Bi-rib / versarib 20br – Metal Sales Pro-Panel II Installation User Manual
Page 9
© Metal Sales Manufacturing Corporation / Subject to change without notice / Effective 5/09.
8
POST FRAME
& RESIDENTIAL
BI-RIB / VERSARIB 20BR
1. Section properties and allowable loads are calculated per AISI 2001 including 2004 Supplement.
2. Ixx and Sxx are effective section properties for deflection and bending.
3. Allowable loads/spans are calculated considering bending, shear, combined bending and shear and deflection.
4. Allowable load/span calculations do not include consideration for web crippling, fastener / connection limitations or uplift testing.
5. Allowable loads/spans do not include a 1/3 stress increase.
BI-RIB ALLOWABLE UNIFORM LIVE LOADS (psf)
2 Equal Spans
Inward Load Span
Outward Load Span
Ga. Width Ksi
1'
1.5'
2'
2.5'
3'
3.5'
1'
1.5'
2'
2.5'
3'
3.5'
29
36
80
236
107
61
39
26
16
247
113
64
41
26
16
26
36
80
299
136
77
49
31
20
317
144
82
53
31
20
BI-RIB ALLOWABLE SPANS
2 Equal Spans
Inward Load (psf)
Outward Load (psf)
Ga. Width Ksi
20
30
40
50
60
70
20
30
40
50
60
70
29
36
80
3'-3"
2'-10"
2'-5"
2'-2"
2'-0"
1'-10"
3'-3"
2'-10"
2'-6"
2'-3"
2'-0"
1'-10"
26
36
80
3'-5"
3'-0"
2'-9"
2'-5"
2'-3"
2'-1"
3'-5"
3'-0"
2'-9"
2'-6"
2'-3"
2'-1"
BI-RIB ALLOWABLE UNIFORM LIVE LOADS (psf)
3 or More Equal
Spans
Inward Load Span
Outward Load Span
Ga. Width Ksi
1'
1.5'
2'
2.5'
3'
3.5'
1'
1.5'
2'
2.5'
3'
3.5'
29
36
80
273
125
69
35
20
13
286
131
69
35
20
13
26
36
80
346
158
82
42
24
15
366
168
82
42
24
15
BI-RIB ALLOWABLE SPANS
3 or More Equal
Spans
Inward Load (psf)
Outward Load (psf)
Ga. Width Ksi
20
30
40
50
60
70
20
30
40
50
60
70
29
36
80
3'-0"
2'-7"
2'-4"
2'-2"
2'-1"
1'-11"
3'-0"
2'-7"
2'-4"
2'-2"
2'-1"
1'-11"
26
36
80
3'-2"
2'-9"
2'-6"
2'-4"
2'-2"
2'-1"
3'-2"
2'-9"
2'-6"
2'-4"
2'-2"
2'-1"
7
/
16
"
9"
36"
Anti-Syphon Groove
C