Education: Secondary (high) school graduation certificate. Work setting: Various locations. Tasks: Prepare estimates of labour and/or material costs. Read blueprints, drawings and sketches to determine work requirements. Measure, cut, shape, assemble and join materials made of wood, wood substitutes, lightweight steel and other materials. Build foundations, install floor beams, lay subflooring and erect walls and roof systems. Fit and install windows, doors, stairs, mouldings and hardware. Schedule and co-ordinate work on sites. Supervise other workers. Estimate costs and materials. Experience: 2 years to less than 3 years.