Question

Problem 3: You are reviewing the footing design for a hospital founded on clay soils. The code requires factor of safety to be minimum 3. The controlling column load is 130 kips. The proposed footing is square with a width of 5 ft. It is founded at a depth of 3 ft in a medium to stiff clay with undrained shear strength of 1100 lb/ft2 and y-127.4 lb/ft3. The groundwater table is at a depth of 2 ft. Is this design acceptable? Please use Terzaghi's bearing capacity factors to support your answers. (10 points)

Answer 1

u tion om Given data, 3f1 ven undened shean stiength 10o 26f2 C 100 on dy focto

2. But thwte table ad a depth f on wil be enm in effected genenally effect on fivyttom heqli2i ble 23 ocde table level

2x12ą.yt C3-1)メ2x nay : 16916 3 fy 2 1.3× \100 x 5.7十043 x 167 86 x 3x\ 8573.9 n 33015 3x27305 . satt load : 5x1メ3x 2730.5 13.6 kip which unsafe