WALL PANELS ALLOWABLE POSITIVE AND CONNECTION LOADS (PSF)
CF PANEL
SPAN
CONDITION
DESIGN
CRITERIA
SUPPORT SPAN (FEET)
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
42" WIDE
2" THICK
TWO
SPANS
BENDING & SHEAR
66.2
54.1
45.8
39.7
35.0
27.5
22.2
18.3
DEFLECTION (L/180)
97.1
75.4
60.1
48.7
40.1
33.4
28.0
23.7
CONNECTION*
30.8
25.7
22.0
19.3
17.1
15.4
14.0
12.9
CONNECTION**
57.2
47.7
40.8
35.7
31.8
28.6
26.0
23.8
THREE OR
MORE SPANS
BENDING & SHEAR
65.6
54.2
46.1
40.2
35.6
31.4
25.7
21.4
DEFLECTION (L/180)
97.8
75.3
59.3
47.4
38.4
31.5
26.1
21.8
CONNECTION*
33.8
28.2
24.2
21.1
18.8
16.9
15.4
14.1
CONNECTION**
62.7
52.2
44.8
39.2
34.8
31.3
28.5
26.1
42" WIDE
2.5" THICK
TWO
SPANS
BENDING & SHEAR
76.9
62.9
53.0
45.9
40.4
33.9
27.1
22.1
DEFLECTION (L/180)
117.2
92.2
74.5
61.3
51.2
43.3
36.9
31.7
CONNECTION*
32.6
27.2
23.3
20.4
18.1
16.3
14.8
13.6
CONNECTION**
58.9
49.1
42.1
36.8
32.7
29.5
26.8
24.6
THREE OR
MORE SPANS
BENDING & SHEAR
75.7
62.4
53.0
46.1
40.8
36.6
30.4
25.2
DEFLECTION (L/180)
118.5
92.9
74.5
60.8
50.2
41.9
35.2
29.9
CONNECTION*
35.8
29.8
25.6
22.4
19.9
17.9
16.3
14.9
CONNECTION**
64.6
53.8
46.1
40.4
35.9
32.3
29.4
26.9
42" WIDE
3" THICK
TWO
SPANS
BENDING & SHEAR
86.7
70.8
59.7
51.6
45.3
40.4
32.1
26.1
DEFLECTION (L/180)
135.0
107.2
87.4
72.7
61.3
52.3
45.0
39.0
CONNECTION*
34.5
28.7
24.6
21.5
19.1
17.2
15.7
14.4
CONNECTION**
69.7
58.1
49.8
43.6
38.7
34.9
31.7
29.0
THREE OR
MORE SPANS
BENDING & SHEAR
85.0
69.8
59.3
51.5
45.5
40.8
35.0
28.9
DEFLECTION (L/180)
136.5
108.3
88.1
72.8
60.9
51.5
43.9
37.6
CONNECTION*
37.8
31.5
27.0
23.6
21.0
18.9
17.2
15.7
CONNECTION**
76.4
63.7
54.6
47.8
42.5
38.2
34.7
31.8
42" WIDE
4" THICK
TWO
SPANS
BENDING & SHEAR
93.7
76.6
64.6
55.7
48.9
43.5
39.2
35.2
DEFLECTION (L/180)
153.0
123.1
101.8
85.8
73.4
63.6
55.6
48.9
CONNECTION*
41.1
34.3
29.4
25.7
22.8
20.6
18.7
17.1
CONNECTION**
76.1
63.4
54.3
47.6
42.3
38.0
34.6
31.7
THREE OR
MORE SPANS
BENDING & SHEAR
91.3
74.9
63.4
54.9
48.4
43.3
39.2
35.8
DEFLECTION (L/180)
154.2
124.4
102.9
86.7
74.0
63.8
55.5
48.5
CONNECTION*
45.1
37.6
32.2
28.2
25.0
22.5
20.5
18.8
CONNECTION**
83.4
69.5
59.6
52.1
46.3
41.7
37.9
34.8
Based on CF-42 panel with 26 ga. exterior & interior face (min Fy = 33 ksi). 2", 2.5", 3" and 4" thick panels have a "no-profile" exterior face. 4" and 5" thick panels have a mesa exterior profile. We do not recommend spans over 12' for 2", 2.5", 3" and 4" thick panels.
