Roof Purlin Design Spreadsheet

The length of the purlin from truss to the truss is taken as the span length needed for the single span simply supported beam formula.

Roof purlin design spreadsheet.

This collection includes following spreadsheets under following categories geotechnical design structural r f concrete structural steel design detailing bridge design timber design structural dynamics wind load calculation and hydraulics and. A common arrangement is a rafter and purlin system which combines purlins and rafters. This is a conservative approach as it provides for a large moment than that obtained by true engineering analysis. The design of a puriin system known as multibeam mark 2 based on a cold formed steel sigma profile.

Oct 31 lawrence bulanadi molina. Kb pls check tabs at the flag for inappropriate may 10 this spreadsheet is to be used to check the adequacy of roof purlins for a specified combination of loads. The roof support system is a ridgepole and either rafters which run perpendicular from the top of the walls to the ridge or purlins which run parallel to the ridge. Design of purlin sizes is based on an analysis of bending members as a simple beam.

The designis based on the maximum yeild strength mn fysx as stated in the aisc manual 13th ed. The alternative approaches to design were reviewed and a semi empirical design procedure was described which resulted in safe but competitive load span tables. Get a spreadsheet steel purlins girts www. All spreadsheets that you can download are fully functional.

This spread sheet can only be used for load combinations with two variables. Roof design structural steel. Design of c purlins spreadsheet by admin 0.