How To Size Steel Beam For Roof Load

It even may be less expensive than replacing the wood with wood.

How to size steel beam for roof load. The length of the steel beam. The roof load is composed of a dead load and a live load. Select the steel beam size from the dropdown list. Multiply the load per square foot by the total area of the roof.

The weight that the steel beam is required to support. Uniformly loaded simple beam steel i beams. Determine the load per square foot that the roof must support. The size of the steel beam you will require will depend primarily on two factors.

50 psf x 14ft 700 pounds per lineal foot. You have a choice of w beams s beams or american standard channels. 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. Span of beam inches tributary width inches uniform load pounds square foot e g.

1 2 select steel beam size. It is important to list live load dead load and total load separately because live load is used to compute stiffness and total load is used to calculate strength. Individual timbers are relatively inexpensive but steel is so much stronger that you need much less of it. If an example roof is 10 feet by 20.

Pick list all suitable timber and steel sections to design across all timber and steel sections. It has been my experience to never use a beam smaller than a two ply 2 x 8. How to size a beam to hold a porch roof. Enter the length of the steel beam.

To do a rough estimate get a copy of the architect s studio companion which is a compendium of useful rules of thumb. If there is are any questions about anything else then you should contact your supplier or an engineer. Most interior beams need to include the roof load. No matter what the specs say.

The additional dead load depends. Write this figure down on a sheet of paper as your clear span for the beam. Measure the distance in inches that you need the steel beam to fill. Alternatively design in a specific timber or steel material type.

1 1 enter the steel beam span length. Yield strength of steel ksi e g. This calculator matches up with 90 of the applications in the 2012 international residential code book. A single steel beam can easily span 30 feet.