piles has been removed, see photos 5 through 8. At the time of our inspection a temporary sheet pile bulkhead was installed on the northeast side along Alaska Way and seawall construction was in progress. Three severely damaged creosote-treated timber piles had been removed beneath the concrete sidewalk in the SDOT right-of-way. Seattle Structural and Global Diving inspected the 20 timber piles that remain on the east and northeast sides of Pier 60. Video and audio from the diver were recorded on DVD. The pile ratings are shown December 2016 13 graphically on a plan in Appendix A and in a table in Appendix C. Prior year ratings are shown as well as this year’s. The pile ratings area summarized in the following table. Table 3: Summary of Timber Pile Ratings for Pier 60 Year Observed Pile Ratings 100% 90% 75% 50% 25% 0% Pile Qty 2006 0 (0%) 9 (45%) 2 (10%) 4 (20%) 0 (1%) 5 (25%) 20 2015 0 (0%) 1 (17%) 0 (0%) 4 (67%) 0 (0%) 1 (17%) 6 2016 0 (0%) 0 (0%) 0 (0%) 10 (50%) 9 (45%) 1 (5%) 20 Note: Inspections of timber piles were performed by the following firms: 2006 – Seattle Structural/Global Diving 2015 – BergerABAM 2016 – Seattle Structural/Global Diving The inspection by BergerABAM was prior to modifications to the timber promenade on the northeast and east sides of Pier 60 and the commencement of seawall construction in this area. It appears that one timber pile was repositioned slightly to support the reduced timber promenade on the east side adjacent to the Triangle. Timber piles 28/5 through 28/9 (BergerABAM piles Q/5 through Q/9) had 0% ratings in 2006. BergerABAM rated the 3 piles they inspected in 2015 as major to severe damage (0% to 25% ratings). All of these piles have 50% ratings in 2016. These piles support an 8-inch temporary waterline for the Aquarium and are immediately adjacent to the temporary sheet piling for the seawall construction. They may have been replaced (posted) by the seawall contractor. Timber piles along the Triangle were rated mostly 75% in 2006 and mostly 25% in 2016. These piles support the temporary waterline, a temporary dry system fire line, and a temporary pressurized 4-inch sewer line during the seawall construction. CONCLUSIONS AND RECOMMENDATIONS In consideration of tight budgetary constraints, the least-cost actions that we recommend for Pier 58 are as follows: 1. Continue to ban vehicular traffic to all areas of Pier 58. Maintain the posted notice of the vehicle ban. Enforce the ban by installing bollards at access points. If a vehicle needs access, a structural engineer should evaluate the proposed vehicle loading prior to approval and access. 2. Do not encourage large groups of people to congregate in any area of Pier 58. 3. Repair timber beams at the west end of Pier 59 supported by steel replacement piles N2-28 and N2-29. 4. Conduct annual row-throughs under the pier to identify apparent deficient piles and/or sub-structure. A row-through was conducted this year for this report so the first annual rowthrough should begin in 2017. December 2016 14 5. Conduct annual load tests of timber piles and areas suspected of having deficient capacity. We recommend using a 6,000 lb vehicle (30 psf) to load the test areas. Measure the deflection of the deck to determine if there is any unusual or excessive movement. This test should be conducted or supervised by a structural engineer. The tests conducted in 2011 and 2016 will serve as a baseline of deflection data for future reference. The measured deflection of all tested piles was 0.08 inch (2 mm) or less. No failed piles were encountered and the load tests were successful. 6. The concrete superstructures of the north and south terraces, the north terrace apron, and the promenade will eventually need to be repaired, replaced, or demolished. The north terrace in particular has serious reinforcing steel corrosion that may not be accelerating at this time but is on-going. All of these areas are supported by Monotube piles and steel H-piles that have serious corrosion. The cost of repairs or replacement would be high. December 2016 15 APPENDIX A Piers 58 6O Timber Pile Rating Plans December 2016 SEEIITIE Siruciural LEGEND >>>>CAUTION<<<< CALL BEFORE YOU DIG! NOTES TIMBER BEARING PILE (NO DATA) 1. H PILES #1 THRU #65 ARE HP10x42, #66 THRU #78 ARE HP10x157 SOURCE: 1973 RECORD DWGS 100% REMAINING CROSS SECTIONAL AREA NOT LESS THAN TWO OR MORE THAN TEN BUSINESS DAYS PRIOR TO COMMENCING EXCAVATION OR DEMOLITION, SECURE THE SERVICES OF A COMMERCIAL UNDERGROUND UTILITIES LOCATOR SERVICE TO IDENTIFY BELOW-GROUND IMPROVEMENTS THAT MAY NOT BE INDICATED ON THE DRAWINGS. FOR IRRIGATION SYSTEMS, CALL SEATTLE PARKS PLUMBING SHOP (206 684 7070) 2. MONOTUBE PILES ARE 12"DIA x 7GA (0.179") SOURCE: 1973 RECORD DWGS 90% REMAINING CROSS SECTIONAL AREA 75% REMAINING CROSS SECTIONAL AREA >>800 424 5555<< 50% REMAINING CROSS SECTIONAL AREA 25% REMAINING CROSS SECTIONAL AREA 0% REMAINING CROSS SECTIONAL AREA LL STEEL H-PILE MM NN OO PP QQ 18 MONOTUBE PILE STEEL PIPE PILE 17 J BATTER PILE 16.1 16 16 15.5 15 II JJ 15 KK 14.5 14.5 14 14 GG 13.5 13 BB 12.5 DD EE HH RR 13 SS FF TT 12 12 CC X Y Z AA 12 UU VV WW 11 11 Seattle Structural PS Inc. Civil and Structural Engineering 1420 Fifth Avenue, Suite 425 Seattle, WA 98101-4019 206-343-3000 phone 206-343-3013 fax 11 XX 10 10 9 10 9 8 YY 9 8 10 9.5 9 8 8 7.9 7.5 7 7 7 6 6 7 6 6 6A F-6 5 5 5 4.5 F-7 4.5 4.3 4 3.5 F-5 F-4 3.5 2A 1 3 3 3A 5 2 10 2 15 P:\SEATTLE PARKS\Pier 58 Waterfront Park Study 2016\CAD\S1.dwg 15/12/16 - 2:58 P 4.7 4.9 4.4 4 4A 5.5 5 5A 19 1 29 39 27 18 14 5 10 13 30 35 1 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z AA BB PIER 58 CC 2016 TIMBER PILING CONDITION ASSESSMENT (WC1741) 24 X 36 SHEET SCALE: 1" = 20' 0 0 10 20 30 20 40 60 11 X 17 SHEET SCALE: 1" = 40' 40 80 MOB BDS 9-12-2016 OF N P16028.00 PLAN DATE SHEET 3 AS NOTED S1 LEGEND >>>>CAUTION<<<< CALL BEFORE YOU DIG! NOTES TIMBER BEARING PILE (NO DATA) 1. H PILES #1 THRU #65 ARE HP10x42, #66 THRU #78 ARE HP10x157 SOURCE: 1973 RECORD DWGS 100% REMAINING CROSS SECTIONAL AREA NOT LESS THAN TWO OR MORE THAN TEN BUSINESS DAYS PRIOR TO COMMENCING EXCAVATION OR DEMOLITION, SECURE THE SERVICES OF A COMMERCIAL UNDERGROUND UTILITIES LOCATOR SERVICE TO IDENTIFY BELOW-GROUND IMPROVEMENTS THAT MAY NOT BE INDICATED ON THE DRAWINGS. FOR IRRIGATION SYSTEMS, CALL SEATTLE PARKS PLUMBING SHOP (206 684 7070) 2. MONOTUBE PILES ARE 12"DIA x 7GA (0.179") SOURCE: 1973 RECORD DWGS 90% REMAINING CROSS SECTIONAL AREA 75% REMAINING CROSS SECTIONAL AREA >>800 424 5555<< 50% REMAINING CROSS SECTIONAL AREA 25% REMAINING CROSS SECTIONAL AREA 0% REMAINING CROSS SECTIONAL AREA STEEL H-PILE MONOTUBE PILE STEEL PIPE PILE BATTER PILE 8 Seattle Structural PS Inc. Civil and Structural Engineering 1420 Fifth Avenue, Suite 425 Seattle, WA 98101-4019 206-343-3000 phone 206-343-3013 fax 8 7 7 6 6 5 5 5 4.5 4.5 4 