Page 299 - Masonry and Concrete
P. 299
Paving
298 CHAPTER EIGHT
LAP BARS
30 DIA.
AND TIE TRANSVERSE
WITH WIRE REINF. BARS
LONGITUDINAL
REINF. BARS
3/4"
PLYW’D
2 6
4" MIN.
4 4
POSTS
WEDGE 1" PLYWOOD OR
FOR HEIGHT 1 6 T&G
ADJUSTMENT
USE 2 12 STRINGER
FOOTINGS
FORMS AT SIDES
BELOW
OF STEPS FROST LINE
Reinforcing Bars
Concrete Dimensions Longitudinal Transverse
Length, ft. Thk., in. Size Spacing, in. Size Spacing, in.
2-3 4 #2 10 #2 12-18
1
3-4 4 #2 5 /2 #2 12-18
1
4-5 5 #2 4 /2 #2 18-24
5-6 5 #3 7 #2 18-24
6-7 6 #3 6 #2 18-24
7-8 6 #3 4 #2 18-24
8-9 7 #4 7 #2 18-24
FIGURE 8-22
Forms and reinforcing for self-supporting steps. (from Dezettel, Masons and Builders
Library).
8.2.4 Patios
Concrete patios are built the same as sidewalks except that the size
and shape will dictate a different pattern of control joints and a
1
drainage slope of 4 in. per ft. away from the house is recommended.
1
If the patio is 12 ft. wide, for instance, the total slope would be 12 4
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