Stramit Longspan®
Stramit Longspan®. Trapezoidal long-run profile with 700 mm cover width and 27 mm ribs at 100 mm centres. Economical spanning for sheds, warehouses and commercial buildings.
- BMT Range
- 0.42 mm BMT
- Category
- roofing
- Available Colours
- Various
- 700 mm cover width
- 27 mm ribs at 100 mm centres
- 3° minimum roof pitch
- 0.42 and 0.48 BMT
- Spring curving data available
POA
Price on Application
This product is custom-cut, large-volume or project-specific. Submit a quote request and our trade desk will respond within 2 business hours.
Overview
Stramit Longspan® delivers clean lines and extended spanning capacity for commercial roofing, walling and rural shed applications. The trapezoidal 27 mm rib profile at 100 mm centres provides rigidity and water-carrying performance with conventional screw fixing and anti-capillary side laps.
Per Stramit specifications: 700 mm nominal cover width (±4 mm), 0.42 and 0.48 BMT to AS 1397 G550, minimum roof pitch 3° for roofing applications. CSA supplies Longspan® in COLORBOND and ZINCALUME with cut-to-length and project volumes quoted through the trade desk.
Technical Specifications
| Profile | Longspan |
|---|---|
| Finish | steel |
| Base metal thickness (BMT) | 0.42 mm |
| Cover width | 700.00 mm |
| Colour | Various |
| Unit of measure | LM |
| Material | steel |
| Steel base | BlueScope COLORBOND or ZINCALUME steel |
|---|---|
| Finishes | COLORBOND, COLORBOND Ultra, ZINCALUME |
| Yield strength | G550 (550 MPa minimum yield) |
| Coating | AM100 / AZ150 metallic alloy coating |
| Steel standard | AS 1397:2021 |
| Paint standard | AS/NZS 2728:2013 |
Compliance
Standards & Certifications
High-tensile steel base
Cold-rolled from G550 steel (550 MPa minimum yield strength) with a metallic alloy coating, manufactured by BlueScope to the relevant Australian Standard.
AS 1397:2021
COLORBOND prepainted finish
COLORBOND prepainted steel finishes are manufactured to the Australian Standard for prepainted steel, incorporating Activate technology for corrosion resistance and (in core colours) Thermatech solar reflectance.
AS/NZS 2728:2013
Non-combustible material
Steel made by BlueScope has an Ignitability, Spread-of-Flame and Heat-Evolved index of 0 (zero), so it may be used wherever a non-combustible material is required under the National Construction Code (NCC 2022 C2D10).
AS/NZS 1530.3
Suitable for bushfire-prone areas
Steel roofing and walling can be specified from BAL-12.5 up to BAL-FZ (Flame Zone) using compliant system details under AS 3959 and the NASH Bushfire Standard, which the NCC references as a Deemed-to-Satisfy solution.
AS 3959 / NASH
Designed and installed to standard
Metal roofing and wall cladding is designed, tested and installed to the metal roofing/cladding code, with wind actions assessed to the wind loading standard.
AS 1562.1 / AS/NZS 1170.2
Datasheets, Guides & Certificates
Manufacturer documentation for specification and compliance. Links open the original source documents.
Supplier technical datasheet and specification reference.
Supplier information pack with product overview and ordering guidance.
Deemed-to-Satisfy compliance documentation for specification under the National Construction Code.
Supplier technical specification sheet for architects and engineers.
Check eligibility and register a COLORBOND / ZINCALUME steel warranty for your project.
CSIRO AS/NZS 1530.3 test results confirming Spread-of-Flame index of 0 for BlueScope steel.
Colours Available
Use Cases
- Rural shed roofing
- Commercial warehouse
- Industrial wall cladding
- Agricultural storage
Applicable Standards
- AS 1562.1
- AS/NZS 1397
FAQ
Stramit Longspan® — Frequently Asked Questions
What is the cover width of Stramit Longspan?
Longspan has a 700 mm nominal cover width (±4 mm) with 27 mm ribs at 100 mm centres, giving an economical, clean-lined long-run sheet for sheds, warehouses and commercial roofs.
Can Longspan be curved?
Yes — Longspan can be spring-curved to convex or concave roof forms within Stramit curving limits. CSA can quote curved sheets for your radius.
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