JHA / JSA / AHA builderDesigned Floor Opening Framing 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 Designed Floor Opening Framing JHA
Walk through the job in order. Use these possible hazards, planned controls and checks to start a conversation about your actual work.
011. Release the opening frame
Possible hazards: Missing support or a substituted header can leave interrupted joists without a load path.
Planned controls: Framing lead checks the opening layout, member schedule, bearings and connection sequence against current documents. Identify temporary support and loading restrictions; hold work for conflicting dimensions or an unresolved hanger or trimmer detail.
Check before work: Lead compares all opening members and supports with the released drawing.
022. Protect the assembly area
Possible hazards: Workers or tools can fall through the developing opening or incomplete joist lines.
Planned controls: Provide the planned protected platforms or conventional fall-protection arrangement and practicable rescue. Separate work below and retain suitable guarded or covered access where the sequence permits; do not treat a loose member as a walkway.
Check before work: Access lead checks every proposed receiving and fastening position.
033. Stage and restrain the members
Possible hazards: Long stock can roll, strike a helper or overload an incomplete bay.
Planned controls: Use the released handling method and landing locations for identified headers, trimmers and joists. Support and restrain members in their installation orientation, keep workers clear of movement and avoid stockpiling on an unaccepted frame.
Check before work: Movement lead checks material locations and planned supports before transfer.
044. Assemble headers and trimmers
Possible hazards: A partially connected header can drop or rotate as a receiving joint closes.
Planned controls: Follow the drawing’s interconnected assembly sequence with the specified temporary support. Use positioning tools and safe hand locations, complete required initial connections and keep support until the designated release; do not alter a hanger or bearing to force fit.
Check before work: Framing lead checks seating and connection progress at the planned hold points.
055. Connect interrupted joists and restraint
Possible hazards: An omitted fastener or unrestrained assembly can fail during decking or construction loading.
Planned controls: Install the identified joists, compatible connectors and specified restraint with all required fasteners. Maintain protected positions and temporary support while the complete load path is reviewed; no universal hanger fastening pattern substitutes for the actual detail.
Check before work: Lead records actual bearing, connector and restraint findings against the drawing.
066. Hand over the opening and load limits
Possible hazards: Decking crews may remove protection or load a frame whose connections remain incomplete.
Planned controls: Retain required opening protection, identify unfinished connections and transfer permitted landing and loading locations. Obtain the designated frame release before decking begins; later stair installation or guard changes require their own coordinated handover.
Check before work: Receiving lead confirms frame status and the continuing opening-control method.
Example scope and starting conditions
A framing crew will install the designed solid-sawn headers, trimmers and interrupted joists around one new stair opening in a low-rise building floor before decking. The incomplete frame is worked from protected positions under a released erection sequence. This fictional learning example describes planned controls; it records no actual inspection or work authorization.
- Current framing documents define each member, bearing, hanger, fastener and temporary support needed around the opening.
- Protected access, the area below and opening protection remain effective as the interconnected frame is assembled.
- Cutting an existing loaded floor, roof openings, design calculations and a general floor-joist installation sequence are excluded.
Know when to pause
- Opening geometry, supporting members or connector details differ from the current drawing.
- Temporary support or protected assembly positions cannot be maintained.
- An unplanned stockpile, existing-floor cut or change to opening protection is requested.
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
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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
- Which members and connections complete the opening’s redistributed load path?
- How are the header and trimmer assembly supported before all connections are complete?
- What protection permits each work position and the later decking handover?
Training and qualifications to confirm
- The actual interconnected header, trimmer, joist and temporary-support sequence and its loading-release criteria.
- Applicable fall-protection and rescue training, controlled member handling and the selected fastening tools.
Confirm the actual training evidence for the assigned people. A toolbox talk does not establish competence.
Decisions that change the plan
Can the crew cut an opening into an already loaded floor using this sequence?
No. This new-construction example begins before decking and uses a designed opening frame. An existing-floor alteration requires its own survey, load control, temporary support and released removal plan.
What must the crew record for actual use?
