
The PBR panel’s deep ribs create an even-shadowed appearance. The area between the major ribs is reinforced with minor ribs. PBR is one of the most economical panel systems and can be used for both roof and wall applications.
Attributes
Advantages
PBR Roof – Section Properties
NEGATIVE BENDING | POSITIVE BENDING | |||||||
PANEL GAUGE | Fy KSI | WEIGHT PSF | Ixe IN.4/FT. | Sxe IN.3/FT. | Maxo KIP-IN. | Ixe IN.4/FT. | Sxe IN.3/FT. | Maxo KIP-IN. |
29 | 60* | 0.75 | 0.0219 | 0.0357 | 1.2835 | 0.0242 | 0.0234 | 0.8423 |
26 | 60* | 0.94 | 0.0302 | 0.0511 | 1.8366 | 0.0369 | 0.0372 | 1.3373 |
24 | 50 | 1.14 | 0.0404 | 0.0733 | 2.1953 | 0.0506 | 0.0521 | 1.5594 |
*Fy is 80-ksi reduced to 60-ksi in accordance with the 2001 Edition of the North American Specification For Design Of Cold-Formed Steel Structural Members – A2.3.2.
Allowable Uniform Loads In Pounds Per Square Foot
Support Spacing
29 Gauge thickness (0.0133″), Fy = 60 ksi, Fu = 61.5 ksi | ||||||||
SPAN TYPE | LOAD TYPE | Support Spacing | ||||||
3.0 | 4.0 | 5.0 | 6.0 | 7.0 | 8.0 | 9.0 | ||
1-SPAN | Wind Suction | 93.96 | 52.85 | 33.83 | 23.49 | 17.26 | 13.21 | 10.44 |
Gravity/Press | 67.01 | 32.53 | 16.66 | 9.64 | 6.07 | 4.07 | 2.86 | |
2-SPAN | Wind Suction | 61.91 | 37.19 | 24.61 | 17.42 | 12.95 | 10.00 | 7.94 |
Gravity/Press | 70.40 | 45.25 | 30.46 | 21.79 | 16.31 | 12.65 | 9.40 | |
3-SPAN | Wind Suction | 73.00 | 44.74 | 29.96 | 21.36 | 15.96 | 12.36 | 9.84 |
Gravity/Press | 80.00 | 53.51 | 36.58 | 22.72 | 14.31 | 9.59 | 6.73 | |
4-SPAN | Wind Suction | 69.50 | 42.31 | 28.22 | 20.07 | 14.97 | 11.58 | 9.21 |
Gravity/Press | 77.00 | 50.89 | 34.62 | 24.72 | 15.57 | 10.43 | 7.32 | |
26 Gauge thickness (0.0181″), Fy = 60 ksi, Fu = 61.5 ksi | ||||||||
SPAN TYPE | LOAD TYPE | Support Spacing | ||||||
3.0 | 4.0 | 5.0 | 6.0 | 7.0 | 8.0 | 9.0 | ||
1-SPAN | Wind Suction | 133.90 | 75.32 | 48.21 | 33.48 | 24.59 | 18.83 | 14.88 |
Gravity/Press | 119.08 | 52.22 | 26.74 | 15.47 | 9.74 | 6.53 | 4.58 | |
2-SPAN | Wind Suction | 114.40 | 66.58 | 43.32 | 30.37 | 22.44 | 17.24 | 13.66 |
Gravity/Press | 105.60 | 71.30 | 46.51 | 32.64 | 24.14 | 18.56 | 13.88 | |
3-SPAN | Wind Suction | 138.48 | 81.61 | 53.45 | 37.61 | 27.85 | 21.44 | 17.00 |
Gravity/Press | 120.00 | 87.15 | 57.27 | 34.84 | 21.94 | 14.70 | 10.32 | |
4-SPAN | Wind Suction | 130.69 | 76.69 | 50.12 | 35.22 | 26.06 | 20.05 | 15.89 |
Gravity/Press | 115.50 | 81.97 | 53.73 | 37.73 | 23.76 | 15.92 | 11.18 | |
24 Gauge thickness (0.0223″), Fy = 50 ksi, Fu = 60 ksi | ||||||||
SPAN TYPE | LOAD TYPE | |||||||
3.0 | 4.0 | 5.0 | 6.0 | 7.0 | 8.0 | 9.0 | ||
1-SPAN | Wind Suction | 126.84 | 71.35 | 45.66 | 31.71 | 23.30 | 17.84 | 14.09 |
Gravity/Press | 125.69 | 70.70 | 38.51 | 22.28 | 14.03 | 9.40 | 6.60 | |
2-SPAN | Wind Suction | 120.59 | 69.04 | 44.56 | 31.09 | 22.91 | 17.57 | 13.90 |
Gravity/Press | 117.33 | 69.65 | 44.96 | 31.37 | 23.11 | 17.73 | 14.03 | |
3-SPAN | Wind Suction | 148.17 | 85.44 | 55.34 | 38.68 | 28.53 | 21.90 | 17.34 |
Gravity/Press | 133.33 | 86.17 | 55.82 | 39.02 | 28.79 | 19.34 | 13.58 | |
4-SPAN | Wind Suction | 139.13 | 80.03 | 51.77 | 36.16 | 26.66 | 20.46 | 16.19 |
Gravity/Press | 128.33 | 80.71 | 52.22 | 36.48 | 26.90 | 20.57 | 14.45 | |
22 Gauge thickness (0.0286″), Fy = 50 ksi, Fu = 60 ksi | ||||||||
SPAN TYPE | LOAD TYPE | Support Spacing | ||||||
3.0 | 4.0 | 5.0 | 6.0 | 7.0 | 8.0 | 9.0 | ||
1-SPAN | Wind Suction | 164.57 | 92.57 | 59.25 | 41.14 | 30.23 | 23.14 | 18.29 |
Gravity/Press | 174.46 | 98.14 | 52.70 | 30.50 | 19.21 | 12.87 | 9.04 | |
2-SPAN | Wind Suction | 168.30 | 96.14 | 61.98 | 43.21 | 31.83 | 24.41 | 19.31 |
Gravity/Press | 159.37 | 90.89 | 58.55 | 40.81 | 30.04 | 23.04 | 18.22 | |
3-SPAN | Wind Suction | 207.24 | 119.12 | 77.03 | 53.80 | 39.67 | 30.44 | 24.09 |
Gravity/Press | 196.54 | 112.72 | 72.82 | 50.83 | 37.23 | 24.94 | 17.52 | |
4-SPAN | Wind Suction | 194.44 | 111.53 | 72.04 | 50.29 | 37.06 | 28.43 | 22.50 |
Gravity/Press | 184.31 | 105.50 | 68.08 | 47.50 | 34.99 | 26.54 | 18.64 |
Note: For 12″ panel information please contact Robertson.
The engineering data contained herein is for the expressed use of customers and design professionals. Along with this data, it is recommended that the design professional have a copy of the most current version of the North American Specification for the Design of Cold-Formed Steel Structural Members published by the American Iron and Steel Institute to facilitate design. This Specification contains the design criteria for cold-formed steel components. Along with the Specification, the designer should reference the most current building code applicable to the project jobsite in order to determine environmental loads. If further information or guidance regarding cold-formed design practices is desired, please contact the manufacturer.
EFFECTIVE NOVEMBER 3, 2004 SUBJECT TO CHANGE WITHOUT NOTICE