Our timber engineering heritage shear panel performances

Properly designed plywood buildings have a veryimportant role to play in seismic areas. It is possible todesign a plywood roof system supported on a light steelbeam framing system which is as economical as steel-cladding on steel purlins supported by moment resistingportal frames. For warehouse type buildings, oneeconomical system of construction utilises concrete tilt-up walls, with plywood roof sarking supported byplywood box-beam purlins. These purlins in turn bear onsteel beams and columns.