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SITE STRUCTURES Project Everett Office Building sheet: 8 <br /> 10511 19th Ave SE, Suite C date: 2/7/08 <br /> Everett, WA, (425)-357-9600 prj. no. S-07-188 <br /> Vault Seismic Analysis <br /> Average Soil Cover Depth = sc <br /> X Vault Length = L X <br /> Wall <br /> Vault Height <br /> Width = h <br /> =W <br /> • <br /> • i <br /> PLAN <br /> SECTION <br /> Vault Length: 90 ft Soil Density: 125 pcf Wall Height h: 8.75 ft fc: 3000 psi <br /> Vault Width: 26 ft Wall Thickness: 8 in Vert Reinf: 5 fy: 60 ksi <br /> Soil Cover: 1.5 ft Number of Cells: 1 Vert Reinf Spacing: 16 "o/c <br /> Structure Dead Load Tributary to the Lid: <br /> Weight of Soil 439 k <br /> Weight of Lid 211 k <br /> Weight of Walls 102 k <br /> Total Structure Dead Load: 751 k <br /> Seismic Review: <br /> Site Zip Code: 98208 <br /> IBC Site Class: C - <br /> Design Spectral Response Accel (Sds): 0.835 <br /> Response Modification Factor: 4.0 for Ordinary Reinforced Concrete Shear Walls <br /> 1.2(Sds)/R= 0.251 V= 188 k <br /> Shear distributed over 90% of shortest length Shear capacity of concrete: <br /> of wall (d assumed to be 90%of vault width): cDvc= 7.89 klf <br /> v= 4.02 klf • <br /> Shear capacity of reinforcing: <br /> Dvc+ cDvs= 16.52 klf Ovs = 8.63 klf <br />