STRAMIT MEGACLAD®

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SELECTION & SPECIFICATION

FEATURES:

Hi-tensile Steel - lightweight with high strength.
Economical - unique combination of features provides a lower installed cost.
Less Fasteners - reduces cost of screws and installation.
800mm Cover - quick and easy installation.
Spaced Ribs - greater water carrying capacity providing longer runs.
2" Minimum Pitch - reduces support structure.
Spring Curving - ideal for curved roofs.
Less Work - fewer turn-ups and downs, less flashing, notching and fewer fasteners to install.

APPLICATIONS:

The wide cover, light weight and weather resistance of Stramit Megaclad® cladding make it perfect for many industrial, commercial and rural roofing and walling applications. Its optimized rib spacing and ease of assembly allow for economical and practical spans. The large water-carrying capacity and weather-tightness permit very low roof pitches, leading to further economies in the building structure.

MATERIALS:

Stramit Megaclad® cladding is manufactured from hi-tensile G550 BlueScope Steel COLORBOND® XRW steel or BlueScope Steel ZINCALUME® steel. In some locations galvanised and Colorbond® Ultra steel may be available by arrangement. Colorbond® XRW (and Ultra) is in accordance with AS2728 - Category 3 and, for the substrate, with AS 1397. Zincalume® AZI50 and galvanised Z450 conform to AS1397. Stramit has a comprehensive range of Colorbond® colours as standard. Refer to the BlueScope Steel Colorbond® 18 colours chart available from Stramit, and ask your nearest Stramit location for colour availability.

STRAMIT MEGACLAD® CLADDING –
MAXIMUM SHEET LENGTH (m)
roof colour	light	dark

Flat	25	17
Spring-curved	20	17

ADVERSE CONDITIONS:

Stramit Megaclad® cladding will give excellent durability in almost all locations. It is however important to choose the correct coating for each application environment. The table below shows the suitability of coating types for different exposure conditions.

suitability of coating type	site exposure condition


	benign	moderate	severe	very severe

Zincalume® AZ150		?	?
Galvanised Z450		?
Colorbond® XRW			?
Colorbond® Ultra	N/A	N/A		?

The approximate site exposure conditions in the table above are defined below.

	distance of site from


site exposure condition	rough active surf	calm, still salt water	industrial emission	fossil fuel combustion

benign	1000m +	100m +	500m +	500m +
moderate	400m-1000m	0-100m	250m-500m	250m-500m
severe	100m-400m	N/A	100m-250m	100m-250m
very severe	0-100m	N/A	0-100m	0-100m

The suitability and exposure tables above are guidelines only; conditions will vary from site to site. If in any doubt about the choice of coating for a particular application contact your nearest Stramit office for advice.

COMPATIBILITY:

All building products need to be checked for compatibility with adjacent materials. These checks need to be for both direct contact between materials, and where water runs from one material to another. The following guidelines generally avoid material incompatibility:

For Zincalume, Colorbond XRW and galvanised products avoid copper, lead, green or treated timber, stainless steel and mortar or concrete.
In addition galvanised products should not receive drainage from aluminium or any inert materials, such as plastics, glass, glazed tiles, Colorbond and Zincalume. Contact Stramit for more detailed information.

TESTING:

Stramit has in-house, purpose built, testing equipment used to design, develop and improve products for the Australian market. In addition many Stramit products are tested or witnessed by independent organisations. These include:

Cyclone Structural Testing Station
(James Cook University)
The University of Sydney
University of Technology, Sydney

This ongoing research and development activity ensures that Stramit remains at the forefront of innovation, design and consumer information.

ARCHITECTURAL SPECIFICATION:

This specification is contained in the Stramit CD-ROM 'Solutions in Steel', and can be easily loaded onto your documentation via the clipboard function.

The roofing/walling shall be 0.42 (or 0.48) mm BMT Stramit Megaclad® cladding in continuous lengths with trapezoidal ribs 28mm high, spaced at 267mm centres. Sheeting material shall be protected steel sheet to Australian Standard AS 1397, with a minimum yield stress of 550MPa (Grade G550) and an AZ 150 zinc-aluminium coating with or without an oven-baked paint film of selected colour. The sheeting shall be fixed to the purlins/girts in accordance with the manufacturer's recommendations. Suitable fixing screws in accordance with Australian Standard AS3566, Class 3, shall be used at every support with side lap fasteners installed at mid span. Sheets shall be laid in such a manner that the approved side lap faces away from the prevailing weather. A minimum of 50mm shall be provided for projection into gutters. Flashings shall be provided in compatible materials as specified; minimum cover of flashing shall be 150mm. All sheeting shall be fixed in a workman-like manner, leaving the job clean and weathertight. Repair minor blemishes with touch-up paint supplied by the roof manufacturer. All debris (nuts, screws, cuttings, filings etc.) shall be cleaned off daily.

COMPANY DETAILS

Phone: 07 5439 0990
Fax: 07 5439 0770

Address:
26 Beerwah Parade
Beerwah, Sunshine Coast
QLD 4519, Australia

Postal Address:
PO BOX 147,
Mooloolaba, Sunshine Coast
QLD 4557, Australia

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