LadderCageCage Ladder Design & Details
Cage Ladder Details
Design and detail drawings for cage ladders — heights to 25 m, full dimensions. Free design review, fast turnaround; DoC and MTC included with design drawings.
Max Single-Run Height
Projects Delivered
Countries Exported
Quote Response
Design Capability
Cage Ladder Design – Heights to 25m Single-Run
From a single detail drawing to a full project set, our in-house design team engineers cage ladders to your exact site.
Heights to 25 m
Up to 25 m in a single run; multi-run systems with rest platforms beyond that.
Structural Calculation Sheet
Engineer-signed calcs (DT-LDR-CAL) included with the design set.
Custom Configurations
Custom widths, walk-throughs and side-step entries to your drawing.
Design & Detail Drawing Set
Design & Detail Drawing Set
Elevation, plan, section and detail views with complete dimensioning — rung spacing, clear width, cage hoops, flared entry and fixing details.
- Full Dimensioning
Every parameter called out for fabrication and inspection
- DWG / DXF / PDF
Delivery in the format your project team needs
- Made-to-Order
Designs matched to your height, loads and site conditions
| Specification | Value |
|---|---|
| Rung Diameter | Φ20 mm |
| Rung Spacing | 280 mm (≤300 mm) |
| Clear Width | 500 mm |
| Cage Diameter | Φ700 mm (hoops 40×5 @≤1500, straps 30×3) |
| Cage Start | 2.2 m above floor |
| Load Rating | 1.5 kN per rung |
| Max Height | 25 m single run |
| Entrance | Flared / flared splay entry |
Documents Included
DoC & MTC with Design Drawings
DoC Included
Declaration of Conformity to OSHA 1910.28 & EN ISO 14122-4 with the drawing set.
MTC 3.1 Material Certificate
EN 10204 3.1 material certificate for Q235B / SS304 / SS316.
Structural Calcs
Engineer-signed structural calculation sheet for project loads.
Free Design Review & Fast Turnaround
Free Design Review & Fast Turnaround
Send us your sketch or site condition and we review the design free — pointing out standard vs bespoke elements before you commit.
Get Design Details
Get Design Details
Get Cage Ladder Design Details
Free design review, fast turnaround, and a full drawing set with DoC and MTC. Tell us your height and application — we'll send the details.
- Free design review
- Heights to 25 m
- DoC, MTC & structural calcs included
- 24h response
The Five Inputs Our Engineers Ask For First
A cage ladder design is only as good as the site data behind it — these five inputs decide almost everything downstream.
Height comes first, and it is more than a ladder length. Climbing height fixes whether a single run up to 25 m is possible, where rest platforms fall under EN ISO 14122-4's 6 m rule, and whether OSHA's 24 ft threshold puts you inside the ladder safety system requirements that fully replace cages after November 18, 2036. Second is the anchor base: wall construction, standoff geometry and bracket capacity — our standard wall mounting runs 8 mm brackets at 1800 mm centres for a 200 mm clearance, but only your wall decides if that holds.
Third, environment. A dry indoor silo and a coastal effluent plant get different answers: Q235B with hot-dip galvanizing as the workhorse, stainless steel where corrosion rules the budget. Fourth, the governing standard — OSHA 1910.23 and 1910.28, EN ISO 14122-4, AS 1657:2018 or BS 4211 — because cage start heights, platform spacing and hoop details all key off it. Fifth, export requirements: container limits, the 14 m single-piece ceiling for galvanizing, and the packing method that protects the finish on an ocean leg quoted per sailing at current rates.
Send those five facts and the review is genuinely free — most first-pass drawing sets follow within a day.
The Decision That Moves Price 10–20%
Standard Geometry or Custom Engineering — How to Tell
Repeat builds skip custom engineering and cut cost. Forcing a standard ladder onto a non-standard structure costs more later. This table draws the line before you request either.
| Design Question | Standard Geometry Handles It | Custom Engineering Required |
|---|---|---|
| Climb height | any height in single pieces up to 14 m, standard rung and cage modules | splices, staged platforms or unusual landing geometry above that envelope |
| Mounting surface | flat wall, standoff 200 mm at 1,800 mm bracket centres, M12 anchor plan | curved tank shells, chimney profiles, elevator shafts — saddle brackets and load paths calculated per structure |
| Governing standard | OSHA 1910.23 and 1910.28, EN ISO 14122-4, BS 4211, AS 1657 with standard cages from 2.2 m | overlapping jurisdictions, deviation requests or client specs stricter than the code minimum |
| Environment | HDG to ISO 1461 for general outdoor duty | chemical or marine exposure driving SS304 at 1.8x or SS316 at 2.5x with revised weld and finish specs |
| Cost effect | baseline $95/m HDG — engineering already amortized | custom adds engineering time; repeat orders of the same geometry then drop back to standard pricing |
Not sure which column your structure falls into? Send the five design inputs to sales@dtsteelladder.com — we will tell you which path is cheaper before you commit.
Engineering You Can Hand to an Inspector
What a Factory Design Set Gets You
The drawing set is where a compliant ladder is actually won or lost. Five things ours is built to do.
| Feature | Advantage | Your Outcome |
|---|---|---|
| Full CAD drawing set | general arrangement, cage geometry, brackets and anchor layout | one approved drawing instead of email clarifications |
| Structural calculation sheet | engineer-signed, built on Q235B / SS304 / SS316 properties | your reviewer approves numbers, not assurances |
| MTC 3.1 traceability | EN 10204 certificates tied to your heat numbers | every weld traceable to tested steel, for a decade |
| Mounting details engineered | standoff 200 mm, brackets at 1,800 mm, M12 anchor schedule per order | the wall side is designed, not improvised on site |
| Free design review | your sketch or GA checked against the standard before you order | a second engineering opinion that costs nothing |