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.
Ceiling beam size calculator.
Simple beam point load at midspan.
Most interior beams need to include the roof load.
Choose the row for the size of lumber used in the double header.
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.
It has been my experience to never use a beam smaller than a two ply 2 x 8.
We updated the beam calculator interface and added additional features for calculating beams calculation of statically indeterminate beams.
Aitc capacity tables provide the uniformly distributed load that a glued laminated timber beam can support based on beam size span and material properties.
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.
Steel i beam.
Also remember you can add results from beams together using the method of superposition.
Rafter and ceiling joist forces.
This calculator matches up with 90 of the applications in the 2012 international residential code book.
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.
Headers beams.
Use it to help you design steel wood and concrete beams under various loading conditions.
These tables are provided as a guideline.
Combined axial and bending load calculator.
You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths.
Determine the total load per foot of beam.
If there is are any questions about anything else then you should contact your supplier or an engineer.
Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads.
Table specifications are provided with each table indicating conditions and assumptions used to calculate the loads.
Two point loads at one third points on a simple beam.
Uniformly loaded beam overhanging post calculator.
Use 2 6 in this example.
Simple beam point load at any location.
Size selection tables headers beams.
The beam calculator is a great tool to quickly validate forces in beams.
Aitc beam capacity tables.
