Sheet roofing tiled roofing roof load width rlw mm 1500 2100 4500 7500 1500 2100 4500 7500.
Skillion roof truss span.
Pitches above 9 12 are very highly angled and are designated steep slope roofs.
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.
Pitches of less than 2 12 are considered flat roofs even though they may be very slightly angled.
Pitches lower than 4 12 have a slight angle and they are defined as low slope roofs.
To achieve maximum indicated spans trusses may require six or more panels.
As a result the truss chords top take extra bending from the purlin loads.
Trusses with an asterisk that exceed 14 in height may be shipped in two pieces.
The most commonly used roof pitches fall in a range between 4 12 and 9 12.
Skillion roof rafter detail diagram with all dimensions and birds mouths scale.
Live load overhang kpa.
1 in 25 4 mm.
Also available for the android os.
The imposed uniformly distributed live load in the main span.
Loads are calculated in accordance with table 3 1 of as nzs 1170 1 2002.
Contact your localalpine trussmanufacturerorofficeformoreinformation.
Select output fraction precision decimal inch or metric mm.
The span should not be confused with the overall width of the truss which includes the overhangs.
Mono used where the roof is required to.
Trusses it is common to space them in the order of 3 to 6 metres apart to distinguish them as individual features.
Live load is weight of furniture wind snow and more.
1 psf lbf ft2 47 88 n m2.
Dead load weight of structure and fixed loads 15 lbs ft2.
Span calculator for wood joists and rafters also available for the android os.
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.
To make this possible purlins are used to span between trusses for the purpose of supporting in fill rafters i e.
1 ft 0 3048 m.
Bt b tc 6 6 common truss configurations for the most widely designed roof shapes.
Select and re calculate to display.
