form-based code project (alexander street)
DESCRIPTION
This document prescribes a form-based code for the Alexander Street Corridor in Princeton, NJ. (Student project)TRANSCRIPT
Alexander Street“Moving People, Making Places”
Princeton, NJMay 15, 2010 1
Ale
xand
er
Alexander Street Corridor
Alexander Street“Moving People, Making Places”2
Ale
xand
er
Table of contents:
A - 1 Introduction ........................................................ 3 A - 2 Vision and Plan .................................................. 8A - 3 Form Based Code
A.3.1 .....Public Space Standards .......................... 10 A.3.2 ..... Thoroughfare Standards ........................ 12 A.3.3 ..... Building Standards ............................... 16 A.3.4 ..... Parking Standards ................................ 20 A.3.5 ..... Architectural Standards ......................... 22
A - 4 Circulation Plan ................................................. 24A - 5 Illustrative Concept ........................................... 25A - 6 Conclusion .......................................................... 28
Alexander Street“Moving People, Making Places”
Princeton, NJMay 15, 2010 3
Ale
xand
er
A-1 Introduction
SpringdaleGolf Club
Institute for Advanced Study
LawrenceApartments
HibbenApts.
Magie Apts.
PrincetonTheological Seminary
Princeton University
Turning Basin Park
Carn
egie
Lak
e
Commercial
Residential
Institutional
Proposed Arts & Transit Neighborhood
WaterParking Dinky Station
Legend
The Corridor � Alexander Street is one of the main corridors leading to
downtown Princeton � Due to its location along the rail line, Alexander Street
once functioned as a service corridor. While some service oriented businesses remain, today the corridor is mixed use, including office, commercial and residential uses. � Shallow wide lots isolated from each other by curb cuts
and to the surrounding areas by the Dinky Right-of-Way and the golf course.
Above: Aerial of proposed site for the Alexander Street BRT Station
Context Map
Alexander Street“Moving People, Making Places”4
Ale
xand
er
A-1 Introduction
What Works1. Great views of the golf course, campus, and sur-rounding woods
2. Proximity to water and natural areas � Access the East Coast Greenway and D&R Canal
3. Nice curve in the road as one enters the Corridor from the South
From left to right: Old Graduate College tower across golf course, deer spotted near creek, and the bend in Alexander Street when entering Princeton.
Alexander Street“Moving People, Making Places”
Princeton, NJMay 15, 2010 5
Ale
xand
er
A-1 Introduction
What Doesn’t WorkPoor pedestrian environment
1. Disconnected sidewalks
2. Frequent curb cuts
3. No parkway to separate people from cars along some areas of the street
4. No consistent street wall or sense of enclosure � Variations in setbacks, parking located in the front of
some buildings
5. Wide Travel lanes encourage speeding
Under utilized land
1. Too much parking
2. Wide lots (up to 500’) create dead zones
3. Lack of parks for public use
Clockwise from top left: Make-shift pedestrian walkway; frequent curb cuts; lack of parkways; current buildings create dead zone; unused parking; and inconsistent street wall.
Alexander Street“Moving People, Making Places”6
Ale
xand
er
A-1 Introduction
Main IdeaThe Alexander Street Corridor is a gateway into the town of Princeton as well as a destination for food, fun, and entertainment for families, students, residents, and visitors.
Design Principles1. Public Realm: Plazas and shared space that serve as the community’s living room.
2. Accessibility: Streets accommodate all users and modes. Connection to transit provides convenient access to places throughout Princeton.3. Diversity: A variety of building types, street types, public spaces and land uses.
4. Sensitivity: Respects the surrounding community and environment.
5. Destination: A mix of uses and activities that attract people of all ages and backgrounds.
From top right clockwise: Cafe in Washington D.C.; Wave Field in Ann Arbor, MI; Food Kiosks in Portland, OR; Book Market in Leiden, Holland. Source: Flickr 2010
Alexander Street“Moving People, Making Places”
Princeton, NJMay 15, 2010 7
Ale
xand
er
A-1 Introduction
Extra Street Width � Alexander Street is unnecessary wide. Its width
provides many opportunities for widening sidewalks, increasing on-street parking, implementing traffic calming programs, planting additional trees and reducing the heat island effect.
