This gantry build is for a floor area of 4m x 4m. The actual lighting gantry has the dimensions of 2.8m x 2.8m x 2445 / 3.550mm high. Even a build as this is fairly simple to erect, assemble the top structure, you now have a box on small stumps, the projections that come down from the lower set of truss junctions. To raise this up we add in smaller leg sections, either lengths of 1m or 500mm. Add two lengths to one side of the truss structure, now it is on a cantilever, go to the other side and add in the same leg length, it is level again, repeat this method until your truss system stands at its full height.