A.
Street-space.
(1)
The Urban Space Standards apply to the development of street-space
as well as the reconstruction of existing streets and other public
(and publicly accessible) spaces.
(2)
The Urban Space Standards establish the rules and standards
for the street-space or public realm (especially streets and sidewalks).
A.
Urban space and walkability.
(1)
Although commonly thought of as just squares, greens, plazas
or parks, the urban space includes the complete street-space. The
street-space is the public domain between the building facades: the
travel lanes between the curbs as well as the sidewalks.
(2)
The coherent definition of the street-space should be ensured
via the Regulating Plan and Building Form Standards to assist residents,
building owners, and managers with understanding the relationship
between the street-space and their own lots.
(3)
Walkable Main Street in Collinsville
Walkable Main Street in Collinsville
These are streets - not highways, arterials, or collectors and
must be developed as such to create pedestrian-oriented places. "Walkable"
streets that are comfortable, efficient, safe, and interesting.
(4)
Streets must balance the needs of all forms of traffic - auto,
transit, bicycle, and pedestrian to maximize mobility and convenience
for all Town residents and visitors. The character will vary depending
on their location: some streets will carry a large volume of traffic
while others provide a more active and intense urban pedestrian experience.
(5)
Streets should contribute to environmental sustainability. Native
trees and plants contribute to privacy, the reduction of noise and
air pollution, shade, maintenance of the natural habitat, conservation
of water, and rainwater management.
(6)
Property frontages and facades are part of the public realm,
literally forming the walls of the public street-space and are therefore
subject to more regulation than the other portions of the private
property.
A.
Principles.
(1)
Overall function, comfort, safety and aesthetics of a street
are more important than efficiency alone. To design solely for continuous
free-flowing traffic creates situations where vehicles will travel
at speeds greater than desirable for pedestrians.
(2)
Street design should take into consideration what is reasonably
foreseeable, not every situation that is conceivably possible. Designing
a street to facilitate (rather than accommodate) infrequent users
may actually be the wrong design for the frequent users of the space.
(3)
With appropriate design techniques, drivers will choose slower
speeds and less aggressive behavior, not typically achieved through
speed limit signage/postings alone. For example, on-street parking
slows traffic and acts as a buffer between moving vehicles and pedestrians.
(4)
An interconnected street network allows traffic capacity to
be diffused and maintained across numerous streets.
(5)
Emergency vehicle access must be maintained, but with an interconnected
street network, there will always be at least two routes of access
to any lot or parcel.
(6)
In a pedestrian-oriented area, nonvehicular traffic should be
provided with every practical advantage so long as safety is not adversely
affected.
(7)
When the street design creates a conflict between the vehicular
and nonvehicular user, it should be resolved in favor of the nonvehicular
user unless public safety will be truly jeopardized by the resolution.
A.
General provisions.
(2)
Mechanical and electrical equipment, including, but not limited
to, air compressors, pumps, exterior water heaters, rain barrels,
private garbage cans (not including public sidewalk waste bins), and
storage tanks may not be stored or located within any street-space.
(Not visible water pumps are not included in this prohibition. Temporary
placement of private garbage cans within the street-space may be allowed
to accommodate scheduled pick-up.)
B.
Street trees.
(1)
Each street-space must have street trees planted as shown in
the Street Type Recommendations - generally three to 3 1/2 feet
from the back of the curb at an average spacing not greater than 30
feet on center (calculated per block face). Where necessary, spacing
allowances may be made to accommodate curb cuts, fire hydrants, and
other infrastructure elements; however, at no location shall street
tree spacing exceed 45 feet on center.
(2)
At an intersection, street trees must be set back from the perpendicular
curb a minimum of 30 feet to maintain vehicular sight lines.
(3)
Required tree planting area minimum specifications are as follows:
(a)
Soil surface area shall not be less than 50 square feet per
isolated tree or 30 square feet per tree for connected tree lawn situations.
(b)
No dimension of the soil surface area may be less than five
feet.
(c)
These requirements may be met through the use of bridged slab,
structural soil, or other techniques that clearly exceed these standards
in the fostering of vital and long-lived street trees.
(4)
Street tree planting areas shall be at grade or not greater
than six inches in height above or below the sidewalk.
(5)
Street trees must be "limbed up" as they gain appropriate maturity
so as to not interfere with pedestrian or truck travel (minimum eight
feet clear over the sidewalk and 14 feet over the travel lanes of
the street) and to maintain visibility.
(6)
At planting, street trees shall be at least 2.5 inches in diameter at breast height and at least 10 feet in overall height. Species must be selected from the street tree list (see § 470-1407, Tree lists). Consult with the ZEO for the designated tree species for a particular street-space.
(7)
Any unpaved ground area shall be planted with ground cover or
flowering vegetation not to exceed 12 inches in height.
C.
Streetscape elements.
