ST7® PRODUCT TECHNICAL STATEMENT
ST7® is a medium rib trapezoidal profile of popular configuration. The profile of ST7® gives a classic look to all types of work, while the higher ribs give enhanced performance compared to low rib products, allowing better purlin/roofing design optimisation on commercial projects.
635mm EFFECTIVE COVER
• Durability: All material selections must be compatible with prevailing environmental conditions and adjacent materials. Areas not exposed to rain washing will require programmed maintenance.
The product will, if used in accordance with Steel & Tube’s installation and maintenance requirements, assist with meeting the following provisions of the building code: • Clause B1 Structure: Performance B1.3.3(a), B1.3.3(b), B1.3.3(g), B1.3.3(h) • Clause B2 Durability: Performance B2.3.1(b), B2.3.1(c) • Clause C3 Fire affecting areas beyond the fire source: Performance C3.9 • Clause E2 External moisture: Performance E2.3.1, E2.3.2 • Clause G12 Water supplies: Performance G12.3.2 • Clause F2 Hazardous building materials To comply with the performance clause of NZBC clause E2 roof cladding to be installed in accordance with: • • • •
Acceptable Solution NZS E2/AS1 NZ Metal Roofing Manufacturers Code of Practice Steel & Tube specifications Steel & Tube details are available on steelandtube.co.nz
Steel & Tube ST7® is not subject to a warning or ban under section 26 of the New Zealand Building Act 2004.
0800 427 663 steelandtube.co.nz Disclaimer: This data should be used as a guide only, for exact applications, engage the services of a qualified engineer.
PRODUCT TECHNICAL STATEMENT
• Minimum Pitch: 3°. Roof runs in excess of 65 metres should be checked for water runoff capacity. • Effective Cover: 889mm • Applications: Residential, Industrial/Commercial Roofing & Wall Cladding. • Available nationwide: Manufactured in Wellington. • Materials: Specify coating and material based on environmental conditions in accordance with NZS E2/AS1. Available in metallic coated and pre-painted steel in 0.40mm and 0.55mm BMT (base metal thickness), and pre-painted aluminium in 0.90mm BMT. Matching translucent sheeting is available in G.R.P. (fibreglass). • Options: Reverse Run – for pan-out wall cladding, colour (if any) is to the outward facing side of the sheet. For this configuration it should be specified and ordered as STC7. The product can also be run with five ribs, normally to utilise common width coil stocks, in which case it is referred to as ST5.
NEW ZEALAND BUILDING CODE COMPLIANCE
NOV 2023
DESIGN GUIDELINES