3.5 3.5 3 P:\SEATTLE PARKS\Pier 58 Waterfront Park Study 2016\CAD\S1.dwg 15/12/16 - 2:59 P 2 29 39 27 18 14 30 35 5 10 13 PIER 58 1 A B C D E F G H I J K L M N O P Q R S 2016 TIMBER PILING CONDITION ASSESSMENT (WC1741) T 24 X 36 SHEET SCALE: 1" = 10' 0 0 5 10 15 10 20 30 11 X 17 SHEET SCALE: 1" = 20' 20 40 MOB BDS 9-12-2016 OF N P16028.00 PLAN DATE SHEET 3 AS NOTED S1.1 LEGEND >>>>CAUTION<<<< CALL BEFORE YOU DIG! NOTES TIMBER BEARING PILE (NO DATA) 1. H PILES #1 THRU #65 ARE HP10x42, #66 THRU #78 ARE HP10x157 SOURCE: 1973 RECORD DWGS 100% REMAINING CROSS SECTIONAL AREA 90% REMAINING CROSS SECTIONAL AREA NOT LESS THAN TWO OR MORE THAN TEN BUSINESS DAYS PRIOR TO COMMENCING EXCAVATION OR DEMOLITION, SECURE THE SERVICES OF A COMMERCIAL UNDERGROUND UTILITIES LOCATOR SERVICE TO IDENTIFY BELOW-GROUND IMPROVEMENTS THAT MAY NOT BE INDICATED ON THE DRAWINGS. FOR IRRIGATION SYSTEMS, CALL SEATTLE PARKS PLUMBING SHOP (206 684 7070) 2. MONOTUBE PILES ARE 12"DIA x 7GA (0.179") SOURCE: 1973 RECORD DWGS 75% REMAINING CROSS SECTIONAL AREA >>800 424 5555<< 50% REMAINING CROSS SECTIONAL AREA 25% REMAINING CROSS SECTIONAL AREA 0% REMAINING CROSS SECTIONAL AREA STEEL H-PILE (NOTE 1) MONOTUBE PILE (NOTE 2) STEEL PIPE COL STEEL PIPE COL 8 Seattle Structural PS Inc. Civil and Structural Engineering 1420 Fifth Avenue, Suite 425 Seattle, WA 98101-4019 206-343-3000 phone 206-343-3013 fax 8 7.9 7.5 7 7 6 6 6A 5.5 5 5A F-6 5 F-5 F-7 4.5 4.3 F-4 3.5 2A 1 4.7 4.9 4.4 4 4A 3 3A 5 10 2 P:\SEATTLE PARKS\Pier 58 Waterfront Park Study 2016\CAD\S1.dwg 15/12/16 - 3:05 P 15 19 1 5 PIER 58 S T U V W X Y Z AA BB 2016 TIMBER PILING CONDITION ASSESSMENT (WC1741) CC 24 X 36 SHEET SCALE: 1" = 10' 0 0 5 10 15 10 20 30 11 X 17 SHEET SCALE: 1" = 20' 20 40 MOB BDS 9-12-2016 OF N P16028.00 PLAN DATE SHEET 3 AS NOTED S1.2 LEGEND >>>>CAUTION<<<< CALL BEFORE YOU DIG! NOTES TIMBER BEARING PILE (NO DATA) 1. H PILES #1 THRU #65 ARE HP10x42, #66 THRU #78 ARE HP10x157 SOURCE: 1973 RECORD DWGS 100% REMAINING CROSS SECTIONAL AREA 90% REMAINING CROSS SECTIONAL AREA NOT LESS THAN TWO OR MORE THAN TEN BUSINESS DAYS PRIOR TO COMMENCING EXCAVATION OR DEMOLITION, SECURE THE SERVICES OF A COMMERCIAL UNDERGROUND UTILITIES LOCATOR SERVICE TO IDENTIFY BELOW-GROUND IMPROVEMENTS THAT MAY NOT BE INDICATED ON THE DRAWINGS. FOR IRRIGATION SYSTEMS, CALL SEATTLE PARKS PLUMBING SHOP (206 684 7070) 2. MONOTUBE PILES ARE 12"DIA x 7GA (0.179") SOURCE: 1973 RECORD DWGS 75% REMAINING CROSS SECTIONAL AREA >>800 424 5555<< 50% REMAINING CROSS SECTIONAL AREA LL MM NN OO PP QQ 25% REMAINING CROSS SECTIONAL AREA 0% REMAINING CROSS SECTIONAL AREA 18 STEEL H-PILE (NOTE 1) MONOTUBE PILE (NOTE 2) STEEL PIPE COL 17 STEEL PIPE COL 16.1 16 II GG BB CC DD EE JJ 15 KK 14.5 14 HH RR 13 SS FF TT X Y Z Seattle Structural PS Inc. Civil and Structural Engineering 1420 Fifth Avenue, Suite 425 Seattle, WA 98101-4019 206-343-3000 phone 206-343-3013 fax AA 12 UU VV WW 11 XX P:\SEATTLE PARKS\Pier 58 Waterfront Park Study 2016\CAD\S1.dwg 15/12/16 - 2:59 P 10 10 YY 9.5 9 9 PIER 58 8 2016 TIMBER PILING CONDITION ASSESSMENT (WC1741) 8 7.9 24 X 36 SHEET SCALE: 1" = 10' 0 0 5 10 15 10 20 30 11 X 17 SHEET SCALE: 1" = 20' 20 40 MOB BDS 9-12-2016 OF N P16028.00 PLAN DATE SHEET 3 AS NOTED S1.3 LEGEND >>>>CAUTION<<<< CALL BEFORE YOU DIG! NOTES TIMBER BEARING PILE (NO DATA) 1. H PILES #1 THRU #65 ARE HP10x42, #66 THRU #78 ARE HP10x157 SOURCE: 1973 RECORD DWGS 100% REMAINING CROSS SECTIONAL AREA NOT LESS THAN TWO OR MORE THAN TEN BUSINESS DAYS PRIOR TO COMMENCING EXCAVATION OR DEMOLITION, SECURE THE SERVICES OF A COMMERCIAL UNDERGROUND UTILITIES LOCATOR SERVICE TO IDENTIFY BELOW-GROUND IMPROVEMENTS THAT MAY NOT BE INDICATED ON THE DRAWINGS. FOR IRRIGATION SYSTEMS, CALL SEATTLE PARKS PLUMBING SHOP (206 684 7070) 2. MONOTUBE PILES ARE 12"DIA x 7GA (0.179") SOURCE: 1973 RECORD DWGS 90% REMAINING CROSS SECTIONAL AREA 75% REMAINING CROSS SECTIONAL AREA >>800 424 5555<< 50% REMAINING CROSS SECTIONAL AREA 25% REMAINING CROSS SECTIONAL AREA 0% REMAINING CROSS SECTIONAL AREA STEEL H-PILE (NOTE 1) MONOTUBE PILE (NOTE 2) STEEL PIPE COL J STEEL PIPE COL Seattle Structural PS Inc. Civil and Structural Engineering 1420 Fifth Avenue, Suite 425 Seattle, WA 98101-4019 206-343-3000 phone 206-343-3013 fax 16 15.5 15 14.5 14 13.5 13 12.5 12 12 11 11 P:\SEATTLE PARKS\Pier 58 Waterfront Park Study 2016\CAD\S1.dwg 15/12/16 - 3:00 P 10 10 9 9 PIER 58 8 2016 TIMBER PILING CONDITION ASSESSMENT (WC1741) 8 24 X 36 SHEET SCALE: 1" = 10' 0 0 5 10 15 10 20 30 11 X 17 SHEET SCALE: 1" = 20' 20 40 MOB BDS 9-12-2016 OF N P16028.00 PLAN DATE SHEET 3 AS NOTED S1.4 >>>>CAUTION<<<< CALL BEFORE YOU DIG! NOT LESS THAN TWO OR MORE THAN TEN BUSINESS DAYS PRIOR TO COMMENCING EXCAVATION OR DEMOLITION, SECURE THE SERVICES OF A COMMERCIAL UNDERGROUND UTILITIES LOCATOR SERVICE TO IDENTIFY BELOW-GROUND IMPROVEMENTS THAT MAY NOT BE INDICATED ON THE DRAWINGS. FOR IRRIGATION SYSTEMS, CALL SEATTLE PARKS PLUMBING SHOP (206 684 7070) >>800 424 5555<< J K 12 L 5 11 M E F 9 5 8 C Seattle Structural PS Inc. Civil and Structural Engineering 1420 Fifth Avenue, Suite 425 Seattle, WA 98101-4019 206-343-3000 phone 206-343-3013 fax R 7 A 29 6 10 6 9 8 10 7 7 6 8 H 11 12 G 5 SEAWALL 9 13 10 10 ALL (2006, 2009, 2015) 10 TINNEA / SEATTLE STRUCTURAL (2006) 10 BERGER ABAM (2009, 2015) 15 12 3 GRID SYMBOLS 14 11 4 13 14 15 LEGEND 1 TIMBER BEARING PILE (NO DATA) 2 PIER 60 2 16 1 17 2 18 3 19 4 20 5 100% REMAINING CROSS SECTIONAL AREA 28 90% REMAINING CROSS SECTIONAL AREA Q 30 31 P N 75% REMAINING CROSS SECTIONAL AREA 50% REMAINING CROSS SECTIONAL AREA TRIANGLE 25% REMAINING CROSS SECTIONAL AREA 0% REMAINING CROSS SECTIONAL AREA 21 P:\SEATTLE PARKS\Pier 58 Waterfront Park Study 2016\CAD\S2.dwg 15/12/16 - 3:13 P 6 22 1 BATTER PILE 7 UNDAMAGED FENDER PILE DAMAGED FENDER PILE PIER 59 STEEL PIPE PILE B D 33 K PIER 60 32 L 2016 TIMBER PILING CONDITION ASSESSMENT (WC1741) 24 X 36 SHEET SCALE: 1" = 20' 0 0 10 20 30 20 40 60 11 X 17 SHEET SCALE: 1" = 40' 40 N MOB BDS 80 P16028.00 PLAN DATE SHEET 3 AS NOTED 9-12-2016 OF S2 LEGEND NOTES All work done In accordance wIIh Ihe ley of SeaI'Ilo Standard Plan: and In effecI on The da?Ie ahawn above, and I: (A) I TIMBER BEARING PILE (NO DATA) 1. PILES #1 THRU #65 ARE HP10X42, #66 THRU #78 ARE HP1OX157 CALL BEFORE You SOURCE: 1973 RECORD DWGS NOT LESS THAN TWO OR MORE THAN TEN BUSINESS DAYS 0 1000/ REMAINING CROSS SECTIONAL AREA PRIOR TO COMMENCING EXCAVATION OR DEMOLITION, 0 .. .. SECURE THE SERVICES OF A COMMERCIAL UNDERGROUND 2' MONOTUBE PILES ARE 12 7GA (0-179 UTILITIES LOCATOR SERVICE TO IDENTIFY BELOW-GROUND SOURCE: 1973 RECORD DWGS IMPROVEMENTS THAT MAY NOT BE INDICATED ON THE CD 90% REMAINING CROSS SECTIONAL AREA DRAWINGS. FOR IRRIGATION SYSTEMS, CALL SEATTLE PARKS PLUMBING SHOP (206 684 7070) 75% REMAINING CROSS SECTIONAL AREA >>800 424 5555<< 50% REMAINING CROSS SECTIONAL AREA 25% REMAINING CROSS SECTIONAL AREA . 