Construction Materials, Methods, and Specifications
This domain tests how materials and assemblies are selected, specified, and quality-controlled. Expect CSI MasterFormat, specification types, submittals, mockups, and testing.
Core rules
- MasterFormat organizes specifications by division; Division 01 covers general requirements.
- Prescriptive specs state products and methods; performance specs state results; proprietary specs must allow equals.
- Submittals include shop drawings, product data, and samples; the architect reviews for conformance, not redesign.
- Mockups and field tests verify appearance and performance before full installation.
Worked example
A fire-rated corridor requires 1-hour gypsum board. Specification 09 29 00 must state the assembly, thickness, studs, and firestopping. If the contractor submits 5/8-in Type X single layer on steel studs, the architect checks the UL assembly. A single layer may not achieve 1 hour depending on stud spacing; the correct response is to reject the submittal and require the tested assembly, not to approve because Type X sounds fire-rated.
Traps
Specifying 'or equal' without criteria; approving submittals as design changes; missing Division 01; relying on manufacturer data without assembly test.