HomeMy WebLinkAbout5. Discussion of Street Lighting StandardsCITY OF SHAKOPEE
Memorandum
TO: Mayor & City Council
Mark McNeill, City Administrator
FROM: Bruce Loney, Public Works Director
SUBJECT: Discussion on Street Lighting Standards
DATE: March 22, 2011
INTRODUCTION:
Staff has been reviewing street light standards for residential areas and would update the
council. Also staff can review the street lighting system on CR 101 on possible changes
for improving the system.
BACKGROUND:
The city and Shakopee Public Utilities Commission approved a street lighting policy in
June of 1998. This policy described the street standards such as spacing and light
standards for different districts such as residential or commercial or industrial.
One issue staff has seen the last few years is with the fiberglass residential street light
poles. These poles have not lasted as long due to weathering of the fiberglass and have
had to be replaced prematurely. Staff has research other poles and reviewed these poles
with SPU staff to see if a suitable replacement can be found.
Staff has done a cost analysis on various poles and based on life cycle costs, an anodized
aluminum street pole would be a good substitute. An aluminum pole has a longer life
and an anodized pole would need very little maintenance, thus a very effective life cycle
cost. Staff would like to discuss the results of our research with council to see if this
change would be acceptable. Staff would like to revise the street lighting policy this year
and would need to work with SPU staff to accomplish this. Attached is the street lighting
policy for council review.
Also staff has done more investigation on LED street lighting for CR 101 project working
with Ken Tallion of S.E.H., Inc. and would like to update city council on possible
changes to make the system more efficient and possibly lower cost. Staff is working on
those changes and will update city council at the meeting.
5.
ACTION REQUESTED:
1. Provide any direction on the proposed residential street light standard.
2. Provide any direction on the proposed changes to the CR 101 street lighting.
nice Lon , .E.
Public Works Director
H:\ENG\2011 ENGINEERING PROJECTS \2011 COUNCIL \CR 69 WORKSHOP.DOCX
WHEREAS, the City Council desires to establish a written policy on street lighting for the
City of Shakopee; and
WHEREAS, a Street Lighting Policy has been prepared and was reviewed by the City
Council at its June 2, 1998 Council meeting.
NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE
CITY OF SHAKOPEE, MINNESOTA:
City jC1 rk
RESOLUTION NO. 4923
A Resolution Adopting A Street Lighting Policy
For The City Of Shakopee
1. That the Street Lighting Policy, a copy of which is attached hereto is hereby
adopted.
2. This policy shall become effective June 2, 1998.
Adopted in
ATTEST:
session of the City Council of the City of Shakopee,
Minnesota, held this )pi a day of ,,�, _, 1998.
Mayor of the City of Shakopee
L OVERVIEW
The City intends that this street lighting policy promote the safe travel of City
streets in a manner both fair and affordable to the City and its residents. Street
lighting promotes pedestrian and traffic safety and to that extent the City shall
approve street lighting where warranted by such concerns. Lighting requests shall
come either by recommendation of the City Engineer or by property owners.
IL STREET LIGHTING STANDARDS
A. GENERAL STANDARDS
1. The developer shall pay the full capital costs of every light to be installed.
This includes poles, fixtures, underground wiring, and all appurtenant
work. The developer shall pay operation and maintenance for the light
system as per City Ordinances and Shakopee Public Utilities
Commission's Policy.
PLAN APPROVAL - All lighting plans are submitted to the City and SPUC for review
with the approval of street lighting plan determined by SPUC's Utility Manager.
B. NEW SUBDIVISIONS
CITY OF SHAKOPEE
STREET LIGHTING POLICY
1. Residential Streets (Average lot size of 2.5 acres or less)
Street lights shall be placed at intersections, no more than 300 feet
between lights where intersections are more than 450 feet apart, and at the
ends of cul -de -sacs where the distance from the end of the cul -de -sac to
the street intersection is greater than 250 feet. Developers shaII also install
lights to City Standards at the intersections of residential streets with
collector streets.
The lighting fixture standards shall be as per Shakopee Public Utilities
Commission's (SPUC) recommendations and generally as follows:
• Local Residential Streets - 24 foot fiberglass poles with 100 watt
high pressure sodium (H.P.S.) lamp and light, approximately 19.5
feet above the ground.
