Steel Roof Beam To Span 30 Feet

In areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot.

Steel roof beam to span 30 feet.

If you could rate my answer i would appreciate it. This beam will have to support a live load floor above it. Steel should be astm a992 gr. I need to size a steel i beam for a 20 foot span in a house.

Total load psf duration factor live load psf roof type 55 1 15 40 snow shingle 55 1. I am putting a storage loft in a shop garage 30 wide by 36 feet long. The shapes and spans shown here represent only a fraction of the millions of designs produced by alpine engineers. The total load is 4 000 pounds.

It will carry a ceiling load and a partial roof load. For the initial calculation f can be estimated at 1 000. The lengths and sizes of joists vary depending on the species and quality of the lumber used. 6 12 4 12 22 22 31 26 26 36 30 30 41 32 32 44 alpine truss designs are engineered to meet specific span configuration and load conditions.

The ceiling joist span is 12 feet each side of the beam of which they be hung off of. Staggered pattern with at least a 3 x 120 nail. F stands for the beam s fiber strength in bending which depends on the species of wood. The loft will be 12 feet by 30 feet across one end of the shop.

The figures are based on quality materials. L stands for the span of the beam in feet. Wood beam calculator american wood council website rafter and joist span faq. If you add the two posts you can plan for a w4x13 it s 4 deep x 4 wide and weighs 13 pounds per foot.

Beams of more than one ply must be fastened together with either nails or bolts. For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements. The 2012 irc code calls for a minimum of a 32 o c. Fill in the parts of the formula that are already known.

We have learned from our experience to use at least a 3 1 4 x 131 groove shank nail in a column of four every foot apart down the laminate. I want work space under this loft so i am looking for a clear span wall to wall of 30 feet. The tables below give maximum spans for rafters and beams. If top flange is laterally braced by regularly spaced members generally at least every 2 feet it can be assumed to be fully braced provided bracing members are attached to the beam with fasteners that provide a positive connection.

For a single 30 beam you can plan for a w12x40 it s 12 deep x 8 wide and weighs 40 pounds per foot. 1 2 select steel beam size. 1 1 enter the steel beam span length enter the length of the steel beam.