Caliper of Existing Trees Removed
|
Number of Replacement Trees
|
---|---|
Between 3 and 6
|
1
|
Between 6 and 12
|
3
|
Between 12 and 18
|
4
|
Between 18 and 24
|
5
|
Between 24 and 30
|
7
|
Between 30 and 36
|
10
|
Tree Size at Maturity
(height in feet)
|
Soil Volume
(cubic feet)
|
---|---|
Large trees (45+)
|
200
|
Medium-sized trees (30 to 45)
|
150
|
Small trees (to 30)
|
100
|
Tree Size at Maturity
(height in feet)
|
Planting Interval
(feet)
|
---|---|
Large trees (45+)
|
40
|
Medium-sized trees (30 to 45)
|
30
|
Small trees (to 30)
|
20
|
Table 1
|
---|
Recommended Small Street Trees
|
Botanical Name
|
Common Name
|
Minimum Planting Size
|
---|---|---|
Acer campestre
|
Hedge Maple
|
2 1/2 to 3-inch caliper
|
Amelanchier laevis
|
Allegheny Serviceberry
|
2 to 2 1/2-inch caliper
|
Amelanchier x hydrida 'Cumulus'
|
Shadblow 'Cumulus'
|
2 to 2 1/2-inch caliper
|
Acer buergeranum
|
Trident Maple
|
2 1/2 to 3-inch caliper
|
Crataegus phaenopyrum x. fastigiata
|
Washington Hawthorne
|
2 1/2 to 3-inch caliper
|
Crataegus viridis
|
Green Hawthorne
|
2 1/2 to 3-inch caliper
|
Magnolia x lobneri 'Merrill'
|
Merrill Magnolia
|
10 to 12 feet
|
Table 2
|
---|
Recommended Medium Street Trees
|
Botanical Name
|
Common Name
|
Minimum Planting Size
(caliper in inches)
|
---|---|---|
Carpinus caroliniana
|
American Hornbeam
|
2 1/2 to 3-inch
|
Celtis bungeana
|
Bunge Hackberry
|
2 1/2 to 3-inch
|
Cladrastis kentuckea
|
Yellowwood
|
2 to 2 1/2-inch
|
Cladrastis lutea
|
Yellowwood
|
2 to 2 1/2-inch
|
Phellodendron amurense
|
Amur Corktree
|
2 1/2 to 3-inch
|
Tilia cordata x. 'Whitehouse'
|
Whitehouse Linden
|
3 to 3 1/2-inch
|
Table 3
|
---|
Recommended Large Street Trees
(cultivated varieties)
|
Botanical Name
|
Common Name
|
Minimum Planting Size
(caliper in inches)
|
---|---|---|
Acer rubrum1
|
Rubram Red Maple
|
2 1/2 to 3-inch
|
Acer saccharum
|
Sugar Maple
|
3 to 3 1/2-inch
|
Celtis occidentalis 'Magnifica'
|
Hackberry
|
3 to 3 1/2-inch
|
Fagus grandifolia
|
American Beech
|
2 1/2 to 3-inch
|
Fraxinus americana 'Autumn Purple'
|
Autumn Purple Ash
|
3 to 3 1/2-inch
|
Fraxinus pennsylvanicum 'Patmore'
|
Patmore Green Ash
|
3 to 3 1/2-inch
|
Ginkgo biloba (male only)
|
Ginkgo
|
3 to 3 1/2-inch
|
Gleditsia triacanthos inermis
|
Thornless Honey Locust
|
2 1/2 to 3-inch
|
Gymnocladus diocus
|
Kentucky Coffeetree
|
2 1/2 to 3-inch
|
Liquidambar styraciflua
|
Sweet Gum
|
2 1/2 to 3-inch
|
Liriodendron tulipifera
|
Tulip Tree
|
2 1/2 to 3-inch
|
Nyssa sylvatica
|
Black Tupelo
|
3 to 3 1/2-inch
|
Plantanus acerifolia
|
Plane Tree
|
2 1/2 to 3-inch
|
Platanus occidentalis
|
Sycamore
|
3 to 3 1/2-inch
|
Quercus alba
|
White Oak
|
2 1/2 to 3-inch
|
Quercus bicolor
|
Swamp White Oak
|
2 1/2 to 3-inch
|
Quercus borealis
|
Northern Red Oak
|
3 to 3 1/2-inch
|
Quercus coccinea
|
Scarlet Oak
|
3 to 3 1/2-inch
|
Quercus marcocarpa
|
Bur Oak
|
3 to 3 1/2-inch
|
Quercus palustris
|
Pin Oak
|
2 1/2 to 3-inch
|
Quercus palustris 'Green Pillar'2
|
Green Pillar Oak
|
3 to 3 1/2-inch
|
Quercus phellos
|
Willow Oak
|
3 to 3 1/2-inch
|
Quercus rubra
|
Red Oak
|
2 1/2 to 3-inch
|
Tilia Americana 'Legend'1
|
Legend American Linden
|
3 to 3 1/2-inch
|
Ulmus parvifolia3
|
Chinese Elm
|
3 to 3 1/2-inch
|
Zelkova serrata1, 3
|
Japanese Zelkova
|
3 to 3 1/2-inch
|
NOTES:
