Imagine a tranquil, spa-like getaway in your very own backyard – just steps from the rear of your home. Sound silly? Not with us leading the magical creation. King truss construction is used for simple roof trusses and short-span bridges. The truss consists of two diagonal members that meet at the apex of the truss, one horizontal beam that serves to tie the bottom end of the diagonals together, and the king post which connects the apex to the horizontal beam below.