Attic Truss Weight Capacity

The ac unit will rest on curbing which runs perpendicular to the trusses and is spaced 4 ft apart.

Attic truss weight capacity. Truss capacity is listed by pounds per square foot based on the following load rating criteria. The soffit weight approx. If you have another floor above your garage the ceiling floor structure can usually support up to 40 lbs sqft including the weight of the floor above it. With an evenly distributed live load of 30 psf which the tables show the floor is able to support the total weight on the floor would be about 3 360 pounds.

Top chord live load snow and other temporary loads top chord dead load roofing materials weight of the truss itself other permanent items attached to the roof bottom chord live load storage or living space and bottom chord dead load. Today week month all. So if your ceiling is unfinished you have some excess carrying capacity up there. Increasing the total weight on the floor to 4 480 pounds however results in a live load of 40 psf which is beyond the floor s load capacity.

Timber balcony waterproofing details. Where is the attic in summertime saga. Of stuff on it. 36 wide pull down attic stairs.

An air conditioning unit weighing 2500 lbs. Balcony grills design in philippines. 4000 00 pounds with 1 4 drywall. The truss is a framework consisting of rafters posts and struts which supports your roof.

Your allowed weight and span for a 2 x8 x12 2btr hem fir based on the info you have provided is 20 psf of dead load and 30 psf of live load with minimum bearing length of 0 68. Attic truss weight capacity. The horizontal bottom chords of most garage trusses are designed to carry the weight of drywall and insulation. To simplify you can place 20 pounds of dead load per square foot on your subfloor as long it s supported mid span.

Master flow attic fan thermostat wiring diagram. The truss are 36 in height. If you do not have another floor above the ceiling trusses may only be able to hang a maximum of 10 lbs sqft. The important point to keep in mind when you use your truss calculator is that every truss calculation is completely unique and is based on the size of your roof and its specific dimensions.

Is to be supported by 5 trusses in the roof of a restaurant. That means you could lay a 2 x 4 ft. Is a safe estimate. If the bottom chord of a roof truss functions as a floor joist such as in an attic room it carries a live load that also varies by use but a typical live floor load for a residential space is about 40 pounds per square foot.