The load span tables shown below demonstrate only a tiny subset of the possible combinations available with trussteel cfs floor trusses.
Floor truss width.
The floor joist spacing is the distance between the centers of any two installed joists.
Using floor trusses allows you to utilize eight foot basement walls as the ductwork is installed within the openings of the floor truss.
Compare click to add item 18 x 8 trimmable end floor truss to the compare list.
Select store buy.
Openings are to be located in the center of the span max opening width is 24 inches 7.
05425 cold formed steel trusses floor truss spans every trussteel floor truss is a custom design based upon the unique load span bearing use and code criteria of a particular project.
Tcll top chord floor live load 2.
Floors 18 encyclopedia of trusses maximum duct dimensions are based on a truss plate width of 4 inches.
Live load is weight of furniture wind snow and more.
Top and bottom chords braced by structural sheathing 6.
Click to add item 18 x 8 trimmable end floor truss to the compare list.
Measure the width of the floor and add about an extra quarter inch.
Add to list click to add item 18 x 8 trimmable end floor truss to your list.
One of the biggest advantages of floor trusses is that they can span further than conventional framing i e.
The truss sides will be equal in length and width to fit equally on the shed walls.
Additionally having the mechanicals and ductwork hidden within the web openings of the floor truss allows for the easy installation of drywall to the bottom chord of the floor truss to finish off a ceiling.
Ship to store free.
Floor trusses floor spans.
2 grade of douglas fir are indicated below.
1 psf lb f ft 2 47 88 n m 2.
Tcdl 10 psf and bcdl 5 psf 3.
Below is a chart that we use for quick reference to match floor truss height and spacing with any given span.
The gable shed has a roof like a house so the roof trusses will have a peak in the middle.
And parallel to floor truss span strongback lateral supports 24 max.
Dead load weight of structure and fixed loads 10 lbs ft 2.
Chase sizes are maximum possible for centered openings.
Larger plate widths cause a reduction in duct sizes.
Roof floor truss manual 7 31 08 10 43 am page 12.
2x10 s or 2x12 s or i joists.
1 ft 0 3048 m.
72 5 0 mi ni m u m girder floor truss floor truss jacks a a bearing wall girder floor truss floor truss jacks bearing wall cantilevered floor truss two 2x rim joists 24 max.
See the image below for an example of joists spaced 16 on center 16 o c.
Then cut that 2 4 for the bottom chord at that length.
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.
May duct openings for fan style floor trusses with 4x2 or 3x2 chords webs all dimensions in inches depth.
