Construction Notes for Sidewalks & Driveways on Curbed-Type Streets (Residential Areas)
- Proposed driveway, sidewalk, curb, gutter line and grade shall match existing street
- Proposed sidewalk shall be constructed with portland cement (4 1/2″ sack cement per cubic yard). Four inches thick and 4 feet minimum width
- Proposed driveway shall be built with portland cement concrete (4 1/2 sack cement per cubic yard). Six inches thick from proposed saw cut at existing pavement to right-of-way line (front property line) and to be reinforced with 3/8″ inch zero-deformed reinforcing bars (minimum ASTM A615, grade 60, unless noted) spaced at 24-inches center-to-center each way with 6 inches minimum overlap (12″ x 12″ x w4 x w4, or 6″ x 6″ x w6 x w6 – as alternate).
- Proposed driveway reinforcing steel is to be tied to existing roadway reinforcing steel with a minimum overlap of 6 inches.
- Proposed curb and gutter line shall be built with portland cement concrete (4 1/2 sack cement per cubic yard)
- Proposed gutter line is to be maintained at face of existing curb
- Saw cut existing curb at each end of proposed driveway and knock out existing curb
- Saw cut existing pavement and break out to exposed existing reinforcement steel a minimum of 8 inches at proposed driveway intersection.
- Compact subgrade for proposed driveway connection from proposed saw cut at existing pavement to right-of-way line. Compact to 95% of standard proctor density (+/- 2% optimal moisture). The county engineer reserves right to require laboratory tests to be conducted.
- If more than one proposed driveway is built on the same property, said driveways shall be separated by a minimum distance of 20 feet (on roadways with curbs and sidewalks)
- Proposed area between driveways, from back-of-curb to sidewalk, and from sidewalk to right-of-way line may be concrete or dirt (on roadways with curbs and sidewalks)
- Proposed sidewalks shall have 1-inch board expansion joints or 1/2″ non-extruding preformed joint will be between sidewalk and curb, around fire hydrants, and utility poles.
- Reinforcing steel to be elevated a minimum of 3 inches above subgrade. (3 inch manufactured chairs are required with maximum spacing of 72 inches center-to-center each way).
driveway to sidewalk
driveway with curb
