STREETSCAPE GUIDANCE

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INTRODUCTION
PART A
A vision for London’s streets
PART B
From strategy to delivery
PART C
New measures for new challenges
PART D
Balancing priorities
PART F
Appendix
PART E
Physical design and materials
SECTION 6
Introduction
SECTION 7
High quality footways
SECTION 8
Carriageways
SECTION 9
Crossings
SECTION 10
Kerbside activity
SECTION 11
Footway amenities
SECTION 12
Safety and functionality
SECTION 13
Street environment
SECTION 14
Transport interchanges
Streetscape Guidance
[Part E – Physical design and materials] Street environment 286
The use of traditional covers and their associated
construction methods have resulted in a history
of failure without any warning, often resulting
in lane closures at peak times and significant
disruption to journey times. Taking appropriate
consideration at design stage reduces the
potential for high cost reactive defects and
the risk of potential third party claims for
compensation.
Grates
A gully grate is a slotted cover to a gully pot.
Grates prevent objects from washing into gullies,
thereby reducing the risk of blockages and
flooding. Designers need to select the correct
grating type and positioning of gullies. It is not
good practice to position gully gratings adjacent
to crossing points where they are a potential trip
hazard.
Cycle friendly grates: In any location where
there is a possibility that cycle wheels will cross
gullies, the grate slots should be at right angles
to the direction of travel. Alternatively, non-slot
‘pedestrian style’ gratings should be provided.
Pedestrian friendly grates: In any location
where there is a high likelihood that a pedestrian
will walk directly across the gully, this form of
grate should be provided. These grates should be
slip resistant and also prevent narrow heels from
getting trapped. The grate should be at right
angles to the direction of travel.
High volume grating: These may be used on
the network where cycles are not permitted.
High volume grates are at risk of capturing cycle
wheels in the grating due to the large gaps
required to capture higher rates of rainwater.
Slot channels: Consideration should be given
to the maintenance implications of slot channels
which can block with debris unless routinely
cleared.
Channels: In some instances designers
may need to install channels in the footway.
Dished channels should be avoided as they
do not provide a level walking surface.
Due consideration should be given to their
positioning and surrounding surfaces.
Figure 278: Cycle friendly grate on TLRN
Figure 279: Channel and pedestrian friendly gully