First, describe the work and worksite
A reinforcing crew will assemble a freestanding column cage on a supported ground-level jig, lift it with the specified rigging arrangement and secure it in a released foundation location. This fictional learning example records planned controls; it supplies no actual inspections or work authorization.
- The cage design identifies assembly supports, lifting points and temporary stability at the receiving location.
- The lift and receiving-area access must be planned with the erection and foundation crews.
- This excludes climbing reinforcement, work inside an unprotected excavation and slab-mat installation.
Questions before work
- What supports the cage during assembly, rotation and placement?
- Which lifting points are designed for the assembled cage?
- How is the cage secured before the crane releases it?
Build the analysis one step at a time
What will the worker do? How could someone be harmed? What prevents or reduces that exposure? Who checks the control, and when?
1. Release the assembly and receiving areas
Hazard: Unstable ground or an unprotected receiving area can expose workers to collapse or falls.
Control: Foreperson confirms the supported assembly location and a protected receiving work area. Obtain any separate excavation and access release before placement.
Verification: Walk both locations and check support and access evidence.
Why this belongs in the analysis: Safe assembly does not establish safe receiving conditions.
2. Stage bars and build on the jig
Hazard: Rolling bars, projecting steel and an unstable partial cage can injure the crew.
Control: Restrain stock, protect impalement exposure and use the specified jig and temporary assembly supports. Arrange tying positions without standing inside an unstable cage.
Verification: Lead checks restraints and support as the cage develops.
Why this belongs in the analysis: A partially tied cage can move before it is ready to lift.
3. Check the completed cage and lift points
Hazard: Tie-wire joints or an unintended lifting point can fail during handling.
Control: Use the designed cage lifting arrangement and complete required assembly checks. Qualified rigging personnel confirm gear and lifting-point suitability; hold the lift if the load path is unclear.
Verification: Match the completed cage and lifting arrangement to current documents.
Why this belongs in the analysis: Tie wire is not automatically a designed lifting connection.
4. Lift and control the cage
Hazard: The cage can rotate, deform or strike workers.
Control: Clear the lift path, use agreed signals and the planned control method, and keep people outside the moving cage and suspended-load zone. Stop for unexpected shape change.
Verification: Lift lead monitors the cage from a safe position throughout movement.
Why this belongs in the analysis: Flexible cages may behave differently from rigid fabricated loads.
5. Place and secure the cage
Hazard: A vertical cage can overturn or trap a worker at its base.
Control: Land on the released support and install specified temporary restraint before crane release. Use tools and designated positions that avoid the cage’s fall and pinch paths.
Verification: Erection lead verifies receiving support and restraint against the plan before unrigging.
Why this belongs in the analysis: Vertical reinforcing steel needs adequate support against collapse.
6. Protect and hand over
Hazard: Unprotected projections or changed support can injure subsequent crews.
Control: Maintain impalement protection and temporary restraint, identify unfinished connections and communicate loading and access restrictions.
Verification: Foreperson checks protection and support status with the receiving crew.
Why this belongs in the analysis: The placed cage remains an exposure until the next phase protects it.
What does a useful control look like?
| Needs improvement | More useful for this scenario |
|---|---|
| Be careful around the equipment. | Use the designed cage lifting arrangement and complete required assembly checks. Qualified rigging personnel confirm gear and lifting-point suitability; hold the lift if the load path is unclear. |
| Check the area before starting. | Foreperson confirms the supported assembly location and a protected receiving work area. Obtain any separate excavation and access release before placement. |
Decisions that change the analysis
Can the slab rebar example be reused without changes?
It can provide handling background, but a freestanding cage adds assembly stability, a designed lift and support before crane release. Those decisions are outside the published slab-mat example.
What must be recorded before this example is used on a job?
Replace the scenario with the actual work, identify additional hazards with the crew, and record the applicable instructions, responsible people, inspection findings, unresolved actions and required authorization. A planned verification is not an inspection result.
Agree when the crew will pause
- Assembly support, cage shape or lifting-point evidence changes.
- Receiving access or excavation protection is unresolved.
- The cage moves, deforms or cannot be secured as planned.
After a pause, correct the condition, reassess the work, and obtain required authorization before restarting. Keep unresolved actions visible.
Download the worked example and free template
No account or paid membership required. The worked example contains planned controls. The blank template is for your own work; neither includes fabricated inspection results, signatures or approval.
Your editable working copy
Build and download your draft
Start blank or load the learning example. Replace its assumptions with your actual conditions and involve the people doing the work. Your entries stay in this browser tab; download a copy before leaving or refreshing.
1. Describe your work and site
2. Work through each task
Describe an observable step, how someone could be harmed, and the control that acts on that hazard. Identify who checks it and what evidence is needed.
3. Record changes, checks, and open actions
Walk the work area, review with the crew, and resolve missing controls. Follow the required approval process. This tool does not judge completeness, verify signatures or authorize work.
Open the downloaded file in a browser, then use Print → Save as PDF for a printable copy.
Training needs to confirm
- Cage assembly and temporary support for the actual design.
- Applicable rigger, signal-person and crane roles; task briefing does not establish qualifications.
Confirm applicable qualifications, task instruction and actual training evidence for the people assigned. Related toolbox talks support crew discussion; they do not establish competence.
Common questions
Can this be used as a JSA?
Use the Task | Hazard | Control structure if it meets the employer’s format. Adapt the boundaries, controls, verification and records to the actual job.
Does this provide a completed USACE AHA?
No. Use the project’s required AHA process, risk method, supporting fields and acceptance requirements. The existing formwork AHA explains the additional structure.
Are these resources part of a paid course?
This walkthrough, browser draft builder and downloads are free public resources, separate from Academy course enrollment.
References and source note
- OSHA 1926.703 Cast in place concrete and reinforcing steel
- OSHA 1926.701 General concrete construction requirements
- OSHA 1926.21 Safety training and education
Original worked example developed for the stated scenario. Primary references support the planning framework; the actual equipment manual, product instructions and project design must supply applicable operating and acceptance criteria. Use actual equipment instructions and site requirements alongside these references. Reference review: October 9, 2026.