0% REMAINING CROSS SECTIONAL AREA I STEEL PILE (9 qg 527-47715724ka 7 A A A . MONOTUBE PILE STEEL PIPE PILE ?7 ?5 A 5 G) 1356?: w?wva 1 EH BATTER PILE i ?56 -, Structural 7 7,7 16 75 LOAD TEST 16?3055 16?2015 16 Seattle Structural PS Inc. 17 927 :77 733 5&7? I Civil and Structural Engineering ,2 9? 7a 7.1N7ls' 1 1420 Fifth Avenue, Suite 425 7777777 GD 7 if: 7777777 Seattle, WA 98101-4019 11E 105i 15,9?3?145 15in 177471 206-343-3000 phone 206-343-3013fax 1s - 7 7 77777 :15 .A. ri31257771 7777777 155-7: @777 7947*! If 7% 77777 i Jrn$7,407 NO. REVISION As BUILT DATE kii 7 7777?7 7, 31 REVIEWED: 9 9 9 2? jog/37329 PARK ENGINEER DATE i supplemented by Spoclal Provlslons. PIER 58 TIMBER PILING CONDITION ASSESSMENT (WC1741) 24 36 SHEET SCALE: 1" 20' 2016 LOAD TEST 0 10 20 30 40 LOCATIONS OF DISPLACEMENT MEASUREMENTS SHEET SCALE: 1" 40' ORDINANCE No. 83 JOB N0. P1602800 58 Waterfront Park Study 09/12/16 - 11:20 A LAN 3 SCALE AS NOTED >>>>CAUTION<<<< CALL BEFORE YOU DIG! NOT LESS THAN TWO OR MORE THAN TEN BUSINESS DAYS PRIOR TO COMMENCING EXCAVATION OR DEMOLITION, SECURE THE SERVICES OF A COMMERCIAL UNDERGROUND UTILITIES LOCATOR SERVICE TO IDENTIFY BELOW-GROUND IMPROVEMENTS THAT MAY NOT BE INDICATED ON THE DRAWINGS. FOR IRRIGATION SYSTEMS, CALL SEATTLE PARKS PLUMBING SHOP (206 684 7070) >>800 424 5555<< 7" 21" 9" 0" 0" 6" 0" 0" 9" The Miller Hull Partnership, LLP Architecture and Planning Polson Building 71 Columbia Sixth Floor Seattle, WA 98104 Phone 206.682.6837 Fax 206.682.5692 0" 4" 1" 0" 22" 2" 13" 6" 10" 6" 0" 0" 7" 0" LEGEND: X" MAXIMUM PROJECTION OF STEEL "CAN" OF REPLACEMENT PILE ABOVE MUDLINE MEASURED IN 2016 (INCHES) >>>>CAUTION<<<< CALL BEFORE YOU DIG! NOT LESS THAN TWO OR MORE THAN TEN BUSINESS DAYS PRIOR TO COMMENCING EXCAVATION OR DEMOLITION, SECURE THE SERVICES OF A COMMERCIAL UNDERGROUND UTILITIES LOCATOR SERVICE TO IDENTIFY BELOW-GROUND IMPROVEMENTS THAT MAY NOT BE INDICATED ON THE DRAWINGS. FOR IRRIGATION SYSTEMS, CALL SEATTLE PARKS PLUMBING SHOP (206 684 7070) >>800 424 5555<< 12" 8" 0" 1" 9" The Miller Hull Partnership, LLP Architecture and Planning Polson Building 71 Columbia Sixth Floor Seattle, WA 98104 Phone 206.682.6837 Fax 206.682.5692 9" TIMBER BEAM DAMAGE 11" 8" 0" 11" 6" 6" 11" 9" 4" LEGEND: X" MAXIMUM PROJECTION OF STEEL "CAN" OF REPLACEMENT PILE ABOVE MUDLINE MEASURED IN 2016 (INCHES) 7" >>>>CAUTION<<<< CALL BEFORE YOU DIG! NOT LESS THAN TWO OR MORE THAN TEN BUSINESS DAYS PRIOR TO COMMENCING EXCAVATION OR DEMOLITION, SECURE THE SERVICES OF A COMMERCIAL UNDERGROUND UTILITIES LOCATOR SERVICE TO IDENTIFY BELOW-GROUND IMPROVEMENTS THAT MAY NOT BE INDICATED ON THE DRAWINGS. FOR IRRIGATION SYSTEMS, CALL SEATTLE PARKS PLUMBING SHOP (206 684 7070) >>800 424 5555<< The Miller Hull Partnership, LLP Architecture and Planning Polson Building 71 Columbia Sixth Floor Seattle, WA 98104 Phone 206.682.6837 Fax 206.682.5692 PROJECTION OF STEEL "CAN" OF REPLACEMENT PILE ABOVE MUDLINE APPENDIX Pier 58 Timber Pile Rating Data December 2016 SEEIITIE Siruciural Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) Appendix B: Pier 58 Timber Pile Ratings Pile Bent 1 2 3A 3 2011 Pile Bent Pile Rating Pile Remarks 2000 2006 2011 2014 2016 14 100% NR 25% 75% 25% 15 16 17 18 19 20 21 3 4 5 6 7 8 9 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 1 1.1 2 3 4 5 6E 1 100% 100% 100% 100% 100% 90% 90% 90% 100% 90% 90% 90% 75% 100% 50% 90% 90% 90% 90% 90% 90% 90% 90% 90% 90% 90% 90% 90% 90% 90% 100% 90% 75% 100% 90% 90% 90% 100% 100% NR NR NR NR NR NR NR 75% 25% 50% 90% 90% 75% 90% 25% 75% 75% 90% 75% 50% 75% 90% 90% 75% 50% 75% 75% 75% 50% 75% 90% NR 90% 75% 90% 90% 90% 90% 90% 75% 75% 50% 90% 75% 75% 75% 90% 50% 90% 90% 25% 0% 75% 25% 75% 75% 75% 75% 50% 90% 90% 90% 75% 25% 75% 50% 75% 25% 75% 90% 50% 50% 75% 50% 50% 75% 50% 75% 90% 100% 75% 90% 90% 90% 25% 90% 100% 100% 90% 0% 0% 100% 0% 90% 100% 100% 75% 0% 75% 90% 90% 75% 75% 75% 75% 75% 0% 75% 100% 90% 90% 90% 100% 75% 90% 90% 100% 50% 50% 25% 50% 25% 2014 Label: 1-27 25% 2014 Label: 1-28 0% 2014 Label: 1-29 25% 25% 50% 50% 0% 0% 25% 0% 25% 25% 50% 25% 25% 50% 50% 50% 25% 25% 25% 25% 25% 25% 25% 25% 0% 25% 25% 25% 25% 50% 50% 25% 3A 1 2 3 4 5 6 7 NR = not rated December 2016 B-1 Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) Appendix B: Pier 58 Timber Pile Ratings Pile Label 2011 Label 3 2 90% 90% NR 3 4 5 7 8 9 10 11 12 13 14 15 16 17 18 19 1 2 3 4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16E 1 2 3 100% 100% 90% 90% 90% 90% 100% 100% 90% 90% 90% 90% 90% 90% 75% 90% 100% 100% 90% 100% 90% 90% 90% 90% 90% 90% 90% 90% 90% 90% 100% 90% 90% 100% 90% 90% 100% 100% 100% 90% 90% 90% 90% 90% 75% 90% 100% 75% 75% 90% 75% 90% 50% 90% 90% 90% 90% 90% 75% 90% 90% 90% NR 75% 25% 90% 90% 90% 75% 90% 90% 75% 75% 75% 25% 90% 90% 90% NR 90% 50% NR 25% 0% NR 100% 25% NR 75% 25% NR 90% 50% NR 90% 25% NR 90% 50% NR 0% 0% NR 75% 25% NR 90% 25% NR 75% 25% NR 75% 25% NR 75% 25% NR 25% 25% NR 90% 25% NR 75% 25% NR NR 50% NR NR 50% NR NR 0% NR NR 50% 50% 90% 50% 75% 90% 50% 50% 100% 50% 50% 75% 25% 50% 75% 25% 75% 0% 0% 50% 90% 50% 50% 90% 25% 75% 75% 25% 75% 90% 0% 75% 90% 25% 50% 75% 25% 50% 0% 0% 50% 90% 25% 75% 50% 25% 50% 75% 0% 75% NR 25% NR NR 50% NR NR 50% 4A 4 Pile Remarks Pile 3.5 Bent Pile Rating Bent 2000 2006 2011 2014 2016 75% 50% NR = not rated December 2016 B-2 Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) Appendix B: Pier 58 Timber Pile Ratings Pile Label Bent Pile 4 4 F 4.5 5A 5 2011 Label Bent 5 6 7 8 9 10 11 12 13 14 15 16 4 5 6 7 1 2 1 2 3 4 5 6E 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 4.3 4.9 5.5 4.7 Pile 1 1 1 1 Pile Rating Remarks 2000 2006 2011 2014 2016 100% 90% NR NR 50% 100% 90% 100% 90% 90% 90% 100% 90% 90% 100% 90% 100% 90% 90% 90% 90% 100% 90% 90% 100% 100% 90% 90% 90% 90% 100% 90% 100% 100% 90% 100% 90% 100% 90% 90% 90% 90% 90% 100% NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR 50% 75% 75% 75% 75% 75% 75% NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR 90% 90% NR 90% NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR 50% 50% 50% 25% 25% 25% 50% 25% 25% 25% 25% 25% 25% 25% 25% 25% 25% 50% 25% 25% 25% 25% 25% 25% 50% 50% 50% 50% 50% 50% 25% 25% 25% 25% 50% 50% 25% 25% 25% 90% 90% 90% 90% 75% 75% 90% 75% 75% 90% 75% 75% NR NR NR NR 90% 90% 90% 75% 90% 75% 90% 90% 90% 90% 90% 90% 90% 90% 90% 90% 90% 90% 90% 75% 90% 75% 90% NR = not rated December 2016 B-3 Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) Appendix B: Pier 58 Timber Pile Ratings Pile Label 2011 Label 5 16 90% 75% NR NR 25% 17 1 2 3 4 5E 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 1 1 50% 90% 90% 90% 90% 100% 25% 90% 75% 90% 50% 100% 90% 100% 90% 100% 100% 90% 75% 90% 100% 90% 90% 90% 100% 50% 100% 100% 100% 100% 100% 100% 100% 90% 90% 90% 90% NR 90% 0% 90% 90% 75% 75% 90% 50% 75% 75% 90% 90% 90% 90% 90% 90% 90% 90% 75% 25% 75% 100% 