Roof Truss Top Chord

Use our top chord truss calculator to estimate your rake length for roof sheathing.

Roof truss top chord.

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. Flat truss a truss which has the top chord parallel to the bottom chord over the entire length of the truss. 500 sycamore street p o. Truss a pre built structural member capable of supporting a load over a given span.

In historic carpentry the top chords are often called rafters and the bottom chord is often referred to as a tie beam. Pitch 12 span ft in overhang ft in rounded to the nearest 1 32. Pitched truss any truss in which the top chord is sloped and the bottom chord is horizontal. There are two main types of timber roof trusses.

Top chord an inclined or horizontal member that establishes the upper edge of a truss usually carrying compression and bearing stress. Box 177 la crescent mn 55947 507 895 8400. Overhang the extension of the top chord of a truss beyond the bottom chord measured horizontally b. 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.