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::Mega Rib Links
This Is Page 3 Metal Roofing Mega-Rib Section Properties And Load Tables  

:: Page 1
Mega Rib General Information
:: Page 2
Mega Rib Panel, Trim & Accessories Pricing
:: Page 3
Mega Rib Section Properties and Load Tables

  
Better Built Metal Sales Mega-Rib metal roofing panel is easily recognized by its distinctive profile.Better Built Metal Sales Mega-Rib metal roofing panel is easily recognized by its distinctive profile.

Deep rib configurations provide optimum strength and maximum spanning capabilities. While the Mega-Rib design was intending to meet the demands of the industrial environment, design flexibility has made it a popular choice for architectural applications as well. Mega-Rib’s unique profile and high-strength characteristics also make it particularly well-suited for canopy projects.

Mega-Rib has been tested in accordance with ASTM E1680 air infiltration, ASTM E1646 water infiltration and UL 2218 Class 4 impact resistance testing.
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Mega-Rib Section Properties
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:: R-Panel		 Mega-Rib - Section Properties
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:: Soffit and Liner Panel
Panel
Gauge		 Weight
PSF		 FT
KSI		 Ix
IN.4		 Se
IN.3		 MA KIP IN. Ix
IN.4		 Se
IN.3		 Ma KIP IN.
:: Marquee II
:: Mini-Rib
29 0.77 80.0 .0546 .0564 2.704 .0546 .0564 2.704
:: Modular Metal Buildings 26 0.98 80.0 .0761 .0841 4.029 .0761 .0841 4.029
:: Modular Storage System 26 0.98 50.0 .0798 .0925 2.768 .0798 .0928 2.768
:: Retrofit Systems 24 1.22 80.0 .0987 .4472 5.471 .0987 .1142 5.471
:: Retrofit Systems 24 1.22 50.0 .1038 .1228 3.676 .1038 .1228 3.676
 1) Section properties are calculated in accordance with the 1986 Edition of Cold Formed Steel Design Manual.
 2) Ix is for deflection determination.
 3) Se is for bending.
 4) Ma is the allowable bending moment.
 5) All values are for one foot of panel width.
Mega-Rib Load Tables
Allowable Loads (PSF)* <---------- Positive Wind Load -------->
Ga. FY KSI 3 4 5 6 7' 8'

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 29 80 334 188 120 163 53 35
26 80 497 280 179 116 73 49
26 50 342 192 123 85 63 48
24 80 675 380 243 151 95 64
24 50 454 255 163 113 8 64
Allowable Loads (PSF)* <--------- Live Load -------->
Ga. FY KSI 3 4 5 6 7' 8'
29 80 .15 .27 .42 .60 .70 .80
26 80 .16 .29 .45 .60 .70 .80
26 50 .11 .19 .29 .42 .57 .75
24 80 .17 .30 .47 .60 .70 .80
 

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 24 50 .11 .19 .30 .43 .58 .76
 Notes
 1) All calculations for properties of panels are calculated in accordance with the 1986 Cold Formed Steel Manual published by the American Iron and Steel Institure (AISI).
 2) Wind loads and deflection loads are limited by a deflection of L/20.
 3) Values shown are allowable loads and are based on panels covering three or more equal continues spans. Multiply values show by 0.8 for two  (2) span conditions.
 4) Allowable loads (deflection ) for wind shown have been increased by three 33 1/3%
 5) For wind load stress only, multiply live load ( stress) by 1.33%
 6) Weight of panels must be deducted from this Value to obtain net allowable load.
 Foot Notes: (PSF)
 Oil caning is a natural occurrence in metal panels and is not a cause for panel rejection.

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