Where sanitary sewage facilities are required in conjunction with the development or subdivision of land, the subdivider shall install the facilities in a manner prescribed by the standard specifications for sanitary sewers for the city, which shall be incorporated, in whole or by reference, into all contracts for such work. All improvements shall be designed in accordance with the rules, regulations and standards of the local government, the local government engineer, the state health department, and other appropriate agencies. All sanitary sewer improvements shall be designed by an engineer registered in the state. (Res. 901, 5-10-1977)
TABLE 1
STREET DESIGN STANDARDS FOR THE CITY OF DUNCAN
Design Element | Major Streets | Minor Streets | ||
Primary Thoroughfare | Secondary Thoroughfare | Collector | Local | |
Design Element | Major Streets | Minor Streets | ||
Primary Thoroughfare | Secondary Thoroughfare | Collector | Local | |
Design speed | 40 | 30 | 30 | 25 |
Grade: | ||||
Maximum | 5 percent | 7 percent | 10 percent | 10 percent |
Minimum | 0.5 percent | 0.5 percent | 0.5 percent | 0.5 percent |
Stopping sight distance | 350 feet | 200 feet | 200 feet | 200 feet |
Minimum paving thickness: | ||||
Asphalt section | Structurally designed | Structurally designed | 5 inches | 5 inches1 |
Concrete | Structurally designed | Structurally designed | 6 inches | 6 inches1 |
Residential estate section | - | - | Bituminous surface or slurry seal | |
Number of lanes | 4 | 4 | 2 | 2 |
Lane width | 12 feet | 12 feet | 10 feet | 10 feet2 |
Number of parking lanes | - | - | 2 | 1 |
Shoulder or parking lanes | 10 feet | 10 feet | 6 feet | 6 feet |
Right of way width | 100 feet | 80 feet | 60 feet | 50 feet |
Notes:
1. Minor commercial streets shall have a minimum paving thickness of 6 inches.
2. Minimum width for a local street shall be 26 feet.
All streets shall have 6 inch concrete curbs.
TABLE 2
TYPICAL SECTION FOR CONCRETE STREETS
Notes:
1. This standard shall apply to minor streets as defined in table 1 of this section.
2. Street widths shall be measured from inside of curb to inside of curb.
3. Curbs shall be 6 inches in height and conform to the typical curb section as approved by the local government engineer.
4. Street shall slope from the centerline to curb at 1/4 fall per foot.
5. Detailed specifications available from local government engineer.
TABLE 3
TYPICAL SECTION FOR ASPHALT STREETS
Notes:
1. This standard shall apply to minor streets as defined in table 1 of this section.
2. Street widths shall be measured from inside of curb to inside of curb.
3. Curbs shall be 6 inches in height and conform to the typical curb section as approved by the local government engineer.
4. Street shall slope from the centerline to curb at 1/4 fall per foot.
5. Base shall vary in accordance with local conditions and shall be approved by the local government engineer.
TABLE 4
TYPICAL SECTION FOR RESIDENTIAL ESTATE STREETS
Notes:
1. This standard shall apply to minor streets within the R-4 residential estate zoning district.
2. Street widths shall be measured from inside of curb to inside of curb.
3. Curbs shall be 6 inches in height and conform to the typical curb section as approved by the local government engineer.
4. Street shall slope from the centerline to curb at 1/4 fall per foot.
5. Base shall vary in accordance with local conditions and shall be approved by the local government engineer.
(Res. 901, 5-10-1977; amd. Ord. 1354, 8-9-1994)