Design Considerations for Earthquake Forces - Simplified Design of Reinforced Concrete Buildings - page 303

Table 11-8 Forces at the Base of Shear Walls E-W Direction

Load Case Axial Force Bending Moment Shear Force

(kips) (ft-kips) (kips)

Dead load D 122 0

Roof live load L r 2.2 0

Live load L 10.5 0

Wind W 0 535 14.5

Earthquake E 0 3560 79

Table 11-9 Factored Axial Forces, Moment and Shear (E-W direction)

Load Combinations P u

(kips)

M u
(ft-kips)

V u
(kips)

Eq. (9-1) U = 1.4D

170.8 0 0

Eq. (9-2) U = 1.2D + 1.6L + 0.5L r

164.3 0 0

Eq. (9-3) U = 1.2D + 1.6L r + 0.5L

155.17 0 0

U = 1.2D + 1.6L r + 0.8W

149.92 428 11.6

U = 1.2D + 1.6L r - 0.8W

149.92 -428 -11.6

Eq. (9-4) U = 1.2D + 1.6W + 0.5L+ .5L r

152.75 856 23.2

U = 1.2D - 1.6W + 0.5L+ 0.5L r

152.75 -856 -23.2

Eq. (9-5) U = 1.2D + E + 0.5L

151.65 3560 79

U = 1.2D - E + 0.5L

151.65 -3560 -79

Eq. (9-6) U = 0.9D + 1.6W

109.8 856 23.2

U = 0.9D - 1.6W

109.8 -856 -23.2

Eq (9-7) U = 0.9D + 1.0E

109.8 3560 79

U = 0.9D - 1.0E

109.8 -3560 -79

Design for shear

The maximum factored shear force From Table 11-9:

V u = 79 kips