Steel Joist Size Calculator

Calculators for structural engineers construction professionals and steel building specifiers.

Steel joist size calculator. Select the on center spacing for the joists. Open web steel joists using steel joist institute sji standard load tables. Species southern pine douglas fir larch hem fir spruce pine fir redwood western cedars ponderosa pine red pine. Spacing in exterior exposure.

Steel deck uniform load determine the uniform gravity and wind uplift load for steel deck based on strength deflection and attachment to supporting members. Live load psf dead load psf span calculator for wood joists and rafters. Online calculator for performing steel joist analysis. These spans were calculated using our floor joist calculation engine.

In joist size designations the digit s to the left of k represent the total joist depth while the digit s to the right of k represent the section number 1 through 12. The highest is a fully loaded floor 70 pounds per square foot. Looking at this table you will see there is a choice in the size of floor joist 2 x 6 2 x 8 2 x 10 or 2 x 12 and there is a choice in the joist spacing 12 16 or 14. The floor joist spacing is the distance between the centers of any two installed joists.

The lowest is a plain ceiling joist with no storage 10 pounds per square foot. Span calculator for wood joists and rafters available for the iphone. For steel joists considered as simple span beams subjected to non standard loads. This span table is to the format and methodology given in bs 5268 7 1.

There are six choices. Calculate your unfilled deck diaphragm shear and stiffness for your exact condition based on the american iron and steel institute aisi s310 16. See the image below for an example of joists spaced 16 on center 16 o c. Find the column for your dead load and spacing and the row for your timber size to find the permissible clear span in metres.

You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. Use a calculator to multiply the clear span by the length of the floor joist by the vertical load. Click on a span to generate a full calculation you can adjust the exact span. Use the joist span and spacing calculator below to plug in your desired type of wood the size of your joists and the required spacing between each joist.

K series joist stress and deflection analysis calculator and equations. This is how far apart they will be.