Floor Load Width Diagram

Where the bearer supports load bearing walls the type of roof covering also needs to be determined.

Floor load width diagram. Roof load width rlw and floor load width flw can be determined from as1684 or from the images below. This results in the load diagram given in figure ta 2 14. Area 0 5 sqrt l 1 2 l 2 2 w c. The bearer span non loadbearing single or continuous is determined from the floor load width flw which for an external bearer will be half the joist span.

An inaccessible attic space on the other hand might have a live load of only 20 psf. Live load is weight of furniture wind snow and more. These diagrams may also be used to determine roof load width for floor joists. For an internal bearer which i assume you aren t after it is the half span load in both directions.

Dead load weight of structure and fixed loads 10 lbs ft 2. Depending on the floor live load you will need 2 x 240x45. First floor live loads have higher requirements than second floor live loads 40 pounds per square foot vs. Determination of roof load width.

2 grade of douglas fir are indicated below. Maximum floor joist span for no. To calculate your bearer size accurately flw needs to be taken into account as well as the live load of thr floor. Figure ta 2 14 load diagram for girder bc.

Alternately you can find w c by recognizing that the load on the girder has a triangular distribution and then set up the expression that equates the tributary load to the shape of the load diagram. Flw is used to calculate the sectional size of. Supporting load bearing walls and lintels in lower storey load bearing walls. 8th sep 2011 03 37 pm.

This video looks at floor load width flw. This is referred to as the floor load width flw. 1 psf lb f ft 2 47 88 n m 2. 1 ft 0 3048 m.

This is the fourth video in the series on the timber framing code. Refer to figure 3 4 4 1 table a of the building code of australia. Tile roofs impart a heavier dead load on the bearers than sheet roofs.