50 Divisions refers to the 50 divisions of construction information, as defined by the Construction Specifications Institute (CSI)'s MasterFormat beginning in 2004. Before 2004, MasterFormat consisted of

16 Divisions The 16 Divisions of construction, as defined by the Construction Specifications Institute (CSI)'s MasterFormat MasterFormat is a standard for organizing specifications and other written information for commercial and institutional building projects ...

. MasterFormat has continued to be updated and revised since 2004, with new numbers, titles, and a new division added in 2010 and additional updates completed in 2010, 2011, 2012, 2014, 2016, and 2018. "50 Divisions" is the most widely used standard for organizing specifications and other written information for commercial and institutional building projects in the United States and Canada. Standardizing the presentation of such information improves communication among all parties.

Divisions

The latest officially released version of MasterFormat is the 2018 Edition, which uses the following Divisions: PROCUREMENT AND CONTRACTING REQUIREMENTS GROUP: *Division 00 — Procurement and Contracting Requirements SPECIFICATIONS GROUP ''General Requirements Subgroup'' *Division 01 — General Requirements ''Facility Construction Subgroup'' *Division 02 — Existing Conditions *Division 03 —

Concrete Concrete is a composite material composed of fine and coarse aggregate bonded together with a fluid cement (cement paste) that hardens (cures) over time. Concrete is the second-most-used substance in the world after water, and is the most wid ...

*Division 04 —

Masonry Masonry is the building of structures from individual units, which are often laid in and bound together by mortar; the term ''masonry'' can also refer to the units themselves. The common materials of masonry construction are bricks, building ...

*Division 05 —

Metals A metal (from Greek μέταλλον ''métallon'', "mine, quarry, metal") is a material that, when freshly prepared, polished, or fractured, shows a lustrous appearance, and conducts electricity and heat relatively well. Metals are typical ...

*Division 06 —

Wood Wood is a porous and fibrous structural tissue found in the stems and roots of trees and other woody plants. It is an organic materiala natural composite of cellulose fibers that are strong in tension and embedded in a matrix of lignin ...

Plastics Plastics are a wide range of synthetic or semi-synthetic materials that use polymers as a main ingredient. Their plasticity makes it possible for plastics to be moulded, extruded or pressed into solid objects of various shapes. This adaptabi ...

, and Composites *Division 07 —

Thermal A thermal column (or thermal) is a rising mass of buoyant air, a convective current in the atmosphere, that transfers heat energy vertically. Thermals are created by the uneven heating of Earth's surface from solar radiation, and are an example ...

and Moisture Protection *Division 08 — Openings *Division 09 — Finishes *Division 10 — Specialties *Division 11 — Equipment *Division 12 — Furnishings *Division 13 — Special Construction *Division 14 — Conveying Equipment *Division 15 — Plumbing + HVAC *Division 16 — Electrical + Lighting *Division 17 — RESERVED FOR FUTURE EXPANSION *Division 18 — RESERVED FOR FUTURE EXPANSION *Division 19 — RESERVED FOR FUTURE EXPANSION ''Facility Services Subgroup'': *Division 20 — Mechanical Support *Division 21 —

Fire Suppression Wildfire suppression is a range of firefighting tactics used to suppress wildfires. Firefighting efforts in wild land areas require different techniques, equipment, and training from the more familiar structure fire fighting found in populated ...

*Division 22 —

Plumbing Plumbing is any system that conveys fluids for a wide range of applications. Plumbing uses pipes, valves, plumbing fixtures, tanks, and other apparatuses to convey fluids. Heating and cooling (HVAC), waste removal, and potable water delive ...

*Division 23 — Heating Ventilating and Air Conditioning *Division 24 — RESERVED FOR FUTURE EXPANSION *Division 25 — Integrated Automation *Division 26 —

Electrical Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described ...

*Division 27 —

Communication Communication (from la, communicare, meaning "to share" or "to be in relation with") is usually defined as the transmission of information. The term may also refer to the message communicated through such transmissions or the field of inqui ...

s *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 A public utility company (usually just utility) is an organization that maintains the infrastructure for a public service (often also providing a service using that infrastructure). Public utilities are subject to forms of public control and ...

*Division 34 —

Transportation Transport (in British English), or transportation (in American English), is the intentional movement of humans, animals, and goods from one location to another. Modes of transport include air, land ( rail and road), water, cable, pipelin ...

*Division 35 —

Waterways A waterway is any navigable body of water. Broad distinctions are useful to avoid ambiguity, and disambiguation will be of varying importance depending on the nuance of the equivalent word in other languages. A first distinction is necessary ...

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 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 Electricity generation is the process of generating electric power from sources of primary energy. For utilities in the electric power industry, it is the stage prior to its delivery ( transmission, distribution, etc.) to end users or its st ...

*Division 49 — RESERVED FOR FUTURE EXPANSION

References

*Johnson, Robert W. (2004). ''Masterformat 2004 Edition: Master List of Numbers and Titles for the Construction Industry''. Alexandria, Va.: The Construction Specifications Institute. {{ISBN, 0-9762399-0-6. Construction Construction documents