ARCH 631 Note Set 8.1 S2017abn

185

Frame Analysis by Coefficients and Live Load Reduction

from Simplified Design, 3rd ed., Portland Cement Association, 2004

ARCH 631 Note Set 8.1 S2017abn

186

ARCH 631 Note Set 8.1 S2017abn

187

ARCH 631 Note Set 8.1 S2017abn

188

is the ratio of flexural stiffness of a beam section ti the slab; m is the average for all beams on edges of a panel

is the ratio of clear spans in long to short direction

is the ratio of clear spans in long to short direction

m is the average value of (ratio of flexural stiffness of beam to slab)

ARCH 631 Note Set 8.1 S2017abn

189

NOTE: The interior column strip is defined by one quarter of the smaller of 1 and 2 each side

of the column centerline. The exterior column strip is bound by the slab edge and one

quarter of the smaller of 1 and 2 from the column centerline. The middle strip is the

remaining width between column strips.

(L/D 2)

wu = 1.2wd + 1.6wl

ARCH 631 Note Set 8.1 S2017abn

190

ARCH 631 Note Set 8.1 S2017abn

191

191

ARCH 631 Note Set 8.1 S2017abn

192

192