Building Codes, Standards and Professional Practice
Domain overview
This section tests code interpretation, load combinations, approval procedures and professional conduct. The exam expects you to know which document governs when drawings, specifications and codes conflict, and to apply factored load cases correctly.
Core rules
- The legally adopted building code and approved drawings set minimum requirements; contract specifications may be stricter but cannot relax safety.
- Design for the governing factored combinations, including gravity, wind or seismic, and check serviceability separately.
- Revisions must be recorded, checked and approved; site personnel must not build from superseded drawings.
- Professional practice includes competence limits, conflict-of-interest disclosure, inspection records and clear communication of assumptions.
Worked example
A slab has dead load 5.0 kN/m² and live load 3.0 kN/m². Compare two gravity combinations: 1.5(DL+LL)=1.5(5.0+3.0)=12.0 kN/m², and 1.2DL+1.6LL=1.2×5.0+1.6×3.0=10.8 kN/m². The 1.5(DL+LL) case governs for this gravity-only check. If seismic or wind is involved, also check the relevant 1.2(DL+LL±EQ) or 1.5(DL±EQ) case; do not assume the gravity case always controls.
Traps
Designing with service loads, ignoring alternate load cases, using an outdated code edition, and accepting verbal site changes without a controlled revision.