Part A: Recommended Method for Computation of Safe Roof Loads, of the Structural Analysis of Unistrut Space-Frame Roofs describes the analysis in detail. It contains numerous examples showing how the method can be applied in determining safe loads for Unistrut space-frame roofs where the roof supports vary either in type or in their plan arrangement. Once the proposed method has been fully understood, Part A needs to be consulted only from time to time. Being primarily a textbook, it has been prepared and printed as a separate volume.