Above: Intersection of Faculty and Alexander
Proximity to Arts & Transit Neighborhood � Princeton University’s proposed Arts & Transit
neighborhood on the north end of the Alexander Street Corridor will create a public space that is a nexus of both campus and community life. The entire Alexander Street Corridor should share this vision.
Opportunities
Above: Rendering of community space in Princeton’s Arts and Transit Neighborhood. Source: www.princeton.edu
Alexander Street“Moving People, Making Places”8
Ale
xand
er
VisionA-2The images below capture the general condition of the Alexander corridor and attempt to illustrate potential concepts for cre-ating a place that fosters community, creates a gateway into Princeton, and improves movement throughout the area for both pedestrians, bicyclists, and vehicular traffic. The letters correspond to locations on the site plan located on the following page.
Exis
ting
Prop
osed
The Helm Building parking lot could be lined with temporary uses similar to the food kiosks lining a parking lot in Port-land, Oregon shown in the picture above. Not only would food kiosks bring people to the area, they provide an opportunity for business owners who cannot afford space in downtown Princeton.Bottom image source: Flickr 2010
This intersection provides the essential foundation for what is needed to be the station stop on the new BRT line. It allows access to the graduate housing, D&R Canal, and will help the site reach its full potential to provide access to a wide range of services and goods not currently available. Bottom image: Train station and plaza at Forest Hills Gardens, Queens. Image source: Flickr 2010
Not only does the Dinky act as a barrier between Alexander Street and the surrounding area, rail tracks can be dangerous to cross, especially for children. Converting it to a busway would mean there would be additional space for bike and pedestrian paths, giving users numerous multi-modal options as well as reconnecting the community. Bottom image source: Jim Constantine
Princeton has a special sense of place and community. Placing a tower at the entrance to town would give residents and visitors the sense that they are entering an educational, cultural and commercial center as well as the site of world-renowned institutions.
Alexander Street“Moving People, Making Places”
Princeton, NJMay 15, 2010 9
Ale
xand
er
Site PlanA-2
LegendProposed shared spaceProposed buildings
Existing building
Proposed temporary uses
Parking and roads
Transit route
Existing residential
Alexander Street“Moving People, Making Places”10
Ale
xand
er
Sha
red
Spa
ceIn
tera
ctive
Spa
ce
� Special paving such as scored concrete, stone pavers, brick pavers, or concrete unit pavers shall be used for shared space.
Public Space StandardsA-3.1In
form
al S
pace
� Shared space shall consist of special paving, such as scored concrete, stone pavers, brick pavers, or concrete unit pavers. � Shared space shall be located
near activity centers. � Bollards and/or planters
separate the shared space from the pedestrian only areas.
� Interactive space shall be separated from shared space by bollards and/or planters. � Water fountains and other
features characterize this space. � Interactive space is for play
and activity.
� Movable chairs and furniture shall be provided in informal space. � Umbrellas and/or trees shall
provide shade in this area.
Alexander Street“Moving People, Making Places”
Princeton, NJMay 15, 2010 11
Ale
xand
er
Park
Spa
ceBuf
fer
Spa
cePublic Space StandardsA-3.1
� Park space shall be primarily open lawn to accommodate various functions. � This space is characterized
by a lawn, benches, and ornamental flowering trees that define the edges of the space.
� Buffer space can function as wetlands, education and interpretive area, and wildlife habitat. � The buffer space can be
enhanced with a boardwalk and a path system to allow users to move through the space and to get closer to Carnegie Lake.
