Roof Truss Weight Capacity

Dead load weight of roof trusses top chord bottom chord webs weight per lineal foot plf 2x4 2x4 2x4 4 3 2x4 2x8 2x4 5 6 2x6 2x4 2x4 4 8 2x6 2x6 2x4 5 5 2x6 2x6 2x6 6 2 2x6 2x8 2x4 5 9 2x6 2x10 2x4 6 6 2x6 2x10 2x6 7 2 2x8 2x8 2x4 6 6 2x8 2x8 2x6 7 2 2x8 2x10 2x8 8 4 dead load weight of floor trusses depth in inches top chord bottom chord.

Roof truss weight capacity.

Roof truss span tables alpine engineered products 15 top chord 2x4 2x6 2x6 2x4 2x6 2x6 2x4 2x6 2x6 2x4 2x6 2x6 bottom chord 2x4 2x4 2x6 2x4 2x4 2x6 2x4 2x4 2x6 2x4 2x4 2x6 2 12 24 24 33 27 27 37 31 31 43 33 33 46 2 5 12 29 29 39 33 33 45 37 38 52 39 40 55 3 12 34 34 46 37 39 53 40 44 60 43 46 64. Calculating the load on a flat roof is a challenging task for the layperson that involves knowledge of building materials their weights and local building codes. A typical load is 5 and 10 pounds per square foot. The standard guide in the u s the asce 7 05 lists weights and stresses for all building materials expressed in pounds per square foot.

Trusses struts and props. If the total weight exceeds the load limit of the truss then the truss is compromised. 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. Be careful and your roof system will perform admirably for generations.

A roof truss is a triangular wood structure that is engineered to hold up much of the weight of the rest of the roof. 24 truss 120 150 30 160 200 36 220 300 40 270 350 50 375 500 60 450 600 70 600 800 80 800 1000. How much weight your roof can hold before it caves in is a totally different question. The straight lengths of wood known as members that roof trusses built with are connected with intersections that distribute the weight evenly down the length of each member.

Make sure items are spaced so that the weight is evenly distributed over the chords. When in doubt go light on the weight you re storing up there. The entire roof load is supported by load bearing walls which in turn transfer weight to the foundations of your home. Regardless of truss span or truss weight use common sense when lifting the trusses into place.

My truss weight table per single truss. All weight hanging from the truss has to be added to the existing dead load. Don t look at their advertised weight capacity and think that your ceiling can automatically hold that. The truss is a framework consisting of rafters posts and struts which supports your roof.