STREETSCAPE GUIDANCE

HOME
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] Carriageways 104
Maintenance
Resurfacing regimes should be based on
an understanding of the existing surface
composition and condition of the carriageway.
Contractors are encouraged to recycle materials
where practicable
Innovative surface materials
There is continual innovation within the industry
of materials science, improving the performance
and cost effectiveness of surfacing through more
efficient laying techniques and new technologies.
While the materials palette is strictly defined
on the TLRN to ensure quality and consistency,
advances in material technologies will be
considered on an ad hoc basis to trial new
finishes and test the resilience of the product on
a limited stretch of road.
Additional information
British Standard:
BS 594987:2015 Asphalt for roads and other
paved areas. Specification for transport, laying,
compaction and product-type testing protocols
Granite setts for carriageways
A sett is a dressed block or stone, 50-300mm
in length and 75mm or more in depth. Setts are
used to aid the creation of a high quality surface
finish to help emphasise greater pedestrian
priority. Setts may be considered in exceptional
circumstances where looking to:
• Provide a high quality low speed environment,
for example, for shared space schemes, where
vehicle traffic is especially low
• Communicate a traffic calmed space with
visually related carriageway and footway
surfaces
• Improve material durability for footway
surfaces which are subject to regular vehicle
overrun
• Reflect the historic character of an area
Figure 103: Granite setts used on a carriageway
to slow vehicles and create a more pedestrian
friendly setting
Design considerations
The installation of setts should be considered
for:
• Inset on-carriageway bays and on-footway
loading or parking bays and in front of pubs
• The flat surface of raised tables on side road
entry treatments, but not on the ramp
• Footway crossovers
• Traffic islands, central median strips or within
central reservations that are not flush and do
not have regular vehicle overrun
Only in exceptional locations where vehicles
are known to mount the kerb, can a band of five
100x100mm setts be installed on the footway,
running parallel to the kerb.
Figure 104: Granite setts on a raised table at
Goswell Triangle