Job Duties: Load, unload, and transport construction materials.  Assist in framing houses, erecting walls, and building roofs Clean and pile salvaged materials Remove rubble and other debris at construction sites Read and interpret blueprints, drawings, and sketches to determine specifications and calculate requirements Prepare layouts in conformance to building codes, using measuring tools Measure, cut, shape, assemble and join materials made of wood, wood substitutes etc Build foundations, install floor beams, lay subflooring and erect walls and roof systems Fit and install trim items, such as doors, stairs, moulding and hardware Maintain, repair and renovate residences and wooden structures in establishments Supervise apprentices and other construction workers May prepare cost estimates for clients.