SITE STAIRWAY FEATURES & BENEFITS

1. Start with the rise height required (4.2m as

shown in the table 'y' axis)

2. Draw a line across the inclination diagram

3. Choose the number of steps shown on the

top section of the scale (from 3 - 36) and

follow the curve until it intercepts with the

rise height line you have drawn, to give

inclination required (24 steps = 38º)

4. Using a straight line, track down to the

Reach Length from building (5.3m as

shown on the 'x' axis)

INCLINATION DIAGRAM

The inclination diagram is used for selecting the Stairway length.

Recommended inclination range is 25° - 50° (30° minimum for compliance with EN12811)

An example is shown in the diagram with dotted lines and should be interpreted as follows:

Features and Benefits

• Whatever the angle of the Stairway

(between 25° and 50°), the treads will

always be horizontal

• The locking mechanism ensures the stability of

the Stairway and keeps it at the correct angle

• The bottom of the stringers are shaped

to prevent slipping

• Being over 750mm wide, the Stairway

permits occasional passing if required

• Can be folded flat for ease of transport

• The Stairway is manufactured in steel

sections and has a durable galvanised

finish as standard

• The treads have a coarse expanded metal

surface for grip, which also clears muddy

footwear in use

6

1

1

2

3

4

5

6

7

8

9

50º 45º

40º

35º

30º

25º

Height (m)

2 3 4 5 6 7 8 9 10 Reach

Length from building

(m)

3

9 12 15 18 21 24 27 30 33 36

1

3

2

4

103

Site Stairway