| "U" PANEL ALLOWABLE LOAD (PSD)* | |||||||||||||||||
| SPAN IN FEET | |||||||||||||||||
| SPAN TYPE | LOAD TYPE | 1.5' | 2' | 2.5' | 3' | 3.5' | 4' | 4.5' | 5' | 5.5' | 6' | 6.5' | 7' | 7.5' | 8' | 8.5' | 9' |
| Single | Positive Wind | 386 | 217 | 139 | 96 | 70 | 54 | 42 | 34 | 28 | 24 | 20 | 17 | 15 | 13 | 12 | 10 |
| Negative Wind | 329 | 185 | 118 | 82 | 60 | 46 | 36 | 29 | 24 | 20 | 17 | 15 | 13 | 11 | 10 | 9 | |
| Live | 386 | 217 | 139 | 96 | 70 | 54 | 42 | 34 | 28 | 24 | 20 | 17 | 15 | 13 | 12 | 10 | |
| Deflection (L/180) | 492 | 207 | 106 | 61 | 38 | 25 | 18 | 13 | 9 | 7 | 6 | 4 | 3 | 3 | 2 | 2 | |
| Deflection (L/240) | 369 | 155 | 79 | 46 | 29 | 19 | 13 | 9 | 7 | 5 | 4 | 3 | 2 | 2 | 2 | 1 | |
| 2 Span | Positive Wind | 315 | 180 | 116 | 81 | 60 | 46 | 36 | 29 | 24 | 20 | 17 | 15 | 13 | 11 | 10 | 9 |
| Negative Wind | 364 | 210 | 136 | 95 | 70 | 53 | 42 | 34 | 28 | 24 | 20 | 17 | 15 | 13 | 12 | 10 | |
| Live | 315 | 180 | 116 | 81 | 60 | 46 | 36 | 29 | 24 | 20 | 17 | 15 | 13 | 11 | 10 | 9 | |
| Deflection (L/180) | 998 | 421 | 215 | 124 | 78 | 52 | 36 | 26 | 20 | 15 | 12 | 9 | 7 | 6 | 5 | 4 | |
| Deflection (L/240) | 748 | 315 | 161 | 93 | 58 | 39 | 27 | 20 | 15 | 11 | 9 | 7 | 5 | 4 | 4 | 3 | |
| 3 Span | Positive Wind | 387 | 223 | 144 | 101 | 74 | 57 | 45 | 36 | 30 | 25 | 21 | 18 | 16 | 14 | 12 | 11 |
| Negative Wind | 444 | 258 | 168 | 118 | 87 | 67 | 53 | 43 | 35 | 30 | 25 | 22 | 19 | 16 | 15 | 13 | |
| Live | 387 | 223 | 144 | 101 | 74 | 57 | 45 | 36 | 30 | 25 | 21 | 18 | 16 | 14 | 12 | 11 | |
| Deflection (L/180) | 781 | 329 | 168 | 97 | 61 | 41 | 28 | 21 | 15 | 12 | 9 | 7 | 6 | 5 | 4 | 3 | |
| Deflection (L/240) | 586 | 247 | 126 | 73 | 46 | 30 | 21 | 15 | 11 | 9 | 7 | 5 | 4 | 3 | 3 | 2 | |
| 4 Span | Positive Wind | 363 | 209 | 135 | 94 | 69 | 53 | 42 | 34 | 28 | 23 | 20 | 17 | 15 | 13 | 11 | 10 |
| Negative Wind | 418 | 242 | 157 | 110 | 81 | 62 | 49 | 40 | 33 | 28 | 23 | 20 | 17 | 15 | 14 | 12 | |
| Live | 363 | 209 | 135 | 94 | 69 | 53 | 42 | 34 | 28 | 23 | 20 | 17 | 15 | 13 | 11 | 10 | |
| Deflection (L/180) | 830 | 350 | 179 | 103 | 65 | 43 | 30 | 22 | 16 | 12 | 10 | 8 | 6 | 5 | 4 | 3 | |
| Deflection (L/240) | 622 | 262 | 134 | 77 | 49 | 32 | 23 | 16 | 12 | 9 | 7 | 6 | 4 | 4 | 3 | 2 | |
NOTES:
- Allowable uniform loads are based upon equal span lengths.
- Positive Wind is wind pressure and is not increased by 33 1/3%.
- Negative Wind is wind suction or uplift and is not increased by 33 1/3%.
- Live is the allowable live or snow load.
- Deflection (L/180) is the allowable load that limits the panels deflection to L/180.
- Deflection (L/240) is the allowable load that limits the panels deflection to L/240.
- The weight of the panel has not been deducted from the allowable loads.
- Positive Wind, Negative Wind, and Live Load values are limited to combined shear & bending using Eq. C3.3.1-1 of the AISI Specification.
- Positive Wind and Live Load values are limited by web crippling using a bearing length of 2".
- Web crippling values are determined using a ratio of the uniform load actually supported by the top flanges of the section.
- Section properties are calculated in accordance with the 2001 AISI North American Specification for the Design of Cold-Formed Steel Structural Members.
- Ix is for deflection determination.
- Se is for bending.
- Ma is the allowable bending moment.
- All values are for one foot of panel width.
*Oil canning is a natural occurance in metal and is not cause for panel rejection.
| "U" PANEL SECTION PROPERTIES | ||||||||
| TOP IN COMPRESSION | BOTTOM IN COMPRESSION | |||||||
| Panel Guage | Weight PSF | KY KSI | lx IN.4 | Se IN.3 | Ma KIP IN. | lx IN.4 | Se IN.3 | Ma KIP IN. |
| 26 | 0.87 | 80 | .0190 | .0353 | 1.3043 | .0130 | .0130 | 1.1130 |
