How To Size Steel Beam For Roof Load

This calculator matches up with 90 of the applications in the 2012 international residential code book.

How to size steel beam for roof load.

Distance from roof beam to next roof support i e the span of the rafter or roof truss from the roof beam to the next adjacent beam or wall. 50 psf x 14ft 700 pounds per lineal foot. You have a choice of w beams s beams or american standard channels. 15 psf x 14ft 210 pounds per lineal foot.

Determine the load per square foot that the roof must support. Yield strength of steel ksi e g. Enter the length of the steel beam. Individual timbers are relatively inexpensive but steel is so much stronger that you need much less of it.

It even may be less expensive than replacing the wood with wood. Measure the distance in inches that you need the steel beam to fill. How to size a beam to hold a porch roof. A single steel beam can easily span 30 feet.

1 2 select steel beam size. Multiply the load per square foot by the total area of the roof. If there is are any questions about anything else then you should contact your supplier or an engineer. Alternatively design in a specific timber or steel material type.

The roof load is composed of a dead load and a live load. No matter what the specs say. The weight that the steel beam is required to support. The additional dead load depends.

1 1 enter the steel beam span length. The size of the steel beam you will require will depend primarily on two factors. The dead load is. Span of beam inches tributary width inches uniform load pounds square foot e g.

Uniformly loaded simple beam steel i beams. 910 pounds per lineal foot. Pick list all suitable timber and steel sections to design across all timber and steel sections. The length of the steel beam.

If an example roof is 10 feet by 20. Select the steel beam size from the dropdown list. It has been my experience to never use a beam smaller than a two ply 2 x 8. To do a rough estimate get a copy of the architect s studio companion which is a compendium of useful rules of thumb.