4
© 2013 Rockwood Retaining Walls, Inc. All Rights Reserved. Please see copyright notice on page 2.
Preparation:
Base can be constructed of either poured slab or compacted gravel.
Concrete Base Foundation:
- 4" deep
- 4" outside perimeter of base
- Reinforce with 6" x 6" no. 10 WWM
- Compact sub-base soils to 95% of
standard proctor (ASTM D698)
Aggregate Base Foundation:
- 6" deep
- 8" outside perimeter of base
- Compact sub-base soils to 95% of standard proctor
- Compact aggregate base to 95% of standard proctor (ASTM D698)
Zoning and Permits:
Before you plan your project, learn about the necessary zoning requirements and rules
for excavating and building in your area. No matter how small your project, be sure you obtain the
necessary permits before you start construction.
Know What’s Below:
Whether you are planning to do it yourself
or hire a professional, smart digging means calling 811 before each
job. Homeowners often make risky assumptions about whether or
not they should get their utility lines marked, but every digging job
requires a call – even small projects like planting trees and shrubs.
Base
Sample