1 Cultivated variety.
A single cultivar should be selected for consistency in appearance
on a street.
2 Remove lower branches.
3 Non-native. Use
only in limited quantities.
|
Table 4
|
---|
Additional Recommended Trees
|
Botanical Name
|
Common Name
|
Minimum Planting Size
|
---|---|---|
Acer palmatum
|
Japanese Maple
|
6 to 7 feet
|
Acer pennsylvanicum
|
Striped maple
|
2 1/2 to 3-inch caliper
|
Acer saccharum
|
Sugar Maple
|
3 to 3 1/2-inch caliper
|
Amelanchier canadensis
|
Shadblow Serviceberry
|
5 to 6 feet
|
Betula papyrifera
|
Paper Birch
|
2 1/2 to 3-inch caliper
|
Betula pendula
|
Weeping Birch
|
12 to 14 feet
|
Carpinus caroliniana
|
American Hornbeam (Ironwood)
|
2 1/2 to 3-inch caliper
|
Carya tomentosa
|
Mockernut Hickory
|
2 1/2 to 3-inch caliper
|
Cedrus atlantica glauca
|
Blue Atlas Cedar
|
6 to 8 feet
|
Celtis occidentalis
|
Hackberry
|
2 1/2 to 3-inch caliper
|
Cercidiphyllum japonicum
|
Katsura-tree
|
3 to 3 1/2-inch caliper
|
Cercis Canadensis
|
Eastern Redbud
|
6 to 8 feet
|
Chionanthus virginicus
|
White Fringetree
|
5 to 6 feet
|
Cornus florida
|
Flowering Dogwood
|
5 to 6 feet
|
Cornus florida & CVS
|
American Dogwood
|
2 1/2 to 3-inch caliper
|
Cornus kousa
|
Chinese Dogwood
|
2 to 2 1/2-inch
|
Cornus x ‘Rutcan’
|
Constellation Rutgers Dogwood
|
5 to 6 feet
|
Cornus x ‘Rutcan’
|
Celestial Rutgers Dogwood
|
5 to 6 feet
|
Cotinus obovatus
|
American Smoketree
|
2 1/2 to 3-inch caliper
|
Crataegus crus-galli
|
Cockspur Hawthorn
|
3 to 4 feet
|
Crataegus phaenopyrum
|
Washington Hawthorne
|
5 to 6 feet
|
Cryptomeria japonica
|
Cryptomeria
|
5 to 6 feet
|
Fagus grandifolia
|
American Beech
|
3 to 3 1/2-inch caliper
|
Fagus sylvatica 'cuprea'
|
Copper Beech
|
3 to 3 1/2-inch caliper
|
Gleditsia triacanthos inermis
|
Thornless Honeylocust
|
3 to 3 1/2-inch caliper
|
Halesia carolina
|
Carolina Silverbell
|
2 1/2 to 3-inch caliper
|
Ilex opaca
|
American Holly
|
4 to 5 feet
|
Juniperus virgineana
|
Eastern Red Cedar
|
4 to 5 feet
|
Juniperus virginiana
|
Red Cedar
|
5 to 6 feet
|
Liquidambar styraciflua
|
Sweetgum
|
3 to 3 1/2-inch caliper
|
Liriodendron tulipfera
|
Tuliptree
|
3 to 3 1/2-inch caliper
|
Magnolia virgineana
|
Sweetbay Magnolia
|
5 to 6 feet
|
Oxydendrum arboreum
|
Sourwood
|
5 to 6 feet
|
Picea abies
|
Norway Spruce
|
4 to 5 feet
|
Picea glauca
|
White Spruce
|
4 to 5 feet
|
Picea pungens
|
Colorado Spruce
|
4 to 5 feet
|
Pinus strobes
|
White Pine
|
7 to 8 feet
|
Pinus thunbergiana
|
Japanese Black Pine
|
5 to 6 feet
|
Pinus virginiana
|
Virginia Pine
|
5 to 6 feet
|
Populus balsamifera