Alexander Street“Moving People, Making Places”12
Ale
xand
er
Shared Space? NoCapacity Type* medium capacityDesign Speed* 35 mphPedestrian Crossing Time 8-11 seconds
Right-of-Way (ROW) Width 60'Curb Face to Curb Face Width 38'
Traffic Lanes 11'Bicycle Lanes NoneParking Lanes Both sides @ 8' parallelMedians None
Curb Height 6"Planting Strip (Parkway)
Landscape Type
Walkway Type
Curb Radius 15'Distance between intersections Varies *Refers to Automobiles
Application
Overall Widths
Lanes
Edges
Intersection Type
5' continuous along northbound side, southbound side same as existing20-30' intervals centered in tree pitsSidewalk, min. 6' on northbound side, keep path along southbound side
Thoroughfare StandardsA-3.2Alexander Street
(primary road)Shared Space? NoCapacity Type* medium capacityDesign Speed* 35 mphPedestrian Crossing Time 8-11 seconds
Right-of-Way (ROW) Width 60'Curb Face to Curb Face Width 38'
Traffic Lanes 11'Bicycle Lanes NoneParking Lanes Both sides @ 8' parallelMedians None
Curb Height 6"Planting Strip (Parkway)
Landscape Type
Walkway Type
Curb Radius 15'Distance between intersections Varies *Refers to Automobiles
Application
Overall Widths
Lanes
Edges
Intersection Type
5' continuous along northbound side, southbound side same as existing20-30' intervals centered in tree pitsSidewalk, min. 6' on northbound side, keep path along southbound side
Alexander Street“Moving People, Making Places”
Princeton, NJMay 15, 2010 13
Ale
xand
er
Lawrence RoadThoroughfare StandardsA-3.2
(shared space)
Shared Space? YesCapacity Type* Low CapacityDesign Speed* 15 mphPedestrian Crossing Time N/A
Right-of-Way (ROW) Width 70'Curb Face to Curb Face Width N/A
Shared Space 30'Bicycle & Ped Only 20'Parking Lanes No ParkingMedians None
Curb Height N/AGround Treatment SpecialBollard Treatment Lining shared space
Curb Radius 15'*Refers to Automobiles
Intersection Type
Application
Overall Widths
Dimensions
Edges
Shared Space? YesCapacity Type* Low CapacityDesign Speed* 15 mphPedestrian Crossing Time N/A
Right-of-Way (ROW) Width 70'Curb Face to Curb Face Width N/A
Shared Space 30'Bicycle & Ped Only 20'Parking Lanes No ParkingMedians None
Curb Height N/AGround Treatment SpecialBollard Treatment Lining shared space
Curb Radius 15'*Refers to Automobiles
Intersection Type
Application
Overall Widths
Dimensions
Edges
Alexander Street“Moving People, Making Places”14
Ale
xand
er
BEAT (below Arts & Transit) StreetThoroughfare StandardsA-3.2
(access way/ secondary road)
Shared Space? YesCapacity Type*Design Speed* 10 mph (one-way traffic)Pedestrian Crossing Time N/A
Right-of-Way (ROW) Width 26'Curb Face to Curb Face Width N/A
Shared Space 14'Bicycle & Ped Only 6'Parking Lanes NoneMedians None
Curb Height N/AGround Treatment SpecialBollard Treatment Lining shared space
Curb Radius 15'*Refers to Automobiles
Intersection Type
Low Capacity
Application
Overall Widths
Dimensions
Edges
Alexander Street“Moving People, Making Places”
Princeton, NJMay 15, 2010 15
Ale
xand
er
BRTThoroughfare StandardsA-3.2
(separated busway)
Shared Space NoneCapacity Type Designated busway with
separated bicycle and pedestrian paths
Design Speed* 35 mphPedestrian Crossing Time N/A
Right-of-Way (ROW) Width 60'Curb Face to Curb Face Width N/A
BRT Lane 12'Bicycle Lane 6'Walking/Running Lane 6'
Median7' between bus and bicycle lanes
Curb Height N/APlanting Strip (Parkway)
Curb Height N/A
Ground TreatmentTextured material at crosswalks
Application
Overall Widths
Lanes
Edges
Edges
7' - 10'
Shared Space NoneCapacity Type Designated busway with
separated bicycle and pedestrian paths
Design Speed* 35 mphPedestrian Crossing Time N/A
Right-of-Way (ROW) Width 60'Curb Face to Curb Face Width N/A
BRT Lane 12'Bicycle Lane 6'Walking/Running Lane 6'
Median7' between bus and bicycle lanes
Curb Height N/APlanting Strip (Parkway)
Curb Height N/A
Ground TreatmentTextured material at crosswalks
Application
Overall Widths
Lanes
Edges
Edges
7' - 10'
Alexander Street“Moving People, Making Places”16
Ale
xand
er
4-6 Downtown Mixed Use Master PlanOpticos Design, Inc.
