Standard for Industrial, Commercial and Institutional Market
The CSSBI 20M Standard for Sheet Steel Cladding for Industrial, Commercial and Institutional Building Applications is intended to assist specifiers,
designers, buyers, manufacturers, and erectors of architectural sheet steel
roofing by providing information which can be adopted by reference where
desired. The requirements provided include recommended minimum requirements for
such factors as grade of steel, thickness, metallic coating designation, loading
and deflections, as well as design, fabrication and erection in general.
Currently the CSSBI does not have a standard specifically for the structural
standing seam roof panels.
Standard for Agricultural Market
The CSSBI 21M Standard for Steel Farm Roofing and Siding is intended to assist, buyers, manufacturers, and installers
of sheet steel farm roofing and siding by providing information that can be
adopted by reference where desired. The requirements provided include
recommended minimum requirements for such factors as grade of steel, thickness,
metallic coating designation, loading and deflections, as well as design,
fabrication and erection in general.
The CSSBI S8 publication Quality and Performance Specification for Prefinished Sheet Steel Used for Building Products applies to hot dipped metallic coated
sheet steel prefinished with colours of proven durability and suitable for
exterior exposure as delivered from the coil coater. Specific requirements are
included that cover the base steel, metallic coating, paint qualification
tests, exterior exposure (weathering), accelerated corrosion tests, and colour
match. This specification can be adopted by reference and sets a minimum level
of performance for prefinished sheet steel building products.
UPDATE (April 26, 2016) - Our work in the area of thermal performance done with Morrison Hershfield has been incorporated into and published in the latest edition of the Building envelope thermal bridging guide from BC Hydro.
With the introduction of updated energy codes and standards, such as the Canadian National Energy Code for Buildings (NECB 2011), provincial jurisdictions are enacting more stringent requirements on the thermal transmittance of the building envelope.
We engaged Morrison Hershfield to evaluate the thermal performance of high performance of several insulated sheet steel roof and wall assemblies. The objective of this project was to identify sheet steel wall and roof assemblies that will comply with current Canadian codes and standards related to energy efficiency and to provide guidance to viable approaches that could improve thermal performance for sheet steel assemblies.
Using 3D heat transfer modelling, the effective R- and U-values for several wall and roof sheet steel assemblies were found using common components for metal buildings. These were compared to energy requirements in NECB 2011. Material changes to these structural attachments, including steel thicknesses and thermal break placements, were also analyzed in order to determine their impact on the heat transmittance through the assemblies.
Results from this research can be found in our summary document CSSBI B20: Thermal Transmittance of Insulated Sheet Steel Wall and Roof Assemblies or click to view the entire report from Morrison Hershfield.