Structural Residential Roof Truss Design

Typically the building designer or builder will contract with the truss fabricator who will supply a truss layout and a structural design of each significant element of the roof system.

Structural residential roof truss design.

Attic truss roof design is intended to provide a solution for additional living area within the roof space. It s often used for sheds garages or extension of an existing roof. The truss plate manufacturer s engineer usually reviews and seals the individual truss designs on behalf of the truss fabricator. Trusses have several key components.

This is crucial for truss design because otherwise the trusses may not be built to handle the appropriate load. A truss is a prefabricated wooden structure that integrates a triangular webbing of structural members to provide support for the roof above while tying the outside walls of the house together. Shop roof trusses spacer floor truss. Roof rafters trusses and beams.

This article will focus on timber roof truss design in residential construction. Overview building design truss design retaining wall design tall wall design requests. A mono truss roof allows for more sunlight and visual space proper drainage and relatively cheaper. The chords are located at the top and bottom of the truss.

Residential structural design guide 3 3. The attic truss is able to support more load than a standard truss of the same span and pitch. A mono truss is a one sloped truss that forms a right angle triangle. Photo gallery video gallery residential steel trim selector post frame trim selector projects.

Chapter 3 design loads for residential buildings typical load combinations used for the design of table 3 1. In this type of truss roof a high collar beam and two struts make a wide and open expanded area which forms a wide livable space. Chord members web members and connections. Structural model of truss truss girder self wt 4 05 k 4 05 k 80 ft x 25 ft 2 03 psf 18 03 psf bar joist wt 9 plf pd int dead load at an interior panel point 18 025 psf x 25 ft x10 ft 4 51 k due roof ceiling wt truss girder 9 plf x 25 ft 0 225 k due purlin wt 4 73 k pd.

Typical residential loading covers standard decking and shingles metal along with the sheetrock on the ceiling.