2nd Edition

Station Layout 19
An additional 0.3 metres width should be provided in passageways where
centre handrails are required to divide the flows. In no case should any
passageway be narrower than 2.0 metres.
Where long distances have to be walked consideration should be given
to the provision of travelators or moving walkway. The preferred maximum
gradient for a travelator for passengers is 1 in 20 but in very tight circumstances
this may be increased to 1 in 12 as an absolute maximum. Run-offs
of not less than 6 metres are necessary at either end of travelators.
An important feature is that passageways should be of constant capacity
along their full length with good lines of sight avoiding as far as possible
recesses and indentations which could form litter traps and possible hiding
places.
It is very desirable that the ceiling height in passageways should be
as high as practicable but generally not less than 3 metres. Where this is
not achievable a reduction to an absolute minimum of 2.4 metres may be
permissible.
2.11 Stairs, Escalators and Lifts
In considering changes in level that have to be negotiated by passengers,
the following guidelines should be adopted for new construction:
Less than 0.5 metres — Surface may be ramped.
(preferred max. 1 in 20, absolute max. 1 in 12.)
0.5 m to 3.0 metres — Fixed staircase (min. 3 risers).
3.0 m to 5.0 metres — Normally fixed staircase but escalator if cost can
be justified.
Over 5.0 metres — Normally escalator but outer suburban stations
mayhavefixedstairsuptoheightof6mwithtwo
half landings.
Staircase dimensions must comply with local Building Regulations and in
the UK with the Department of Transport Railway Construction and Operation
Requirements.
Escalators must comply with British Standard BS 5656 and particular
attention must be given to provision of access to all equipment/machine
rooms during traffic hours without obstructing passengers. Careful consideration
needs to be given to safety requirements in emergencies. Passenger