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Panel Core
Thickness
Deflection
Panel Span (ft.)
4’ 8’ 10’ 12’ 14’ 16’ 18’ 20’ 22’ 24’
9 1/4”
L/360 274 188* 116 100 80 58 47 36 32 28
L/240 326* 188* 147* 134* 120 90 70 52 46 41
L/180 326* 188* 147* 134* 121* 108* 93 68 61 53
11 1/4”
L/360 327* 188* 167* 140 116 90 75 57 47 36
L/240 327* 188* 167* 153* 132* 110* 97* 83* 69 53
L/180 327* 188* 167* 153* 132* 110* 97* 83* 83* 70
* indicates ultimate load divided by 3 for the design capacity.
2X’s are Hem-Fir #2 or equivalent.
4’ span is a minimum two span condition.
Panels require a minimum of 1-1/2” bearing.
Lumber splines are spaced 4’ o.c.
Floor panels should have a 3/4” minimum top skin or a 7/16” top skin overlayed with 7/16” finish flooring perpendicular to the panels.
More information on this chart can be found in Technical Bulletin #19 (www.pbssips.com).
Refer to Technical Bulletin #21 for floor applications (www.pbssips.com).
Maximum Roof SpanMaximum Floor Span