|
Balsam Popular
|
2 1/2 to 3-inch caliper
|
Prunus cerasifera
|
Flowering Plum
|
2 1/2 to 3-inch caliper
|
Prunus serrulata
|
White Cherry
|
2 1/2 to 3-inch caliper
|
Pseudotsuga menziesii
|
Douglas Fir
|
4 to 5 feet
|
Quercus acutissima
|
Sawtooth Oak
|
3 to 3 1/2-inch caliper
|
Quercus palustris
|
Pin Oak
|
3 to 3 1/2-inch caliper
|
Rhammus frangula columnaris
|
Tallhedge Buckthorn
|
3 to 4 feet
|
Sassafras albidum
|
Sassafras
|
5 to 6 feet
|
Syringa vulgaris
|
Common Lilac
|
4 to 5 feet
|
Tilia cordata1
|
Linden
|
3 to 3 1/2-inch caliper
|
Tilia tomentosa1
|
Silver Linden
|
3 to 3 1/2-inch caliper
|
Tsuga Canadensis
|
Canadian Hemlock
|
4 to 5 feet
|
Ulmus Americana 'Delaware'2
|
American Elm, 'Delaware'
|
3 to 3 1/2-inch caliper
|
NOTES:
1 Cultivated variety.
A single cultivar should be selected for consistency in appearance
on a street.
2 Use only if resistant
to Dutch Elm Disease.
|
Betula
|
Pyrus
|
Carpinus palustris
|
Quercus, excluding Q.
|
Crataegus
|
Salix babylonica
|
Ilex opaca
|
Tilia tomentosa
|
Liquidambar styraciflua
|
Zelkova
|
Liriodendron tulipifera
|
Table 5
|
---|
Recommended Shrubs
|
Botanical Name
|
Common Name
|
Minimum Planting Size
|
---|---|---|
Abelia grandiflora
|
Glossy Abelia
|
18 to 24 inches
|
Aronia arbtutifolia brilliantissima
|
Red Chokeberry
|
2 to 3 feet
|
Aronia melanocarpa
|
Black Chokeberry
|
4 to 5 feet
|
Azalea delaware valley
|
Delaware Valley Azalea
|
18 to 24 inches
|
Azalea exbury
|
Exbury Azalea
|
18 to 24 inches
|
Azalea hino-crimson
|
Hino-Crimson Azalea
|
18 to 24 inches
|
Calycanthus occidentalis
|
Allspice
|
4 to 5 feet
|
Ceanothus americanus
|
New Jersey Tea
|
3 to 4 feet
|
Clethra alnifloia
|
Summersweet
|
15 to 18 inches
|
Cornus alba sibirica
|
Siberian Dogwood
|
3 to 4 feet
|
Cornus canadensis
|
Bunchberry
|
3 to 4 feet
|
Cornus sericea
|
Red Osier Dogwood
|
4 to 5 feet
|
Cornus stolonifera lutea
|
Yellowtwig
|
3 to 4 feet
|
Cotoneaster apiculata
|
Cranberry Cotoneaster
|
12 to 18 inches
|
Cotoneaster salicifolia repens
|
Park Carpet Cotoneaster
|
12 to 18 inches
|
Deutzia gracilis
|
Slender Deutzia
|
18 to 24 inches
|
Euonymous fortunei vegetus
|
Bigleaf Wintercreeper
|
18 to 24 inches
|
Fothergilla gardenii
|
Dwarf Fothergilla
|
12 to 18 inches
|
Fothergilla major
|
Large Fothergilla
|
12 to 18 inches
|
Hamamelis vernalis
|
Vernal Witch Hazel
|
4 to 5 feet
|
Hamamelis virginiana
|
Witchhazel
|
4 to 5 feet
|
Ilex crenata hellerei
|
Dwarf Japanese Holly
|
18 to 24 inches
|
Ilex glabra
|
Inkbeny
|
18 to 24 inches
|
Ilex glabra compacta
|
Compact Inkberry