Chapter 4: Form-Based Code
Property Line
Build-to Line (BTL)
Setback Line
Building Area
Building Placement
Build-to Line (Distance from Property Line)
Front 0'
Side Street 0'
Setback (Distance from Property Line)
Side 0'
Rear
Adjacent to NG Zone 8'
Adjacent to any other Zone 5'
Building Form
Primary Street Façade built to BTL 80% min.*
Side Street Façade built to BTL 30% min.*
Lot Width 125' max.
Lot Depth 100' max.
*Street façades must be built to BTL along first 30' from every corner.
Notes
All floors must have a primary ground-floor entrance that
faces the primary or side street.
Loading docks, overhead doors, and other service entries are
prohibited on street-facing façades.
Any building over 50' wide must be broken down to read as a
series of buildings no wider than 50' each.
1" = 15'-0"
Key
Sidewalk
Primary Street
Side
Stre
et
BTL, Property Line
BTL,
Pro
pert
y Lin
e
G
A
D
B
H
NI
KOJ
M
E
F
Property Line Street
C
A
I
C
B
D
D
E
F
G
H
K
K
J
L
M
N
Town Core (TC) Standards
O
L
Use
Ground Floor Service, Retail, or
Recreation, Education &
Public Assembly*
Upper Floor(s) Residential or Service*
*See Table 4.1 for specific uses. Ground floors that face the wa-
terfront shall be nonresidential and shall not include parking,
garages, or similar uses.
Height
Building Min. 22'
Building Max. 2.5 stories and 40'
Max. to Eave/Top of Parapet 35'
Ancillary Building Max. 2 stories and 25'
Finish Ground Floor Level 6" max. above sidewalk
First Floor Ceiling Height 12' min. clear
Upper Floor(s) Ceiling Height 8' min. clear.
Notes
Mansard roof forms are not allowed.
Any section along the BTL not defined by a building must be
defined by a 2'6" to 4'6" high fence or stucco or masonry wall.
Front BTL Decreases as one moves away from the intersection of Lawrence and Alexander.*
within 200' of intersection 20'within 300' of intersection 15'within 350' of intersection 10'beyond 350' of intersection 0-5'
Side Street 0'
Side 5'Rear 0'
Primary Street Façade built to BTL Building façades may step back a max. of 2' from the BTL for a max. of 25% of the building face along a block face.*
Side Street Façade built to BTL 30% min.*Façade Occupancy
Lot Width 125' max.Lot Depth 125' max.
Ground Floor Upper Floor(s)
**Exceptions are made for public space (i.e. plaza).Notes
Building PlacementBuild-to Line or BTL (Distance from Property Line)
*Porches, stoops, awnings, balconies, food carts and other temporary structures may project beyond the Build-to-Line.Setback (Distance from Property Line)
*Street façades must be built to BTL along first 30' from every corner.
Building Form
75% min. of BTL is building face.**
Buildings shall be located at block corners.
All floors must have a primary ground-floor entrance that faces the primary or side street. Secondary entrances may be located at the rear and side of buildings.
UseService, Retail, & EducationResidential or Service
Loading docks and other service entries are prohibited on street-facing façades.Any building over 50' wide must be broken down to read as a series of buildings no wider than 50' each.
Front BTL Decreases as one moves away from the intersection of Lawrence and Alexander.*
within 200' of intersection 20'within 300' of intersection 15'within 350' of intersection 10'beyond 350' of intersection 0-5'
Side Street 0'
Side 5'Rear 0'
Primary Street Façade built to BTL Building façades may step back a max. of 2' from the BTL for a max. of 25% of the building face along a block face.*
Side Street Façade built to BTL 30% min.*Façade Occupancy
Lot Width 125' max.Lot Depth 125' max.
