Camber Trusses are built with a camber in the bottom chord. The camber is designed to suit the span and load. A girder truss will have more camber than other trusses. The camber is progressively taken up as the load from the roof covering and ceiling is applied. Under no circumstances should trusses be supported along the span (unless designed for) by blocking or propping.   If a truss has been designed to be supported internally a “SUPPORT HERE” label will be affixed to the appropriate point.