Is It Okay To Use 6x2 In Roof Struts

Hi there 5x2 graded timber for rafters and ceiling joist as 6x2 is only used in loadbearing situations and would be cheaper than 6x2.

Is it okay to use 6x2 in roof struts.

No need for purlins it would be a steel beam you would need to use but that is not necessery as it is only a lean to roof. Roof decking is often also used as a diaphragm to transfer wind or seismic loads to the lateral bracing system below. Rafters run from the peak of the roof. The live loads a truss is required to bear are determined by local building codes.

Tie to roof rafters at peak tie to ceiling joists roof rafters to ceiling joists at the eaves. The decking is sized to resist the bending caused by these loads. The purlins are supported by vertical or slightly angled bracing. Load tables specifying safe loads for different spans are available from metal deck manufacturers.

Roofs are framed with rafters or trusses which are rafters joined by internal braces so they install as a single component. Other relevant factors include the type of wood being used for the rafters the size of the rafters and the load that the rafters need to support. The ceiling joists create a truss to begin with i m suggesting adding another member to the truss. The spacing between rafters in a given building is part of the engineering calculations that determine the required structure of the roof.

Purlins are placed under rafters in a perpendicular position on edge not flat. Answered 23rd feb 2011. If the bottom chord of a roof truss functions as a floor joist such as in an attic room it carries a live load that also varies by. The typical live load placed on a structure s roof varies by the building s use and location and weather is the primary concern.