First, describe the work and worksite
A trained setup crew installs, accepts and later dismantles one identified gravity roofing-debris chute with its manufacturer roof-support and assembly-hoist system. The roof support design and building capacity are accepted. The chute will discharge into a controlled container area; actual roof stripping begins only after the setup handoff. This fictional learning example describes planned controls; it records no actual inspection or work authorization.
- Partial roofing debris and demobilization coverage: support, hopper and chute assembly, acceptance and controlled dismantling; no powered material-hoist installation.
- Compatible chute sections, connecting hardware, hopper, support and assembly hoist are identified; current manuals and the support/loading design govern the configuration.
- Protected roof work positions, approved fall-protection anchors, ground exclusion, electrical clearance and a suitable receiving-container arrangement are established.
Questions before work
- Who accepts roof capacity, support restraint, the complete hanging load and installation geometry?
- How will sections remain positively supported while connections are made and later released?
- What controlled method applies if the chute becomes obstructed or must be dismantled with debris present?
Build the analysis one step at a time
What will the worker do? How could someone be harmed? What prevents or reduces that exposure? Who checks the control, and when?
1. Accept the complete chute and support design
Hazard: An assumed parapet support or overloaded roof can fail under the hanging system.
Control: Identify the complete manufacturer configuration and accepted building-support design. Confirm support capacity, restraint, geometry, chute load and assembly sequence; resolve missing information before bringing parts onto the roof.
Verification: Setup lead records design acceptance, component identity and the applicable manuals.
Why this belongs in the analysis: A chute’s self-weight and debris demand must reach an accepted building load path.
2. Establish the protected assembly and discharge areas
Hazard: Workers can fall at the hopper position or be struck beneath the descending system.
Control: Protect roof access and the assembly position with the accepted worker system. Close the full area below and the discharge zone, position the receiving container and verify nearby services and electrical clearance before rigging components.
Verification: Competent person checks roof protection and uninterrupted lower-area closure before assembly.
Why this belongs in the analysis: A container boundary alone does not protect the full area beneath an assembling chute.
3. Install the support and assembly equipment
Hazard: Incorrect restraint or incompatible hoisting parts can drop the suspended chute sections.
Control: Fit the roof support and identified assembly hoist to the accepted design and manuals from protected positions. Verify connections, restraint and equipment condition, using no substitute counterweights, anchors or improvised lifting components.
Verification: Installer records support and hoist acceptance before loading the first hanging section.
Why this belongs in the analysis: The assembly device and chute support are a coordinated system, not interchangeable roof hardware.
4. Assemble and secure the chute sections
Hazard: A section can fall or pinch hands as connecting hardware takes load.
Control: Follow the specific section assembly and lifting sequence. Maintain positive support, complete the specified connections and restraints, keep hands out of load-transfer gaps and control movement until the hopper and discharge arrangement are secured.
Verification: Lead checks every section connection and the completed hanging configuration before releasing assembly support.
Why this belongs in the analysis: The crew must know which component carries the load before releasing a connection or lifting aid.
5. Accept and hand over the gravity disposal system
Hazard: An unguarded hopper, unsuitable debris or blockage can expose users and overload the chute.
Control: Inspect the completed support, chute, hopper guarding, required discharge-gate controls and discharge geometry against the accepted design and applicable requirements. Give users the actual material, load, inspection and stop limits; prohibit entry or reaching into an obstructed chute and require the accepted blockage-clearance procedure.
Verification: Setup lead and roofing supervisor document readiness, restrictions and the responsible inspection role.
Why this belongs in the analysis: Successful assembly does not authorize arbitrary debris size or an improvised clearing method.
6. Isolate use and dismantle with positive support
Hazard: Retained debris or an unsupported connection release can cause a falling section or uncontrolled load.
Control: Stop feeding and confirm the chute is empty by the accepted method. Reinstate the full closure, support each assembly in the instructed reverse sequence and lower components controllably. Keep designed counterweights and tiebacks until the chute is fully lowered; move the support frame clear of the edge before breaking down its guards. Restore roof protection.
Verification: Lead records empty-system acceptance, supported connection releases and final roof and ground condition.
Why this belongs in the analysis: A dismantling plan must control the hanging load before hardware is loosened.
What does a useful control look like?
| Needs improvement | More useful for this scenario |
|---|---|
| Work carefully and wear PPE. | Fit the roof support and identified assembly hoist to the accepted design and manuals from protected positions. Verify connections, restraint and equipment condition, using no substitute counterweights, anchors or improvised lifting components. |
| Check that everything is ready. | Identify the complete manufacturer configuration and accepted building-support design. Confirm support capacity, restraint, geometry, chute load and assembly sequence; resolve missing information before bringing parts onto the roof. |
Decisions that change the analysis
Does the earlier roofing tear-off example already install this chute?
No. It uses an accepted disposal route and does not design or assemble the hanging chute, roof support and hopper. This setup ends at a documented system handoff and resumes for controlled empty-system dismantling.
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.
Agree when the crew will pause
- Pause for missing roof-support acceptance, damaged or mismatched components or an ineffective exclusion area.
- Stop for movement, overloading, blockage or unsafe weather; keep people out of and beneath the chute.
- A loaded or damaged chute requires a separately accepted recovery method before any connection is released.
After a pause, correct the condition, reassess the work, and obtain required authorization before restarting. Keep unresolved actions visible.
Download the worked example and free 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.
Your editable working copy
Build and download your draft
Start blank or load the learning example. Replace its assumptions with your actual conditions and involve the people doing the work. Your entries stay in this browser tab; download a copy before leaving or refreshing.
1. Describe your work and site
2. Work through each task
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.
3. 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.
Open the downloaded file in a browser, then use Print → Save as PDF for a printable copy.
Training needs to confirm
- Verify trained setup and dismantling roles for the identified support, assembly hoist and gravity-chute system.
- Demonstrate positive support during connection release, hopper guarding, stop decisions and the accepted blockage and emergency arrangements.
Confirm applicable qualifications, task instruction and actual training evidence for the people assigned. Related toolbox talks support toolbox talks; they do not establish competence.
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
- Superchute Chute installation manual: compatible system and controlled assembly
- Superchute SC-605-cb roof support and assembly-hoist manual
- OSHA 1926.852 Chutes and disposal of debris
- OSHA 1926.501 Duty to have fall protection
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.