A useful quotation starts with more than overall height. The supplier needs the climbing height, clear ladder width, mounting surface, bracket stand-off, top-exit geometry and available installation space. Photos help, but a dimensioned sketch is more reliable for confirming how the ladder connects to the structure.
Minimum measurement checklist
| Measurement | What to show |
|---|---|
| Floor-to-exit height | Finished lower level to the safe upper landing. |
| Wall or tank stand-off | Distance from mounting surface to ladder side rails. |
| Available width | Clear space for the ladder, cage and nearby services. |
| Top landing detail | Parapet, hatch, platform edge and guardrail position. |
| Bracket locations | Structural areas where fixings are permitted. |
How to prepare a simple site sketch
Draw one front view and one side view. Mark the lower starting level, upper landing, obstructions, nearby pipes, doors and electrical equipment. Identify the supporting material and note whether anchors, welded plates or bolted brackets are expected.
Why site photos are not enough
Perspective can hide clearances and distort scale. Include a tape measure or marked reference, but do not rely on image proportions for fabrication. Final dimensions should come from a drawing approved by the project team.
Common measurement errors
- Measuring to the roof surface but not the final exit position.
- Omitting insulation or cladding thickness.
- Ignoring nearby pipework and opening doors.
- Not identifying suitable structural fixing points.
- Using estimated dimensions for fabrication.
Frequently asked questions
Can you quote from photos?
A preliminary discussion is possible, but confirmed dimensions are required before production.
Do you need CAD files?
CAD is helpful, although a clear dimensioned PDF or sketch can start the review.
Should transport limits be included?
Yes. State container, doorway, crane and site handling restrictions.
Who approves final dimensions?
The buyer or project engineer should approve the fabrication drawing.
Can brackets be adjusted?
Bracket design can be customized after the supporting structure is confirmed.
Send your dimensions and drawing for a project-specific review.