Performance outcomes
By the end, you can:
- 1Inspect the opening and unit before installation.
- 2Set hinge jamb plumb and control reveals.
- 3Perform a functional closeout check.
Working vocabulary
Name it precisely.
- Jamb
- The frame surface forming the sides and head of a door opening.
- Hinge leaf
- One flat plate of a hinge attached to the door or jamb.
- Strike
- The frame-side hardware receiving the latch.
- Shim
- A tapered or uniform spacer used to position and support an assembly.
01 · Instruction
Qualify the opening and unit
Confirm handing, swing, opening size, floor condition and unit condition. Dry-fit if needed and identify where the opening is tight, out of plumb or out of plane.
02 · Instruction
Control from the hinge jamb
Set the hinge side plumb and supported at hinge locations, then establish the head and strike-side reveals. Fastening should secure position without bowing the jamb. Follow the door manufacturer’s instructions.
Execution checklist
- ✓Hinge jamb plumb
- ✓Head reveal consistent
- ✓Strike reveal consistent
- ✓Jamb faces align with finish plane
03 · Instruction
Test the whole operating cycle
Open to multiple positions, close gently, confirm latch engagement and check that the slab does not drift because of jamb error. Recheck after casing fasteners.
Concept diagram—not a construction drawing. Dimensions, connections and approvals come from the project documents and local authority.
Field assignment
Door installation record
Install or mock up a prehung door and record reveal and operating checks.
Evidence to capture
- Opening measurements
- Shim and fastener map
- Reveal measurements
- Function checklist
Supervision rule: use qualified supervision whenever the assignment involves unfamiliar tools, energized equipment, structural work, excavation, work at height, or any condition outside your demonstrated competence.
Tool loadout
Tools earn their place by the operation.
Eye and hearing protection →
Baseline PPE for cutting and fastening operations.
Tape, square and marking tools →
Establish, transfer and verify dimensions before cutting.
Drill/driver and impact driver →
Pre-drill and install controlled jamb fasteners.
Oscillating multi-tool →
Undercut casing or correct localized interference.
Tool links are a shopping convenience, not a requirement to buy. Equivalent equipment may be appropriate when it matches the operation, material, accessory, capacity, guard, and manufacturer instructions.
Mastery check
Prove you can make the call.
Answer all three questions. The passing standard is 80%, so this short check requires 3 of 3. Explanations appear after submission.