Figure 1: Range of means of access according to the slope – Pitch angle
Key:
A: ramp
B: ramp with horizontal cross pieces to prevent slipping
C: stair with riser
D: stair without riser
E: ship type ladder
Source: ISO 14122 – Safety of machinery – Permanent means of access to machinery.
Figure 2: Example of stair without riser
Key:
w: width of ladder
h: height between treads
r: projection between treads
g: free depth of the tread
α: slope of the ladder – pitch angle
l: length of the rest platform
H: height of the ladder
t: total depth of the tread
Figure 3: Example of fixed ship type ladder
Figure 4A, 4B and 4C: Example of fixed ship type ladder cage
 Figure 4A |
 Figure 4B |
 Figure 4C |
Figure 5: Fall protection system on platform (Dimensions in millimeters)
Key:
H: height of top bar, between 1000 mm (one thousand millimeters) and 1100 mm (one thousand hundred millimeters)
1: platform
2: footer bar
3: intermediate rail
4: top bar – handrail