Based on attachment with U clip with (2) #12-24 SDS in min 14 ga. steel; or (2) #1/4-14 SDS in min 14 ga. steel; or (2) #1/4-14 STS in min 16 ga. steel. In lieu of self-drilling screws, self-tapping screws may be used.
Allowable positive load is the lowest value of panel bending strength, shear strength & deflection limit.
Allowable suction load is the lowest value of panel bending strength, shear strength, deflection limit and connection strength for each fastener pattern.
Connection* loads are based on side joint attachment only. Connection** loads are based on side joint attachment and additional expansion fasteners on the interior face of the panel.
The loads based on panel stress and deflection design criteria are derived from ASTM E-72 structural testing. The allowable loads are calculated with a factor of safety of 2.5 and 3.0 for bending and shear stresses, respectively, and deflection limitation of L/180.
The panel and its connection strength was determined from ASTM E1592 testing and the allowable loads are calculated with a factor of safety of 2.0.
The clip fastener capacity was determined from manufacturer fastener pullout data and the allowable loads are calculated with a factor of safety of 3.0.
The structural capacity of the support members are not considered and must be examined independently.
Consult Metl-Span for recommendations on exterior skin thickness to resist thermal stresses.
For SI: 1 foot = 305 mm, 1 psf = 47.9 Pa, 1 inch = 25.4 mm.
WALL PANELS ALLOWABLE NEGATIVE LOAD (PSF) BASED ON SIDE JOINT CONNECTION ONLY
CF PANEL
THICKNESS
SPAN CONDITION
PANEL SPAN (FEET)
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
36" WIDE
2"
TWO SPANS
39.2
31.3
26.1
22.4
19.6
17.4
15.7
14.2
13.1
2.5"
44.9
35.9
29.9
25.6
22.4
19.9
17.9
16.3
15.0
3"
49.8
39.8
33.2
28.5
24.9
22.1
19.9
18.1
16.6
2"
THREE OR MORE SPANS
43.0
34.4
28.6
24.5
21.5
19.1
17.2
15.6
14.3
2.5"
49.2
39.4
32.8
28.1
24.6
21.9
19.7
17.9
16.4
3"
54.6
43.7
36.4
31.2
27.3
24.3
21.8
19.9
18.2
Based on 26 gage minimum facings (min Fy = 33 ksi).
Based on attachment with CF panel clip with (2) 1/4"-14 Self-Drilling Tek 3 screws in min. 14 gage steel. In lieu of self-drilling screws, self-tapping screws may be used.
Allowable negative load is the lowest value of panel bending strength, shear strength, deflection limit and connection strength.
The loads based on panel stress and deflection design criteria are derived from ASTM E-72 structural testing. The allowable loads are calculated with a factor of safety of 2.5 and 3.0 for bending and shear stresses, respectively, and deflection limitation of L/180.
The panel and its connection strength was determined from ASTM E-72 testing and the allowable loads are calculated with a factor of safety of 2.5.
The structural capacity of the support members are not considered and must be examined independently.
Connection loads will increase with interior back fastening. Consult Metl-Span for loads and fastening patterns.
Allowable loads have not been increased by 1/3 for wind load design.
For SI: 1 foot = 305 mm, 1 psf = 47.9 Pa, 1 inch = 25.4 mm.
Insulation Effectiveness
Insulation
Thickness
Operating
Temperature
Thermal
Conductivity
(K-Factor)
Heat Transfer
Coefficent
(U-Value)
Thermal
Resistance
(R-Value)
2"
Ambient
.127
.063
16
2.5"
To +40F
.127
.051
20
3"
To +30F
.127
.042
24
4"
+30F to -20F
.127
.031
32
5"
-20F to -50F
.127
.025
40
6"
-50F to -70F
.127
.021
48