Panels

product-pbu

  • Description
  • PBU Properties
  • Allowable Uniform Loads

The PBU panel is an exposed fastener system that can be used for both roof and wall applications. PBU can be installed directly over purlins or joists. PBU offers the versatility of being used in both vertical and horizontal applications to give designers a contemporary appearance for their building project. PBU is recommended for 1/2:12 or greater roof slopes.

Gauge
  • 26 gauge (standard)
  • 29,24,22 gauge (optional)

 

Length
  • Maximum 40′ (standard), other lengths are available as special requests

 

Dimensions
  • 36″ coverage by 3/4″ deep
Finish
  • Galvalume Plus®
  • Signature® 200
  • Signature® 300

 

Limitations
  • Recommended for roof slopes of 1/2:12 or greater.

PBU – 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 0.0112 0.0239 0.8579 0.016 0.0270 0.9714
26 60* 0.94 0.0304 0.0514 1.848 0.0371 0.0374 1.3456
24 50 1.14 0.0214 0.0494 1.4796 0.0031 0.0555 1.6618
22 50 1.44 0.0301 0.0731 2.1897 0.0419 0.0754 2.2565

 

Properties Notes:

*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.

  1. All calculations for the properties of PBU panels are calculated in accordance with the 2001 edition of the North American Specification For Design Of Cold-Formed Steel Structural Members.
  2. Ixe is for deflection determination.
  3. Sxe is for bending.
  4. Maxo is allowable bending moment.
  5. All values are for one foot of panel width.

Allowable Uniform Loads In Pounds Per Square Foot

drawing_pbu

29 Gauge (Fy = 60 Ksi)
SPAN TYPE LOAD TYPE SPAN IN FEET
3.0 4.0 5.0 6.0 7.0 8.0 9.0
SINGLE NEGATIVE WIND LOAD 63.5 35.7 22.9 15.9 11.7 8.9 7.1
LIVE LOAD/
DEFLECTION
51.8 21.9 11.2 6.5 4.1 2.7 1.9
2-SPAN NEGATIVE WIND LOAD 72.0 40.5 25.9 18.0 13.2 10.1 8.0
LIVE LOAD/
DEFLECTION
63.5 35.7 22.9 15.6 9.8 6.6 4.6
3-SPAN NEGATIVE WIND LOAD 89.9 50.6 32.4 22.5 16.5 12.6 10.0
LIVE LOAD/
DEFLECTION
79.9 41.2 21.1 12.2 7.7 5.2 3.6
4-SPAN NEGATIVE WIND LOAD 84.0 47.2 30.2 21.0 15.4 11.8 9.3
LIVE LOAD/
DEFLECTION
74.2 41.7 22.4 13.0 8.2 5.5 3.8
26 Gauge (Fy = 60 Ksi)
SPAN TYPE LOAD TYPE SPAN IN FEET
3.0 4.0 5.0 6.0 7.0 8.0 9.0
SINGLE NEGATIVE WIND LOAD 92.5 52.0 33.3 23.1 17.0 13.0 10.3
LIVE LOAD/
DEFLECTION
75.8 32.0 16.4 9.5 6.0 4.0 2.8
2-SPAN NEGATIVE WIND LOAD 108.6 61.1 39.1 27.2 20.0 15.3 12.1
LIVE LOAD/
DEFLECTION
92.5 52.0 33.3 22.8 14.4 9.6 6.8
3-SPAN NEGATIVE WIND LOAD 135.8 76.4 48.9 33.9 24.9 19.1 15.1
LIVE LOAD/
DEFLECTION
115.6 60.3 30.9 17.9 11.3 7.5 5.3
4-SPAN NEGATIVE WIND LOAD 126.8 71.3 45.6 31.7 23.3 17.8 14.1
LIVE LOAD/
DEFLECTION
108.0 60.7 32.8 19.0 11.9 8.0 5.6
24 Gauge (Fy = 60 Ksi)
SPAN TYPE LOAD TYPE SPAN IN FEET
3.0 4.0 5.0 6.0 7.0 8.0 9.0
SINGLE NEGATIVE WIND LOAD 109.6 61.7 39.5 27.4 20.1 15.4 12.2
LIVE LOAD/
DEFLECTION
100.4 42.3 21.7 12.5 7.9 5.3 3.7
2-SPAN NEGATIVE WIND LOAD 123.1 69.2 44.3 30.8 22.6 17.3 13.7
LIVE LOAD/
DEFLECTION
109.6 61.7 39.5 27.4 19.0 12.7 9.0
3-SPAN NEGATIVE WIND LOAD 153.9 86.6 55.4 38.5 28.3 21.6 17.1
LIVE LOAD/
DEFLECTION
137.0 77.1 40.9 23.7 14.9 10.0 7.0
4-SPAN NEGATIVE WIND LOAD 143.7 80.8 51.7 35.9 26.4 20.2 16.0
LIVE LOAD/
DEFLECTION
127.9 72.0 43.4 25.1 15.8 10.6 7.4
22 Gauge (Fy = 60 Ksi)
SPAN TYPE LOAD TYPE SPAN IN FEET
3.0 4.0 5.0 6.0 7.0 8.0 9.0
SINGLE NEGATIVE WIND LOAD 162.2 91.2 58.4 40.6 29.8 22.8 18.0
LIVE LOAD/
DEFLECTION
135.6 57.2 29.3 17.0 10.7 7.2 5.0
2-SPAN NEGATIVE WIND LOAD 167.1 94.0 60.2 41.8 30.7 23.5 18.6
LIVE LOAD/
DEFLECTION
160.5 91.2 58.4 40.6 25.7 17.2 12.1
3-SPAN NEGATIVE WIND LOAD 208.9 117.5 75.2 52.2 38.4 29.4 23.2
LIVE LOAD/
DEFLECTION
197.2 108.0 55.3 32.0 20.1 13.5 9.5
4-SPAN NEGATIVE WIND LOAD 195.1 109.7 70.2 48.8 35.8 27.4 21.7
LIVE LOAD/
DEFLECTION
185.2 106.5 58.7 34.0 21.4 14.3 10.1

 

Allowable Uniform Loads Notes:
  1. Allowable loads are based on uniform span lengths and Fy = 50 and 60-ksi.
  2. LIVE LOAD is limited by bending, shear, combined shear and bending and web crippling.
  3. NEGATIVE WIND LOAD does not contain a 33.333% increase and does not consider fastener pullout or pullover.
  4. Above loads consider a maximum deflection ratio of L/180.
  5. The w eight of the panel has not been deducted from the allow able loads.
  6. The use of any accessories other than those provided by the manufacturer may damage panels, void all warranties and w ill void all engineering data.
  7. This material is subject to change without notice. Please contact Robertson for most current data.

The Engineering data contained herein is for the expressed use of customers and design professionals. Along w ith 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 JANUARY, 2014 SUBJECT TO CHANGE WITHOUT NOTICE

  • PBU is a registered trademark of the NCI Group, Inc.
  • Galvalume Plus® is a registered trademark of BIEC International, Inc.
  • Signature® is a registered trademark of the NCI Group, Inc..