How Wide Are Roof Truss Cords

These steel joints are needed to support the overall truss.

How wide are roof truss cords.

Red w truss ton chord bearing lateral no notch clip 77kb dwg download dwg. 76 3 wide chords or cap plates on double cord trusses. The run or the base number is 12 inches. The roof system is basically a hinge now.

97kb dwg download dwg. 500 sycamore street p o. 115kb pdf download pdf. Trusses also include reinforcing members between the top and bottom chords to add strength to the truss.

For example a slope of 6 12 means for every 12 inches of horizontal distance the slope of the roof will rise 6 inches vertically. 62 red h truss with wall tie. 75 red m and red h trusses. 117kb pdf download pdf.

Those trusses were engineered with a heavy critical dependency on the bottom chords which are in tension. Flat the most economical flat truss for a roof is provided when the depth of the truss in inches is approximately equal to 7 of the span in inches. The rise will be the elevation change over the 12 inches. Most economical when the difference in slope between the top and bottom chords is at least 3 12 or the bottom chord pitch is no more than half the top chord pitch.

The same thing is true for the bridge of the truss. One goal of truss design is to build a roof structure that is as strong as necessary but that uses the minimum amount of lumber. Box 177 la crescent mn 55947 507 895 8400. The more complex the truss framework is the greater quantity of these joints will be required.

Although the standard spacing of roof trusses may be the same as that of rafters with 24 inch spacing being a. Removal has left them extremely vulnerable to collapse due to spreading especially under snow loads but also under just the load of the roof itself. Keep in mind that the higher the pitch the steeper the roof.