Standard Roof Truss Widths

If the overhang is more than around 2 6 it will require a 2 6 top cord for the tail section to handle that amount.

Standard roof truss widths.

A truss with the same pitch and heel on both sides and a peak at the center is called a common truss. Roof truss span tables. Easily attached to the rest of the building s frame they circumvent the complicated expensive nature of from scratch roof framing and can be purchased in a wide variety of designs made from either lumber commonly used for homes or metal primarily used for commercial. Top chord 2x4 2x6 2x6 2x4 2x6 2x6 2x4 2x6 2x6 2x4 2x6 2x6 bottom chord 2x4 2x4 2x6 2x4 2x4 2x6 2x4 2x4 2x6 2x4 2x4 2x6 2 12 24 24 33 27 27 37 31 31 43 33 33 46 2 5 12 29 29 39 33 33 45 37 38 52 39 40 55 3 12 34 34 46 37 39 53 40 44 60 43 46 64 3 5 12 39 39 53 41 44 61 44 50 65 47 52 70 4 12 41 43 59 43 49 64 46 56 69 49 57 74 5 12 44 52 67 46 58 69 49 66 74 53 66 80 6 12 46 60 69 47 67 71 51 74 76 55 74 82 7 12 47 67 70 48.

Standard framing details for use in preliminary design. Most are spaced between 18 26 inches apart. It will use the current cost of wooden rafters based on the average price found at home improvement stores. Included are a series of representative roof truss span tables that will give you an idea of the truss spans available for a particular load condition load duration lumber type and truss configuration.

The standard roof truss spacing is 2. Member size grade tc 1 4 4 7 97 tr26 bc 6 10 72 tr26 bc 10 2 72 tr26 wb 3 8 5 9 72 tr26 wb 4 8 4 9 72 tr26. 600 timber thickness mm. There is a misconception that spacing trusses every 16 on center is better because it will be strong than the average 2.

You can use sbca s span charts to roughly determine truss sizes available. To determine how many trusses to create you will first need to measure both the width and the length of the structure you are building. All truss images are for visual aid only and may not truly represent the roof truss supplied or designed by your chosen supplier. About 1 of these are truss display.

The average overhang for trusses used for housing or related buildings with a finished soffit is between 1 4 to 2. Girder trusses are designed to carry additional loads other than standard roof loads. While this can be true it is not always accurate unless in some high stress situations. A wide variety of standard roof truss sizes options are available to you such as standard processing service and application.

Common or standard trusses are symmetrical and have standard four inch heels. Almost all residential trusses use this spacing. This length can easily be changed to fit the need of the truss.