Roof Truss Wall Plate Detail

Plenum typically the use of the entire floor truss cavity formed by the floor above and the ceiling below as a supply or return air duct.

Roof truss wall plate detail. Metal plate connected wood trusses hib 91 by permission of truss plate institute inc. 4 storage trusses should be stored in a stable position to prevent toppling and or shifting. End walls may be truss framed with field assembled stud infill prefabricated in. Toenail a truss into the top of the wall plate by nailing through the sides of the bottom chord at a 30 degree angle.

I joist construction details performance rated i joists in floor and roof framing truss. The wide variety of possible roof and floor truss designs and combinations is illustrated by figure 1. A truss frame consists of a roof truss and a floor truss joined by exterior wall studs. Wall plates should generally be in lengths of not less than 3m but shorter lengths should extend over at least 3 joists rafters or trusses.

However anchor bolt spacing must be reduced 24 in. Plate a horizontal wood framing member typically the top and bottom 2x4 members of a stud wall and the 2x6 sill plate bolted to a concrete wall for floor structural attachment. To fix the joists and rafters down on to the wall plates they should be toe or skew nailed to the top plate like below. Joist attachment per detail 1b load bearing wall above shall align vertically with the wall below.

As with rafter style roofs toenailing is one of the most common ways of attaching a truss style roof to a wall plate. 1k 2x plate flush with inside face of wall or beam. Wall plates and the roof structure shall be bedded and fixed to distribute and transmit loads and to prevent uplift. Wall plates should be joined using half lapped joints at corners and in running lengths.

Engineered roof trusses wi overhang roof apron gutter downspout system cont 2x8 rough fascia. If trusses are stored horizontally the blocking should be eight to ten foot centers to prevent lateral bending. Trussed rafter roofs and traditional cut roofs should be supported on timber wall plates. If the truss bundle is to be stored for more.

As an alternate to the roof truss anchor a bolted top plate may be used for the roof to wall connection see figure 5.