75% 75% 90% 90% 90% 90% 75% 90% 90% 90% 90% 75% 90% 75% 75% 75% 75% 90% NR 50% 50% 50% 75% 75% 75% 50% 50% 50% 75% 75% 75% 75% 75% 50% 50% 50% 25% 50% 75% 75% 75% 50% 50% 50% 50% 75% 75% 75% 75% 75% 75% 75% 50% NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR 0% 25% 50% 50% 25% 25% 25% 25% 25% 25% 50% 50% 50% 50% 50% 25% 50% 25% 0% 25% 75% 25% 25% 25% 25% 50% 50% 50% 50% 50% 50% 50% 50% 50% 25% 25% 50% 0% 50% 6 7 7.5 7.9 8 Pile Remarks Pile 6A Bent Pile Rating Bent 2000 2006 2011 2014 2016 NR = not rated December 2016 B-4 Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) Appendix B: Pier 58 Timber Pile Ratings Pile Label 2011 Label 8 2 90% 90% NR NR 25% 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 3 4 1 1.1 2 3 4 5 90% 90% 90% 90% 90% 90% 100% 90% 100% 90% 90% 90% 90% 90% 90% 75% 100% 75% 75% 90% 90% 100% 100% 90% 90% 90% 90% 100% 90% 100% 90% 90% 90% 75% 90% 75% 75% 100% 75% 50% 75% 75% 90% 50% 50% 90% 90% 100% 90% 75% 90% 90% 90% 75% 75% 100% 75% 75% 90% 75% 90% 90% 90% 90% 90% 90% 90% 100% 90% 90% 90% 75% 90% 90% 90% 90% 75% 90% NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR 50% 50% 50% 25% 50% 25% 50% 50% 50% 25% 50% 25% 50% 25% 25% 50% 50% 25% 25% 25% 50% 25% 50% 50% 50% 25% 50% 50% 50% 25% 25% 25% 25% 50% 50% 50% 50% 50% 0% 9.5 10 Pile Remarks Pile 9 Bent Pile Rating Bent 2000 2006 2011 2014 2016 NR = not rated December 2016 B-5 Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) Appendix B: Pier 58 Timber Pile Ratings Pile Label 2011 Label 10 6 25% 90% NR NR 25% 7 8 9 10 11 12 13 14 15 16 17 18 19 1 2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 1 1 2 1 1 2 3 100% 100% 50% 90% 100% 100% 100% 90% 90% 90% 90% 90% 90% 75% 75% 90% 90% 75% 90% 75% 90% 50% 100% 100% 90% 100% 90% 100% 90% 90% 90% 100% 75% 90% 100% 90% 90% 100% 75% 0% 75% 100% 75% 75% 90% 90% 75% 75% 90% 90% 75% 90% 75% 75% 90% 90% 90% 75% 50% 75% 90% 90% 50% 75% 90% 90% 100% 75% 75% 90% 100% 90% 75% 100% 75% 90% 90% 75% NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR 50% 50% 25% 50% 50% 50% 50% 25% 50% 50% 25% 25% 25% 25% 25% 50% 25% 50% 50% 25% 25% 50% 25% 25% 25% 50% 50% 50% 25% 50% 50% 50% 25% 25% 50% 50% 50% 50% 50% 11 11.5 11.6 11.8 12 Pile Remarks Pile 10.5 Bent Pile Rating Bent YY YY 1 2 XX XX XX VV 1 2 3 1 2000 2006 2011 2014 2016 NR = not rated December 2016 B-6 Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) Appendix B: Pier 58 Timber Pile Ratings Pile Label Bent Pile 12 12.5 12.6 12.7 12.8 12.9 13 13.5 13.6 13.7 13.8 14 2011 Label Bent Pile Pile Rating Remarks 2000 2006 2011 2014 2016 4 75% 90% NR NR 25% 5 6 7 8 9 10 11 12 13 14 15 1N 1S 2S 3S 4S 1 1W 1.1E 1 1 1 2 3 4 5 6 7 8 9 1N 1S 2S 1 1 1 1 2 3 75% 100% 90% 100% 90% 90% 0% 90% 90% 90% 90% 90% 75% 100% 90% 100% 75% 75% 90% 100% 90% 90% 90% 90% 90% 100% 90% 50% 90% 90% 90% 90% 90% 75% 90% 90% 90% 90% 90% 90% 90% 90% 90% 75% 90% 90% 90% 75% 75% 90% 75% 90% 90% 90% 90% 75% 90% 75% 90% 90% 90% 90% 90% 75% 90% 90% 90% 75% NR 75% 90% 90% 50% 90% 90% 75% 75% 90% NR NR NR NR NR NR NR NR NR NR NR NR 90% 90% 90% 90% NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR 90% 90% NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR 50% 25% 50% 50% 50% 50% 50% 50% 25% 50% 25% 50% 50% 50% 25% 25% 25% 50% 25% 50% 50% 25% 25% 50% 50% 50% 50% 25% 50% 25% 25% 25% 25% 25% 50% 50% 25% 25% 25% VV 2 UU VV WW TT TT 1 3 1 1 2 SS 13.2 13.2 RR SS RR 1 1 2 1 2 2 NR = not rated December 2016 B-7 Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) Appendix B: Pier 58 Timber Pile Ratings Pile Label 2011 Label 14 4 90% 75% NR NR 50% 5 6 7 8 9 1N 1S 2S 1 2 3 4E 5E 6 7 7E 7.1N 7.1S 7.3N 7.3S 8 9N 9.2 9.3 9S 10E 11E 12 1S 1E 1 2E 2 2.1E 3 3.1W 3.2W 3.5E 4 100% 90% 90% 90% 75% 90% 90% 90% 75% 90% 90% 90% 100% 90% 75% 0% 90% 90% 90% 75% 75% 25% 100% 90% 90% 90% 100% 90% 90% 90% 90% 75% 90% 90% 90% 90% 75% 75% 90% 90% 90% 75% 90% 50% 75% 75% 90% 75% 50% 75% 90% 75% 75% 25% 75% 50% NR NR 90% 75% 75% 90% 75% 90% 100% 100% 100% 90% 50% 75% 90% 50% 50% 90% 75% 50% 90% 50% NR NR NR NR NR NR 90% 90% 50% 75% 50% NR NR 75% 90% NR NR NR NR NR 25% 75% NR NR 90% 90% 90% 90% NR 75% 75% NR 75% NR 75% NR NR NR 75% NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR 50% 50% 50% 25% 50% 0% loose, not bearing under pile cap 25% 50% 25% 25% 25% 25% 50% 50% 25% 50% 25% 25% 25% 50% 25% 50% 25% 25% 50% 50% 25% 50% 25% 50% 50% 25% 25% 50% 50% 50% 50% 0% 50% 15 15.5 16 Pile Remarks Pile 14.5 Bent Pile Rating Bent 14.2 14.2 1 2 14.7 14.7 1 2 14.7 15.1 15.3 15.3 15.5 3 1 2 1 3 15.5 14.7 4 4 14.8 14.8 1 2 15.8 15.9 1 1 15.9 2 15.9 3 16.5 16.5 15.5 1 2 1 2000 2006 2011 2014 2016 NR = not rated December 2016 B-8 Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) Appendix B: Pier 58 Timber Pile Ratings Pile Label 2011 Label Pile Rating Remarks Bent Pile Bent Pile 2000 2006 2011 2014 2016 16 4E 15.5 2 75% 90% NR NR 25% 90% 75% 75% 90% 75% 90% 90% 90% 90% 90% 90% 90% 100% 25% 50% 90% 75% 90% 50% 50% NR 75% 90% 75% 90% 25% 50% 75% 50% 75% 50% 50% 75% 90% 50% 75% 75% 50% 50% 75% 90% NR 50% 50% NR NR 50% 75% 75% 50% NR NR 50% 75% 75% 50% 75% 75% 75% 50% 75% 75% NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR 50% 25% 25% 25% 50% 50% 50% 50% 50% 50% 50% 50% 50% 50% 50% 50% 50% 50% 75% 75% NR not on prior plans, broken at cap, not rated 16.1 17 18 N/A 5 6 7S 1 1 2 3 4 4E 4.1E 5 6 7 1 2 3 4 5 6 7 N/A 17.3 17.3 1 2 4.4 1 NR = not rated December 2016 B-9 APPENDIX Pier 60 Timber Pile Rating Data December 2016 SEEIITIE Siruciural Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) Appendix C: Pier 60 Timber Pile Ratings Pile Label Bent 28 31 33 BergerABAM Pile Ratings Pile Bent Pile 2000 5 Q 5 0% 6 7 8 9 10 11 12 13 14 15 1 2 16 17 18 19 20 21 22 0% 0% 0% 0% 50% 90% 90% 90% 50% 90% 90% 50% 90% 75% 90% 75% 90% 90% 50% 6 7 8 9 10 11 12 13 14 15 1 2 1 2 3 4 5 6 7 N K 2015 SV MJ MJ MD MD NO Remarks 2016 0% 50% NR NR NR 50% NR NR NR NR 50% NR NR NR NR NR NR NR 50% 50% 90% 50% 50% 50% 50% 50% 50% 50% 50% 0% 25% 25% 25% 25% 50% 25% 25% 25% 25% 25% NR = not rated Berger ABAM Rating Descriptions: Rating Description % Cross Section Remaining NO No Damage 90%-100% MN Minor Damage 75%-90% MD Medium Damage 50%-75% MJ Major Damage 25%-50% SV Severe Damage 0%-25% December 2016 C-1 APPENDIX Pier 58 Load Test Displacements December 2016 SEEIITIE Structural Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) Appendix D: Pier 58 Load Test Displacements Pile Label Bent 1 2 3A 3 Pile 2011 Label Bent Pile Displacement (mm) 2011 2016 Remarks 14 15 16 17 18 19 20 21 3 4 5 6 7 8 9 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 1 1.1 2 3 4 5 6E 1 2014 Label: 1-27 2014 Label: 1-28 2014 Label: 1-29 0 3A 1 2 3 4 5 6 7 0 Positive displacements are down, negative displacements are up. December 2016 D-1 Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) Appendix D: Pier 58 Timber Pile Ratings Pile Label 2011 Label Bent Pile 3 2 1 3 