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≔C 1 C 2 LS 1 .4 <br />≔D C R I O =――――― <br />⋅χ Vu 1E <br />⋅⋅C 1 C 2 I O J Vn <br />0 .5 1 3 <br />≔D C R LS =――――― <br />⋅χ V u 2 E <br />⋅⋅C 1 C 2LS J V n <br />0.9 0 1 <br />Gridline 3.5 Grade Beam Design <br />≔V B S E 1 E 9 5.8 k i pkipkipkip ≔V B S E 2 E 20 4 .2 k i pkipkipkip <br />Conservative free body <br />diagram to compute grade <br />beam demands. <br />≔R B S E 1 E =⋅VB S E 1 E ―――1 5 f tftftft <br />1 2.5 f tftftft <br />11 4.9 6 k i pkipkipkip <br />≔R B S E 2 E =⋅VB S E 2 E ―――1 5 f tftftft <br />1 2.5 f tftftft <br />24 5.0 4 k i pkipkipkip <br />≔M B S E 1E =⋅R B S E 1E 1 2.5 f tftftft ⎛⎝⋅1 .4 3 7 10 3 ⎞⎠⋅k i pkipkipkip f tftftft <br />≔M B S E 2E =⋅R B S E 2E 1 2.5 f tftftft ⎛⎝⋅3 .0 6 3 10 3 ⎞⎠⋅k i pkipkipkip f tftftft <br />≔V u 1E R B S E 1 E <br />≔V 2E R B S E 2 E <br />Bending Capacity Check (36"x24" grade beam with (8) #8 T&B and #5 ties @ 6") <br />≔b 3 6 i nininin <br />≔d =---2 4 i nininin 3 i nininin 0 .6 25 i nininin 0 .5 i nininin 1 9.87 5 i nininin <br />40 of 100 <br />1327 S Grand Ave <br />12/12/2024