Geotech: Problem $4$

The two columns in Figure $2$ are to be supported on a combined footing. The vertical dead loads on column A &

B are $500$ & $1400$ kN$,$ respectively. We solved the problem in class and determined B$2$ so that the resultant of the

column loads acts through the centroid of the footing.

If in addition to these dead loads, Columns A & B in Figure $2$ also can carry vertical live load up to $800$ & $1200$

kN$,$ respectively. The live loads vary with time, and thus may be present some days and absent other days. In

addition the live load on each column is independent of that on the other column $($i$.$e one could be carrying the

live load while the other has zero live load$).$ Using the dimension obtained for B $2$ and the worst possible

combination of live loads, determine if the bearing pressure distribution always meets the eccentricity

requirements. The groundwater table is at a depth of $10$ m$.$