Concrete services

**Includes:** - services of erection of reinforced concrete frame, requiring specialized skills or equipment because of its size or the method used - construction services of domes and thin shells in concrete - special trade construction services involving steel bending and welding for reinforced concreting on construction projects - casting of concrete in formwork and other services generally making use of concrete (general foundations, base courses, raft foundations, stanchions, floors, etc.) - services involving the construction of formwork and reinforcement - consolidation of foundations

**Excludes:** - prefabrication of concrete structural components for construction, cf. 37550 - production of ready-mixed concrete, cf. 37510 - construction services involving the paving of streets, highways and public sidewalks, cf. 54211 - construction services of bridges, elevated highways and tunnels, cf. 5422 - foundation services, cf. 54512