SECTION 12.
SIDEWALKS
1. OVERALL REQUIREMENTS. Sidewalks should be designed to provide an
economical, all-weather surface suitable for pedestrian traffic. See NAVFAC
DM-5.5 for widths and grades.
2. DESIGN. Use one of the sidewalk types discussed below, as appropriate for
local conditions. Where sidewalks cross driveways and private entrances,
design portions of sidewalks to be used by vehicular traffic for anticipated
loads.
a. Aggregate Base and Bituminous Surface. Use a stabilized base about 4
inches thick, consisting of gravel, slag, stone, or other approved materials;
and a minimum l-inch-thick surface course consisting of a bituminous sand-mix
or a bituminous concrete-mix.
b. Concrete Walks. Use 2500-psi concrete, minimum 4 inches thick, grooved
longitudinally and transversely at 3- to 5-foot intervals to a depth of at
least 1/4 inch per inch of slab thickness, to provide weakened plane joints.
(1) Use expansion joints to separate walks from buildings or structures.
(2) Provide a wood float or broom finish with tooled edges at sides and
transverse joints.
c. Temporary Walks. Use stabilized soil mixtures that will be stable during
adverse weather conditions (see low-cost roads, Section 11). Utilize available
materials, mixing with other materials for stabilization as necessary. Use
bituminous surface treatment where justified, or stabilize soil in-place where
it is suitable, without any additional surfacing.
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