australian residential timber framed dwelling

addition application architecture as1684 australia australian beam blocking bottom bracing building certification certifier cladding clites code compliance construction council development domestic down dwelling engineering for forces framed girder grip hanger house laws load loading members nail national ncc nogging nsw occupation owner plate plumbing principles private racking residential roof safe sarking screws sisalation span standards strict stud subject tie timber top torsion triple truncated truss valley ventilation wall window wiring wooden