RECOMMENDED LOADING
Guidelines for selecting sheet thickness and purlin spacing (sheet supported on all four sides)
MAXIMUM PURLIN SPACING (INCHES) DEFLECTION - 1"
| LOAD PER GUAGE
(LB./FT2) | 4" WIDTH | 6" WIDTH |
| | 15 | 30 | 45 | 60 | 15 | 30 | 45 | 60 |
| 8MM | 5/16" | 38" | 28" | 18" | - | 36" | 26" | 12" | - |
| 10MM | 3/8" | 45" | 34" | 28" | 12" | 44" | 33" | 27" | 24" |
| 16MM | 5/8" | 75" | 43" | 36" | 30" | 60" | 40" | 36" | 30" |
MAXIMUM PURLIN SPACING (INCHES) DEFLECTION - 1"
| LOAD PER GUAGE
(LB./FT2) | 4" WIDTH | LOAD PER GUAGE
(LB./FT2) | 6" WIDTH |
| | 15 | 30 | 45 | 60 | | 15 | 30 | 45 | 60 |
| 10MM | 3/8" | 96" | 69" | 58" | 54" | 10MM | 3/8" | 80" | 56" | 44" | 38" |
| 16MM | 5/8" | 120" | 110" | 104" | 84" | 16MM | 5/8" | 120" | 78" | 72" | 62" |
| COMPARITIVE WEIGHTS |
| Thickness (mm) | Polycarbonate Sheet | Acrylic Sheet | Glass Single Glazing | PVC Sheet | Glass Double Glazing |
| 6 | 0.266 | 1.45 | 3.02 | 1.72 | 6.15 |
| 8 | 0.348 | 1.93 | 4.10 | 2.29 | 8.19 |
| 10 | 0.409 | 2.92 | 5.12 | 2.87 | 10.24 |
| 16 | 0.573 | 3.87 | 8.20 | - | - |