3214 BROADWAY BROADWAY KINECT APARTMENTS 2021-08-11

• American Property Development ES-0599.06 • January 22, 2015 Page 8 • Updated June 9, 2016 • • • Active Earth Pressure (level backfill) 30 pcf(equivalent fluid / loose fill) • • • At-Rest Earth Pressure (level backfill) 48 pcf • • Active Earth Pressure (sloped backfill, 1:1 max) 50 pcf* = • At-Rest Earth Pressure (sloped backfill, 1:1 max) 70 pcf* • • Traffic Surcharge (where appropriate) 70 psf(rectangular distribution) = • Preliminary Building Surcharge (where applicable) 125 psf(rectangular distribution)** • • • Passive Resistance (Apply over 2 pile diameters) 400 pcf • *Preliminary values, based on ten foot high broken slope above shoring. Values should be reevaluated based on • final slope geometry. • **Building surcharge values should be reevaluated based on further assessment of adjacent building foundation • levels, proximity, and loading. • Active Earth Pressures • A typical earth pressure distribution for an Active Earth Pressure condition is provided on Plate = 3 of this study. Allowable soldier pile deflections for walls subjected to Active Earth Pressures should be limited to approximately one-inch. • • At-Rest Earth Pressures • At-Rest pressures should be used where the shoring system will support adjacent foundation • loads, and where deflection of the shoring wall and adjacent ground subsidence must be • minimized. Where some defection is determined to be acceptable, an earth pressure based on • a value that is between the At-Rest and Active values may also be considered, as • recommended by the geotechnical engineer. Recommendations for allowable soldier pile deflections can be provided once the alignment and proximity of shoring walls to adjacent • structures has been established. The geotechnical engineer should review the shoring wall • design, and provide supplement earth pressure and building surcharge recommendations, as • appropriate. Where At-Rest Earth Pressures are applied, a triangular distribution of pressure • similar to the distribution illustrated on Plate 3 should be used. • Multiple Tieback Walls • Where deeper shored excavations will be necessary to construct the garage levels, a multiple • tieback wall may be necessary. As illustrated on Plate 4 (Multiple Tieback Wall), an apparent • earth pressure distribution should be used to design multiple tieback walls. The following • design parameters should be used for multiple tieback walls: • • Earth Solutions NW,LLC • • It,