The steels or rsj s rolled steel joists are often built into one or both walls to give added stability to the roof structure.
Garage flat roof joist construction.
The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls.
A flat roof garage built with joists span the gap between two walls.
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Flat roofing under construction plywood decking is then used to cover the joists with the width in between also determined by the weight being placed upon them.
On a basic level flat roof construction comes in the form of roofing timbers or joists as they are more commonly known or steels that are laid across two uprights walls in most cases.
A timber decking is then constructed and its weight supported by the joists.
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Flat roofing is a popular choice for garages homes garages extensions and many other types of buildings.
The roofs have a timber frame as the supporting structure.
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They provide additional firmness needed to withstand the pull of the garage doors over time as they open and close.
This will give additional stability to the roof structure.
For additional stability you can also use steel joists that are built into one or both of the walls.