Sharaxaad Gaaban:

1.Mainly loo isticmaalo maroojin shaaha engegan, sidoo kale loo isticmaalo habaynta aasaasiga ah ee geedo yaryar, dhirta kale ee daryeelka caafimaadka.

2. Dusha sare ee miiska rogrogmada waa in hal orod laga soo riixo saxan bir ah, si ay u sameeyaan guddi iyo joists noqdaan integral, taas oo yaraynaysaa jebinta ratio ee shaaha oo kordhiyaa ay saamiga.