Timber Roof Wall Plate Size

Gable roof plate top layout.

Timber roof wall plate size.

Where trussed rafter roofs are not subject to uplift a minimum of two 4 5mm x 100mm galvanized round wire nails skew nailed one on each side of the trussed rafter or truss clips fixed in accordance with the manufacturer s instructions are acceptable. Also called a wall plate raising plate or top plate an exception to the use of the term plate for a large load bearing timber in a wall is the bressummer a timber supporting a wall over a wall opening see also. A plate in timber framing is a piece of timber upon which some considerable weight is framed hence ground plate window plate obsolete etc. As the mortar does not bond the wall plate to the wall steel straps are used to ensure that the roof structure remains secure.

All bracing should be twice nailed with 3 35mm 10 gauge x 65mm long galvanized round wire nails to every trussed rafter it crosses and to the wallplate. This is to let the common rafter fit in between later. When constructing a gable roof the ceiling joists are laid out slightly differently. The picture below shows the ceiling joist starts 50mm away from the brickwork gable wall.

Wall plate is the timber wood that are placed on top of blocks or roof beams as the case may apply so for the fastest way to calculate this is to add the entire walls length and divide by 3 6m to know the numbers of pieces you need. The roof should be braced using at least 100mm x 25mm timber. These are typically 1 2 m long with a cranked end and are fixed to the wall plate at 2 m centres.