Structural insulated panels (SIPs): structural principles and design
Structural insulated panels (SIPs) are composite engineered products consisting of two high density facings, typically orientated strand board (OSB), which are bonded on both sides of a low density, cellular foam core. These prefabricated, high performance, lightweight building panels can be used in walls and roofs for residential and commercial buildings.
SIPs offer a good thermal and airtightness performance for structural applications where minimal thermal bridging is required. They are manufactured under closely controlled factory conditions and can be custom designed for each application. The result is a building system that is extremely strong, energy efficient and cost effective.
This Wood Information Sheet includes TRADA's advice on:
- structural and general erection principles
- fire performance - design and construction
- building modification, extension and repurposing.
This Wood Information Sheet gives guidance on assessing the suitability of existing doors for upgrading to give a 20 or 30 minutes' fire resistance comparable with that of purpose-made fire doors. Upgrading to 60 minutes' performance will rarely be possible.
Upgrading the fire resistance of existing doors is a...
The National Structural Timber Specification for Building Construction (NSTS) is an ambitious initiative by TRADA to support the rapidly increasing use of timber. It aims to be the definitive, comprehensive, stand-alone national specification for structural timber, complementing the existing national specifications that are widely used for steel and concrete buildings....
Connections are an essential part of any structure, and in timber structures they are often the most critical part of a design. The timber section size is often determined by the strength of the section remaining after drilling holes for bolts or dowels, or by the spacing requirements for the...