Installation and Construction Practices
What this domain tests
Domain 4 tests field control: whether installation follows approved documents, manufacturer instructions, and accepted workmanship standards, with records kept at hold points.
Core rules
- Pre-installation. Verify approved submittals, material conformance, storage conditions, and mock-up acceptance.
- Manufacturer instructions. Follow torque values, fastener types, clearances, sealants, cure times, and environmental limits.
- Hold points. Inspect before concealment; do not cover work until the required release is documented.
- Tolerances. Measure alignment, plumb, level, anchor embedment, and clearances; do not eyeball them.
- Change control. Field changes require an RFI or change order; redline as-built conditions continuously.
- Protection. Manage weather, traffic, corrosion, and housekeeping throughout installation.
Worked example
An anchor schedule requires a torque value, but the crew proposes 'snug tight' because the torque wrench is missing. Reasoning: torque controls clamp load and vibration resistance. Obtain a calibrated wrench, follow the approved schedule, and record values by anchor location; do not substitute feel.
Traps that cost marks
- Over-torque or under-torque outside the approved schedule.
- Mixing anchor types or fastener grades.
- Concealing work before inspection release.
- Installing outside temperature, wind, or moisture limits.
- Relying on verbal field direction instead of a document.