JHA / JSA / AHA builderSuspended Slab Concrete Placement JHA
A JHA breaks the work into steps, hazards and controls. Use this example to build a draft for your actual job and review it with your crew.
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Step 1 of 4 · Working draft
Your job
Tell Jenkins what you’re planning and where the work will happen. Use the actual job details.
Use the published example’s suggestions when they fit your task, or write your own steps. These are planned controls, not verified worksite conditions.
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.
Walk through the plan with the people doing the work. Resolve missing controls and agree who checks them. Moving to the next step does not approve the work.
Confirm people, equipment and emergency arrangements
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.
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Your Suspended Slab Concrete Placement JHA
Walk through the job in order. Use these possible hazards, planned controls and checks to start a conversation about your actual work.
011. Confirm the bay and pour release
Possible hazards: An unreleased deck or changed pour sequence can impose loads the temporary structure cannot carry.
Planned controls: Placing and formwork leads compare current drawings, pre-pour findings and specified loads with the actual bay. Resolve open actions before accepting concrete; identify who controls pour progression and who can stop flow.
Check before work: Both leads confirm the bay release and record unresolved loading or support questions.
022. Establish protected placing positions
Possible hazards: Workers can fall at edges or openings, or overload the deck by staging hose and supplies together.
Planned controls: Set the specified crew routes and hose support arrangements without removing form restraint. Protect edges and openings and distribute staging within the released limits; close affected areas below and preserve evacuation routes.
Check before work: Access lead and formwork lead check routes, protection and staged loads before delivery.
033. Verify support monitoring and pump coordination
Possible hazards: A warning sign can be missed or flow can continue after a stop request.
Planned controls: Assign the required shoring checks immediately before, during and immediately after placement. Observers use planned safe positions and report settlement, movement or loss of contact. Test the agreed communication and stop signal with the pump operator before flow.
Check before work: Formwork lead checks the inspection assignments; placing lead confirms the communication test.
044. Place within the released progression
Possible hazards: Concrete piled ahead of the pour front can cause local overload; hose movement can strike or unbalance workers.
Planned controls: Operator and placing lead follow the actual controlled sequence and distribution limits. Keep hose handlers on protected routes and other workers outside hose movement. Maintain the flow-stop response; pause for unexpected movement or blockage and use the separate pump procedure rather than attempting a pressure-side repair.
Check before work: Placing lead watches distribution while assigned observers report actual support findings.
055. Consolidate and manage worker exposure
Possible hazards: Congested bars and wet concrete can cause trips, tool damage, splash and chemical burns.
Planned controls: Use the specified consolidation method and maintained electrical tools with cords routed out of traffic and standing water. Maintain designated footing and protect skin and eyes with suitable equipment; remove contamination promptly using the provided washing arrangements.
Check before work: Crew lead checks footing, tool condition and workers’ ability to reach clean washing supplies.
066. Close the pour and transfer restrictions
Possible hazards: Later crews can remove support or add loads before the slab can sustain them.
Planned controls: Complete the immediate post-placement shoring check and record actual findings. Hand the bay to finishing and curing roles with support, access and loading restrictions intact; keep subsequent material staging and support removal under separate release decisions.
Check before work: Formwork and placing leads record findings and brief the receiving crew on remaining restrictions.
Example scope and starting conditions
A placing crew will pump concrete into one released cast-in-place suspended building slab on an erected shored form deck. The formwork and placement plans control the pour sequence, temporary loading, protected work routes and support monitoring. Pump setup and later finishing have separate analyses. This fictional learning example describes planned controls; it records no actual inspection or work authorization.
- Current formwork and placing documents establish permitted construction loads, pour distribution and progression; no crew member may infer capacity from the deck’s appearance.
- The pre-pour review, assigned shoring inspections and communication with the pump operator must be established for the actual bay and the area below.
- This is partial coverage of elevated concrete placement, limited to a shored suspended slab. Concrete buckets, post-tensioning, pump setup, form erection, powered finishing and stripping are excluded.
Know when to pause
- The bay release, pour distribution or intended construction loading changes.
- An observer reports settlement, support movement, contact loss or another unexplained change in the form system.
- A pump stop signal fails, safe placing access is lost or an opening becomes unprotected.
After a pause, correct the condition, reassess the work, and obtain required authorization before restarting.
Free example and template
No account required. The worked example contains planned controls. The blank template is for your own work; neither includes fabricated inspection results, signatures or approval.
Worked exampleNeed help? Ask Jenkins
Jenkins · Your Safety Concierge
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For managers
Does the team have what it needs to carry out the plan? Give the crew time, equipment and support, and make it clear who will resolve anything that is missing.
Manager checks and supporting resources
Confirm the people doing the work have the time, equipment, information and support to carry out the plan. Agree who checks the controls and who resolves open actions.
Questions to resolve before work
- Who releases the current bay and verifies the concrete distribution and temporary loading limits?
- How will assigned observers inspect shoring before, during and immediately after the pour without entering a hazardous area?
- Who can stop the pump and deliveries when the form system, access or pour progression changes?
Training and qualifications to confirm
- Brief placing workers and pump communication roles on the actual elevated pour sequence, permissible loading and prompt stop signal.
- Train assigned formwork observers and workers to recognize support movement and preserve opening protection, safe routes and wet-concrete exposure controls.
Confirm the actual training evidence for the assigned people. A toolbox talk does not establish competence.
Decisions that change the plan
Can the slab-on-grade concrete-pouring example be reused unchanged?
No. It explicitly excludes suspended slabs. This scope adds the temporary formwork load path, controlled concrete distribution and assigned shoring observations; a pump-interface briefing alone does not release an elevated deck.
What must the crew record for actual use?