4 5 7 8 9 10 11 12 13 14 15 16 17 18 19 1 2 3 4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16E 1 2 3 1 2 1 0 0 1 1 1 1 1 3.5 4A 4 Bent Pile Displacement (mm) 2011 2016 Remarks 0 0 0 2 0 0 0 0 1 1 0 0 0 0 1 0 0 0 1 2 0 0 Positive displacements are down, negative displacements are up. December 2016 D-2 Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) Appendix D: Pier 58 Timber Pile Ratings Pile Label 2011 Label Bent Pile 4 4 0 0 5 6 7 8 9 10 11 12 13 14 15 16 4 5 6 7 1 2 1 2 3 4 5 6E 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 1 0 0 0 0 0 0 0 0 0 0 F 4.5 5A 5 Bent Pile Displacement (mm) 2011 2016 Remarks 0 0 4.3 4.9 5.5 4.7 1 1 1 1 0 0 0 2 0 0 1 1 2 1 1 1 0 0 0 0 0 0 1 0 1 Positive displacements are down, negative displacements are up. December 2016 D-3 Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) Appendix D: Pier 58 Timber Pile Ratings Pile Label Bent Pile 5 16 6A 6 7 7.5 7.9 8 2011 Label Bent 17 1 2 3 4 5E 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 1 1 Pile Displacement (mm) 2011 2016 0 0 0 0 0 1 1 0 0 1 1 0 0 1 1 1 0 0 0 0 0 1 0 0 0 0 1 1 0 1 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 Remarks Positive displacements are down, negative displacements are up. December 2016 D-4 Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) Appendix D: Pier 58 Timber Pile Ratings Pile Label Bent Pile 8 2 9 9.5 10 2011 Label Bent 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 3 4 1 1.1 2 3 4 5 Pile Displacement (mm) 2011 2016 0 2 0 2 0 1 2 2 1 1 1 0 0 0 0 0 0 1 0 1 1 0 0 1 1 1 1 0 Remarks 0 1 1 0 0 0 1 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 1 0 0 1 0 1 0 Positive displacements are down, negative displacements are up. December 2016 D-5 Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) Appendix D: Pier 58 Timber Pile Ratings Pile Label 2011 Label Bent Pile 10 6 1 7 8 9 10 11 12 13 14 15 16 17 18 19 1 2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 1 1 2 1 1 2 3 0 0 0 1 1 1 1 1 1 2 2 1 1 10.5 11 11.5 11.6 11.8 12 Bent YY YY Pile Displacement (mm) 2011 2016 0 1 1 1 0 1 0 1 0 1 2 1 0 1 1 1 1 0 0 1 0 2 1 0 1 1 1 1 XX XX XX VV Remarks 1 1 1 1 0 1 2 1 0 0 0 1 1 0 1 2 3 1 0 2 0 1 1 1 Positive displacements are down, negative displacements are up. December 2016 D-6 Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) Appendix D: Pier 58 Timber Pile Ratings Pile Label 2011 Label Bent Pile 12 4 2 1 5 6 7 8 9 10 11 12 13 14 15 1N 1S 2S 3S 4S 1 1W 1.1E 1 1 1 2 3 4 5 6 7 8 9 1N 1S 2S 1 1 1 1 2 3 2 0 2 0 0 0 12.5 12.6 12.7 12.8 12.9 13 13.5 13.6 13.7 13.8 14 Bent Pile Displacement (mm) 2011 2016 0 1 2 2 1 VV 2 UU VV WW TT TT 1 3 1 1 2 1 0 0 0 0 0 SS 13.2 13.2 RR SS RR Remarks 1 1 1 1 0 1 1 1 1 2 1 2 2 0 0 0 Positive displacements are down, negative displacements are up. December 2016 D-7 Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) Appendix D: Pier 58 Timber Pile Ratings Pile Label 2011 Label Bent Pile 14 4 1 1 5 6 7 8 9 1N 1S 2S 1 2 3 4E 5E 6 7 7E 7.1N 7.1S 7.3N 7.3S 8 9N 9.2 9.3 9S 10E 11E 12 1S 1E 1 2E 2 2.1E 3 3.1W 3.2W 3.5E 4 0 0 1 0 14.5 15 15.5 16 Bent Pile Displacement (mm) 2011 2016 Remarks loose, not bearing under pile cap 14.2 14.2 1 2 1 1 1 14.7 14.7 0 0 1 2 0 0 14.7 15.1 15.3 15.3 15.5 3 1 2 1 3 0 15.5 14.7 4 4 14.8 14.8 1 2 15.8 15.9 1 1 15.9 2 15.9 3 0 0 16.5 16.5 15.5 1 2 1 1 Positive displacements are down, negative displacements are up. December 2016 D-8 Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) Appendix D: Pier 58 Timber Pile Ratings Pile Label 2011 Label Bent Pile Bent Pile 16 4E 15.5 2 16.1 17 18 N/A 5 6 7S 1 1 2 3 4 4E 4.1E 5 6 7 1 2 3 4 5 6 7 N/A 17.3 17.3 Displacement (mm) 2011 2016 1 0 1 1 1 0 0 1 1 0 1 1 0 1 2 0 1 1 0 -2 1 Remarks 1 1 0 0 4.4 1 not on prior plans, broken at cap, not rated Positive displacements are down, negative displacements are up. December 2016 D-9 APPENDIX Pier 59 Projection of Steel ?Can? of Replacement Piles Above Mudline December 2016 SEEIITIE Structural Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) Appendix E: Pier 59 Projection of Steel “Can” of Replacement Piles Above Mudline Pile Label Maximum Projection (in) 2016 P10-7 NM P11-7 P11-7.5 P11-9 P12-5 P12-6 P12-7 P12-8 P12-10 P12-11 P13-6 P13-8 P13-9 P13-11 P13-12 P13-13 P14-6.1 P14-8 P14-9 P14-10 P14-12 P14-13 P15-6 P15-7 P15-8 P15-10 P15-14 P16-7 P16-9 P16-11 P16-13 P17-6 P17-7 P17-10 P17-13 P17-14 P17-16 P18-8 P18-9 P18-14 NM NM NM NM NM NM NM NM NM 21" 0" 0" 22" 2" 0" 0" 0" 0" 0" 0" 0" NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM Remarks NM indicates “not measured” December 2016 E-1 Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) Appendix E: Pier 59 Projection of Replacement Pile Steel “Can” Above Mudline Pile Label Maximum Projection (in) 2016 P18-16 NM P19-7 P19-8 P19-9 P19-12 P19-14 P19-16 P20-8 P20-10 P20-12 P20-13 P20-14 P21-13 P21-15 P22-8 P22-13 P22-16 P23-12 P23-13 P23-16 P24-6 P24-8 P24-10 P24-12 P24-13 P24-15 P25-7 P25-9 P25-10 P25-13 P26-8 P28-9 P28-10 P28-14 P28-16 P28-20 P29-6 P29-9 P29-10 P29-12 7" 9" 9" 4" 13" 6" 6" 1" 6" 10" 7" NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM Remarks NM indicates “not measured” December 2016 E-2 Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) Appendix E: Pier 59 Projection of Replacement Pile Steel “Can” Above Mudline Pile Label Maximum Projection (in) 2016 P29-13 NM P29-18 P30-8 P30-11 P30-12 P30-15 P30-16 P30-19 P31-7 P31-10 P31-11 P31-14 P31-16 P32-8 P32-9 P32-12 P32-14 P32-16 P32-18 P32-19 P33-9 P33-12 P33-14 P33-17 N2-13 N2-14 N2-17 N2-19 N2-21 N2-22 N2-24 N2-25 N2-27 N2-28 N2-29 S1-2 S1-4 S1-5 S1-6 S1-7 NM NM NM NM NM NM NM NM NM NM NM NM 12" 1" 11" 0" 6" 9" 7" 8" 8" 11" 4" NM NM NM NM NM NM NM NM 9" 0" 9" NM NM NM NM NM Remarks NM indicates “not measured” December 2016 E-3 Piers 58, 59 and 60 Timber Piling Inspection – (WC1741) Appendix E: Pier 59 Projection of Replacement Pile Steel “Can” Above Mudline Pile Label Maximum Projection (in) 2016 S1-10 NM S1-12 S1-13 S1-15 NM 11" NM Remarks NM indicates “not measured” December 2016 E-4 APPENDIX Piers 58 60 Global Diving Timber Pile Inspection Logs December 2016 SEEIITIE Siruciural September 19, 2016 Seattle Structural PS, Inc. 1420 5th Ave. Suite 425 Seattle, WA 98106 Attn: Re: Mr. Michael Braun Seattle Parks Pier 58 Waterfront Park Condition Assessment On August 30, 31 and September 15, 2016 Global Diving & Salvage Inc. performed an underwater inspection of selected piles on Pier 58 and 60, Waterfront Park, Seattle, WA. Inspecting Divers were Christopher Hume and Bradley Peterson. The purpose of the inspection was to ascertain the condition of the piles as compared to a previous survey conducted by Global Diving & Salvage in June of 2011. The divers inspected the piles as directed by the attending representative from Seattle Structural PS, Inc. The diving operations were conducted from the dive support vessel “Titan” utilizing surface supplied diving gear with two-way communications and video/audio recording. Visibility at the time of the dive averaged approximately 6-10 feet. The divers performed a Level 1 inspection, relying primarily on visual and/or tactile observations to make condition assessments. Individual observations on each pile inspected are included in the wood pile inspection logs attached. Bent and pile designation were determined using drawings supplied by Seattle Structural. Records of the dive are also provided in this report. Submitted without prejudice Global Diving & Salvage, Inc. Dave Partlow Diving Supervisor Chris Hume Bradley Peterson Simon Cleasby Inspecting Divers 3840 W Marginal Way SW • Seattle, WA 98106 • www.gdiving.com • 24hr: (206) 623-0621 • Fax: (206) 932-9036 Association of Diving Contractors International The Associated General Contractors of America American Salvage Association Port of Seattle - Piers 58 60 Pile Inspection Records Seattle Structural Engineers Bent Pile 18N 1 2 3 4 5 6 7 17N 1 2 3 4W 4E 5W 5E 6 7 16N 1 2 3 4 4W 5W 6 6NE 6NW 7 8 15.5N 1 Global Diving Salvage, Inc. Date Time Diver Remarks 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 829 CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH 75% 75% 50% 60% 60% 50% wear showing on West face 60% 40% 50% 50% 40% slight surface cracking 40% Boring on East Face 40% 50% 45% 40% minor boring 30% cracking near mudline 50% 45% 50% minor surface cracking 40% minor surface cracking 45% moderate cracking 30% severe cracking with boring 25% cracking and boring 45% 45% 40% 10% Severe cracking, major boring 841 857 915 1 Port of Seattle - Piers 58 60 Pile Inspection Records Seattle Structural Engineers Bent Pile 15.5N 2 3W 3E 3N 3S 4 15N 1 2 1E 3E 3W 4E 4W 5W 5E 6 7 8 14.5N 1 14N 1 2 3 4 5 6 7 14.5 1SW 1SE Date Time 8/30/2016 919 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 933 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 957 8/30/2016 1003 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 1017 8/30/2016 1018 Global Diving Salvage, Inc. Diver Remarks CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH 30% Moderate boring 45% 15% Severe cracking near mudline 35% Boring and Cracking 35% Moderate cracking 25% Moderate-Severe Boring 40% 20% 35% 40% 30% 45% 40% boring and cracking 45% Boring and minor surface cracking 25% moderate-severe boring and cracking 15% Severe boring 35% moderate boring 25% moderate-severe boring 20% rot near mudline moderate boring/pitting 45% 40% 40% 40% 35% 35% 20% 40% 40% 2 Port of Seattle - Piers 58 60 Pile Inspection Records Seattle Structural Engineers Global Diving Salvage, Inc. Bent Pile Date Time Diver Remarks 14.5 2NW 2NE 13N 1 2 3 4 5 6 7 8 12N 1 2 3 4 5 6 7 8 9 10 11 12 13 12.5 1N 2E 2W 3W 3E 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 1019 1020 1023 CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH 15% severe delamination/rotting 20% moderate-severe cracking 40% 40% 35% 35% 40% 40% 40% 40% 40% 40% Moderate boring 40% Moderate Boring 40% Light Cracking 35% light boring and cracking 40% 35% moderate cracking 40% Light Borning 40% moderate boring on South and East Face 40% minor cracking at mudline 40% 35% minor cracking at mud line 35% 40% Light cracking 40% Minor Boring 15% Severe boring and Cracking 40% Minor boring 35% minor-moderate boring 1101 1122 3 Port of Seattle - Piers 58 60 Pile Inspection Records Seattle Structural Engineers Bent Pile 11N 10N 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6W 6E 7 8 9E 9W 11 12 13 Date Time 8/30/2016 1128 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 1138 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 1149 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 Global Diving Salvage, Inc. Diver Remarks CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH 35% Minor boring and Cracking 35% minor delamination 40% minor Cracking 35% Minor Cracking 40% minor cracking and boring 40% minor boring 30% moderate rot at mudline 35% 40% 35% minor-moderate cracking and boring 25% moderate cracking 35% moderate boring 40% 50% 50% 45% minor boring 45% minor surface cracking 40% 15% Pitting, boring, cracking and delamination 50% 30% boring and cracking 40% minor boring and surface cracking 35% minor cracking 30% moderate cracking and pitting 10% severe cracking 45% Stubbed pile 45% minor cracking 45% minor surface cracks 4 Port of Seattle - Piers 58 60 Pile Inspection Records Seattle Structural Engineers Bent Pile 10N 9N 14 1 2 3 4 5 8N 1SW 2NE 1SE 8.5N 1 9N 1 2 3 4 5 6 8N 1 2 3 4 5 6 7N 1 2 3 4 5 6 Date Time 8/30/2016 8/30/2016 1250 8/30/2016 8/30/2016 1256 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 Global Diving Salvage, Inc. Diver Remarks CH CH CH CH BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP 40% pile rot at mudline 30% surface cracking 40% minor pile rot at mudline 45% Stubbed Pile 30% minor cracking and boring 30% minor cracking with moderate boring 35% light surface cracking 40% minor delamination 40% light surface cracking 35% minor scaring 45% 45% 40% minor cracking 25% minor boring delamination and moderate cracking 40% light surface cracking 35% minor boring, minor cracking 45% minor boring at mudline 45% 40% minor surface cracking 35% minor boring at mudline, slight hollow sound when struck 45% 35% minor surface cracking at mudline, slight delamination 40% minor boring 45% 35% minor cracking at mudline 35% minor boring 30% severe vertical cracking moderate boring at mudline 25% minor surface crack, moderate cracking at mudline, moderate boring 5 Port of Seattle - Piers 58 60 Pile Inspection Records Seattle Structural Engineers Bent Pile 6N 1 2 3 4 5E 5W 6 7 8 9 5N 1 2 3 4 5W 5E 16S 1 15.5 1 15 1W 1E 2E 2W 14.5 1 2 3W 3E 13.5 2SW 1 Date 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/30/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 Time 812 Global Diving Salvage, Inc. Diver Remarks BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP CH CH CH CH CH CH CH CH CH CH CH CH 15% minor delamination, surface cracking, major boring at mudline 45% 40% minor boring 35% minor surface cracking, minor boring with slight delamination 30% minor boring, significant surface cracking 30% minor surfce cracking, moderate boring to 2" deep 35% minor boring, slight surface cracking 30% slight boring, minor surface cracking, moderate delamination slight surface cracking, minor boring, moderate cracking at mudline 40% 40% slight surface cracking minor boring 45% 45% 40% minor delamination and surface cracking 40% 30% moderate boring and surface cracking 30% moderate boring, pile rot at mudline 35% moderate boring at mudline 40% minor vertical cracking 40% minor vertical cracking 35% minor vertical cracking 40% minor wear to pile face 35% 35% minor boring at mudline 40% minor boring and surface cracking 40% minor