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Glossary

MasterFormat

The standard numbering system that organizes construction specifications into divisions and sections.

MasterFormat, published by the Construction Specifications Institute (CSI) and Construction Specifications Canada, organizes specs by work results. Since the 2004 edition it has 50 divisions, numbered 00 to 49, with six-digit section numbers such as 07 54 23 for thermoplastic polyolefin (TPO) roofing.

Each section is written in three parts: Part 1 General, Part 2 Products and Part 3 Execution.

Why it matters to manufacturers

Learn the handful of section numbers for your products and you can find them in any project manual in seconds.

Read more: MasterFormat vs UniFormat

Related terms

Division 01The General Requirements division, which sets the rules for substitutions, product options and submittals.Project manualThe bound volume of bidding requirements, contract forms and technical specifications for a project.UniFormatA classification that organizes building information by systems and assemblies instead of by trade.

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