JHA / JSA / AHA builderMasonry Wind Shutdown and Controlled Reentry 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 Masonry Wind Shutdown and Controlled Reentry 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 current wall-stage response plan
Possible hazards: Using an obsolete wall stage or general wind limit can delay withdrawal from collapse exposure.
Planned controls: Supervisor checks actual geometry, age, mortar/grout condition and installed supports against the accepted stability plan. Confirm the applicable monitoring, warning/withdrawal and reentry criteria, responsible decision maker and contingency for lost readings. Resolve changes with the engineer; never substitute a universal wind speed or braced-wall assumption.
Check before work: Supervisor records the governing stage, criteria and any unresolved change requiring a work hold.
022. Verify zones, routes and communication readiness
Possible hazards: A warning is ineffective if people are trapped near the wall or another crew enters its fall area.
Planned controls: Establish the plan’s restricted exposure zones on both sides and at affected ends, coordinating adjacent trades and public access. Maintain applicable OSHA limited-access controls without treating them as the complete wind-response boundary. Walk withdrawal/assembly routes, test alerts and name those responsible for accountability and access control.
Check before work: Lead confirms each affected crew understands the signal, route, assembly point and zone restrictions.
033. Monitor and issue the early warning
Possible hazards: Unobserved gusts, failed readings or delayed decisions can leave workers beside a vulnerable wall.
Planned controls: Use the actual plan’s accepted measurement location, equipment and reading method, including the required treatment of gusts and forecast changes. Keep the monitor available and able to communicate with the decision maker. Issue the specified early warning while the planned withdrawal margin remains. Pause affected work if reliable monitoring or communications are lost rather than estimating safe conditions.
Check before work: Monitor records readings/alerts and supervisor confirms that the warning reaches all affected workers.
044. Withdraw and close the affected area
Possible hazards: Trying to finish a lift or add a brace after the trigger can prolong collapse exposure.
Planned controls: At the plan’s withdrawal trigger, stop affected tasks and leave by the agreed safe routes. Complete only preplanned safe actions permitted by the response sequence; do not approach the wall to retrieve tools or improvise extra restraint. Account for every affected worker at the safe assembly point, close zone access and escalate missing-person information through the emergency plan without unplanned entry.
Check before work: Supervisor confirms accountability and access closure from positions outside the assessed exposure.
055. Assess the event before any inspection entry
Possible hazards: Calmer wind can hide cracked masonry, shifted braces or damaged anchors that remain unstable.
Planned controls: Retain closure while the authorized lead reviews event records and remotely observable changes from safe positions. Report movement, cracking, impact or damaged restraints to the engineer. Establish whether a separate inspection can safely proceed and what protective arrangement it needs. No one enters an unresolved collapse zone or adjusts restraint under this example; inspection access requires its own accepted authorization.
Check before work: Lead records remote findings and the separate inspection-access decision before any zone entry.
066. Release reentry and transfer the work state
Possible hazards: Premature restart or a stale plan can expose workers to a changed wall or the next gust.
Planned controls: Reopen affected access only after the required post-event inspection, engineering dispositions and project reentry acceptance are recorded. Update stage, monitoring criteria and restrictions to the accepted condition. Brief affected crews before they return and retain any held areas. Transfer findings and monitoring duties to the next supervisor; production resumes under its separate task plan.
Check before work: Supervisor records who authorized reentry, its evidence and the communicated restart restrictions.
Example scope and starting conditions
A masonry supervisor will manage a planned wind event affecting one incomplete wall under an already accepted construction-stage stability plan. The cycle covers monitoring, early warning, orderly withdrawal, accountability, restricted closure and controlled post-event assessment/reentry. It starts with accepted wall restraint and ends with a documented work-state handover before unit laying resumes. This fictional learning example describes planned controls; it records no actual inspection or work authorization.
- The actual engineer’s stability plan identifies current wall stage/age, supports, monitoring method, warning/withdrawal criteria, restricted zones and separate inspection/reentry requirements.
- Designated monitoring and communication roles, clear escape routes and assembly location are outside the assessed collapse exposure; crews understand how to withdraw without approaching the wall.
- Partial high-wind masonry connection only: no unit laying, brace installation/adjustment/removal, emergency entry, rescue in an unstable zone or assumption that calmer weather alone releases work.
Know when to pause
- Wall stage/support differs from the accepted plan, required criteria are missing or monitoring/communications become unreliable.
- A warning/withdrawal trigger is reached, an unsafe gust trend is observed or zone access/accountability cannot be maintained.
- Movement, cracking or support damage is observed, inspection entry lacks separate acceptance or restart is proposed solely because wind has fallen.
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
- Which current wall stage and support condition govern today’s monitoring and evacuation criteria?
- Can every affected crew receive the warning and reach the agreed safe assembly point before exposure increases?
- Who can authorize post-event inspection and reentry, and what evidence is required beyond falling wind speed?
Training and qualifications to confirm
- Project wind-monitoring and shutdown instruction covering actual gust criteria, early-warning lead time, signals, escape routes and accountability.
- Masonry instability recognition, restricted-zone discipline, remote post-event reporting and the separate authorization process for inspection and return.
Confirm the actual training evidence for the assigned people. A toolbox talk does not establish competence.
Decisions that change the plan
Does this duplicate the masonry-bracing resource?