|
18 to 24 inches
|
Ilex verticillata
|
Winterberry
|
4 to 5 feet
|
Juniperus chinensis glauca hetzi
|
Hetz Juniper
|
2 1/2 to 3 feet
|
Juniperus chinensis pfitzeriana compacta
|
Compact Pfitzer Juniper
|
18 to 24 inches
|
Juniperus chinensis torulosa
|
Torulosa Juniper
|
4 to 5 feet
|
Juniperus horizontalis "Bar Harbor"
|
Bar Harbor Juniper
|
18 to 24 inches
|
Juniperus horizontalis wiltoni
|
Blue Rug Juniper
|
18 to 24 inches
|
Juniperus sargenti
|
Sargent Juniper
|
15 to 18 inches
|
Juniperus virginiana
|
Upright Juniper
|
4 to 5 feet
|
Kalmia latiflora
|
Mountain Laurel
|
15 to 18 inches
|
Leucothoe axillaris
|
Coast Leucothoe
|
18 to 24 inches
|
Leucothoe racemosa
|
Fetterbush
|
3 to 4 feet
|
Magnolia soulangiana
|
Saucer Magnolia
|
8 to 10 feet
|
Magnolia stellata
|
Star Magnolia
|
6 to 8 feet
|
Magnolia virginiana
|
Sweetbay Magnolia
|
6 to 8 feet
|
Myrica pennsylvanicum
|
Bayberry
|
2 to 3 feet
|
Philadelphus virginalis
|
Virginal Mockorange
|
2 to 3 feet
|
Picea excelsa nidiformis
|
Birdnest Spruce
|
#1 can
|
Pieris japonica
|
Japanese Andromeda
|
15 to 8 inches
|
Pinus montana mughus
|
Mugho Pine
|
18 to 24 inches
|
Potentilla fruticosa
|
Bush Cinquefoil
|
12 to 18 inches
|
Pyracantha fiery cascade
|
Fiery Cascade Firethorn
|
18 to 24 inches
|
Rhamnus caroliniana
|
Carolina Buckthorn
|
3 to 4 feet
|
Rhododendron calendulaceum
|
Flame Azalea
|
2 to 3 feet
|
Rhododendron catawbienese
|
Catawba Rhododendron
|
2 to 3 feet
|
Rhododendron maximum roseum
|
Rosebay Rhododendron
|
2 to 3 feet
|
Spirea latifolia
|
Meadowsweet
|
3 to 4 feet
|
Spirea tomentosa
|
Steeple Bush
|
2 to 3 feet
|
Spirea vanhouttei
|
Vanhoutte Spirea
|
3 to 4 feet
|
Spirea bumalda 'Anthony Waterer'
|
Anthony Waterer Spirea
|
18 to 24 inches
|
Spirea nipponica 'Snowmound'
|
Snowmound Spirea
|
18 to 24 inches
|
Syringa vulgaris
|
Common Purple Lilac
|
5 to 6 feet
|
Taxus baccata repandens
|
English Yew
|
18 to 24 inches
|
Taxus cuspidata densiformis
|
Dense Yew
|
3 1/2 to four feet
|
Taxus media hicksi
|
Hicks Yew
|
18 to 24 inches
|
Thuja occidentalis
|
American Arborvitae
|
4 to 5 feet
|
Thuja occidentalis nigra
|
Dark American Arborvitae
|
5 to 6 feet
|
Vaccinium corymbosum
|
Highbush Blueberry
|
2 to 3 feet
|
Viburnum burkwoodi
|
Burkwood Viburnum
|
18 to 24 inches
|
Viburnum dentatum
|
Arrowwood
|
2 to 3 feet
|
Viburnum prunifolium
|
Blackhaw Viburnum
|
4 to 5 feet
|
Viburnum rhytidophyllum
|
Leatherleaf Viburnum
|
5 to 6 feet
|
Viburnum tomentosum
|
Doublefile Viburnum
|
5 to 6 feet
|
Table 6
|
---|
Trees and Shrubs Recommended for Wet Conditions