Identify the actual equipment and work boundaries, responsible people, applicable criteria, inspection findings and open actions. Resolve changes with affected crews and obtain required project authorization before work.
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.
Fall Prevention: Verify the Controls →Line of Fire: Swing Radius & Suspended Loads →Powered Tools: Check the Tool, Guard and Accessory →
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. Release the opening frame
Hazard: Missing support or a substituted header can leave interrupted joists without a load path.
Control: Framing lead checks the opening layout, member schedule, bearings and connection sequence against current documents. Identify temporary support and loading restrictions; hold work for conflicting dimensions or an unresolved hanger or trimmer detail.
Verification: Lead compares all opening members and supports with the released drawing.
Why this belongs in the analysis: A floor opening changes several connected members rather than one hole in a joist.
2. Protect the assembly area
Hazard: Workers or tools can fall through the developing opening or incomplete joist lines.
Control: Provide the planned protected platforms or conventional fall-protection arrangement and practicable rescue. Separate work below and retain suitable guarded or covered access where the sequence permits; do not treat a loose member as a walkway.
Verification: Access lead checks every proposed receiving and fastening position.
Why this belongs in the analysis: The opening remains an exposure before any deck is installed.
3. Stage and restrain the members
Hazard: Long stock can roll, strike a helper or overload an incomplete bay.
Control: Use the released handling method and landing locations for identified headers, trimmers and joists. Support and restrain members in their installation orientation, keep workers clear of movement and avoid stockpiling on an unaccepted frame.
Verification: Movement lead checks material locations and planned supports before transfer.
Why this belongs in the analysis: The surrounding frame’s incomplete state controls where materials may land.
4. Assemble headers and trimmers
Hazard: A partially connected header can drop or rotate as a receiving joint closes.
Control: Follow the drawing’s interconnected assembly sequence with the specified temporary support. Use positioning tools and safe hand locations, complete required initial connections and keep support until the designated release; do not alter a hanger or bearing to force fit.
Verification: Framing lead checks seating and connection progress at the planned hold points.
Why this belongs in the analysis: Both the carried member and its supporting trimmer need verified restraint.
5. Connect interrupted joists and restraint
Hazard: An omitted fastener or unrestrained assembly can fail during decking or construction loading.
Control: Install the identified joists, compatible connectors and specified restraint with all required fasteners. Maintain protected positions and temporary support while the complete load path is reviewed; no universal hanger fastening pattern substitutes for the actual detail.
Verification: Lead records actual bearing, connector and restraint findings against the drawing.
Why this belongs in the analysis: The opening frame functions as a connected assembly, not isolated pieces.
6. Hand over the opening and load limits
Hazard: Decking crews may remove protection or load a frame whose connections remain incomplete.
Control: Retain required opening protection, identify unfinished connections and transfer permitted landing and loading locations. Obtain the designated frame release before decking begins; later stair installation or guard changes require their own coordinated handover.
Verification: Receiving lead confirms frame status and the continuing opening-control method.
Why this belongs in the analysis: Structural acceptance and safe opening access are separate handover duties.
Compare control wording
| Needs improvement | More useful for this scenario |
|---|---|
| Work carefully and wear PPE. | Use the released handling method and landing locations for identified headers, trimmers and joists. Support and restrain members in their installation orientation, keep workers clear of movement and avoid stockpiling on an unaccepted frame. |
| Check that everything is ready. | Framing lead checks the opening layout, member schedule, bearings and connection sequence against current documents. Identify temporary support and loading restrictions; hold work for conflicting dimensions or an unresolved hanger or trimmer detail. |
Common questions
Can this example be used as a JSA?
Adapt its Task | Hazard | Control analysis to the employer’s format and actual conditions. The example is a teaching aid, not evidence that controls were checked.
What changes if the project requires an AHA?
Use the governing AHA format, risk method, supporting records and acceptance process. The published formwork AHA demonstrates that additional structure; changing a JHA title does not supply it.
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
- Simpson Strong-Tie Product installer guide
- OSHA 1926.501 Duty to have fall protection
- OSHA 1926.21 Safety training and education
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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