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Contracts & Legalaka: specsaka: technical specifications

Specifications

In Plain English

The written technical standards describing the quality and type of all materials and work required on a project.

Definition

Specifications are the written technical requirements for materials, products, systems, and workmanship quality that supplement the drawings in defining the complete scope of a construction project. They are organized according to CSI MasterFormat divisions and sections. Specifications take precedence over drawings for quality and material requirements.

Why It Matters in Bidding

Because specifications carry the binding quality and material requirements, they define large portions of subcontractor scope and are the basis for substitution rights, submittals, and acceptance. Estimators who skim the spec book risk pricing the wrong material grade or omitting required testing, mockups, and warranties that subs will later claim as extras.

Example

A mechanical subcontractor flags during the bid that the specs require a five-year compressor warranty and factory startup, items the GC's estimator had not carried, so the GC issues a scope clarification before locking in the sub's number.

Related Terms

SpecificationDrawingsContract DocumentsCSI MasterFormat

Frequently Asked Questions

U.S. project manuals follow CSI MasterFormat, grouping work into numbered divisions and sections such as Division 03 Concrete or Division 23 HVAC. Estimators use this structure to route the right sections to each trade sub, which keeps scope coverage complete and makes apples-to-apples bid leveling far easier.
Each MasterFormat section is typically split into Part 1 General, Part 2 Products, and Part 3 Execution. Estimators mine Part 2 for material and product requirements that drive cost, and Part 3 for installation, testing, and acceptance steps that drive labor hours and subcontractor scope.
Drawings show location and arrangement but cannot fully convey grade, finish, or performance, so contracts generally let the written specs control material and quality questions. During bidding this means a generic symbol on a drawing must be priced to the spec'd product, not the cheapest item that fits the picture.

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