Skillion Roof Truss Span

Loads are calculated in accordance with table 3 1 of as nzs 1170 1 2002.

Skillion roof truss span.

The span should not be confused with the overall width of the truss which includes the overhangs. Select output fraction precision decimal inch or metric mm. As a result the truss chords top take extra bending from the purlin loads. The span of a truss refers to the length of the bottom chord covering the width of the room or structure that the truss is covering.

Skillion lean to roof profile diagram quest. 1 psf lbf ft2 47 88 n m2. Dead load weight of structure and fixed loads 15 lbs ft2. The most commonly used roof pitches fall in a range between 4 12 and 9 12.

Pitches above 9 12 are very highly angled and are designated steep slope roofs. Mono used where the roof is required to. Contact your localalpine trussmanufacturerorofficeformoreinformation. This is set by the roof use you selected in the previous screen and cannot be modified.

Maximum span of bearer mm upper floor load width 1800mm single span. Span calculator for wood joists and rafters also available for the android os. To make this possible purlins are used to span between trusses for the purpose of supporting in fill rafters i e. Trusses with an asterisk that exceed 14 in height may be shipped in two pieces.

Trusses it is common to space them in the order of 3 to 6 metres apart to distinguish them as individual features. 1 ft 0 3048 m. Pitches lower than 4 12 have a slight angle and they are defined as low slope roofs. Skillion roof rafter detail diagram with all dimensions and birds mouths scale.

To achieve maximum indicated spans trusses may require six or more panels. Bt b tc 6 6 common truss configurations for the most widely designed roof shapes. Live load overhang kpa. Live load is weight of furniture wind snow and more.

Live load 20 lbs ft2 956 n m2 maximum span ft in nominal size. Sheet roofing tiled roofing roof load width rlw mm 1500 2100 4500 7500 1500 2100 4500 7500. Pitches of less than 2 12 are considered flat roofs even though they may be very slightly angled. Trussed roof bearer conventional roof coupled unstrutted ridge support bearer lw support conventional roof coupled strutted ridge support bearer support support x y z bearer a bearer b bearer c floor joists continuous span beam span l1 2 single span beam span bearer floor load width flw a b c flw x y 2 flw.

Select and re calculate to display.