Info

Drag requirement

Yes

No

Yes

No

No

No

The maximum ultimate shear flow equal to 1.67 kip-ft occurs in the diaphragm at line A. This is less than the capacity 7.3 kip-ft. Therefore, by calculations, no shear reinforcement is required. However, provide #4 @ 18 in. the N-S direction at middepth of slab for a width equal to 5 ft.

Collector (Drag-Strut) Design. For purposes of illustration, the drag strut along line A will be designed. The collected shear of 100 kips must be delivered from the slab to the shear wall on line A. This can be done by providing reinforcement perpendicular to the wall.

Using the special seismic load combination

With one #4 reinforcement at top and bottom, and at 12-in. on centers,

= 16.9 kip-ft > 12.5 kip-ftt OK Chord Design. Chord design Tu at

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