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Date: 27-Sep-17 <br /> STARK U RamJack West - Foundation Underpinning Designed by: NDS <br /> FOUNDATIONS C 2501 51st Street SW <br /> rt Everett, WA <br /> Job No.: 17.174.RAM <br /> Push Pier Design-Worst Case <br /> Vertical Design Loads: <br /> Tributary Widths: <br /> Roof= 12 ft > 180 plf <br /> Chimney = 0 ft > 0 plf <br /> Second Floor= 6 ft > 90 plf <br /> First Floor= 6 ft > 90 plf <br /> Walls= 16 ft > 128 plf <br /> Foundation Wall (height) = 3 ft > 300 plf <br /> IDL= 788 plf <br /> Live: <br /> Roof(snow) = 12 ft > 300 plf <br /> Chimney= 0 ft > 0 plf <br /> Second Floor= 6 ft > 240 plf <br /> First Floor= 6 ft > 240 plf <br /> ILL= 780 plf <br /> Max Pier Trib Width = 7 ft <br /> Pier Working Loads: <br /> PDL= 5516 lbs <br /> 0.75*PLL= 4095 lbs <br /> PTL= 10000 lbs <br /> Pier Design: <br /> Pier Type Push Pier <br /> Bracket 4021.1 U Bracket Cap = 31500 lbs Therefore ok Reference ICC ESR-1854, Table 1-Foundation <br /> Mechanical Ratings of Brackets(Appendix A) <br /> Shaft Diameter 2.875" <br /> Installation Pressure, P: <br /> Quit= 2(PTL) Quit= Akyi(P) where Acyl =working area of the dual bore <br /> 20000 lbs installation cylinder <br /> kyi= 16.27 in2 <br /> Therefore, Preq = Q11/Acyl <br /> 1229 psi <br /> T ' 1I <br />