Q=AIR,
| ||
Where:
| ||
"Q" is the required capacity in cubic feet per second for the
collection system at the point of design.
| ||
"A" is the tributary drainage area in acres and shall include
areas tributary from outside sources as well as from within the subdivision
itself.
| ||
"I" is the rainfall intensity in inches per hour and shall be
determined from Rainfall Intensity Duration Curves for New Jersey,
as prepared by the New Jersey Department of Transportation.
| ||
"R" is the coefficient of runoff applicable to the area based
upon soil conditions, average slope of the area and degree of ultimate
area development. In no case shall "R" equal less than .30.
|
Land Use Type
|
Runoff Coefficients
| |||
---|---|---|---|---|
Business
| ||||
Downtown area
|
0.70 to 0.95
| |||
Neighborhood area
|
0.50 to 0.70
| |||
Design commercial centers
|
0.35 to 0.50
| |||
Residential
| ||||
Single-family areas
|
0.30 to 0.50
| |||
Multifamily areas
|
0.60 to 0.75
| |||
Residential (suburban)
|
0.25 to 0.40
| |||
Planned industrial
|
0.50 to 0.80
| |||
Parks and cemeteries
|
0.10 to 0.25
| |||
Playgrounds
|
0.20 to 0.35
| |||
Unimproved areas
|
0.10 to 0.30
| |||
Surface type streets
| ||||
Asphalt
|
0.90 to 0.95
| |||
Concrete
|
0.90 to 0.95
| |||
Drives and walks
|
0.75 to 0.85
| |||
Roofs
| ||||
Lawns, sandy soil
| ||||
Flat, grade of 2%
|
0.05 to 0.10
| |||
Average, grade of 2% to 7%
|
0.10 to 0.15
| |||
Lawns, heavy soil
| ||||
Flat, grade of 2%
|
0.18 to 0.22
| |||
Average, grade of 2% to 7%
|
0.18 to 0.22
|
Using the above runoff coefficients, composite coefficients
shall be calculated for use in the form sewer design.
|
New Jersey Twenty-Four Hour Rainfall
County of Atlantic
(inches)
| |||||||
---|---|---|---|---|---|---|---|
1-year
|
2-year
|
5-year
|
10-year
|
25-year
|
50-year
|
100-year
| |
2.8
|
3.5
|
4.5
|
5.5
|
6.2
|
6.8
|
7.6
|
Suggested Landscape Plants for the City of Absecon City
| |
---|---|
Scientific Name
|
Common Name
|
Deciduous shade trees
| |
Acer Pseudoplatanus
|
Sycamore Maple
|
Acer Rubram
|
Red Maple
|
Amelanchier Candensis
|
Shadblow Serviceberry
|
Betula Populifolia
|
Gray Birch
|
Celtis Australis
|
European Hackberry
|
Crataegus Oxyacantha
|
English Hawthorn
|
Crataegus Crus-galli
|
Cockspur Hawthorn
|
Crataegus Phaenopyrum
|
Washington Hawthorn
|
Elaeagnus Augustifolia
|
Russian Olive
|
Fraxinus Pennsylvania
|
Green Asb
|
Fraxinus Pennsylvania Lanseolata
|
Marshall's Seedless Green
|
Marshall's Seedless
|
Ash
|
Ginkgo Biloba
|
Ginkgo
|
Gleditsia Triacanthos "inermis"
|
Thornless Honeylocust
|
Liquidambar Styraciflua
|
Sweetgum
|
Magnolia Virginia
|
Sweetbay Magnolia
|
Nyssa Svlvatics
|
Black Tupelo
|
Ostrya Virginia
|
Hop Hornbeam
|
Platanus X Acerifolia
|
London Plane
|
Populus Alba
|
White Popular
|
Pyrus Calleryana "Bradford"
|
Bradford Callery Pear
|
Quercus Alba
|
White Oak
|
Quercus Bicolor
|
Swamp White Oak
|
Quercus Palustris
|
Pin Oak
|
Quercus Phellos
|
Willow Oak
|
Quercus Rubra
|
Red Oak
|
Sassafras Albidum Officinale
|
Sassafras
|
Saliz Species
|
Willow Species
|
Sophora Japonica
|
Japanese Pagoda Tree
|
Tilia Cordata
|
Littleleaf Linden
|
