Buildings and portable buildings, namely, supporting and non-supporting structures not made of metal, namely, supporting columns, non-supporting columns, supporting walls, non-supporting dividing walls and bracing elements not made of metal; portable constructions, namely, single and multi-floor constructions comprised of, vertical and horizontal load bearing members, namely, beams, columns and walls not made of metal, stairs and stairwells, façade constructions, namely, panels and sandwich ...