in diagram fig1 all beams 2 and 2 39 are supported in orthogonal arrangement by square posts 1 and 1 39 of equal size with the distance between the faces of perimeter posts 1 39 being subdivided into equal modular measurements b and c representing equal widths of mostly vertical wall panel type infill means 4 between face of posts and the wall panel means are equal in depth to the width of the posts fig1 therefore illustrates that given an orthogonal framework of posts beams and infill means generally panels at least one variation in the width of infill means must occur and that such a variation is caused by the width of the post displacing the distance occurring between face of posts but not occurring between the centerlines of beams and it is further illustrated in fig1 that any variation in beam length as a multiple of infill means width a necessarily generates another third variation c in modular measurement wall panel width an essential goal to economical mass production is the need to minimize variations in the size of pieces assembled to create a final end product in the present case a building construction the preferred arrangement shown in diagram fig2 addresses the problem of the multiplicity of panel widths occurring in the prior art arrangement of fig1 by aligning beams 2a and 2b with the face of square post 1a located at the outside.