1 2 select steel beam size.
How to size steel beam for roof load.
This calculator matches up with 90 of the applications in the 2012 international residential code book.
Most interior beams need to include the roof load.
Alternatively design in a specific timber or steel material type.
The roof load is composed of a dead load and a live load.
Determine the load per square foot that the roof must support.
Uniformly loaded simple beam steel i beams.
If there is are any questions about anything else then you should contact your supplier or an engineer.
The weight that the steel beam is required to support.
The length of the steel beam.
The dead load is.
Measure the distance in inches that you need the steel beam to fill.
Individual timbers are relatively inexpensive but steel is so much stronger that you need much less of it.
It has been my experience to never use a beam smaller than a two ply 2 x 8.
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.
You have a choice of w beams s beams or american standard channels.
50 psf x 14ft 700 pounds per lineal foot.
It even may be less expensive than replacing the wood with wood.
The size of the steel beam you will require will depend primarily on two factors.
No matter what the specs say.
Yield strength of steel ksi e g.
Pick list all suitable timber and steel sections to design across all timber and steel sections.
Multiply the load per square foot by the total area of the roof.
Span of beam inches tributary width inches uniform load pounds square foot e g.
A single steel beam can easily span 30 feet.
To do a rough estimate get a copy of the architect s studio companion which is a compendium of useful rules of thumb.
Write this figure down on a sheet of paper as your clear span for the beam.
If an example roof is 10 feet by 20.
Enter the length of the steel beam.
How to size a beam to hold a porch roof.
15 psf x 14ft 210 pounds per lineal foot.
1 1 enter the steel beam span length.
