Road Classification
|
Right-of-Way Width
(feet)
|
Cartway Width
(feet)
| |
---|---|---|---|
Arterial
|
80
|
24
| |
Major collector
|
60
|
22
| |
Minor collector
|
60
|
22
| |
Local, including culs-de-sac
|
50
|
20
|
14 feet for SDR-35
| |
18 feet for SDR-26
| |
20 feet for SDR-21
|
Caliper
(inches)
|
Minimum Ball Diameter
(inches)
| |
---|---|---|
2 to 2 1/2
|
26
| |
2 1/2 to 3 1/2
|
34
| |
3 1/2 to 5
|
44
| |
5 to 6
|
54
|
Angle of Parking
|
Parking Width
(feet)
|
Stall (Space) Depth
(feet)
|
Aisle Width
| |
---|---|---|---|---|
One-Way
(feet)
|
Two-Way
(feet)
| |||
90°
|
10
|
18
|
20
|
24
|
60°
|
10
|
21
|
18
|
not permitted
|
45°
|
10
|
20
|
13
|
not permitted
|
30°
|
10
|
18
|
12
|
not permitted
|
Parallel
|
8
|
22
|
12
|
18
|
Layer Designation
|
Layer Description
|
Anticipated Load
| |||
---|---|---|---|---|---|
Light
|
Moderate
|
Moderately Heavy
|
Heavy
| ||
A - Wearing Course
|
Bituminous
|
2.5
|
1.5
|
1.5
|
1.5
|
B - Base Course
|
Bituminous or concrete
|
None
|
3.0
|
3.5
|
4.5
|
C - Structural Base
|
Granular (stone)
|
4.0
|
4.0
|
6.0
|
6.0
|