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≔bf 1 2 i nininin Width of footing <br />≔q =―― <br />P UD <br />⋅bf L f <br />5 6 1 .4 88 p s fpsfpsfpsf <br />≔qa 2 5 00 p s fpsfpsfpsf allowable bearing pressure per geotechnical report <br />≔qc =⋅3 qa 7 5 0 0 p s fpsfpsfpsf 41-17 Bearing Capacity, Eqn 8-1 <br />≔C v 1 .0 <br />The m-factors are given in 41-17 Section 8.4.2.3.2. The m-factors shown below are <br />for overturning. <br />≔m I O 2 .0 <br />≔m LS 3.0 <br />≔M C E _I O =⋅――――― <br />⋅⋅m I O L f P UD <br />2 <br />⎛ <br />⎜ <br />⎝ <br />-1 ――――q <br />⋅⎛⎝+1 C v ⎞⎠q c <br />⎞ <br />⎟ <br />⎠ <br />5 3 9 ⋅k i pkipkipkip f tftftft <br />≔M C E _LS =⋅――――― <br />⋅⋅m LS L f P U D <br />2 <br />⎛ <br />⎜ <br />⎝ <br />-1 ――――q <br />⋅⎛⎝+1 C v ⎞⎠qc <br />⎞ <br />⎟ <br />⎠ <br />8 09 ⋅k i pkipkipkip f tftftft <br />Check foundation overturning <br />≔D C R be a r i n g_I O =――― <br />M I O <br />M C E _I O <br />2.6 0 2 <br />≔D C R be a r i n g_L S =――― <br />M L S <br />M C E _LS <br />3 .69 7 <br />The above DCRs are greater than 1.0, but 41-17 allows the m factors to be <br />increased where uplift is present (foundation fails overturning check) in order <br />to satisfy the foundation bearing/overturning. The m-factor is also applied to <br />the restoring dead load. <br />Check foundation uplift <br />≔m I O _u p l i f t 4.0 <br />≔m LS _u p li f t 6.0 <br />27 of 100 <br />1327 S Grand Ave <br />12/12/2024