Ground Floor Upper Floor(s)
**Exceptions are made for public space (i.e. plaza).Notes
Building PlacementBuild-to Line or BTL (Distance from Property Line)
*Porches, stoops, awnings, balconies, food carts and other temporary structures may project beyond the Build-to-Line.Setback (Distance from Property Line)
*Street façades must be built to BTL along first 30' from every corner.
Building Form
75% min. of BTL is building face.**
Buildings shall be located at block corners.
All floors must have a primary ground-floor entrance that faces the primary or side street. Secondary entrances may be located at the rear and side of buildings.
UseService, Retail, & EducationResidential or Service
Loading docks and other service entries are prohibited on street-facing façades.Any building over 50' wide must be broken down to read as a series of buildings no wider than 50' each.
Building StandardsA-3.3
Alexander Street“Moving People, Making Places”
Princeton, NJMay 15, 2010 17
Ale
xand
er
Ground Floor Service, Retail, & Education
Upper Floor(s) Residential or Service
Use
HeightBuilding Min. 2 stories & 25'Building Max. 5 stories & 70'Max. to Eave/Top of Parapet 35'Finish Ground Floor Level 6" max. above sidewalkFirst Floor Ceiling Height 12' min. clearUpper Floor(s) Ceiling Height 8' min. clear
Max. Height
Location
Tower Elements80', must be at least 1.5 stories above adjacent buildings.Tower elements are to be located at corners.
Expression Lines
Length
Block corners shall not have a lower height than any building on either Notes
Expression Lines
Full length of the façade
An expression line should delineate the division between the first story and the second story for all buildings along Alexander Street.
Block corners shall not have a lower height than any building on either block face.The tower element may exceed the maximum building height.
4-6 Downtown Mixed Use Master PlanOpticos Design, Inc.
Chapter 4: Form-Based Code
Property Line
Build-to Line (BTL)
Setback Line
Building Area
Building Placement
Build-to Line (Distance from Property Line)
Front 0'
Side Street 0'
Setback (Distance from Property Line)
Side 0'
Rear
Adjacent to NG Zone 8'
Adjacent to any other Zone 5'
Building Form
Primary Street Façade built to BTL 80% min.*
Side Street Façade built to BTL 30% min.*
Lot Width 125' max.
Lot Depth 100' max.
*Street façades must be built to BTL along first 30' from every corner.
Notes
All floors must have a primary ground-floor entrance that
faces the primary or side street.
Loading docks, overhead doors, and other service entries are
prohibited on street-facing façades.
Any building over 50' wide must be broken down to read as a
series of buildings no wider than 50' each.
1" = 15'-0"
Key
Sidewalk
Primary Street
Side
Stre
et
BTL, Property Line
BTL,
Pro
pert
y Lin
e
G
A
D
B
H
NI
KOJ
M
E
F
Property Line Street
C
A
I
C
B
D
D
E
F
G
H
K
K
J
L
M
N
Town Core (TC) Standards
O
L
Use
Ground Floor Service, Retail, or
Recreation, Education &
Public Assembly*
Upper Floor(s) Residential or Service*
*See Table 4.1 for specific uses. Ground floors that face the wa-
terfront shall be nonresidential and shall not include parking,
garages, or similar uses.
Height
Building Min. 22'
Building Max. 2.5 stories and 40'
Max. to Eave/Top of Parapet 35'
Ancillary Building Max. 2 stories and 25'
Finish Ground Floor Level 6" max. above sidewalk
First Floor Ceiling Height 12' min. clear
Upper Floor(s) Ceiling Height 8' min. clear.
Notes
Mansard roof forms are not allowed.
Any section along the BTL not defined by a building must be
defined by a 2'6" to 4'6" high fence or stucco or masonry wall.
Modern Tower Traditional Tower
Tower Elements should be placed at termination points and serve as locational references for residents and visitors
Building StandardsA-3.3
Alexander Street“Moving People, Making Places”18
Ale
xand
er
Modern Types Traditional Types
Forecourt
Awning
Stepback
Forecourt Depth Width Awning Depth Width
Bldg. Height(in stories) 1 2 3 4 5
2.0 100% 80 - 100% - - -2.5 100% 75 - 100% 40% - -3.0 100% 75 - 100% 55 - 85% 10% -4.0 100% 100% 70 - 90% 50 - 70% 20%4.5 100% 100% 85% 55% 45%5.0 100% 100% 95% 75% 70%
Stoops and porches are not preferred in in mixed-use buildings.
