Roof Load Width Pergola
If you can source a beam of 6 5 mtrs long in one piece the size required would be 240 by 45 in f5 or f7 or mgp 10.
Roof load width pergola. Geoff a builder friend once said that for a smaller sized pergola with 4 x 2 rafters the pergola beam span should be no bigger than the width of a standard fence panel or 6ft. Patio roof maximum beam rafter spans beamsmeasuring pergola dimensions learn the standardwhat is max distance between posts using 2x12x20 foot beams for apergola beam span calculator. The clear pergola roof still blocks some of the sun about 10 so the patio still feels cooler than the non covered area. I seriously cannot wait for a rain storm so we can sit under the roof and watch the rain drops dance on it.
It is 30 x 19 in plan with 6 posts and is about 11 tall. And being able to see the sky through the roof is so beautiful. If you have single span rafters of 4 8 mtrs the roof load width is 2 4 mtrs. Those provisions are primarily for horizontal wind loads.
With interior dimensions of 11 6 ft. You would require three post to cover the 6 5 mtrs of beam length. Take note of this measurement as this will be the first number in the size pergola you choose. Brown aluminum attached open lattice pergola with 5 posts maximum roof load 20 lbs.
The roof load width is half of the rafter span. Try to keep as near to that as possible. Roof load width rlw the other important consideration in determining timber lengths and sizes of your pergola is the size and weight of the roofing material the timber structure intends to hold up. 11 6 1 6 13 rafter length of 13 feet.
Several of you mention other structures and lattice framework. In our example showing a 13 x19 big kahuna attached pergola this calculation would be. Adobe aluminum attached open lattice pergola with 4 posts maximum roof load 10 lbs. To calculate your rafter length for an attached pergola it is measurement a 1 6.
Using wood is not an issue. Brown aluminum attached open lattice pergola with 5 posts maximum roof load 20 lbs. There is no maximum length for battens. When the slats are 3 inches or more apart the structure must be designed for a 20 pound live load.
Patio roof maximum beam rafter spans what is max distance between posts pergola main beams span building span tables for 8 x12 x24 western red pergola beam span calculator. The pergola is freestanding well away from any buildings. X 7 6 ft the charleston pergola can accommodate most outdoor furniture sets.