|
Botanical Name
|
Common Name
|
Minimum Planting Size
|
---|---|---|
Acer negundo
|
Boxelder
|
2 to 2 1/2-inch caliper
|
Acer rubrum
|
Red Maple
|
3 to 3 1/2-inch
|
Acer saccharinum
|
Silver Maple
|
3 to 3 1/2-inch
|
Alnus serrulata
|
Smooth Alder
|
2 to 2 1/2-inch
|
Amelanchier alleghiensis
|
Allegheny Serviceberry
|
2 1/2 to 3-inch
|
Amelanchier canadensis
|
Shadblow (Downy Serviceberry)
|
2 1/2 to 3-inch
|
Aronia arbutifolia
|
Red Chokeberry
|
2 to 3 feet
|
Aronia melanocarpa
|
Black Chokeberry
|
2 to 3 feet
|
Betula nigra
|
River Birch
|
10 to 12 feet
|
Betula populifolia
|
Gray Birch
|
10 to 12 feet
|
Celphalanthus occidentalis
|
Buttonbush
|
2 to 3 feet
|
Clethra alnifolia
|
Summersweet
|
18 to 24 inches
|
Cornus amomum
|
Silky Dogwood
|
3 to 4 feet
|
Cornus sericea
|
Red Osier Dogwood
|
3 to 4 feet
|
Ilex glabra
|
Inkberry Holly
|
18 to 24 inches
|
Ilex verticillata
|
Winterberry Holly
|
18 to 24 inches
|
Itea virginica
|
Virginia Sweetspire
|
12 to 15 inches
|
Lindera benzoin
|
Spicebush Sweetspire
|
18 to 24 inches
|
Liquidambar styraciflora
|
Sweetgum
|
3 to 3 1/2-inch
|
Magnolia virgineana
|
Sweetbay Magnolia
|
6 to 8 feet
|
Nyssa sylvatica
|
Black Gum
|
2 to 2 1/2-inch
|
Platanus occidentalis
|
American Sycamore
|
2 1/2 to 3-inch
|
Quercus bicolor
|
Swamp White Oak
|
2 1/2 to 3-inch caliper
|
Quercus palustris
|
Pin Oak
|
3 to 3 1/2-inch
|
Salix discolor
|
Pussy Willow
|
3 to 4 feet
|
Salix babylonica
|
Weeping Willow
|
3 to 3 1/2-inch
|
Salix nigra
|
Black Willow
|
2 to 2 1/2-inch
|
Sambucus canadensis
|
Elderberry
|
2 to 3 feet
|
Vaccinium corymbosium
|
Highbush Blueberry
|
2 to 3 feet
|
Viburnum dentatum
|
Arrowwood Viburnum
|
2 to 3 feet
|
Viburnum trilobum
|
American Cranberry Bush
|
4 to 5 feet
|
Table 7
List of Invasive Species
| |
---|---|
Botanical Name
|
Common Name
|
Pyrus calleryana 'Bradford'
|
Bradford Pear
|
Acer platanoides
|
Norway maple
|
Paulownia tomentosa
|
Princess Tree
|
Ailanthus altissima
|
Tree of Heaven
|
Table 8
|
---|
Required Minimum Buffer Widths
|
Adjacent Land Uses (feet)
| |||||||
---|---|---|---|---|---|---|---|
Proposed Land Use
|
Agriculture
|
Residential
Type A(1)
|
Residential
Type B(2)
|
Retail
|
Professional
Office
|
Other office
|
Institutional
/ Quasi-public
|
Agriculture
|
None
|
100 ft.
|
100 ft.
|
50 ft.
|
50 ft.
|
50 ft.
|
50 ft.
|
Residential
|
100
|
None
|
25 ft.
|
40 ft.
|
25 ft.
|
50 ft.
|
50 ft.
|
Type A1
| |||||||
Residential TypeB2
|
100
|
50 ft.
|
None
|
25 ft.
|
25 ft.
|
50 ft.
|
50 ft.
|
Retail: Neighbor-
hood Commercial
|
N/A
|
20 ft.