Allowed Frontage Types
4' min., not to exceed width 6' min., 30% of lot width max.
10' max.
NotesBuildings should step down to the street. Conversely, massing should step back from the build-to line with increasing heights. This reduces the perception of height from the ground.Breaks in plane on the fronts and sides of buildings are preferred.
Building Size & Massing ( Stepback Standards)Ratio of each Story
Awnings shall only cover storefronts and openings.
Building StandardsA-3.3
Alexander Street“Moving People, Making Places”
Princeton, NJMay 15, 2010 19
Ale
xand
er
Shared Space
Interactive Space
Ale
xand
er S
tree
t
Food CartsRetail
Notes
Hours of operation should be the same as existing establishments in the area. Standards for trash removal need to be established with the Township.Seating should be made available by the vendors at a min. of 5 seats per establishment in adjacent parking stall or sidewalk.
Vendors need to obtain necessary permits. Stands & Carts cannot encroach on sidewalks or driving lane
DimensionsCarts and stands should be no larger than 2 parking stalls or 16-20' x 18'
Temporary Uses
LocationFirst row of parking stalls in Helm Building parking lot.
From left to right: Food carts in Portland, OR; Mobile Food 2010 in Los Angeles, CA; Book Market in Paris; Temporary Book & Beer Fair, Dublin. Source: Flickr 2010.
Building StandardsA-3.3
Alexander Street“Moving People, Making Places”20
Ale
xand
er
Front Setback 30'Side Setback 0'Side Street Setback 5'Rear Setback 5'
Ground Floor Uses <3,000 sf Uses >3,000 sf 1 space/500 sfUpper Floors Residential uses 1 space/unit; .5 space/studio Other uses 1 space/1,000 sf
Parking Drive Width 15' max.
Front 12' max.Side Street 8' max.Rear 4' max.
Gallery Clearance HeightAwning Depth 10' max.Forecourt Depth Width
15' min., not to exceed width 20' min., 50% of lot width max.
EncroachmentsLocation
Allowed Frontage Types (see page ###)
1' min. back from curb line9' min. clear, 2 stories max.
Bicycle parking must be provided and in a secure environment.Parking drives are highly discouraged along Alexander Street and only permitted if there is no other option for access to parking areas.Utilize existing parking prior to building any new parking.
On corner lots, parking drive shall not be located on primary street.Parking may be provided off-site within 1,300' or as shared parking.
Notes
Parking Site RequirementsLocation (Distance from Property Line)
Required Spaces
No off-street parking required
4-7Downtown Mixed Use Master PlanOpticos Design, Inc.
Chapter 4: Form-Based Code
Property Line
Parking Area
Key
Sidewalk
Primary Street
Side
Stre
et
Sidewalk
Primary Street
Side
Stre
et
BTL,
Pro
pert
y Lin
e
P
S
T U
R
V
X
W
Parking
Location (Distance from Property Line)
Front Setback 30'
Side Setback 0'
Side Street Setback 5'
Rear Setback 5'
Required Spaces
Ground Floor
Uses <3,000 sf No off-street parking required
Uses >3,000 sf 1 space/500 sf
Upper Floors
Residential uses 1 space/unit; .5 space/studio
Other uses 1 space/1,000 sf
Notes
Parking Drive Width 15' max.
On corner lots, parking drive shall not be located on
primary street.
Parking may be provided off-site within 1,300' or as shared
parking.
Bicycle parking must be provided and in a secure environment.
Parking drives are highly discouraged along First Street and only
permitted if there is no other option for access to parking areas.
Q
Property Line
Build-to Line (BTL)
Setback Line
Encroachment Area
Key
BTL, Property Line
Q W
P
R
S
T
U
X
V
Town Core (TC) Standards
Encroachments
Location
Front 12' max.
Side Street 8' max.
Rear 4' max.
Notes
Canopies, Awnings, and Balconies may encroach over the BTL
on the street sides, as shown in the shaded areas. Balconies
may encroach into the setback on the rear, as shown in the
shaded areas.
