Roof Purlin Design Spreadsheet

The design of a puriin system known as multibeam mark 2 based on a cold formed steel sigma profile.

Roof purlin design spreadsheet.

Get a spreadsheet steel purlins girts www. The designis based on the maximum yeild strength mn fysx as stated in the aisc manual 13th ed. Oct 31 lawrence bulanadi molina. A common arrangement is a rafter and purlin system which combines purlins and rafters.

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. 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 design structural steel. 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.

This is a conservative approach as it provides for a large moment than that obtained by true engineering analysis. Visit our site now. Design of purlin sizes is based on an analysis of bending members as a simple beam. All spreadsheets that you can download are fully functional.

The alternative approaches to design were reviewed and a semi empirical design procedure was described which resulted in safe but competitive load span tables. Design of c purlins spreadsheet by admin 0. This spreadsheet is to be used to check the adequacy of roof purlins for a specified combination of loads.