Street Classification
|
Subbase
|
Base Course
|
Paved Surface
|
---|---|---|---|
Arterial and collector streets
|
8" 2A or 3A stone base
|
Superpave base course, PG 64-22, 0.0/0.3 ESALs, 4" of 25.0 mm
Mix
|
Superpave wearing course, PG 64-22, 0.0/0.3 ESALs, 1.5" of 9.5
mm mix
|
Local streets
|
8" 2A or 3A stone base
|
Superpave base course, PG 64-22, 0.0/0.3 ESALs, 4" of 25.0 mm
mix
|
Superpave wearing course, PG 64-22, 0.0/0.3 ESALs, 1.5" of 9.5
mm mix
|
Alley
|
8" 2A or 3A stone base
|
Superpave base course, PG 64-22, 0.0/0.3 ESALs, 4" of 25.0 mm
mix
|
Superpave wearing course, PG 64-22, 0.0/0.3 ESALs, 1.5" of 9.5
mm mix
|
Street Classification
|
Minimum Cartway Width
|
Minimum Right-of-Way Width
|
---|---|---|
Arterial street (highway)
|
As determined after discussion with the Township, PennDOT, and
the Lancaster County Planning Commission; however, the minimums shall
be as follows:
| |
40 feet
|
60 feet
| |
Collector street
|
38 feet
|
50 feet
|
Local street with curb
|
33 feet
|
50 feet
|
*Local street with stabilized shoulder
|
28 feet with 3-foot paved shoulders
|
50 feet
|
Cul-de-sac bulb
|
80-foot diameter
|
100-foot diameter
|
Alley, no parking
|
12 feet
|
20 feet (easement)
|
NOTES:
| |
---|---|
*
|
On-street parking is restricted to one side of the street. The
restricted parking area(s) shall be identified on the plan.
|
Design Speed
(miles per hour)
|
"K"
Crest Vertical Curves
(feet)
|
"K"
Sag Vertical Curves
(feet)
|
---|---|---|
20
|
10
|
20
|
25
|
20
|
30
|
30
|
30
|
40
|
35
|
45
|
50
|
40
|
70
|
70
|
45
|
100
|
90
|
50
|
150
|
110
|
55
|
220
|
130
|
Through Street Classification
|
Minimum Intersection Separation Distance
(feet)
|
---|---|
Arterial
|
800
|
Collector
|
500
|
Local
|
200
|
Where:
| ||
SSSD
|
=
|
Minimum safe stopping sight distance (feet)
|
V
|
=
|
Velocity of vehicle (miles per hour)
|
t
|
=
|
Perception time of driver (2.5 seconds)
|
f
|
=
|
Wet friction of pavement (0.30)
|
G
|
=
|
Percent grade of roadway divided by 100
|
Number of Lanes
|
Cartway Width
(feet)
|
---|---|
3
|
36
|
2
|
24
|
1
|
12
|
Acer rubrum cultivars
|
Red maple
|
Aesculus x carnea
|
Red horsechestnut
|
Cladrastis lutea
|
American yellowwood
|
Ginkgo biloba (males only)
|
Ginkgo
|
Gleditsia triacanthos inermis cultivars
|
Thornless honey locust
|
Liquidambar styraciflua
|
Sweetgum
|
Nyssa sylvatica
|
Black tupelo
|
Quercus acutissima
|
Sawtooth oak
|
Quercus phellos
|
Willow oak
|
Quercus rubra
|
Red oak
|
Sophora japonica
|
Japanese pagoda tree
|
Tilia cordata
|
Littleleaf linden
|
Tilia x euchlora
|
Crimean linden
|
Tilia tomentosa
|
Silver linden
|
Zelkova serrata cultivar
|
Japanese zelkova
|