Also called: LADDER
**SWL: Norma EN 61537-1 ed 2007
10.4 - Test for SWL (safe working load) of cable tray lengths and cable ladder lengths mounted in the horizontal plane running horizontally on a single span installation.
The practical mod-span deflection at the SWL shall not exceed 1/100th of the span.
The transverse deflection at the SWL shall not exceed 1/20th of the width of the samples.
*Length:
- Bars up to 6000 mm treatment 40 - 41 (Aisi 316L on request)
- Bars up to 6000 mm treatment 03 (riveted and welded crossbars)

| 01 | Galvanization (Sendzimir method) - UNI EN 10346 | |
| 03 | Hot dip galvanizing - UNI EN ISO 1461 | |
| 40 | Stainless steel AISI 304 - UNI EN 10088 |
EN 61537-1 ed.2007- (Rif: Norm limitation)
IMQ

y= SWL(N/m) as function of the span
x= Span (S) (m)
D= Uniform load
