STRAMIT® CURVED CORRUGATED

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SELECTION & SPECIFICATION

FEATURES:

Design flexibility - expands the versatility of traditional corrugated roofing by increasing flexibility of design
Variety of shapes - can be formed into a wide variety of curved shapes and radii down to a nominal 500mm minimum
Compatible with standard Stramit® Corrugated sheeting - profile compatibility allows end lapping on long runs
Easy fixing - conventional through-fixed screws maximise performance and ease of installation
762mm cover - quick installation and easy handling
G300 curving quality base steel - also available as flat sheets to ensure matching profile on end laps
Fully tested - full range of load performance tables to suit most applications.

APPLICATIONS:

Stramit® Curved Corrugated steel roofing can be pre-curved to produce a variety of interesting effects that enhance both modern and traditional building designs. Straight sheets can be combined with convex and concave curves to create highly original and aesthetically pleasing roof shapes.

The heritage bullnose veranda is the best-known application of curved corrugated sheeting but by no means the only one. Stramit® Curved Corrugated roofing is also a popular choice on contemporary steel-roofed homes and commercial buildings.

MATERIALS:

Stramit® Curved Corrugated cladding is manufactured from G300 BlueScope Steel COLORBOND® Ultra steel or BlueScope Steel ZINCALUME® steel. In some locations galvanised and BlueScope Steel COLORBOND® Stainless steel may be available by arrangement. BlueScope Steel COLORBOND® Ultra (and Stainless steel) is in accordance with AS2728 - Category 3 and, for the substrate, with AS 1397. BlueScope Steel ZINCALUME® AZ 150 and galvanised Z450 conform to AS1397.

Stramit Building Products has a comprehensive range of BlueScope Steel COLORBOND® colours as standard. Refer to the BlueScope Steel COLORBOND® 18 colours chart available from Stramit, and ask your nearest Stramit office for colour availability.

STRAMIT® CURVED CORRUGATED CLADDING - SHEETING MASS (kg/m2 of roof area)
thickness bmt	grade	Zincalume	Colorbond	Galvanised

0.60mm	300MPa	6.02	6.09	6.39

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)
University of Queensland

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

ADVERSE CONDITIONS :

Stramit® Curved Corrugated 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 ULTRA			?
Colorbond Stainless	N/A	N/A		?

? Question marks indicate conditions where durability may be diminished, depending on the particular application.

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

site exposure condition	distance of site from


	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 BlueScope Steel ZINCALUME®, BlueScope Steel COLORBOND® Ultra and galvanised roofs avoid copper, lead, green or treated timber, stainless steel and mortar or concrete.
In addition galvanised roofs should not receive drainage from aluminium or any inert materials, such as plastics, glass, glazed tiles. BlueScope Steel COLORBOND® and BlueScope Steel ZINCALUME® steel. Contact Stramit for more detailed information.

ARCHITECTURAL SPECIFICATION:

The roofing/walling shall be 0.60mm BMT Stramit® Corrugated in continuous lengths with sinusoidal curved ribs 16mm high spaced at 76.2mm centres in accordance with AS 1445, curved to a radius of __ mm. Sheeting material shall be protected steel sheet to Australian Standard AS 1397 with a minimum yield stress of 300MPa (Grade 300) 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 fixed 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. Flashing shall be supplied in compatible materials as specified; minimum cover of flashing shall be 150mm. AII sheeting shall be fixed in a workman-like manner, leaving the job clean and weather tight. All debris (nuts, screws, cuttings, filling, etc.) shall be cleared off daily.

TYPICAL CURVED PROFILES:

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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