Page 115 - ICC IEBC 2018

APPENDIX A

540

480

420
1

360
y 0.3048 FOR m DIAPHRAGM SPAN, L OR L i (FEET) 300

240

180

3
120

2
60

0
0 2 3 3 4 5 6
DEMAND-CAPACITY RATIO, DCR

1. Region of demand-capacit ratios where crosswalls may be used to increase h/t ratios.
2. Region of demand-capacity ratios where h/t ratios of “buildings with crosswalls” may be used,
whether or not crosswalls are present.
3. Region of demand-capacity ratios where h/t ratios of “all other buildings” shall be used,
whether or not crosswalls are present.
For SI: 1 foot = 304.8 mm.

[BS] FIGURE A111.4.1
ACCEPTABLE DIAPHRAGM SPAN

96 2018 INTERNATIONAL EXISTING BUILDING CODE ®
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