Standard Shear Walls - The Analysis of Irregular Shaped Structures - page 362

F i g u r e 9.26 Shear wall foundation design.

Increase the footing size to increase the dead load and the dead load moment-
resisting arm. The adjusted footing size shown at the bottom of the figure is increased
to 3′-0″ wide by 1 ft thick by 20′-0″ long. The footing length is increased to a 4 ft exten-
sion each side of the shear wall. The revised calculated dead load is 16,620 lb.

M o = 5160 19 () = 98 040 , ft-lboverturning moment

M R = 16 620 10 , ( ) = 166 200 , ft-lbresisting moment

06 . M

R =

0616 620 . (, ) = 9972 ft-lb > M

o

Therefore, the wall/foundation is stable.