A single steel beam can easily span 30 feet.
How to size steel beam for roof load.
The roof load is composed of a dead load and a live load.
910 pounds per lineal foot.
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.
It has been my experience to never use a beam smaller than a two ply 2 x 8.
The length of the steel beam.
The size of the steel beam you will require will depend primarily on two factors.
Yield strength of steel ksi e g.
Select the steel beam size from the dropdown list.
15 psf x 14ft 210 pounds per lineal foot.
Measure the distance in inches that you need the steel beam to fill.
Enter the length of the steel beam.
The weight that the steel beam is required to support.
Determine the load per square foot that the roof must support.
How to size a beam to hold a porch roof.
Uniformly loaded simple beam steel i beams.
Alternatively design in a specific timber or steel material type.
To do a rough estimate get a copy of the architect s studio companion which is a compendium of useful rules of thumb.
No matter what the specs say.
1 1 enter the steel beam span length.
The dead load is.
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.
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.
Write this figure down on a sheet of paper as your clear span for the beam.
The additional dead load depends.
50 psf x 14ft 700 pounds per lineal foot.
Multiply the load per square foot by the total area of the roof.
This calculator matches up with 90 of the applications in the 2012 international residential code book.
If an example roof is 10 feet by 20.
You have a choice of w beams s beams or american standard channels.
1 2 select steel beam size.
