Type
of Street
|
Right-of-
Way
(feet)
|
Cartway
(feet)
|
Sidewalks
Required
|
Parking
Permitted
in Cartway
| |
---|---|---|---|---|---|
Residential
|
50
|
32
|
Yes
|
Yes
| |
Neighbor-
hood feeder
|
60
|
40
|
Yes
|
Yes
| |
Secondary
|
70
|
50
|
Yes
|
No
| |
Major
|
86+
|
Varies
|
Yes
|
No
| |
Industrial
|
60
|
34
|
No
|
No
|
Subbase*
|
Base
Course
Bituminous
|
Surface
Course
| ||
---|---|---|---|---|
Soil
Aggregate
Designation
1-5
(inches)
|
Stabilized
Base
Bituminous
Concrete
Course
Mix 1-2
(inches)
|
FABC-1,
Mix 1-5
(inches)
| ||
Residential
|
6
|
5
|
2
| |
Neighborhood feeder
|
6
|
5
|
2
| |
Secondary
|
6
|
6
|
2
| |
Major
|
6
|
6
|
2
| |
Industrial
|
6
|
6
|
2
| |
Parking lots
| ||||
Automobile
|
6-inch quarry-processed stone
|
2
| ||
Truck
|
6
|
5
|
2
| |
Driveways
|
6
|
--
|
2 or 2-3-2
| |
*Note: This item
may be waived by the Planning Board subject to recommendations by
the Planning Board engineer and subject to verification of existing
ground and subsurface conditions.
|
Access Aisles
| |||||
---|---|---|---|---|---|
Angle
of
Parking
|
Stall
Width
(feet)
|
Stall
Depth
(feet)
|
One-
Way
(feet)
|
Two-
Way
(feet)
| |
90º
|
10
|
18
|
25
|
25
| |
60º
|
10
|
18
|
18
|
*
| |
45º
|
10
|
19
|
18
|
*
| |
30º
|
10
|
19
|
18
|
*
| |
Parallel
|
8
|
23
|
12
|
20
| |
*Note: Two-way traffic
not permitted.
|
Parking
Spaces
|
Length of Entrance Access
Aisle to Be Kept Free of Parking
Maneuvers Distance From Right-of-Way
(feet)
| |
---|---|---|
1 to 39
|
20
| |
40 to 99
|
40
| |
100 to 299
|
60
| |
300 and over
|
20 additional feet for each 500 additional parking
spaces
|
Distance
Between Driveways
(feet)
|
Number of
Trees Required
| |
---|---|---|
Less than 8
|
0
| |
8 to 39
|
1
| |
40 to 69
|
2
| |
70 to 99
|
3
| |
100 to 129
|
4
| |
130 to 159
|
5
| |
160 to 189
|
6
|
Q = CIA
| ||
Where
| ||
Q = Volume in cubic feet per second
| ||
C = Runoff factor
| ||
I = Intensity of rainfall in inches per hour
| ||
A = Watershed area in acres
|
n = 0.013 Concrete pipe
n = 0.021 Corrugated metal pipe
|
n = 0.015 Best concrete-lined ditch
n = 0.025 Best unlined ditch
n = 0.03 - 0.15 Fair to poor natural
streams and watercourses
|
Maximum Allowable Velocity
| ||
---|---|---|
Excavation Material
|
Velocity
(feet per second)
| |
Fine sand and firm loam
|
2.5 - 3.5
| |
Stiff clay and hard pan
|
3.75 - 6.0
| |
Concrete-lined ditch
|
15
|