Classic rib / versarib 20cr – Metal Sales Pro-Panel II Installation User Manual
Page 8
© Metal Sales Manufacturing Corporation / Subject to change without notice / Effective 5/09.
7
POST FRAME
& RESIDENTIAL
CLASSIC RIB / VERSARIB 20CR
3
/
4
"
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.
CLASSIC RIB ALLOWABLE UNIFORM LIVE LOADS (psf)
2 Equal Spans
Inward Load Span
Outward Load Span
Ga. Width Ksi
1.5'
2'
2.5'
3'
3.5'
4'
1.5'
2'
2.5'
3'
3.5'
4'
29
36
80
122
70
45
31
23
18
155
88
57
40
29
23
26
36
80
159
91
58
41
30
23
196
112
73
51
37
29
CLASSIC 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'-8"
3'-0"
2'-7"
2'-4"
2'-1"
1'-11"
4'-2"
3'-5"
2'-11"
2'-7"
2'-5"
2'-2"
26
36
80
4'-3"
3'-5"
3'-0"
2'-8"
2'-5"
2'-3"
4'-9"
3'-10"
3'-4"
3'-0"
2'-8"
2'-6"
CLASSIC RIB ALLOWABLE UNIFORM LIVE LOADS (psf)
3 or More Equal
Spans
Inward Load Span
Outward Load Span
Ga. Width Ksi
1.5'
2'
2.5'
3'
3.5'
4'
1.5'
2'
2.5'
3'
3.5'
4'
29
36
80
142
81
52
36
27
21
179
103
66
46
34
26
26
36
80
185
105
68
47
35
27
227
131
84
59
44
33
CLASSIC 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
4'-0"
3'-3"
2'-10"
2'-6"
2'-3"
2'-1"
4'-4"
3'-8"
3'-2"
2'-10"
2'-7"
2'-4"
26
36
80
4'-7"
3'-9"
3'-3"
2'-10"
2'-7"
2'-5"
4'-8"
4'-1"
3'-7"
3'-2"
2'-11"
2'-8"
9"
36"
Anti-Syphon Groove
C