Responsibilities Tasks Prepare cost evaluations for materials and/or labour Read plans, drawings and sketches to determine work requirements Prepare layouts, using measuring tools, taking into account building code requirements Measure, cut, shape and assemble wooden elements, particleboard, light steel or other materials Erect foundations, install floor beams, lay subflooring support, assemble prefabricated framing and roofing elements Adjust and install windows, doors, stairs and hardware Establish construction site work schedule and supervise its execution Supervise other workers Estimate costs and materials