gouging to pile face 35% minor boring and surface cracking 35% minor boring and surface cracking 6 Port of Seattle - Piers 58 60 Pile Inspection Records Seattle Structural Engineers Bent Pile 12.5S 1 2 13.5S 2E 2NW 3 12.5S 4 3 12S 1 2 3 4 5 11S 1 2 3 4 5 10S 1 2 3 4 5 6 9S 1 2 3 4 5 Global Diving Salvage, Inc. Date Time Diver Remarks 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 841 CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH 35% minor boring and surface cracking 35% minor boring and surface cracking 40% minor boring and surface cracking 35% minor boring and surface cracking 35% minor boring and surface cracking 40% minor boring 40% minor boring and surface cracking 40% minor boring 40% minor surface cracking 35% 1" separation, minor boring and surface cracking 40% 35% minor surface cracking, moderate boring 45% minor boring 40% minor vertical surface cracking, minor boring 40% minor boring, light surface cracking 35% minor gouging, vertical surface cracking 40% minor boring 35% vertical surface cracking 40% vertical surface cracking 45% minor delamination and surface cracking 35% minor vertical surface cracking 35% minor boring 35% minor vertical surface cracking 35% minor vertical surface cracking 35% minor vertical surface cracking and light boring 40% minor surface cracking 40% minor vertical cracking 45% light surface damage to face of pile 916 7 Port of Seattle - Piers 58 60 Pile Inspection Records Seattle Structural Engineers Bent Pile 9S 8S 7S 1S 2S 6 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 3 2 1 1 2 3 4 5 6 7 8 Date Time 8/31/2016 935 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 1022 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 Global Diving Salvage, Inc. Diver Remarks CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH 35% minor vertical surface cracking and boring 40% minor surface cracking and boring 45% minor boring 40% minor boring 35% minor vertical surface cracking 40% minor vertical surface cracking 35% minor boring minor vertical surface cracking 40% minor surface cracking and boring 35% light boring and minor vertical surface cracking 35% minor boring, ribbed appearance to pile 40% minor boring 40% minor vertical surface cracking 40% minor vertical surface cracking 45% 40% minor boring 40% 40% minor vertical surface cracking 30% minor boring, hollow sound when struck 35% minor boring 0% Split and hollow 30% minor boring, minor rot near mudline 25% major cracking and boring 30% moderate cracking and light boring 30% moderate cracking 30% moderate cracking and boring 30% moderate boring 30% moderate boring 35% 8 Port of Seattle - Piers 58 60 Pile Inspection Records Seattle Structural Engineers Bent Pile 3S 4S 5S 6S 1 2 3 4 5 6 6 5 4 3 2 1 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 Date Time 8/31/2016 1030 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 1036 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 1044 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 Global Diving Salvage, Inc. Diver Remarks CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH 35% moderate cracking 25% moderate boring and cracking with ribbed appearance 40% light boring, light cracking 40% ribbed appearance, light boring and minor cracking 35% ribbed appearance minor boring light cracking 35% ribbed appearance minor boring light cracking 40% minor delamination, minor cracking 35% ribbed appearance minor boring light cracking 25% moderate cracking, light boring 35% moderate boring and cracking 25% delamination with moderate boring and pile rot at mudline 30% minor cracking, boring and delamination 0% 30% moderate delamination, minor cracking 35% minor delamination, ribbed appearance 20% heavy cracking 35% minor delamination, ribbed appearance 40% 40% minor delamination, minor cracking 35% ribbed appearance minor boring light cracking 35% ribbed appearance minor boring light cracking 35% ribbed appearance minor boring light cracking 35% moderate boring and cracking 40% minor delamination, minor boring 40% minor delamination, minor boring 40% light boring, light cracking 40% ribbed appearance, light boring and minor cracking 40% ribbed appearance, light boring and minor cracking 9 Port of Seattle - Piers 58 60 Pile Inspection Records Seattle Structural Engineers Bent Pile 6S 1M 2M 3M 5 6 7 8 9 10 1 2 3 4 5 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 Date Time 8/31/2016 1104 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 1200 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 1215 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 Global Diving Salvage, Inc. Diver Remarks CH CH CH CH CH CH BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP 35% minor cracking, delamination with ribbed appearance 40% ribbed appearance, minor delamination with minor boring 25%Heavy boring, minor cracking and delamination 0% Hollow 20% moderate cracking and boring 65% Stubbed Pile, concrete around stub slightly soft 40% minor delamination at mudline 25% heavy boring light delamination and cracking 35% cracking at mudline 35% minor surface cracking 35% Stubbed pile with minor delamination 40% light surface cracking at mudline 35% light delamination 40% 25% significant boring at waterline to mudline 30% moderate surface cracking and light boring 40% 20% Significant boring 30% minor delamination and surface cracking 0% Hollow 20% moderate boring and surface cracking 0% Hollow 0% Hollow 0% Hollow 20% Heavy delamination and surface cracking 25% Heavy Boring 35% light surface cracking 30% minor delamination and boring 10 Port of Seattle - Piers 58 60 Pile Inspection Records Seattle Structural Engineers Bent Pile 3M 6 7 8 9 4S 1 2 3 4 5 4.5S 1 4S 6 3.5M 1 2 3 4 2M 13 14 15 16 3M 10 11 12W 12E 13 14 15 16 17 Date Time 8/31/2016 1230 8/31/2016 8/31/2016 8/31/2016 8/31/2016 1240 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 1300 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 Global Diving Salvage, Inc. Diver Remarks BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP 35% light surface cracking and minor boring 0% Hollow 30% minor boring and cracking 20% minor surface cracking and delaminating, hollow sound when struck 25% surface cracking with delamination and moderate boring 30% Boring to 3" delamination and vertical surface cracking 25% surface cracking with delamination, hollow sound when struck 40% 40% 40% 40% 40% 10% major boring 40% 40% 40% 40% 30% significant cracking and delamination 35% minor delamination near waterline 30% moderate surface cracking and boring 40% 35% minor boring and surface cracking 35% 40% 30% moderate surface cracking and boring at mudline 30% moderate boring at mudline 25%minor boring and surface cracking, hollow sound when struck 25% minor delamination and surface cracking 11 Port of Seattle - Piers 58 60 Pile Inspection Records