2.8 Pavements and Curbs
Materials. Usually the best wearing paving materials are
those that are used extensively in the local area. Pavements
and curbs should be designed for ease of long-term
maintenance, not just for first cost. Where practical
designers shall consider pervious or open grid paving or
the use of light-colored/high-albedo materials to avoid a
heat sink of dark surfaces.
Curbs. Curbs should be designed per local standard
practice. Surface-applied precast concrete curbs or
asphalt-type curbs are not allowed as a permanent
solution for channeling traffic and/or drainage on site.
Bruce R. Thompson U.S. Courthouse and Federal Building, Reno, NV
Public Streets and Sidewalks. The GSA project may be in
an area for which there are no established urban design
feet shall be located within a minimum of 15 feet and a
guidelines, but where such considerations would be valu-
maximum of 30 feet from the building. Also, at least one
able. Designs should consider proposing new curb lines,
side of all buildings shall be accessible to fire apparatus.
sidewalk widening, or street configurations to enhance
pedestrian access, perimeter security, and urban design
Vehicular Drives, Parking Lots and Service Areas
quality. Although such public works may not ultimately
become part of the project scope, the design can be a cata-
Entrance Drives. Follow local codes for entrance drive-
lyst for encouraging local action to enhance project quality.
ways within the right-of-way limits of city, county or
State maintained roads.
Drives. Drives should meet local code requirements for
street design, construction requirements, materials and
Surface Parking Lots. Parking stalls must be 2700 mm
(9 feet) wide and 5400 mm (18 feet, 6 inches) long, with
two-way aisles of 7300 mm (24 feet). Where possible,
Fire Lanes. Grass pavers or open concrete grids are
90-degree parking should be used. Accessible parking
encouraged for fire lanes that do not carry normal
spaces must be provided; these shall comply with the
UFAS/ADA in quantity, location and size.
Service Areas. Areas for truck maneuvering should have
Internal islands for landscape planting should occupy no
less than 10 percent of the total parking lot area. Curbs
Pavement Markings. Follow local street code.
should be provided around the parking lot perimeter and
around landscape islands.
Signage for Roads and Parking Lots. The minimum
number of signs necessary to convey the information
The maximum combined gradient for parking lots should
should be used; these must comply with UFAS/ADA.
not exceed 5 percent.
Pavements and Curbs
Revised March 2005 PBS-P100