Record the bay and drawing revisions, pre-pour release and open actions, load and sequence limits, hose and crew routes, observation and stop-signal roles, actual pre/during/post support findings and the finishing/curing handover restrictions.
Keep planning connected
Resources that support this JHA
Additional tools for task planning and safe work. Start with the free resources; explore paid options only when they meet an additional need.
Toolbox talks for the work
Prepare a practical crew discussion.
Concrete Formwork: Verify Stability Before Placement →Concrete Pumps and Hoses: Verify Before Flow →Wet Concrete: Prevent Skin and Eye Contact →
Safety program resources
Review procedures, roles, and requirements.
Browse the existing catalog and confirm the scope and purchase availability of each program.
Browse safety programs →
Paid service · Availability
Task-specific training and qualifications
Explore applicable training and qualification needs.
Task-specific training services are not currently available to book here. Start with the free training-needs lookup; a toolbox talk or online course alone does not establish competence or employer authorization.
Review training needs · Free →People, equipment, emergency arrangements and open actions are recorded in the guided JHA’s Crew review step.
Open the crew review step →For safety professionals
How do we know the planning process and controls are working? Connect what the crew reports with field checks, risk decisions and the evidence behind your system.
Industry context, SIF, control verification and AHA review
Guidance and evidence
Review the method, risk decisions and evidence behind the plan. Use the actual jurisdiction, equipment instructions, employer process and project requirements.
Task-by-task control and verification rationale
1. Confirm the bay and pour release
Hazard: An unreleased deck or changed pour sequence can impose loads the temporary structure cannot carry.
Control: Placing and formwork leads compare current drawings, pre-pour findings and specified loads with the actual bay. Resolve open actions before accepting concrete; identify who controls pour progression and who can stop flow.
Verification: Both leads confirm the bay release and record unresolved loading or support questions.
Why this belongs in the analysis: Placement loads a temporary structural system as well as the concrete area.
2. Establish protected placing positions
Hazard: Workers can fall at edges or openings, or overload the deck by staging hose and supplies together.
Control: Set the specified crew routes and hose support arrangements without removing form restraint. Protect edges and openings and distribute staging within the released limits; close affected areas below and preserve evacuation routes.
Verification: Access lead and formwork lead check routes, protection and staged loads before delivery.
Why this belongs in the analysis: The working arrangement can change loads before the first concrete arrives.
3. Verify support monitoring and pump coordination
Hazard: A warning sign can be missed or flow can continue after a stop request.
Control: Assign the required shoring checks immediately before, during and immediately after placement. Observers use planned safe positions and report settlement, movement or loss of contact. Test the agreed communication and stop signal with the pump operator before flow.
Verification: Formwork lead checks the inspection assignments; placing lead confirms the communication test.
Why this belongs in the analysis: A named observer needs a safe viewing position and a usable way to interrupt the pour.
4. Place within the released progression
Hazard: Concrete piled ahead of the pour front can cause local overload; hose movement can strike or unbalance workers.
Control: Operator and placing lead follow the actual controlled sequence and distribution limits. Keep hose handlers on protected routes and other workers outside hose movement. Maintain the flow-stop response; pause for unexpected movement or blockage and use the separate pump procedure rather than attempting a pressure-side repair.
Verification: Placing lead watches distribution while assigned observers report actual support findings.
Why this belongs in the analysis: Control depends on where the concrete accumulates, not just total volume delivered.
5. Consolidate and manage worker exposure
Hazard: Congested bars and wet concrete can cause trips, tool damage, splash and chemical burns.
Control: Use the specified consolidation method and maintained electrical tools with cords routed out of traffic and standing water. Maintain designated footing and protect skin and eyes with suitable equipment; remove contamination promptly using the provided washing arrangements.
Verification: Crew lead checks footing, tool condition and workers’ ability to reach clean washing supplies.
Why this belongs in the analysis: Working longer in contaminated clothing can increase injury even without immediate pain.
6. Close the pour and transfer restrictions
Hazard: Later crews can remove support or add loads before the slab can sustain them.
Control: Complete the immediate post-placement shoring check and record actual findings. Hand the bay to finishing and curing roles with support, access and loading restrictions intact; keep subsequent material staging and support removal under separate release decisions.
Verification: Formwork and placing leads record findings and brief the receiving crew on remaining restrictions.
Why this belongs in the analysis: A completed pour is not a strength test or a stripping authorization.
Compare control wording
| Needs improvement | More useful for this scenario |
|---|---|
| Pour evenly and keep an eye on things. | Placing lead follows the released progression and distribution limits; assigned observers inspect the shoring before, during and immediately after placement and can stop flow. |
| The concrete is in, so the next crew can use the slab. | Leads hand over actual support findings and maintain access, loading and strength-based removal restrictions after placement. |
Common questions
Can this example be used as a JSA?
Adapt its Task | Hazard | Control analysis to the employer’s JSA format and the actual work. Confirm the assigned checks and record real findings before relying on the plan.
What changes if the project requires an AHA?
Use the project’s governing AHA format, risk method, supporting records and acceptance process. The published formwork AHA illustrates that additional structure; this JHA does not establish an AHA risk rating or acceptance.
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 Formwork and shoring inspections
- OSHA 1926.701 Concrete construction loads
- OSHA Preventing Skin Problems from Working with Portland Cement
Original instructional scenario with planned controls. Primary references support hazard planning. Use actual equipment and product instructions, project design and employer requirements to establish field criteria. This example supplies no inspection findings or work authorization. Use actual equipment instructions and site requirements alongside these references. Reference review: October 9, 2026.
Developed by Todd Jerome Jenkins, MS, CSP · Edition v1.0 · October 13, 2026
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