Construction Divisions

Sometimes referred to as the “Dewey Decimal System” of building construction, MasterFormat is a product of the Construction Specifications Institute (CSI) and Construction Specifications Canada (CSC).

It provides a master list of Divisions, and Section numbers with associated titles within each Division, to organize information about a facility’s construction requirements and associated activities.

Division 01 — General Requirements

Facility Construction Subgroup
Division 02 — Existing Conditions (e.g., alterations to existing natural conditions)
Division 03 — Concrete (e.g., footings, slabs, precast, grouting)
Division 04 — Masonry (e.g., concrete block, brick, stone)
Division 05 — Metals (e.g., structural steel framing, joists, decorative metals, etc.)
Division 06 — Wood, Plastics, and Composites (e.g., wood framing, finish carpentry, plastic decking)
Division 07 — Thermal and Moisture Protection (e.g., insulation, water barriers, sealant)
Division 08 — Openings (e.g., doors, windows, and louvers)
Division 09 — Finishes
Division 10 — Specialties
Division 11 — Equipment
Division 12 — Furnishings
Division 13 — Special Construction
Division 14 — Conveying Equipment
Division 15 — RESERVED FOR FUTURE EXPANSION
Division 16 — RESERVED FOR FUTURE EXPANSION
Division 17 — RESERVED FOR FUTURE EXPANSION
Division 18 — RESERVED FOR FUTURE EXPANSION
Division 19 — RESERVED FOR FUTURE EXPANSION

Facility Services Subgroup:
Division 20 — RESERVED FOR FUTURE EXPANSION
Division 21 — Fire Suppression
Division 22 — Plumbing
Division 23 — Heating, Ventilating, and Air Conditioning (HVAC)
Division 24 — RESERVED FOR FUTURE EXPANSION
Division 25 — Integrated Automation
Division 26 — Electrical
Division 27 — Communications (e.g., data, voice, audio/visual systems)
Division 28 — Electronic Safety and Security
Division 29 — RESERVED FOR FUTURE EXPANSION

Site and Infrastructure Subgroup:
Division 30 — RESERVED FOR FUTURE EXPANSION
Division 31 — Earthwork
Division 32 — Exterior Improvements
Division 33 — Utilities
Division 34 — Transportation
Division 35 — Waterway and Marine Construction
Division 36 — RESERVED FOR FUTURE EXPANSION
Division 37 — RESERVED FOR FUTURE EXPANSION
Division 38 — RESERVED FOR FUTURE EXPANSION
Division 39 — RESERVED FOR FUTURE EXPANSION

Process Equipment Subgroup:
Division 40 — Process Interconnections
Division 41 — Material Processing and Handling Equipment
Division 42 — Process Heating, Cooling, and Drying Equipment
Division 43 — Process Gas and Liquid Handling, Purification and Storage Equipment
Division 44 — Pollution and Waste Control Equipment
Division 45 — Industry-Specific Manufacturing Equipment
Division 46 — Water and Wastewater Equipment
Division 47 — RESERVED FOR FUTURE EXPANSION
Division 48 — Electrical Power Generation
Division 49 — RESERVED FOR FUTURE EXPANSION

For more information: MasterFormat.com

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