Question

GS 1 1.1m Sand, 7-18kN/m 0-36 1.2m Sand, y=15KNm €=320 GWT Sand, Yur=18KN m =320

A rectangular footing (1.5m x 2.0m) founded on sand. The footing was designed using a factor of safety equal to 3.0 and a design load of 1800 kN. When constructed the contactor displaced the center of the column by 0.26 m away from the center of footing in the long direction and the column was inclined 8o from the vertical. Determine The factor of safety against maximum contact pressure if q'u=890 kPa? unit weight of water=10kN/m3

Answer 1

ANSWER

Given that Dintensions of a rectangular fooling (1-5 m 12.0m) Depth of fooling, ofc And for recluang ular footing, 1215 m (Prosa) Max stress on fooling ( pcos **) LXB As loadis Ecentric B = CB-269) z Tz-{240-26) *-0.52 1- 48 m 1600X(05 8° 1.5 x 1.48 ... Max Stress ( 18.00 (180 1800X0.99 2.22 -/ 1782.48 २.२२ z 802.9 kN/m . Max strength a'uz 890 kNm factor of safely aganist, 890 kra 802-4 Max contact Pressure. (Ros) = ( 2 1)