Strong Construction Co Inc

C-8: Concrete Contractor

Forms, pours, places, finishes, and installs specified mass, pavement, flat and other concrete work, and places and sets screeds for pavements or flatwork.

Not authorized: Does not include application of plaster coatings or placing and erecting steel reinforcing bars.

C-9: Drywall Contractor

Lays out and installs gypsum wall board and assemblies, including nonstructural metal framing members, and performs taping and texturing operations to produce a continuous smooth or textured surface.

Not authorized: Does not include lathing and plastering (see C-35).

C-10: Electrical Contractor

Places, installs, erects, or connects electrical wires, fixtures, appliances, apparatus, raceways, conduits, solar photovoltaic cells, or any part thereof which generate, transmit, transform, or utilize electrical energy.

Not authorized: Electricians working under a C-10 must be certified per CA Labor Code.

C-15: Flooring and Floor Covering Contractor

Prepares surfaces and installs carpet, resilient sheet goods, resilient tile, wood floors and flooring including finishing and repair, and any other established flooring materials.

Not authorized: Does not include ceramic tile (see C-54).

C-20: Warm-Air Heating, Ventilating and Air-Conditioning (HVAC) Contractor

Fabricates, installs, maintains, services, and repairs warm-air heating systems and water heating heat pumps, ventilating systems, air-conditioning systems, and the ducts, registers, flues, humidity and thermostatic controls and air filters in connection with these systems. Includes solar-powered HVAC systems.

Not authorized: Does not include boiler or steam heating (see C-4) or refrigeration below 50F (see C-38).

C-29: Masonry Contractor

Installs concrete units, clay products, concrete and glass block, natural and manufactured stone, terra cotta, and fire brick for structural and non-structural walls, fences, paving, ceramic veneer, and thin brick facing.

C-33: Painting and Decorating Contractor

Prepares surfaces by scraping, sandblasting, or other means and applies paints, papers, textures, fabrics, pigments, oils, varnishes, shellacs, stains, waxes, adhesives, and other coatings for decorating, protecting, fireproofing, and waterproofing.

C-35: Lathing and Plastering Contractor

Coats surfaces with mixtures of sand, gypsum plaster, lime and water, or cement and water, applied by trowel or spray for soundproofing and fireproofing. Installs lath, metal studs, and support materials for plaster coatings.

C-36: Plumbing Contractor

Provides means for a supply of safe water and proper disposal of fluid waste, including piping, storage tanks, venting, gas appliances and connections, water and gas piping, water heating equipment including solar, and health and safety devices such as backflow preventers and gas earthquake valves.

Not authorized: Does not include forced warm-air units (see C-20).

C-39: Roofing Contractor

Installs products and repairs surfaces that seal, waterproof, and weatherproof structures using asphaltum, pitch, tar, felt, glass fabric, urethane foam, metal roofing systems, shakes, shingles, roof tile, slate, and other roofing materials.