Ceiling Beam Size Calculator

Rafter and ceiling joist forces.

Ceiling beam size calculator. Simple beam point load at any location. Uniformly loaded beam overhanging post calculator. Aitc capacity tables provide the uniformly distributed load that a glued laminated timber beam can support based on beam size span and material properties. Size selection tables headers beams.

Combined axial and bending load calculator. Table specifications are provided with each table indicating conditions and assumptions used to calculate the loads. Steel i beam. Also remember you can add results from beams together using the method of superposition.

Use it to help you design steel wood and concrete beams under various loading conditions. Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads. Aitc beam capacity tables. Pick the span you want pick 4 0 for example select the fb column of the lumber you intend to use in af pa design values for joists and rafters 2 hem fir fb 1104 psi e 1 300 000 psi so use span table column fb 1100.

The beam calculator is a great tool to quickly validate forces in beams. You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. Simple beam point load at midspan. Choose the row for the size of lumber used in the double header.

Live load 30 psf dead load 14 psf dead load manually increased for roof slope total load 44 psf span is 16 0 to center of posts supporting ridge beam. Use 2 6 in this example. Two point loads at one third points on a simple beam. This calculator matches up with 90 of the applications in the 2012 international residential code book.

It has been my experience to never use a beam smaller than a two ply 2 x 8. Allowable load tables tables providing size selections for various beam spans and loading combinations for southern pine dimension lumber and southern pine glued laminated timber are available for the following applications. While every effort has been made to insure the accuracy of the information presented and special effort has been made to assure that the information reflects the state of the art neither the west coast lumber inspection bureau the american wood council nor its members assume any responsibility for any particular design prepared from this online span calculator. If there is are any questions about anything else then you should contact your supplier or an engineer.

Duration of load is 1 15 snow tributary length 12 0 exclude outer 6 ft of rafters which bear on outside walls the ridge beam. Calculate the reactions at the supports of a beam automatically plot the bending moment shear force and axial force diagrams. We updated the beam calculator interface and added additional features for calculating beams calculation of statically indeterminate beams. These tables are provided as a guideline.

Most interior beams need to include the roof load.