Seattle Structural Engineers Bent Pile 3M 4N 5N 4.5N 8N 18 1 2 3 4W 4E 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 10 9 8 7 6 1 3 Date Time 8/31/2016 1326 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 1343 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 8/31/2016 Global Diving Salvage, Inc. Diver Remarks BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP BP 0% Hollow 40% 40% 40% 25% Significant surface cracking and boring 10% Major Splits 25% mjaor split near cap, minor delamination, minor surface cracking at mudline 20% severe splitting near mudline 0% Hollow 20% moderate boring 20% hollow sound when struck, no visible damage 0% Hollow 35% minor boring 35% minor surface cracking at mudline 35% minor surface cracking 0% Hollow 30% surface cracking and minor delamination 10% significant surface cracking, Hollow below water line 35% 35% 35% 35% Minor Boring 30% minor surface cracking 30% minor surface cracking 35% moderate boring 35% Light delamination 30% Cracking at Cap, minor surface cracking 10% Heavy Boring, 1/2 hollow 12 Port of Seattle - Piers 58 60 Pile Inspection Records Seattle Structural Engineers Bent Pile Date Time 5N 1 2 3N 3S 4 8/31/2016 1441 8/31/2016 8/31/2016 8/31/2016 8/31/2016 1 3 2 1 1 2 3 4 5 6 7 8 1 2 3 4 5 6 1 2 3 4 5 9/15/2016 1044 9/15/2016 9/15/2016 9/15/2016 1049 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 1056 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 2 3 1 Global Diving Salvage, Inc. Diver Remarks CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH 35% slight delamination near mudline 25% slight delamination and minor boring 20% broken away from cap, delamination with cracking and boring 25% surface cracking and delamination 30% minor surface cracking 0% Light Cracking and boring, Split in middle 10% Split boring and cracking 35% Light cracking and boring 35% minor boring and surface cracking 35% Boring around surface and mudline 10% heavy boring and cracking 20% boring and cradking, heavy splitting light boring and delaminating vertical surface cracking 25% light boring and cracking 15% heavy splitting 30% boring and splitting 30% Splitting and boring 30% Light Boring and splitting 15% Cracking and heavy boring 25% Moderate cracking and surface loss 35% Moderate cracking and minor boring 30% minor cracking and boring 40% minor boring and cracking 25% heavy boring at mudline minor cracking 40% cracking and boring 40% minor boring and surface cracking 35% Stubbed pile, large void in repaired area 13 Port of Seattle - Piers 58 60 Pile Inspection Records Seattle Structural Engineers 2 33 28 2 1 2 3 4 5 6 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 10 11 7 8 9 9/15/2016 1134 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 920 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 841 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 1141 9/15/2016 9/15/2016 CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH Global Diving Salvage, Inc. 15% voids and cracking 35%Heavy boring 20% Large bore at waterline, cracking and boring 45% Light cracking and minor surface loss 35% minor cracking and surface loss 15% Heavy cracking 15% Minor boring and severe cracking 35% minor boring and surface cracking 35% Minor boring and delamination, moderate cracking at mudline 25% Minor boring and surface loss 35% Minor boring and cracking 40% minor boring and cracking 35% Minor boring and cracking 25% Splitting and vertical cracking 35% Minor boring and cracking 60% minor boring 50% minor boring and light surface cracking 40% minor boring and light surface cracking 40% minor boring, cracking and light delamination 40% minor boring and cracking 40% light surface delamination, boring and cracking 40% light cracking and minor boring 40% light cracking and minor boring 40% light cracking and minor boring 0% severe cracking 35% Minor boring and cracking 35% Light cracking and boring 40% Light boring and surface loss 40% light boring and cracking 14 Port of Seattle - Piers 58 60 Pile Inspection Records Seattle Structural Engineers Bent Pile 3 2N 3N 4N 1 2 3 4 5 6 7 1 2 3 4 5 6 7 1 2 3 4 5 6 7 8 9 10 11 1 2 3 Global Diving Salvage, Inc. Date Time Diver Remarks 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 1145 CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH 40% light boring and cracking 40% light boring and cracking 10% Very large holes in pile 45% Light cracking and minor surface loss 40% light cracking and minor boring 40% light cracking and minor boring 35% Light boring and minor cracking 30% Light/moderate cracking 0% Hollow 0% Hollow 45% Light vertical cracking 40% light surface delamination, boring and cracking 35% Light surface delamination, large crack 25% Hollow sound when struck 40% Cracking and boring 10% Cracking and boring 45% Minor surface loss 40% light cracking and boring 40% light cracking and boring 45% Light Surface loss 15% Large holes, minor cracking 40% Light cracking and boring 40% minor boring and light surface cracking 30% minor cracking and delamination 0% Hollow 40% Minor vertical cracking 40% light vertical cracking and minor boring 45% Light boring 1211 1220 1234 15 Port of Seattle - Piers 58 60 Pile Inspection Records Seattle Structural Engineers Bent Pile 4N 33 2N 32 N2 32 32 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 17 14 12 9 28 29 8 9 27 12 14 Date 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 Time 1252 1333 1345 1349 1354 1356 Global Diving Salvage, Inc. Diver Remarks CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH CH SC SC SC SC SC SC SC SC SC SC SC 25% Boring 40% Light boring and surface loss 10% light boring and large void 40% Light boring and cracking 35% Delamination and light vertical cracking 35% Vertical cracking and light boring 15% Large void light cracking 45% Light Surface loss 35% Boring at base and knot holes 0% Hollow 30% Split on NE Face 35% Light boring, minor surface loss and vertical cracking 10% Rotten inside 25% Rotten at mudline 50% No noted damage 40% Minor surface loss, minor delamination 45% Minor cracking 4" west side 11" West 3" East SW 8 1/2" NE 1" SE 1" SW 8" Buried NW 9" SE 1" 12" all around NW 6-8" SW 9" NE 1" NW 11" SW 9" Buried 16 Port of Seattle - Piers 58 60 Pile Inspection Records Seattle Structural Engineers Bent Pile S1 32 32 32 19 19 19 19 19 19 20 20 20 S1 20 13 16 18 19 16 14 12 9 8 7 8 10 12 4 13 Date 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 9/15/2016 Time 1409 1428 1436 1437 Global Diving Salvage, Inc. Diver Remarks SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SW 11 1/2" NE 1 1/2" West 6" West 9 1/2" At mudline on East West 7 1/2" at mudline on East South 6" North at mudline SW 13" NE 6" South 4" West 9 1/2" East 7" 9" all around 7" all around 7 1/2" all around SW 1 1/2" SW 6 1/2" NE 2 1/2" South 10" N 2 1/2" North 1 1/2" South 7" 17