Resist the penetration of rain at least to the extent that any water which may penetrate the roof is of insufficient intensity to run down the inside surface of the.
Roof rafter sizes south africa.
50 x 228mm rafters.
Our sabs approved timber rafters are availble in.
They have different density and strength specifications to timber locally available sizes and designs may need to be adapted to suit local sizes and conditions.
Roof trusses things to consider.
Free returns in store.
Sans 1701 2 sawn eucalyptus timber part 2.
38 x 38mm battens.
38mm x 114mm 38mm x 152mm 50mm x 152mm 38mm x 228mm 50mm x 228mm all our timber rafters are available in the following lengths.
50 x 152mm rafters.
General rules for the construction of roofs.
Softwood timber pine is usually used for roof structure construction in south africa.
And types that are not standard south african sections nor types.
The truss is a framework consisting of rafters posts and struts which supports your roof.
Sans 542 concrete roofing tiles.
I be not less than 15 nor more than 30 for class a or class c covering.
In many areas of the country roof timber must be treated with cca copper chrome.
3m 3 6m 4 2m 4 8m 5 4m 6m and 6 6m laminated beams availble on order 76mm x 228mm or made to order.
Diy building kitchen deco and garden hypermarket offering the best prices and range.
Sans 1288 preservative treated timber.
Any roof covering and waterproofing system or part thereof must.
Essential properties for a roof the south african national building regulations sans 4 2 states that.
Ii be not less than 17 nor more than 35 for class b covering.
Sa pine cca treated.
50 x 76mm purlins.
All web members shall be not less than 38mm x 114mm grade 5 timber.
Bracing of top chords of rafters for a tiled roof with a span of less than 6 6m.
C where rafter and tie beam sizes are to be determined from table4 the slope of the roof shall.
The important point to keep in mind when you use your truss calculator is that every truss calculation is completely unique and is based on the size of your roof and its specific dimensions.
