The program of the strength calculation of wooden structures roof roofs.

The calculation of the strength of the rafters and sheathing of the specified section of the rod and your board. Easy to set all parameters - Load, spans, sections, and spacing of the others. The program is in Exel format. The calculation is made by the method according to the handbook: Shishkin "Examples of calculation of structures made of wood and plastic," Moscow, 1974 Stroyizdat and SNIP II-25-80