Zelkova Serrata
|
Japanese Zelkova
|
Evergreen trees
| |
Cedrus Atlantica
|
Atlas Cedar
|
Chamaecyparis Thiodes
|
White Cedar
|
Ilex Opaca
|
American Holly
|
Juniperus Virginia
|
Eastern Red Cedar
|
Picea Species
|
Spruces
|
Picea Pungens Glauca
|
Colorado Blue Spruce
|
Pinus Mugo
|
Swiss Mountain Pine
|
Pinus Nigra
|
Austrian Pine
|
Pinus Rigida
|
Pitch Pine
|
Pinus Sylvestris
|
Scotch Pine
|
Pinus Thunbergii
|
Japanese Black Pine
|
Taxus Cuspidata
|
Japanese Yew
|
Thuja Occidentalis
|
American Arborvitae
|
Small trees
| |
Acer Ginnala
|
Amur Maple
|
Acer Palmatum
|
Japanese Maple
|
Amelanchier Canadensis
|
Shadblow Serviceberry
|
Betula Pendula
|
European Birch
|
Betula Populifolia
|
Gray Birch
|
Carpinus Caroliniana
|
American Hornbeam
|
Comus Florida
|
Flowering Dogwood
|
Comus Florida Rubra
|
Pink Flowering Dogwood
|
Comus Kousa
|
Japanese Dogwood
|
Comus Mas
|
Comelian-cherry Dogwood
|
Crateagus Crus-galli
|
Cockspur Thom
|
Crateagus Phaenopyrum
|
Washington Hawthorn
|
Elaeagnus Angustifolia
|
Russian Olive
|
Magnolia Soulangiana
|
Saucer Magnolia
|
Magnolia Stellata
|
Star Magnolia
|
Magnolia Virginiana
|
Sweetbay Magnolia
|
Malus Floribunda
|
Japanese Flowering Crab Apple
|
Malus X "Katherine"
|
Katherine Crab Apple
|
Malus X "Hopa"
|
Hopa Crab Apple
|
Malus Sargentii
|
Sargent Crab Apple
|
Malus X Zumi Calocarpa
|
Zumi Crab Apple
|
Ostrya Virginiana
|
Hop Hornbeam
|
Phellodendron Amurense
|
Amur Cork Tree
|
Prunus Sargentii
|
Sargent Cherry
|
Prunus Serrulata "Kwanzan"
|
Kwanzan Cherry
|
Prunus Serotina
|
Wild Black Cherry
|
Prunus Subhirtella Pendula
|
Weeping Cherry
|
Prunus Virginiana
|
Chokecherry
|
Prunus Yedoensis
|
Yosbino Cherry
|
Pyrus Calleryana "Bradford"
|
Bradford Callery Pear
|
Sophora Japonica
|
Japanese Pagoda Tree
|
Styrax Japonica
|
Japanese Snowbell
|
Evergreen shrubs
| |
Berberis Species
|
Barberry
|
Ilex Species
|
Holly
|
Juniperus Species
|
Junipers
|
Kalmia Latifolia
|
Mountain Laurel
|
Leucothoe Species
|
Leucothoe
|
Mahonia Species
|
Mahonia
|
Myrica Pennsylvanica
|
Bayberry
|
Pieris Floribunda
|
Mountain Andromeda
|
Pieris Japonica
|
Rhondodendrons
|
Rhododendron Species
|
Yews
|
Taxus Cuspidata
|
Japanese Yew
|
Deciduous shrubs
| |
Abelia X Grandiflora
|
Glossy Abelia
|
Amelanchier Species
|
Serviceberries
|
Aronia Arbutiflia
|
Red Chookberry
|
Berberis Species
|
Barberry
|
Clethra Alnifolia
|
Summersweet
|
Cornus Stolinifera
|
Redosier Dogwood
|
Cotoneaster Species
|
Cotoneasters
|
Euonymus Bungeanus
|
Winterberry
|
Ilex Species
|
Ilexes
|
Ligustrum Species
|
Privet
|
Lonicera Species
|
Honeysuckles
|
Prunus Maritima
|
Beach Plum
|
Rhus Typhina
|
Staghorn Sumax
|
Rosa Species
|
Roses
|
Spirea Species
|
Spireas
|
Syringa Species
|
Lilacs
|
Vaccinium Species
|
Blueberries
|
Viburnum Species
|
Viburnums
|
Groundcover
| |
Arctostaphylos uva-ursi
|
Bearberry
|
Cotoneaster Horizontalis
|
Rock Cotoneaster
|
Cotoneaster Apiculata
|
Cranberry Cotoneaster
|
Hedera Helix
|
English Ivy
|
Hemerocallis Fulva
|
Common Daylily
|
Juniperus Species
|
Junipers
|
Juniperus Horizontalis
|
Creeping Juniper
|
Juniperus Horizontalis "Plumosa"
|
Andorra Juniper
|