(1)
Streetlights shall be installed on both sides of streets and,
unless otherwise designated on the Regulating Plan, at intervals of
not more than 80 feet, measured parallel to the street.
(2)
Streetlights shall be between nine and 15 feet aboveground in
height.
(3)
At the time of development, the developer is encouraged to install
streetlights and sidewalks, as illustrated in the street type recommendations
and coordinated with the Town, on the side of the street-space being
developed.
(4)
Sidewalks not otherwise designated in the Regulating Plan or
Street Type Recommendations shall be a minimum of five feet wide and
be constructed to meet all Town, state, and federal specifications.
(5)
Street furnishings such as trash cans and benches, should be
designed into the site plan, not added as an afterthought, and be
simple, functional, and durable. Street furnishings may be located
in the dooryard area or in alignment with the street trees except
in the situation of a continuous tree lawn.
A.
Intent.
(1)
These standards apply upon development of or redesign/reconfiguration
of those open spaces that are either publicly owned or publicly accessible,
as designated on the Regulating Plan. This section does not apply
to private open space within the buildable area on a lot.
(2)
Civic spaces, such as greens and plazas, should be situated
at prominent locations within each neighborhood and should be dedicated
to important events or citizens. The green plants and trees of civic
spaces should provide a landscape that complements the surrounding
private building architecture.
B.
Standards.
(1)
Civic spaces shall have at least 60% of their perimeter fronting
rights-of-way and shall be surrounded by street trees. Their dimensions
shall be no narrower than a 1:5 ratio and no space width or breadth
dimension shall be less than 25 feet.
(2)
A clear view through the civic space (from two to eight feet
in height) is required for visibility and safety.
(3)
Civic spaces may not include active recreation structures such
as ball fields and courts.
C.
Materials and configurations.
(1)
The ground surface level elevation should be between zero and
18 inches above the top of the adjacent curb.
(2)
The maximum slope across any civic space may not exceed 10%.
(3)
Asphalt is prohibited within a civic space.
(4)
Surface treatment and materials (excluding any civic use building,
public art, or monument footprint) shall be a minimum 50% unpaved
pervious surface area.
(5)
Pedestrian pathways shall be a common access easement or public
right-of-way. The easement width for these pathways must not be less
than 10 feet with a paved walkway not less than six feet wide and
must provide an unobstructed view straight through its entire length,
except where otherwise specified on the Regulating Plan.
Canton Village Green civic space surrounded by street trees.
At least one tree per 800 square feet of any at-grade required
private open space shall be planted in the rear lot area and located
no closer than five feet to any common lot line.
The following list contains all approved tree species for use
in a design village district. The list includes native and acceptable
adapted species. Other species may be used for planting within a private
lot. Invasive exotic species may not be used in any location.
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Street Trees
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Acer buergerianum
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Trident Maple
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Acer campestre
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Hedge Maple
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Aesculus octandra (flava)
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Yellow Buckeye
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Aesculus x carnea
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Red Horsechestnut
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Betula nigra
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River Birch
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Celtis occidentalis
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Common Hackberry
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Cercidiphyllum japonicum
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Katsura Tree
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Corylus colurna
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Turkish Filbert
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Crataegus 'x lavallei,' 'x mordenensis Toba,' 'phaenopyrum,'
' viridis Winter King'
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Hawthorn varietals
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Fraxinus americana 'Autumn Purple'
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White Ash
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Fraxinus excelsior
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Blue Ash
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Fraxinus pennsylvanica 'Marshall's Seedless', 'Newport', 'Patmore',
'Summit', 'Urbanite'
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Green Ash varietals
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Ginkgo biloba, 'Fastigiata,' 'Sentry'
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Ginkgo, varietals (male only)
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Liquidambar styracifolia
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Sweetgum
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Platanus acerifolia 'Bloodgood'
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London Plane tree
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Quercus coccinea
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Scarlet Oak
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Quercus palustris
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Pin Oak
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Quercus phellos
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Willow Oak
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Quercus rubra
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Red Oak
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Quercus robur, 'Concordia,' 'Fastigiata'
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English Oak, varietals
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Quercus x shumardii
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Shumard Oak
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Sophora japonica 'Fastigiata'
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Fastigiate Scholar Tree
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Tilia Americana 'Redmond'
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Redmond American Linden
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Tilia cordata, 'Chancellor', 'Glenleven', 'Greenspire'
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Littleleaf Linden, varietals
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Tilia tomentosa
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Silver Linden
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Tilia x euchlora
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Crimean Linden
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Ulmus 'Homestead,' 'Pioneer,' 'Urban Elm'
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Elm varietals
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Ulmus parvifolia
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Lacebark Elm
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Zelkova serrata, 'Halka,' 'Village Green'
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Zelkova, varietals
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From http://www.hort.uconn.edu/ipm/homegrnd/htms/32ctttree.htm
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