PermaTherm’s PHF43 span and load data is provided for common applications utilizing insulated metal panels and is provided in the following tables.
For questions about your application, don’t hesitate to contact Permatherm and the project management team for assistance.
PermaCore PHF43 Panel – 26 Ga Exterior / 26 Ga Interior
Allowable Single Span for Inward or Outward Distributed Load (5 psf)
| Panel Thickness |
Design Criteria |
Allowable Span |
| Bending Stress |
Shear Stress |
Deflection Limit |
| 2″ |
25′-26″ |
50′-0″* |
21′-0″ |
21′-0″ |
| 2.5″ |
28′- 7″ |
50′- 0″* |
24′- 8″ |
24′- 8″ |
| 3″ |
31′- 4″ |
50′- 0″* |
28′- 1″ |
28′ 1″ |
| 4″ |
36′- 4″ |
50′- 0″* |
34′-5″ |
34′- 5″ |
| 5″ |
42′- 7″ |
50′- 0″* |
40′- 0″ |
40′- 0″ |
| 6″ |
48′- 9″ |
50′- 0″* |
45′- 4″ |
45′- 4″ |
| 8″ |
50′- 0″* |
50′- 0″* |
50′- 0″* |
50′- 0″* |
Notes:
- Based on Allowable Stress Design (ASD).
- Allowable spans shown apply to 43″-wide panels with minimum 26 Ga exterior/interior steel facers and PIR foam core in single span.
- Allowable spans shown are the lowest value of panel bending strength, shear strength, and deflection limit (L/120), derived from transverse load testing per ASTM E72.
- Safety factors are 2.25 for bending strength and 3.0 for shear strength.
- Allowable spans address panel failure modes only. Structural capacity of attachment system must be examined separately.
- * indicates panel span limited to maximum panel length.
- Loads from thermal bow or stress are not considered here.
- Information derived from this analysis shall be used only by individuals familiar with composite panel design.
PermaCore PHF43 Panel – 26 Ga Exterior / 26 Ga Interior
Allowable Single Span for Inward or Outward Distributed Load (5 psf)
Panel Strength, Deflection Limit Criteria (L/120), and Temperature Differential
| Panel Thickness |
Temperature Differential |
| 𝝙=0°F |
𝝙=35°F |
𝝙=70°F |
𝝙=105°F |
| 2″ |
21′- 0″ |
17′- 8″ |
14′- 7″ |
12′- 1″ |
| 2.5″ |
24′- 8″ |
21′- 1″ |
17′- 8″ |
14′- 9″ |
| 3″ |
28′- 1″ |
24′- 3″ |
20′- 7″ |
17′-5″ |
| 4″ |
34′-5″ |
30′-2″ |
26′- 1″ |
22′-5″ |
| 5″ |
40′- 0″ |
35′-5″ |
31′- 0″ |
26′- 11″ |
| 6″ |
45′- 4″ |
40′-5″ |
35′- 8″ |
31′- 3″ |
| 8″ |
50′- 0″* |
49′-6″ |
44′- 3″ |
39′- 4″ |
Notes:
- Based on Allowable Stress Design (ASD).
- Allowable spans shown apply to 43″-wide panels with minimum 26 Ga exterior/interior steel facers and PIR foam core in single span.
- Allowable spans shown are the lowest value of panel bending strength, shear strength, and deflection limit (L/120), derived from transverse load testing per ASTM E72.
- Safety factors are 2.25 for bending strength and 3.0 for shear strength.
- Allowable spans address panel failure modes only. Structural capacity of attachment system must be examined separately.
- * indicates panel span limited to maximum panel length.
- Loads from thermal bow or stress are not considered here.
- Information derived from this analysis shall be used only by individuals familiar with composite panel design.
PermaCore PHF43 Panel – 26 Ga Exterior / 26 Ga Interior (Ceiling Span)
Allowable Single Span for Inward or Outward Distributed Load (5-35 psf)
Panel Strength & Deflection Limit Criteria (L/240)
| Panel Thickness |
Distributed Load |
| 5 psf |
10 psf |
15 psf |
20 psf |
25 psf |
30 psf |
35 psf |
| 2″ |
16′ 1″ |
12′- 1″ |
10′- 0″ |
8′-8″ |
7′- 9″ |
7′- 0″ |
6′- 4″ |
| 2.5″ |
19′- 0″ |
14′-5″ |
12′- 1″ |
10′- 7″ |
9′-6″ |
8′- 8″ |
7′- 11″ |
| 3″ |
21′- 9″ |
16′- 7″ |
14′- 0″ |
12′- 4″ |
11′- 2″ |
10′- 3″ |
9′-5″ |
| 4″ |
26′- 10″ |
20′-8″ |
17′- 8″ |
15′-8″ |
14′- 3″ |
13′- 2″ |
12′- 3″ |
| 5″ |
31′- 3″ |
24′- 2″ |
20′- 7″ |
18′- 4″ |
16′- 8″ |
15′-5″ |
14′-5″ |
| 6″ |
35′-5″ |
27′- 4″ |
23′-5″ |
20′- 10″ |
19′- 0″ |
17′- 7″ |
16′ 5″ |
| 8″ |
42′- 11″ |
33′- 3″ |
28′-5″ |
25′- 4″ |
23′- 1″ |
21′- 4″ |
19′- 11″ |
Notes:
- Based on Allowable Stress Design (ASD).
- Allowable spans shown apply to 43″-wide panels with minimum 26 Ga exterior/interior steel facers and PIR foam core in single span.
- Allowable spans shown are the lowest value of panel bending strength, shear strength, and deflection limit (L/240), derived from transverse load testing per ASTM E72.
- Safety factors are 2.25 for bending strength and 3.0 for shear strength.
- Allowable spans address panel failure modes only. Structural capacity of attachment system must be examined separately.
- Loads from thermal bow or stress are not considered here.
- Information derived from this analysis shall be used only by individuals familiar with composite panel design.