Upper-story galleries facing the street must not be used to
meet primary circulation requirements.
Allowed Frontage Types (see page 4-26)
Gallery
Clearance 1' min. back from curb line
Height 9' min. clear, 2 stories max.
Awning
Depth 10' max.
Forecourt
Depth 15' min., not to exceed width
Width 20' min., 50% of lot width max.
4-7Downtown Mixed Use Master PlanOpticos Design, Inc.
Chapter 4: Form-Based Code
Property Line
Parking Area
Key
Sidewalk
Primary Street
Side
Stre
etSidewalk
Primary Street
Side
Stre
et
BTL,
Pro
pert
y Lin
e
P
S
T U
R
V
X
W
Parking
Location (Distance from Property Line)
Front Setback 30'
Side Setback 0'
Side Street Setback 5'
Rear Setback 5'
Required Spaces
Ground Floor
Uses <3,000 sf No off-street parking required
Uses >3,000 sf 1 space/500 sf
Upper Floors
Residential uses 1 space/unit; .5 space/studio
Other uses 1 space/1,000 sf
Notes
Parking Drive Width 15' max.
On corner lots, parking drive shall not be located on
primary street.
Parking may be provided off-site within 1,300' or as shared
parking.
Bicycle parking must be provided and in a secure environment.
Parking drives are highly discouraged along First Street and only
permitted if there is no other option for access to parking areas.
Q
Property Line
Build-to Line (BTL)
Setback Line
Encroachment Area
Key
BTL, Property Line
Q W
P
R
S
T
U
X
V
Town Core (TC) Standards
Encroachments
Location
Front 12' max.
Side Street 8' max.
Rear 4' max.
Notes
Canopies, Awnings, and Balconies may encroach over the BTL
on the street sides, as shown in the shaded areas. Balconies
may encroach into the setback on the rear, as shown in the
shaded areas.
Upper-story galleries facing the street must not be used to
meet primary circulation requirements.
Allowed Frontage Types (see page 4-26)
Gallery
Clearance 1' min. back from curb line
Height 9' min. clear, 2 stories max.
Awning
Depth 10' max.
Forecourt
Depth 15' min., not to exceed width
Width 20' min., 50% of lot width max.
Parking StandardsA-3.4
Alexander Street“Moving People, Making Places”
Princeton, NJMay 15, 2010 21
Ale
xand
er
Parking StandardsA-3.4
Type SizeOff-Street Space 9'x18' min.*Compact Space 8'x16' min.*
Notes
Parking Space Dimensions
Wider parking drives may be requiredto accomodoate emergency access.
* see Standard Vehicle Space Requirements below
Angle Space Width Space Depth* Space Length One-way Aisle Width Two-way Aisle WidthParallel 9' 9' 20' 12' 24'30° * 9' 18' 20' 12' N/A45° * 9' 20'6" 20' 14' N/A60° * 9' 22' 20' 18' N/APerpendicular 9' 18' 18' 24' 24'
Angle Space Width Space Depth* Space Length One-way Aisle Width Two-way Aisle WidthParallel 8' 8' 18' 12' 24'30˚ * 8' 15'6" 16' 12' N/A45˚ * 8' 17' 16' 14' N/A60˚ * 8' 18' 16' 18' N/APerpendicular 8' 16' 16' 24' 24'
Other Parking RequirementsMin. 15% of parking lot must be pervious or landscaped.
Shared drives are encouraged between adjacent lots to minimize curb cuts along thoroughfares.All Parking areas shall be screened by building or a 3'6" min. height hedge, wall, or fence.
Standard Vehicle Space Requirements
*Measured perpendicular to aisle
*Measured perpendicular to aisle
Compact Vehicle Space Requirements
For every two parking stalls there should be one bike parking space.
Notes
Wider parking drives may be requiredto accomodoate emergency access.
A max. of 60% compact parking spaces.
