Structural Floor Loading Span Calculator

The sign convention used for loading is positive values shown.

Structural floor loading span calculator.

Span calculator for wood joists and rafters also available for the android os. Dead load weight of structure and fixed loads 10 lbs ft2. 2 grade of douglas fir are indicated below. Tcll 40 psf tcll 80 psf tcll 125 psf truss spacing truss spacing truss spacing.

Dead load psf span calculator for wood joists and rafters available for the iphone. The load on an outside wall with clear span trusses is exactly half the load on each wall. Geometry loading spacing bearing conditions etc. Click on the appropriate beam this will take you to the calculation table for your project.

The column on the left of each chart labeled beam span represents the beam length with bearing required for your project. Loads are considered to be either distributed or point loads. 1 psf lbf ft2 47 88 n m2. Armed with this information you can determine the minimum size span or strength of the beam credit julio.

There are two different types of loads. Floor truss span chart each individual floor truss design is unique based on multiple variables. Its either going to an exterior or an interior load. To use the beam span calculator below first select the number of floors that the floor beam will be supporting from the drop down list.

Live load is weight of furniture wind snow and more. Roof rafter framing of the residential structural design tutorial. Use span tables for progressively heavier loads until you find the limits of your floor. You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths.

Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads. Understanding loads on beams. Next use the buttons to select the supported length for the beam. The span table for a 30 psf live load 10psf dead load floor indicates a required fb value of 1 315 and a minimum e value of 1 800 000.

For sawn lumber you must perform mathematical calculations. Distributed loads are specified in units of force per unit length kn m or plf along the beam and can be applied between any two points. In other words it is either going to be on an outside wall or somewhere on the inside. Determine the beam header span length and the span carried supported by the beam header.

In this case your joists are adequate to support a 30 psf live load and 10 psf dead load. Each load can be named by the user. Maximum floor joist span for no.