Manufactured Scuppers AHA (Activity Hazard Analysis / Job Hazard Analysis)
Updated 2026-06-23
A Manufactured Scuppers AHA (Activity Hazard Analysis / Job Hazard Analysis) is the plan that keeps the crew installing manufactured scuppers safe from the at-height roof-edge and opening fall, from the sharp metal-edge and handling, and around the fastening, sealing, and soldering. Manufactured scuppers installs prefabricated roof scuppers — combining the at-height-roof-edge and opening-fall hazard, the sharp-metal-edge and handling hazard, and the fastening-sealing and soldering hazard. This guide walks through building a Manufactured Scuppers AHA that names the at-height-roof-edge/opening-fall, sharp-metal-edge/handling, and fastening-sealing/soldering hazards and assigns the fall, cut/handling, and fastening/soldering controls that hold up in the field.
Why manufactured scuppers needs its own AHA
Manufactured scuppers is the installation of prefabricated roof scuppers — the manufactured scuppers (factory-made sheet-metal scupper boxes/through-wall drains that let water drain off the roof through the parapet/edge). This continues the roof-accessories group, focused on scuppers. The defining feature is that scuppers are installed at the roof edge/parapet — the most exposed fall location — and at an opening through the parapet/edge (a fall and fall-through hazard), and the scuppers are sheet-metal items (sharp edges, handling) that are fastened, sealed, and often soldered (metal scupper boxes are frequently soldered watertight). The hazards combine the at-height-roof- edge and opening-fall (working at the roof edge/parapet opening — the fall and fall-through hazards), the sharp- metal-edge and handling (the sharp metal scupper edges and handling — the cut and handling hazards), the fastening- sealing and soldering (fastening, sealing, and soldering the scuppers — the fastening, sealant, and soldering-burn hazards), and the eye. The at-height-roof-edge/opening-fall and the sharp-metal-edge/handling justify a dedicated AHA.
Breaking manufactured scuppers into steps
The steps for a Manufactured Scuppers AHA follow the work:
- Assess the roof edge/parapet and the scupper opening
- Set up roof-edge and opening fall protection
- Handle and position the scupper (sharp edges)
- Fasten the scupper
- Seal and solder the scupper watertight
- Manage the fall, cut, and soldering hazards
- Complete
Each step carries a hazard, and the at-height-roof-edge/opening-fall, the sharp-metal-edge/handling, and the fastening-sealing/soldering are where the most significant risks concentrate.
The hazards step by step
At-height-roof-edge and opening-fall
Working at the roof edge/parapet opening — the fall and fall-through hazards. The controls are roof-edge and opening fall protection (manufactured scuppers are installed at the roof edge/parapet — the most exposed fall location — and at an opening through the parapet/edge (a fall-through hazard through the scupper opening, and the worker is working right at the edge), so fall protection at the roof edge (guardrails, personal fall arrest) is especially critical, opening protection at the scupper penetration, and safe access), and the fall/opening controls. The at- height-roof-edge/opening-fall is the primary defining hazard — scupper work is at the roof edge, the most exposed fall location, at an opening. (These follow the roof-fall and opening-protection fundamentals.)
Sharp-metal-edge and handling
The sharp metal scupper edges and handling — the cut and handling hazards. The controls are sharp-metal-edge and handling controls (the manufactured scuppers are sheet-metal items with sharp cut edges (a laceration hazard — cut- resistant gloves and careful handling), and handling the scuppers (controlled handling at the edge)), and the cut/ handling controls. The sharp-metal-edge/handling is a defining hazard — the metal scuppers have sharp edges. (These follow the sharp-edge and material-handling fundamentals.)
Fastening-sealing and soldering
Fastening, sealing, and soldering the scuppers — the fastening, sealant, and soldering-burn hazards. The controls are fastening-sealing and soldering controls (fastening the scupper (fastening tools), sealing it watertight (sealants — the sealant-chemical hazard), and soldering the metal scupper box watertight (soldering irons/torches and molten solder — the hot-soldering burn hazard, the flux fumes, and, where a torch is used, the open-flame fire hazard — so burn protection, flux-fume ventilation, and fire protection for torch soldering)), and the fastening/ soldering controls. The fastening-sealing/soldering is a defining hazard — scuppers are often soldered watertight. (These follow the fastening and soldering fundamentals.)
Eye
The eye (soldering, cutting, sealants) carries the eye hazard. The controls are eye protection (soldering splatter/ flux, any cutting, and sealant splash), and the eye controls. (These follow the eye-protection fundamentals.)
