Page 289 - Masonry and Concrete

Paving

288 CHAPTER EIGHT

36" SCREEN DOOR
OR STORM DOOR

RAILING

UP
3'-0" MINIMUM

RAILING
3'-0"
MINIMUM
FIGURE 8-10

Landings should be a minimum of 3 ft.

warranted by a particularly competitive market, or if the home owner
is willing to pay extra for this type of custom look.
8.2.1 Driveways

Lay out the rough size and shape of straight driveways using marker
stakes at the corners and string lines along the length. Use garden
hoses to outline the size and shape of curved driveways. Sprinkle sand
or mason’s lime, or use a can of spray paint to mark the concrete out-
line on the ground and excavate a foot or so wider to allow room to
build the formwork. To mark the curve of the driveway apron at the
street, set a pivot stake and use a string to mark a 3–5 ft. radius (Figure
8-11). In poorly drained areas that are frequently water soaked, exca-
vate deep enough to place a 4–6-in. gravel drainage layer under the
concrete, and plan to finish the driveway a little higher off the ground.
If necessary, shape the surrounding grade so that runoff drains around
rather than over the drive.
If the concrete will be poured directly on the subgrade without
gravel, the subgrade should be leveled and the soil tamped with a
hand tamper or a mechanical vibrating tamper. If a gravel bed will be

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