JHA / JSA / AHA builderSolid Sawn Roof Rafter Installation 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 Solid Sawn Roof Rafter Installation 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 rafter sequence
Possible hazards: An unsupported ridge or incomplete wall restraint can lead to roof-frame collapse.
Planned controls: Framing lead verifies the receiving frame, rafter identification, bearing cuts and specified ties against current documents. Establish the temporary restraint sequence and hold work for any missing support or conflicting detail.
Check before work: Lead compares the bay and rafter marks with the released framing plan.
022. Establish protected receiving positions
Possible hazards: Open frame gaps and roof edges can expose workers to falls before a walking surface exists.
Planned controls: Provide protected platforms or the selected conventional fall-protection arrangement, suitable anchors and practicable rescue. Keep the area below excluded and maintain protected access; do not rely on balancing on an unrestrained rafter.
Check before work: Access lead checks the changing work positions before material transfer.
033. Transfer one prepared rafter
Possible hazards: A long member can swing into a worker, overload an access point or become wind driven.
Planned controls: Use the released mechanical transfer and receiving method with agreed signals. Keep workers clear of the travel path and control the member from stable positions. Pause for wind or loss of control; do not carry long stock while climbing a ladder.
Check before work: Movement lead checks the transfer route and receiver readiness before each move.
044. Seat and secure the member
Possible hazards: The rafter can slip at a bearing or trap fingers during alignment.
Planned controls: Position onto the specified ridge and wall bearings while retaining the planned support. Use suitable alignment tools and keep hands out of bearing pinch points. Complete the specified initial securing before handling support is removed.
Check before work: Framing lead checks both seating locations and initial restraint.
055. Complete ties and temporary restraint
Possible hazards: An untied pair or unfinished restraint can spread, roll or fail under later work.
Planned controls: Install the specified rafter ties, connectors and temporary restraint in the released sequence with the required fasteners. Keep prohibited loading off incomplete bays and retain temporary support until its designated release conditions are satisfied.
Check before work: Lead checks connections and restraint before progressing to the next stage.
066. Release the frame for sheathing
Possible hazards: Another crew can assume an incomplete roof is ready for panel loading.
Planned controls: Record completed bays, unfinished connections and permitted material loads. Keep edge and opening protection and necessary restraint in place; transfer the actual frame release to the sheathing lead before panels are delivered.
Check before work: Receiving lead confirms frame readiness and remaining restrictions.
Example scope and starting conditions
A framing crew will place and fasten precut individual solid-sawn rafters on a released low-rise roof frame using planned mechanical material transfer and protected receiving access. Sheathing starts under a separate release. This fictional learning example describes planned controls; it records no actual inspection or work authorization.
- Ridge, wall plates, bearing cuts, ties and temporary restraint follow the current framing design; no field design is supplied.
- Conventional fall protection, protected access and rescue arrangements remain in place as the incomplete roof advances.
- This excludes prefabricated trusses, roof sheathing, on-roof cutting and carrying rafters up an access ladder.
Know when to pause
- Receiving supports, bearing cuts or specified ties differ from the design.
- Wind, unstable footing or lost fall protection interrupts the receiving operation.
- Temporary restraint or the sheathing handover cannot be verified.
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.
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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 ridge and wall support arrangement for this sequence?
- How will each rafter remain restrained until the specified ties and connections are complete?
- How does fall protection remain usable as the work position changes?
Training and qualifications to confirm
- The actual solid-sawn rafter sequence, bearing checks, connection details and temporary-restraint handover.
- Applicable fall-protection and rescue training, material-transfer communication and fastening-tool instruction.
Confirm the actual training evidence for the assigned people. A toolbox talk does not establish competence.
Decisions that change the plan
Is the roof-truss example a substitute for this rafter sequence?
No. A truss is an engineered assembly with its own handling and bracing instructions. These individual rafters rely on the released ridge, wall, tie and connector details; the example provides no alternative roof design.
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 rafter sequence
Hazard: An unsupported ridge or incomplete wall restraint can lead to roof-frame collapse.
Control: Framing lead verifies the receiving frame, rafter identification, bearing cuts and specified ties against current documents. Establish the temporary restraint sequence and hold work for any missing support or conflicting detail.
Verification: Lead compares the bay and rafter marks with the released framing plan.
Why this belongs in the analysis: Individual rafters do not inherit a prefabricated truss bracing scheme.
2. Establish protected receiving positions
Hazard: Open frame gaps and roof edges can expose workers to falls before a walking surface exists.
Control: Provide protected platforms or the selected conventional fall-protection arrangement, suitable anchors and practicable rescue. Keep the area below excluded and maintain protected access; do not rely on balancing on an unrestrained rafter.
Verification: Access lead checks the changing work positions before material transfer.
Why this belongs in the analysis: Fall protection must work during erection, before sheathing provides a surface.
3. Transfer one prepared rafter
Hazard: A long member can swing into a worker, overload an access point or become wind driven.
Control: Use the released mechanical transfer and receiving method with agreed signals. Keep workers clear of the travel path and control the member from stable positions. Pause for wind or loss of control; do not carry long stock while climbing a ladder.
Verification: Movement lead checks the transfer route and receiver readiness before each move.
Why this belongs in the analysis: Material transfer and worker access need separate safe routes.
4. Seat and secure the member
Hazard: The rafter can slip at a bearing or trap fingers during alignment.
Control: Position onto the specified ridge and wall bearings while retaining the planned support. Use suitable alignment tools and keep hands out of bearing pinch points. Complete the specified initial securing before handling support is removed.
Verification: Framing lead checks both seating locations and initial restraint.
Why this belongs in the analysis: A correctly cut rafter still needs secure installation at both ends.
5. Complete ties and temporary restraint
Hazard: An untied pair or unfinished restraint can spread, roll or fail under later work.
Control: Install the specified rafter ties, connectors and temporary restraint in the released sequence with the required fasteners. Keep prohibited loading off incomplete bays and retain temporary support until its designated release conditions are satisfied.
Verification: Lead checks connections and restraint before progressing to the next stage.
Why this belongs in the analysis: The design determines which members complete the roof load path.
6. Release the frame for sheathing
Hazard: Another crew can assume an incomplete roof is ready for panel loading.
Control: Record completed bays, unfinished connections and permitted material loads. Keep edge and opening protection and necessary restraint in place; transfer the actual frame release to the sheathing lead before panels are delivered.
Verification: Receiving lead confirms frame readiness and remaining restrictions.
Why this belongs in the analysis: Rafter erection and sheathing installation have different loading and access stages.
Compare control wording
| Needs improvement | More useful for this scenario |
|---|---|
| Work carefully and wear PPE. | Use the released mechanical transfer and receiving method with agreed signals. Keep workers clear of the travel path and control the member from stable positions. Pause for wind or loss of control; do not carry long stock while climbing a ladder. |
| Check that everything is ready. | Framing lead verifies the receiving frame, rafter identification, bearing cuts and specified ties against current documents. Establish the temporary restraint sequence and hold work for any missing support or conflicting 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 1926.503 Fall protection training
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. 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 9, 2026
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