Page 309 - Masonry and Concrete

Paving

308 CHAPTER EIGHT

SLOPE TREADS TO DRAIN
BY VARYING MORTAR BED
THICKNESS OR SLOPE
CONCRETE BASE TREADS

4"

REINFORCING

FIGURE 8-31

Concrete base for brick steps.

base depends on the strength of the underlying soil, the thickness of
paver that will be used, and whether the base must support foot traffic
or cars and light trucks. For residential driveways, a 4-in. thick gravel
or crushed stone base plus a 2-in. sand setting bed is required, and for
patios or sidewalks a 2-in. gravel base plus a 2-in. sand bed. Mortarless
paving systems can also be laid on existing asphalt if a 2-in. sand lev-
eling bed is added.
Mortarless brick paving requires some method of containment at
the edges to keep the units from sliding. A soldier course of bricks set

SAND IN JOINTS
PAVERS

SAND
LEVELING
GRAVEL
DRAINAGE BED
LANDSCAPE FABRIC
BASE IF
POLYETHYLENE OR
NEEDED
ASPHALT FELTS UNDER
SAND BED
FIGURE 8-32
Mortarless brick paving.

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