Diaphragms With Openings - The Analysis of Irregular Shaped Structures - page 204

Collector forces at grid line 2, summing from grid line D:

Location (Grid Line) Force

2 at C F 2C = (430.9 - 127.2)16 = 4859.2 lb tension

2 at B F 2B = 4859.2 - (448.8)24 = -5912 lb compression

2 at A F 2A = -5912 + (610 - 19.4)10 = 0 lb compression

Determine the right transfer diaphragm shears, net shears, and transverse collector forces
(Fig. 5.11).
Right transfer diaphragm shears:

1
50

2414.. 1

= 160 9 . plf

V =- [ 4131 216 . () + 4670 140 .( )] = 2414 1 . lb v =

A A

15

Completing the remaining shear forces on the sheathing element shows that the shear
is negative.

1
50

1875.. 2
15

V =- [ 4670 110 . () + 4131 234 .( )] = 1875 2 . lb v = = 125 plf

D A

F i g u r e 5.11 Right transfer diaphragm shears, net shears, and collector forces.