Elective Units of Competency: Specialist Steel Fixing Skills
What electives add
Elective units let a steel fixer specialise: post-tensioning, precast panel reinforcement, prestressing, mechanical splicing, welding or cutting, rigging and crane-assisted placement, and concreting support roles. Questions in this domain reward knowing where a specialist task stops and a licensed or ticketed task begins.
Concepts to master
- Post-tensioning: ducts, anchorages, tendons and stressing are sequenced and supervised; never cut, heat or weld a tendon or anchorage, and never drill into a slab without checking tendon locations.
- Precast reinforcement: cages are fabricated to a set-out that matches lifting points and cast-in items; dimensional accuracy matters more than on-site tolerance because panels cannot be adjusted after casting.
- Mechanical splicing: couplers must match bar size and grade, be installed to the manufacturer's torque or turn count, and be inspected before concealment.
- Cutting and heating: oxy cutting of reinforcement is generally not permitted for structural bar without approval; bending must use correct mandrel diameters to avoid cracking.
- Rigging and lifting: load estimation, slinging, tag lines and exclusion zones. Crane work needs the right licence and a documented lift plan.
- Pre-pour checks: reinforcement inspection, hold points, and sign-off before concrete is placed.
Traps in questions
Common distractors include heating a bar to make it fit, drilling a slab without scanning for tendons, assuming any coupler fits any bar, and treating a hold point as optional if the supervisor is busy. Another trap is confusing nominal bar size with the actual diameter of deformed bar.
Worked rule of thumb
If a task needs a licence, ticket or engineer's approval, the correct answer is to stop and escalate, never to proceed because you have seen it done before.