Alexander Street“Moving People, Making Places”22
Ale
xand
er
Balconies Openings Caps
� Balconies can encroach into public space � They must be at least 7’ deep
� Vertical orientation are preferred � Horizontal orientation should
have vertical breaks that make up 40% of building face � Ground floor openings should
be larger than upper floors openings
� Allowable cap types include a pitched roof, parapet, and tower. � The cap shall be high enough
to screen the roof and any roof appurtenances from view of any adjacent building of similar height.
Architectural StandardsA-3.5M
oder
n Ty
pes
Trad
ition
al T
ypes
Alexander Street“Moving People, Making Places”
Princeton, NJMay 15, 2010 23
Ale
xand
er
Bollards Ground Treatments Bike Facilities
Mod
ern
Type
sTr
aditi
onal
Typ
es
� Bollards should be used to de-fine the edges between pedestrian and shared space. � Bollards can be made of a
variety of materials including cast iron, steel, recycled plastic, concrete as well as planters. They can also be permanent or temporary.
� A variety of paving materials, textures and colors should be used to achieve a more attractive environment and to avoid large expanses of plain poured concrete. � Special paving in shared space
signals to drivers that they are entering a high pedestrian activity area.
� All developments shall be designed to accommodate bicycle travel, including the provision of bicycle parking. � Bicycle parking shall be located
in visible areas, with convenient pedestrian access to the sidewalk; and with shelter from inclement weather.
Material StandardsA-3.5
Alexander Street“Moving People, Making Places”24
Ale
xand
er
Circulation PlanA-4
Pedestrian Bicycle Transit � Continuous sidewalks with a 5’
landscaped buffer along each side of Alexander Street separate pedes-trians from traffic. � The addition of park space and
a walkway links the residents of Magie and Hibben Apartments to shopping, recreation and jobs.
� A separated bicycle path along the BRT right-of-way provides safe access to the Princeton Junction Train Station and downtown Princeton. � The addition of bicycle parking
throughout the site enhances the existing bicycle sharing program.
� A BRT station along lower Alexander Street extends the acces-sibility to the greater community, including the Princeton graduate student family housing. � Frequent service connects the
area to greater Princeton and the region.
A major goal of the Alexander Street Corridor is to provide a coordinated system of pedestrian, bicycle and transit facilities to connect schools, shopping, and residential and recreational areas throughout Princeton. One of the core objectives of the circulation plan is the creation of shared space. The intent of shared space is to improve the quality of public space by integrating pedestrians, bicyclists and vehicles. Another objective is the creation of a safer, more accessible route to the Delaware & Raritan Canal.
Alexander Street“Moving People, Making Places”
Princeton, NJMay 15, 2010 25
Ale
xand
er
Illustrative ConceptA-5
Bird’s eye view of Lower Alexander Street Concept Plan looking north. Magie and Hibben Apartments are in the background.
Existing Conditions
Today Alexander Street is an under utilized and out dated service corridor that lays at the door step of Princeton. With the implementation of the proposed form based code (FBC) the Alexander Street Corridor has the potential of being a fully interactive piece of the community and serve as a gateway to Princeton.
Alexander Street“Moving People, Making Places”26
Ale
xand
er
Exis
ting
Mod
ern
Trad
ition
alIllustrative ConceptA-5
Alexander Street“Moving People, Making Places”
Princeton, NJMay 15, 2010 27
Ale
xand
er
Illustrative ConceptA-5
Above: Businessmen grabbing lunch from the food kiosks along Alexander Street.
Left: Taking advantage of the change in elevation to create vistas.
Alexander Street“Moving People, Making Places”28
Ale
xand
er
ConclusionA-6The focus of this document has been lower Alexander however, the form based code is intended to be implemented for the entire corridor in hopes of creating harmony with the Arts and Transit development proposal and serve as a gateway for Princeton. The intent of the form based code is not to prescribe uses, but to create the form for future development that stimulates community and interaction while fostering a sense of place. The illustrative concepts given in this document supplement the form based code by envisioning what development could occur, either in a traditional or modern environment. Using the existing right of way as bike, pedestrian and BRT access to Princeton connects many to lower Alexander, extending the vitality of an under utilized stretch of land which reflects the ultimate goal of moving people, making places.
Alexander Street“Moving People, Making Places”
Princeton, NJMay 15, 2010 29
Ale
xand
er