A simple Manufactured Scuppers AHA structure
| Step | Hazard | Control | Standard |
|---|---|---|---|
| Assess | Fall / opening | Assess the roof edge/parapet and the scupper opening | project |
| Fall protection | Fall / opening | Set up roof-edge and opening fall protection | OSHA 1926.501 |
| Handle | Sharp edge | Handle and position the scupper (sharp edges) | project |
| Fasten | Fastening | Fasten the scupper | OSHA 1926.302 |
| Seal/solder | Burn / fire | Seal and solder the scupper watertight | OSHA 1926.352 |
| Manage | Fall / cut | Manage the fall, cut, and soldering hazards | project |
Roof-edge/opening fall protection and sharp-metal-edge/handling control
A Manufactured Scuppers AHA centers on roof-edge/opening fall protection and sharp-metal-edge/handling control. The roof-edge/opening fall protection addresses the at-height edge/opening work — controlled by roof-edge and opening fall protection (edge protection, opening protection at the scupper, safe access). The sharp-metal-edge/handling control addresses the metal scuppers — controlled by sharp-metal-edge and handling controls (cut-resistant gloves, controlled handling). And the fastening, sealing, soldering, and eye get fastening/soldering and eye controls. An AHA built on roof-edge/opening fall protection and sharp-metal-edge/handling control, with fastening/soldering controls, addresses the hazards that define manufactured scuppers.
From the field: what actually goes wrong
In fourteen years across federal, heavy civil, and industrial projects, manufactured scuppers installs the factory- made sheet-metal scupper boxes and through-wall drains that let water drain off the roof through the parapet/edge, and its defining hazards flow from the edge location. The at-height-roof-edge and opening-fall hazard is a primary defining concern — manufactured scuppers are installed at the roof edge/parapet, the most exposed fall location, and at an opening through the parapet/edge (a fall-through hazard through the scupper opening, and the worker is working right at the edge), so fall protection at the roof edge (guardrails, personal fall arrest) is especially critical, along with opening protection at the scupper penetration and safe access. The at-height edge/opening work is the defining hazard.
The sharp-metal-edge/handling and the fastening-sealing/soldering are the other defining hazards. On the projects I have run, the manufactured scuppers are sheet-metal items with sharp cut edges (a laceration hazard — cut- resistant gloves and careful handling), and handling them at the edge needs control. And the fastening-sealing/ soldering hazard is fastening the scupper (fastening tools), sealing it watertight (sealant-chemical), and soldering the metal scupper box watertight (soldering irons or torches and molten solder — the hot-soldering burn hazard, the flux fumes, and, where a torch is used, the open-flame fire hazard), so burn protection, flux-fume ventilation, and fire protection for torch soldering matter. The eye hazard rounds it out. The AHA built on roof- edge/opening fall protection and sharp-metal-edge/handling control is the one that protects the scupper crew.
The bottom line
A Manufactured Scuppers AHA names the at-height-roof-edge/opening-fall, the sharp-metal-edge/handling, and the fastening-sealing/soldering hazards with specific controls — roof-edge and opening fall protection (edge protection, opening protection at the scupper, safe access), sharp-metal-edge and handling controls (cut-resistant gloves, controlled handling), and fastening-sealing and soldering controls (safe fastening, sealant-chemical safety, soldering burn protection, flux-fume ventilation, torch-soldering fire protection). The roof-edge/opening fall protection and the sharp-metal-edge/handling control are the defining concerns. The AHA that manages both is the one that protects the crew.
Frequently asked questions
Why is the roof-edge/opening fall the defining hazard?
Manufactured scuppers are installed at the roof edge/parapet, the most exposed fall location, and at an opening through the parapet/edge (a fall-through hazard through the scupper opening, with the worker right at the edge). Controls are roof-edge and opening fall protection (fall protection at the roof edge — guardrails, personal fall arrest; opening protection at the scupper penetration; safe access), and the fall/opening controls.
What sharp-edge and handling hazards apply?
The manufactured scuppers are sheet-metal items with sharp cut edges (a laceration hazard), handled at the edge. Controls are sharp-metal-edge and handling controls (cut-resistant gloves and careful handling, controlled handling), and the cut/handling controls.
What fastening, sealing, and soldering hazards apply?
Fastening the scupper (fastening tools), sealing it watertight (sealants), and soldering the metal scupper box watertight (soldering irons/torches and molten solder — the hot-soldering burn hazard, flux fumes, and open-flame fire hazard where a torch is used). Controls are fastening-sealing and soldering controls (safe fastening, sealant-chemical safety, soldering burn protection, flux-fume ventilation, torch-soldering fire protection), and the fastening/soldering controls.
What is manufactured scuppers?
Manufactured scuppers is the installation of prefabricated roof scuppers — the manufactured scuppers (factory-made sheet-metal scupper boxes/through-wall drains that let water drain off the roof through the parapet/edge). Because the work is at the exposed roof edge/parapet at an opening (fall and fall-through), the metal scuppers have sharp edges, and they are fastened, sealed, and often soldered watertight, those hazards apply.
Related AHAs and JHAs
- Roof Accessories AHA — the roof accessories
- Manufactured Roof Expansion Joints AHA — the related manufactured roof joints
- Sheet Metal and Flashing Trim AHA — the related sheet-metal work
- Roof Flashing Installation JHA — the roof-flashing fundamentals
Written by Mustafa Tok, CSP, ASP, CHST — OSHA Authorized Outreach Trainer with 14+ years of international construction safety experience across federal, heavy civil, and industrial projects.