1
2. Residential Streets (Average lot size is greater than 2.5 acres)
Street lighting standards shall be the same as for residential streets where
average lot size is 2.5 acres or less. Street lights shall be placed at
intersections, no more than 600 feet between lights where intersections are
more than 900 feet apart, and at the ends of cul -de -sacs where the distance
from end of cul -de -sac to the street intersection is greater than 500 feet.
3. Arterial and Collector Streets in Residential Areas
Street lights shall be placed at intersections and spaced no more than 300
feet between lights -where intersections are more than 450 feet apart, with
lights usually alternating from one side to the other depending on the
width of the street.
The lighting fixture standards shall be per Shakopee Public Utilities
Commission's recommendations and generally as follows:
• Arterial and Collector Streets (north of Shakopee Bypass) 40 foot
wooden poles with 250 H.P.S. lamp in cobra head style luminaries
and light is approximately 32 feet above the ground.
• Arterial & Collector Streets (south of Shakopee Bypass) 34 foot
fiberglass pole with 250 watt H.P.S. lamp with shoebox style
luminous and light is approximately 28 feet above the ground.
4. Industrial Areas
Street lighting standards shall be the same as Collector Streets (south of
Shakopee Bypass). Street lights shall be placed at intersections and
spaced no more than 450 feet apart where intersections are more than 675
feet apart.
5. Commercial Areas
Street lighting standards shall be the same as Collector Streets. Streets in
Commercial District shall have street lights placed at intersections and
spaced no more than 300 feet between lights where intersections are more
than 450 feet apart, with lights alternating from one side to the other
depending on the width of the street.
2
6. Special Lighting Districts
Special lighting districts can be established only when approved by the
City Council and Utilities Commission (I.E. Downtown Central Business
District).
C. EXISTING SUBDIVISIONS
Where traffic safety clearly warrants, a street light may be placed upon the
recommendation of the City Engineer's office. The basis of such warrants shall
be a minimum Average Daily Traffic of 2000 vehicles or a layout such that, in the
City Engineer's estimation, significant improvement in safety might be obtained
by the placement of a street light. Since the benefit of such installations extends
to the City as a whole, these will be done at City expense.
When propel ty owners request additional lighting for their neighborhoods, they
must do so by petition - signed by 60% of the property owners affected by the
proposed light. The affected area shall be 150 linear feet on either side of the
proposed light, on both sides of the street. The placement of the proposed light
shall be specified in the petition. Petitioners shall approach the City, prior to
circulating their petition, to obtain direction as to where street lights are warranted
for their neighborhoods. Lights shall be approved if they meet the criteria for
street lighting standards.
If approved, each street light shall be paid for by the affected residents. Payment
shall be made prior to the installation of the light and shall include the cost of
poles, fixtures, underground wiring and all appurtenant work. The method of
payment shall be as directed by the City Finance Department. The City shall
assume operation and maintenance costs for a light from the time it is energized
by the utility and as per City /SPUC agreements by separate resolutions.
In existing developments new lights shall match in style and wattage those
already in place. If no lights are currently in place, then 100 or 250 watt high
pressure sodium (H.P.S.) lights in cobra -head or traditional style shall be the
standard.
D. COUNTY HIGHWAYS
1. Street lights shall be placed at intersections when the street light warrants,
as established by Scott County Highway Department have been met. If
warrants are met, per County policy, the County pays for the installation
of the light with the cost of maintenance and operation to be provided as
agreed upon in separate resolutions by the City and SPUC.
3
2. Street lights at intersections of City streets to County roads may be installed
by the City if traffic and pedestrian safety clearly warrants a light in the
estimation of the Public Works Director and as approved by City Council.
The basis of such warrants shall be a minimum average daily traffic volume
through the intersection of 2,500 vehicles per day or 250 vehicles per non-
daylight hour which is defined 6:00 PM to 6:00 AM or if there have been
three accidents per year that have occurred during conditions other than
daylight or a layout such that in the Public Works Director's estimation,
significant improvement in safety might be obtained by the placement of a
street light and if the County Road speed limit is posted at 40 m.p.h. or
more.
3. Street lights at intersections may be approved by City Council if
warrants are not met, per Scott County and the City Engineer; if property
owners petition the City and pay for the initial cost.
4. Installation of street lights, along a County road between intersections for
traffic and pedestrian safety, will be reviewed on a case by case basis by
City Council.
