  Product Description The Mega Rib is another premium profile roll formed from high-strength steel. This profile is the economic alternative to CL 660, except that it has to be installed using screws. The high ribs and wide pans of the Mega Rib ensure excellent rain water flow capacity and good spanning capability. Mega Rib comes in two different profiles; Mega Rib 30 and Mega Rib 35. Mega Rib 30 has a rib height of 30mm and an effective width of 750mm. Mega Rib 35 has a rib height of 35mm and an effective width of 723mm. Both are designed for a minimum roof pitch of 2 degrees. Applications When installed properly according to manufacturer instructions, this profile guarantees a watertight roof cover. Mega Rib is versatile and is equally suited for use as cladding and fascia. Materials Available - Clean Colorbond® Steel
- Zincalume® steel
- PrimaMajuTM steel
- Pre-painted Galvanised Iron (PPGI)
SECTIONAL PROFILE 
Dimensions Tolerance Rib height : 35mm Thickness for material : + 0.03mm Effective cover : 723mm Effective width : + 3mm Minimum roof pitch : 2° Finishing length : + 5mm TECHNICAL DATA AVAILABLE THICKNESS Base Metal Thickness (mm) | Total Coated Thickness (mm) | Weight (kg/m2) | Steel Grade | Min. Yield Strength (MPa) | 0.35 | 0.40 | 4.10 | AS1397 | G550 | 0.42 | 0.48 | 5.00 | AS1397 | G550 | 0.48 | 0.55 | 5.60 | AS1397 | G550 |
other thicknesses are subject upon stock availability and time delivery RECOMMENED MAXIMUM ROOF LENGTH (M) Slope in Degree Rainfall (mm/h) | 2° | 5° | 7° | 10° | 12° | 250 | 85 | 109 | 129 | 155 | 170 | 300 | 70 | 91 | 108 | 129 | 141 | 350 | 60 | 78 | 92 | 110 | 121 | 400 | 53 | 68 | 81 | 97 | 106 |
Based on maximum water level at 19mm RECOMMENDED MAXIMUM SPACING OF SUPPORT Base Metal Thickness (mm) | ROOFS* | WALLS** | End Span (mm) | Internal Span (mm) | Cantilever (mm) | End Span (mm) | Internal Span (mm) | Cantilever (mm) | 0.35 | 1400 | 1500 | 200 | 1400 | 2600 | 250 | 0.42 | 1600 | 1800 | 200 | 1700 | 2900 | 250 | 0.48 | 2000 | 2000 | 200 | 2500 | 3100 | 250 | | *Based in 75kg/m2 design live load | ** Based on 40m2 design wind load |
Installation Section View (Roof) 
Plan View (Roof) 
Corner Capping Detail 
Gable End Detail 
Screw Fixing 
CREST FIXING OF MEGA RIB 
Crest fixing to steel Crest fixing to timber No. 12 x 55mm self drilling and No. 10 x 68mm self drilling and tapping Hexagon Head Screw with Hexagon Head Screw with pre-assembled neoprene bonded pre-assembled neoprene bonded steel washer. steel washer. 
VALLEY FIXING OF MEGA RIB 
Valley fising to steel Valley fising to timber No. 10 x 20mm self drilling and No. 10 x 30mm self drilling and tapping Hexagon Head Screw with Hexagon Head Screw with pre-assembled neoprene bonded pre-assembled neoprene bonded steel washer. steel washer. | 
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