JHA / JSA / AHA builderMortar Set Glass Block Partition 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 Mortar Set Glass Block Partition 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 panel opening
Possible hazards: An unsuitable support or mismatched system can cause panel movement or breakage.
Planned controls: Masonry lead verifies the base and perimeter frame, actual block series and approved panel detail. Check that the selected mortar, reinforcement and retention components belong to that system; hold work for unknown limits or conflicting supports.
Check before work: Lead compares product identification and opening geometry with current instructions.
022. Handle and inspect the units
Possible hazards: Chipped edges, an unstable stack or a dropped block can cut hands and feet.
Planned controls: Stage secured packages within easy reach and inspect units before handling. Remove damaged blocks, use planned assistance for packages and assessed hand and eye protection, and keep both sides of the work bay closed to unrelated people.
Check before work: Material lead checks units, staging and the separation boundary.
033. Set the base course
Possible hazards: Wet mortar can burn skin and an unrestrained first course can shift.
Planned controls: Apply the specified base treatment and mortar from stable access using suitable tools. Set identified units and spacers under the system instructions, maintain supported alignment and keep mortar off skin. Do not improvise packing to compensate for an unreleased base.
Check before work: Masonry lead verifies the first course before the panel rises.
044. Build with reinforcing and retention
Possible hazards: Omitted or misplaced reinforcement and sharp metal ends can weaken the unfinished panel or injure hands.
Planned controls: Install the approved reinforcing and perimeter anchors in their prescribed locations without metal-to-glass contact. Embed components as specified and verify each concealed stage before continuing; keep hands clear of sharp ends and maintain temporary support if required.
Check before work: Lead checks component type, embedment and retention at the planned hold points.
055. Preserve perimeter accommodation
Possible hazards: Rigidly filling an intended movement space can load or crack the glass-block assembly.
Planned controls: Install the selected system’s expansion strips, clearances and perimeter finishing without substituting mortar for a specified movement space. Check the released detail at jambs and head before closing them, while keeping the unfinished panel protected from contact.
Check before work: Lead compares perimeter treatment with the actual system instructions.
066. Protect curing and hand over
Possible hazards: Early impact, cleaning or removal of support can disturb the panel before release.
Planned controls: Protect the work for the product’s required curing and acceptance stage. Use only the approved cleanup method, contain any broken units and transfer actual findings and remaining access restrictions. Remove temporary measures only at the designated release.
Check before work: Receiving lead confirms panel status before the bay is reopened.
Example scope and starting conditions
A masonry crew will install a small non-load-bearing interior glass-block partition on a released ground-floor base in a closed work bay. Factory-sized units are set in the specified mortar system with its approved perimeter accommodation, reinforcement and retention details. This fictional learning example describes planned controls; it records no actual inspection or work authorization.
- The opening, unit series, panel dimensions and supporting frame are released for the selected mortar installation system.
- Mortar is supplied from a separately controlled mixing station and all work remains reachable from the floor or a suitable protected low work platform.
- This excludes cutting glass blocks, mortarless systems, overhead glazing, structural glass walls and any unverified fire-resistance claim.
Know when to pause
- Block series, mortar system or supporting frame differs from the released detail.
- Units chip or the unfinished panel moves unexpectedly.
- Reinforcement, perimeter accommodation or curing protection cannot be maintained.
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 instructions and panel limits apply to the actual glass-block series and mortar system?
- Where do perimeter accommodation, reinforcing and retention differ from ordinary mortar joints?
- How will the unfinished panel remain protected until the specified curing and acceptance stage?
Training and qualifications to confirm
- The actual mortar glass-block assembly’s panel limits, reinforcement, perimeter accommodation and curing sequence.
- Wet-mortar and glass-unit handling instruction, damaged-unit controls and the selected access arrangement.
Confirm the actual training evidence for the assigned people. A toolbox talk does not establish competence.
Decisions that change the plan
Does an installed glass-block panel automatically provide a fire-rated partition?
No. A rating depends on the identified tested assembly, supporting conditions and approved installation. This example makes no fire-resistance or impact rating claim and cannot substitute for that evidence.
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.
Hand Protection: Match the Glove to the Task →Wet Concrete: Prevent Skin and Eye Contact →Manual Handling: Change the Lift Before You Lift →
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 panel opening
Hazard: An unsuitable support or mismatched system can cause panel movement or breakage.
Control: Masonry lead verifies the base and perimeter frame, actual block series and approved panel detail. Check that the selected mortar, reinforcement and retention components belong to that system; hold work for unknown limits or conflicting supports.
Verification: Lead compares product identification and opening geometry with current instructions.
Why this belongs in the analysis: A glass-block partition is an assembly rather than a stack of interchangeable units.
2. Handle and inspect the units
Hazard: Chipped edges, an unstable stack or a dropped block can cut hands and feet.
Control: Stage secured packages within easy reach and inspect units before handling. Remove damaged blocks, use planned assistance for packages and assessed hand and eye protection, and keep both sides of the work bay closed to unrelated people.
Verification: Material lead checks units, staging and the separation boundary.
Why this belongs in the analysis: Factory-sized units remove cutting here but do not remove handling hazards.
3. Set the base course
Hazard: Wet mortar can burn skin and an unrestrained first course can shift.
Control: Apply the specified base treatment and mortar from stable access using suitable tools. Set identified units and spacers under the system instructions, maintain supported alignment and keep mortar off skin. Do not improvise packing to compensate for an unreleased base.
Verification: Masonry lead verifies the first course before the panel rises.
Why this belongs in the analysis: The initial course establishes support and geometry for the whole panel.
4. Build with reinforcing and retention
Hazard: Omitted or misplaced reinforcement and sharp metal ends can weaken the unfinished panel or injure hands.
Control: Install the approved reinforcing and perimeter anchors in their prescribed locations without metal-to-glass contact. Embed components as specified and verify each concealed stage before continuing; keep hands clear of sharp ends and maintain temporary support if required.
Verification: Lead checks component type, embedment and retention at the planned hold points.
Why this belongs in the analysis: A neat joint does not reveal whether the concealed components are correct.
5. Preserve perimeter accommodation
Hazard: Rigidly filling an intended movement space can load or crack the glass-block assembly.
Control: Install the selected system’s expansion strips, clearances and perimeter finishing without substituting mortar for a specified movement space. Check the released detail at jambs and head before closing them, while keeping the unfinished panel protected from contact.
Verification: Lead compares perimeter treatment with the actual system instructions.
Why this belongs in the analysis: Ordinary masonry joint filling is not the rule for every panel edge.
6. Protect curing and hand over
Hazard: Early impact, cleaning or removal of support can disturb the panel before release.
Control: Protect the work for the product’s required curing and acceptance stage. Use only the approved cleanup method, contain any broken units and transfer actual findings and remaining access restrictions. Remove temporary measures only at the designated release.
Verification: Receiving lead confirms panel status before the bay is reopened.
Why this belongs in the analysis: A finished appearance supplies neither curing evidence nor a performance rating.
Compare control wording
| Needs improvement | More useful for this scenario |
|---|---|
| Work carefully and wear PPE. | Apply the specified base treatment and mortar from stable access using suitable tools. Set identified units and spacers under the system instructions, maintain supported alignment and keep mortar off skin. Do not improvise packing to compensate for an unreleased base. |
| Check that everything is ready. | Masonry lead verifies the base and perimeter frame, actual block series and approved panel detail. Check that the selected mortar, reinforcement and retention components belong to that system; hold work for unknown limits or conflicting supports. |
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
- Seves Glass Block Mortar installation system instructions
- OSHA 1926.706 Masonry construction
- 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. 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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