III. FUNDING OF COSTS
A. INITIAL INSTALLATION OF FIXTURES
I. New Subdivisions
Residential, commercial and industrial developers will pay for the street
lighting system and enter into an agreement with SPUC.
2.. Existing Subdivisions
New street lights would be paid for by benefiting properties through
upfront payments to the City. The City will reimburse SPUC for
installation of street lights.
3. Collector Streets
All street lights in developing areas will be paid by the benefitting
properties except the City will pay the additional costs, if any, from the
required street lighting system for the development.
4. County Roads
New street lights not meeting County warrants, but meeting City warrants
and if approved by City Council, would be considered a benefit to the
4
Community as a whole and paid by the City from the Capital
Improvement fund or other funds as designated by City Council.
B. REPLACEMENT OF FIXTURES
Z. The replacement of lighting fixtures is a maintenance cost to the City.
C. OPERATING COSTS
1. The cost of power for street lighting is provided by SPUC, as part of
contributions from SPUC to the City as agreed upon in separate
resolutions.
D. MAINTENANCE COSTS
I. SPUC donates the cost of relamping and routine maintenance services
for street lighting as provided by SPUC, as part of contributions from
SPUC to the City as agreed upon in separate resolutions.
REVISED: 5/28/98
5
Valmont 8' TO 30' ROUND TAPERED
STRUCTURES
A L U M I N U M
CONE TAPERED
ALUMINUM SHAFT
6063 —T6 ALLOY
Feet and Inches Top Diameter Base Diameter Wall Thickness Shape of Shaft
0708 - 8'
0908 - 10'
1108 - 12'
1308 - 14'
1508 - 16'
1708 - 18'
1908 - 20'
2408 - 25'
2908 - 30'
Customer Approval:
THICKNESS IN
32ND5 OF AN INCH
4 - 4/32 "or
0.125" Wall
5 - 5/32 "or
0.156" Wall
TOP DIAMETER
IN INCHES
30 - 3"
40 - 4"
45 - 4-1/2"
BASE DIAMETER* 6 - 6/32 "or
IN INCHES 0.188" Wall
40 - 4"
50- 5"
60 - 6"
70 - 7"
80 - 8"
• For available Bose D'ameter, Wall Thickness and Length Combinations, see Dimensional Load Data Table that follows.
T — Tapered Round
signature dote
EMBEDDED (DIRECT BURIAL) POLES
• 8' to 30' mounting heights.
• Tenons, brackets, and arms designed for single or multiple luminaire
mounting.
• Luminaires may be mounted on tenons, brackets or shaft may be drilled
to manufacturer's mounting specifications.
SPECIFICATIONS
All aluminum alloys shall comply with metallurgical and mechanical properties
set forth in the Aluminum Association Standards.
Shaft: The shaft shall be spun tapered from all new seamless 6063 alloy
aluminum tubing and shall be heat treated to produce a T6 temper. Each shaft
shall have a minimum of 6" straight length at the top. Top straight section serves
as a slipfitter for a luminaire or For the hub of the appropriate Valmont bracket
or tapered arm. Alternatively, the straight section may be drilled for mounting
luminaires. The shaft shall be cone tapered to the base diameter. All Valmont
shafts shall be polished with fine grain aluminum oxide cloths, resulting in a high
quality circumferential satin brushed finish. After finishing, each pole shall be
wrapped for protection in shipment.
Direct Embedment: Unless otherwise specified, the length of the embedded
section of a 4" diameter shaft shall be 3', 5" and 6" shall be 4', 7" and 8" shall
be 5'. A 1 - /2" diameter grommetted wire inlet hole located 1' 6" below grade
shall be included. The embedded section of the pole shall be coated inside and
outside with zinc rich paint.
Special Finishes: Natural anodize, duranodic, or painted finishes may be
specified as an addition to the satin brushed finish, if required. All aluminum
parts and accessories shall receive a finish similar to that specified.
Ground Lug: Each pole shall include a 5/1 " - 18 tapped provision for ground
connector.
Handhole: Available as an option.
Anti - Rotation Device: Available as an option.
