"A METHOD AND APPARATUS FOR STIFFENING A FRAMEWORK MODULE FOR USE IN MODULAR BUILDING CONSTRUCTION"
A framework module (1) for use in modular building construction comprises a plurality of elongate upright and cross beams (2, 3) rigidly connected at or towards their ends to form a box frame with open side and end faces, and at least one elongate connection point (4) on one of the beams, configured to allow mutual connection with an equivalent connection point located on a substantially identical adjacent framework module so that a plurality of framework modules can be connected together to form an open-web truss of vertically and horizontally aligned members, the connection points (4) welded to the beams, the inner weld bead (102) between the inside edge of the connection point 4 and the surface of the beam concave and substantially uniform along the entirety of the weld bead (102).