|
20 ft.
|
None
|
15 ft.
|
None
|
None
|
Other retail
|
50 ft.
|
40 ft.
|
40 ft.
|
None
|
15 ft.
|
25 ft.
|
None
|
Professional office
|
50 ft.
|
25 ft.
|
25 ft.
|
15 ft.
|
None
|
None
|
None
|
Other office
|
50 ft.
|
50 ft.
|
50 ft.
|
25ft.
|
None
|
None
|
None
|
Institu-
tional/ Quasi-public
|
50 ft.
|
50 ft.
|
50 ft.
|
None
|
None
|
None
|
None
|
Industrial
|
50 ft.
|
100 ft.
|
100 ft.
|
25 ft.
|
25 ft.
|
25 ft.
|
25 ft.
|
NOTES:
1 Residential Type
A equals single-family detached, duplex and semidetached dwellings.
2 Residential Type
B equals all other dwellings except those in institutional settings,
i.e., residential health-care facilities, skilled nursing facilities
and assisted living facilities. The institutional category shall apply
to these exceptions.
|
Table 9
|
---|
Minimum Plant Density for Buffers
|
Minimum Number of Required Plant Types
per
100 Lineal Feet
| ||||
---|---|---|---|---|
Required Buffer Width
(feet)
|
Large or Medium Trees
|
Small or Ornamental Trees
|
Evergreens and Conifers
|
Shrubs
|
151
|
3
|
4
|
9
|
20
|
20
|
4
|
6
|
10
|
24
|
25
|
5
|
8
|
15
|
30
|
40
|
6
|
9
|
18
|
36
|
50
|
8
|
12
|
24
|
48
|
1002
|
10
|
15
|
30
|
60
|
NOTES:
1 Buffers of this
width or less shall incorporate an opaque fence or wall.
2 Twenty thorny understory,
38 thorny shrubs, 34 hedgerow shrubs and six large trees per 100 lineal
feet may substitute for an agricultural buffer.
|
Table 10
|
---|
Allowable Reductions in Buffer Widths
and Plant Densities
|
Required Buffer Width
(feet)
|
Reduced Buffer Width With Fence1 or Wall
(feet)
|
Allowed Reduction in Number of Plants
Required in Table 7 with Fence or Wall2
|
---|---|---|
15
|
None
|
None
|
20
|
15
|
20%
|
25
|
20
|
20%
|
40
|
30
|
25%
|
50
|
40
|
25%
|
100
|
75
|
None
|
NOTES:
1 Fence or wall shall
be opaque and sufficient to visually obstruct the view of persons
at ground level.
2 Allowed reduction
shall be evenly distributed over all required plant types.
|
Angle of Parking Space
|
One-Way Aisle
(feet)
|
Two-Way Aisle
(feet)
|
---|---|---|
90°
|
22
|
24
|
60°
|
18
|
20
|
45°
|
15
|
20
|
30°
|
12
|
18
|
Parallel
|
12
|
18
|
Where the angle of parking is different on both
sides of the aisle, the larger aisle width shall prevail.
|
Traffic Lanes
| |||||||
---|---|---|---|---|---|---|---|
Type of Street
|
Right-
of-
Way Width
(feet)
|
Maxi-
mum Allow-
able Grade2
(percent)
|
No.
|
Width
(feet)
|
Shoulder Width Within Gutters
(feet)
|
Width c.s. Gutters on Each Side1
(feet)
|
Width Be-
tween Gutters and Curbs
(feet)
|
Arterial
|
80
|
7
|
2 and 2
|
12 and 13
|
—
|
15
|
50
|
Collector
|
66
|
8
|
2
|
12
|
8
|
13
|
40
|
Local (primary)
|
50
|
9
|
2
|
15
|
—
|
10
|
30
|
Local (minor)
|
50
|
10
|
2
|
123
|
—
|
13
|
24
|
NOTES:
1 Shall be grass
stabilized topsoil, minimum four inches thick.
2 No on-street parking
shall be permitted.
3 Except at intersections,
where the maximum grade shall not exceed 4%. In addition, no street
shall have a grade less than 1%.
|
Type of Street
|
Radius Requirement
(feet)
|
---|---|
Arterial
|
40
|
Collector
|
35
|
Local
|
30
|