Types Of Steel Roof Trusses Pdf

Alpine truss designs are engineered to meet specific span configuration and load conditions.

Types of steel roof trusses pdf.

Total load psf duration factor live load psf roof type 55 1 15 40 snow shingle 55 1 15 30 snow tile 47 30 snow 40 20 snow 1 25 20. Double slope to the upper chord of a roof supporting truss this example shows a duo pitch truss single slope upper chord for these triangular trusses part of a saw tooth roof north oriented windows simply supported smaller spans range from 10 to 15 m fink truss. Pratt trusses are basically of two types. The shapes and spans shown here represent only a fraction of the millions of designs produced by alpine engineers.

3 0 configuration of trusses 3 1 pitched roof trusses most common types of roof trusses are pitched roof trusses wherein the top chord is provided with a slope in order to facilitate natural drainage of rainwater and clearance of dust snow accumulation. Column a structural element that usually carries its primary loads in compression or tension parallel its axis. The most common and economical truss found in constructions is the pratt truss. In this type the members placed vertically are for compression whereas diagonal ones respond to the tension.

This type of truss is more commonly used for the roof of houses. This particular truss is made out of wood most of the time but it can also be built out of a combination of steel and wood. Steel roof truss design example pdf cross gabled roof. For many single storey buildings sloping roofs on trusses are common.

These trusses have a greater depth at the mid span. Column base usually a thick plate at the bottom of a column through which anchor bolts mechanically connect the column and transfer forces to the. Below are the common types of roof. This type of steel roof truss design example pdf is typically seen in structures with an extra intricate format as an example houses with an affixed garage.

4 code the code of standard practice for steel buildings and bridges as published by the american institute of steel construction. Studio two bearing points truss. Components of a steel roof truss. When a roof is to be provided for a building which does not have interior supports and the exterior walls are more than 12 m apart a roof truss will be a convenient arrangement to support the roof.

Pratt truss with secondary members.