Safe roof purlins spans.
Roof purlin for 10 span.
Engineered purlin metal mart offers a complete line of engineered purlin material.
We manufacture any component from 1 2 steel subgirts to 12 section up to 10 gauge.
All spans to have 1 row of bridging.
In areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot.
Contact flexospan for information on custom purlin and girt structural steel dimensions.
Maximum rafter spans for a patio roof.
The safe spans below are suitable for sheds and class 1 structures with the following assumptions.
1 psf lb f ft 2 47 88 n m 2.
Cpe 0 9 and cpi 0 2.
Douglas fir maximum horizontal roof rafter span for lumber grade selected structural and no.
Steel z purlins and z girts are also available with other depths and flange widths.
02 6554 6422 email.
Purlin is a well known material in the field of architecture structural building or structural engineering.
Lap lengths of less than 10 or 5 on any side of a support may not provide full structural continuity and may also suffer from local failures not considered by this method.
The cos of the purlin spacing is because the load on the purlins is vertical and the purlin spacing is with the run of the roof.
For heavy roofs or in.
Reduced end spans each purlin should have 7 5 of each adjacent span added rather than 7 5 of that purlin s span.
Dead load will be the actual weight of the roof steel and the roof purlins.
Available in cee or zee shape red oxide primed or galvanized 16 14 or 12 gauge sizes from 4 up to 12 flange widths of 1 1 2 up to 4 cut to your specified lengths hole punching available load tables available for all material.
Steel roof purlins and wall girts are produced and available in house.
Live load is weight of furniture wind snow and more.
Dead load weight of structure and fixed loads 15 lbs ft 2.
29 norfolk close tuncurry nsw 2428 phone.
An essential part of planning a patio roof or gazebo project is determining the number size and spacing of rafters beams and posts according to the loads they will carry.
It is a horizontal bar that used to support building at the roof structurally.
Cleated or bracketed fixing only no flange bolting.
1 ft 0 3048 m.
Max roof span allowed 12m.
Where span lengths are unequal e g.
There is an available purlin for every type of roofing material including purlin span for metal roof which is the most common material type to use this item.