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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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