How to calculate the maximum size of the gable overhang?
How to correctly calculate the maximum size of the gable overhang, depending on the total area of boards + osb -12mm?
There is an opinion that it should be up to 60cm.
But if you add boards to the crate, up to a solid flooring in the gable and add OSB on top, then the idea of strength increases.
Some information about my house. Walls, gables of brick, gable roof, 32-degree angle, the whole pie is:
— rafters 50x150, membrane, 50x50 counter-batten, 25x150 crate, 12mm OSB, carpet, shingles 5mm.
Share plz. ideas on this subject.
Answer
There is no such thing as "area dependence".
You can do a calculation on a cantilevered wooden beam. Put your loads and cross-sections of purlins or whatever is going to be on the roof into the calculation.
The overhang can be made much more, you just need a calculation.
400 mm outreach is allowed without calculation if only purlins/OSB connect outriggers and roof. A 600 mm outreach can be done if the outriggers go "inside the house" I think by 1.5 ... 2.5 times 600 mm. And then only by calculation. And in this further to do the crate from a board 50x100 on the rib will be stupid, and it is not the task of crates.