That resource installs the restraint system under the accepted wall sequence. This cycle starts with installed restraint and manages a specific wind event through monitoring, warning, withdrawal, accountability, closure and documented return. It does not install or repair braces and never authorizes approaching an unresolved unstable wall.
What must the crew record for actual use?
Record the work boundary, design/equipment documents, responsible people, acceptance criteria, control findings and unresolved actions. Communicate restrictions and obtain required project authorization. This learning example supplies no evidence that a control was installed or accepted.
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.
Masonry Walls: Verify Bracing and Restricted Access →Emergency Evacuation: Know the Route and Count the Crew →After the Storm: Verify Before Reentry →
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 current wall-stage response plan
Hazard: Using an obsolete wall stage or general wind limit can delay withdrawal from collapse exposure.
Control: Supervisor checks actual geometry, age, mortar/grout condition and installed supports against the accepted stability plan. Confirm the applicable monitoring, warning/withdrawal and reentry criteria, responsible decision maker and contingency for lost readings. Resolve changes with the engineer; never substitute a universal wind speed or braced-wall assumption.
Verification: Supervisor records the governing stage, criteria and any unresolved change requiring a work hold.
Why this belongs in the analysis: Wind resistance changes as masonry cures and support conditions develop.
2. Verify zones, routes and communication readiness
Hazard: A warning is ineffective if people are trapped near the wall or another crew enters its fall area.
Control: Establish the plan’s restricted exposure zones on both sides and at affected ends, coordinating adjacent trades and public access. Maintain applicable OSHA limited-access controls without treating them as the complete wind-response boundary. Walk withdrawal/assembly routes, test alerts and name those responsible for accountability and access control.
Verification: Lead confirms each affected crew understands the signal, route, assembly point and zone restrictions.
Why this belongs in the analysis: The unscaffolded-side access rule and an engineered wind-exposure zone serve different purposes.
3. Monitor and issue the early warning
Hazard: Unobserved gusts, failed readings or delayed decisions can leave workers beside a vulnerable wall.
Control: Use the actual plan’s accepted measurement location, equipment and reading method, including the required treatment of gusts and forecast changes. Keep the monitor available and able to communicate with the decision maker. Issue the specified early warning while the planned withdrawal margin remains. Pause affected work if reliable monitoring or communications are lost rather than estimating safe conditions.
Verification: Monitor records readings/alerts and supervisor confirms that the warning reaches all affected workers.
Why this belongs in the analysis: A forecast supports preparation; it does not replace accepted site monitoring.
4. Withdraw and close the affected area
Hazard: Trying to finish a lift or add a brace after the trigger can prolong collapse exposure.
Control: At the plan’s withdrawal trigger, stop affected tasks and leave by the agreed safe routes. Complete only preplanned safe actions permitted by the response sequence; do not approach the wall to retrieve tools or improvise extra restraint. Account for every affected worker at the safe assembly point, close zone access and escalate missing-person information through the emergency plan without unplanned entry.
Verification: Supervisor confirms accountability and access closure from positions outside the assessed exposure.
Why this belongs in the analysis: Shutdown protects people by withdrawal, not by last-minute work beside the wall.
5. Assess the event before any inspection entry
Hazard: Calmer wind can hide cracked masonry, shifted braces or damaged anchors that remain unstable.
Control: Retain closure while the authorized lead reviews event records and remotely observable changes from safe positions. Report movement, cracking, impact or damaged restraints to the engineer. Establish whether a separate inspection can safely proceed and what protective arrangement it needs. No one enters an unresolved collapse zone or adjusts restraint under this example; inspection access requires its own accepted authorization.
Verification: Lead records remote findings and the separate inspection-access decision before any zone entry.
Why this belongs in the analysis: Reduced wind removes one load condition; it does not repair event damage.
6. Release reentry and transfer the work state
Hazard: Premature restart or a stale plan can expose workers to a changed wall or the next gust.
Control: Reopen affected access only after the required post-event inspection, engineering dispositions and project reentry acceptance are recorded. Update stage, monitoring criteria and restrictions to the accepted condition. Brief affected crews before they return and retain any held areas. Transfer findings and monitoring duties to the next supervisor; production resumes under its separate task plan.
Verification: Supervisor records who authorized reentry, its evidence and the communicated restart restrictions.
Why this belongs in the analysis: A documented controlled return closes the event-response cycle.
Compare control wording
| Needs improvement | More useful for this scenario |
|---|---|
| The wall has braces, so keep working until the usual wind number. | Use the current wall-stage plan’s actual monitoring and early-warning/withdrawal criteria; leave by the agreed routes while the response margin remains. |
| The wind has stopped; reopen the barricade. | Retain closure, review the event remotely, obtain safe inspection access separately and record the required post-event and reentry acceptance before return. |
Common questions
Can this example be used as a JSA?
Adapt the Task | Hazard | Control sequence to the employer’s JSA and actual worksite. Name the control checkers and record findings; this fictional example supplies no completed inspection or authorization.
What changes if the project requires an AHA?
Use the governing AHA format, risk method, records and acceptance process. The published formwork AHA illustrates that structure. Add actual competencies, inspections and project reviews; renaming a JHA does not complete those requirements.
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
- CMHA TEK 03-04C Bracing Concrete Masonry Walls Under Construction
- CMHA TEK 03-01C All-Weather Concrete Masonry Construction
- OSHA 1926.706 Requirements for masonry construction
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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