T
E - Embedded
Base or
Mounting
E
Dl - 1@90
D2 - 2 @180
03 - 3 @120
D4 - 4@90'
D5 - 2 @90
D6 - 3 @90
P2 - 2 -3/8 "x 4
Tenon
P9 - Other Tenon
(Please Specify)
Fixture
Mounting
CATALOG LOGIC
Finishes
Options
Feet & Inches* Diameter' Wall Thickness` Shape of Shaft Base or Mounting Fixture Mounting Finishes
Options
POLYESTER POWDER
DBL - Black DBR - Bright Red
DCG - Charcoal Gray DDB - Dark Bronze
DMB - Med Bronze DNA - Natural Alum
DSB - Steel Blue DSS - Sandstone
DTG - Dark Green DWH- White
SC — Special Color Please Specify)
ANODIZED
204 - Clear Natural 311 - Light Bronze*
312 - Med Bronze* 313 - Dark Bronze*
335 - Black* * Duranodic Anodize
BRUSHED
SBF - Satin Brushed Finish
See Accessory
Section
(Please Specify
with Code t!)
Job Name: Quote:
Client Name.
Created By: Date.
Valmont Industries, Inc... 20$115.Eaton Avenue • Farmington, Minnesota 55024 -7932 (800)899-7577 • valmontstructures.com A2 -11
TYPICAL WEIGHT AND ALLOWABLE SIZE OF
LUMINAIRES*
DIMENSIONS OF POLES
NOMINAL
MOUNTING
HEIGHT
TYPICAL
LUMINAIRE
WEIGHT (LBS.)
EFFECTIVE PROJECTED AREA IN
SQUARE FEET AT:
EXPOSED
HEIGHT
OVERALL
SHAFT TOP BASE
LENGTH
WALL
MODEL
NUMBER **
70 80
MPH MPH
90
MPH
100 110
MPH MPH
8'
75
19.1
14.4
11.1
8.8
7.1
7'8"
10'8"
3"
4"
.125"
0708- 30404TE
10'
75
14.3
10.6
8.1
6.3
5.0
9'8"
12'8"
3"
4"
.125"
0908- 30404TE
12'
75
11.0
8.0
6.0
4.5
3.5
11'8"
14'8"
3"
4"
.125"
1108- 30404TE
12'
75
18.5
13.8
10.5
8.3
6.6
11'8"
15'8"
3"
5"
.125"
1108- 30504TE
14'
75
8.5
6.0
4.4
3.2
2.4
13'8"
16'8"
3"
4"
.125"
1308- 30404TE
14'
75
14.8
10.8
8.2
6.3
5.0
13'8"
17'8"
3"
5"
.125"
1308- 30504TE
16'
75
7.1
5.0
3.5
2.4
1.7
15'8"
18'8"
3"
4"
.125"
1508- 30404TE
16'
75
12.0
8.6
6.4
4.8
3.8
15'8"
19'8"
3"
5"
.125"
1508- 30504TE
16'
75
15.3
11.1
8.4
6.5
5.1
15'8"
19'8"
3"
5"
.156"
1508- 30505TE
18'
75
9.7
6.7
4.9
3.6
2.7
17'8"
21'8"
3"
5"
.125"
1708- 30504TE
18'
150
12.2
8.7
6.4
4.9
3.8
17'8"
21'8"
3"
5"
.156"
1708- 30505TE
18'
150
19.1
14.1
10.8
8.5
6.9
17'8"
21'8"
4"
6"
.156"
1708- 40605TE
20'
75
8.2
5.5
3.8
2.6
1.9
19'8"
23'8"
3"
5"
.125"
1908- 30504TE
20'
75
10.4
7.2
5.1
3.7
2.8
19'8"
23'8"
3"
5"
.156"
1908- 30505TE
25'
150
10.5
7.1
5.1
3.8
2.9
24'8"
28'8"
4"
6"
.156"
2408- 40605TE
25'
150
13.5
9.4
6.9
5.3
4.2
24'8"
28'8"
4"
6"
.188"
2408- 40606TE
30'
150
11.1
7.5
5.3
4.0
3.0
29'8"
34'8"
4"
7"
.156"
2908- 40705TE
30'
150
16.7
12.0
9.1
7.0
5.5
29'8"
34'8"
4.5"
8"
.156"
2908- 45805TE
8' TO 30' ROUND TAPERED
EMBEDDED (DIRECT BURIAL) POLES
ANCHOR BASE AND BOLT DETAIL
"A" BOTTOM
DIAMETER
1 -1/2" DIA.
GROMMETTED
WIRE INLET
HOLE
ROUND
EMBEDDED
(DIRECT BURIAL)
STANDARD
WIRE INLET
HOLE 1' 6"
FROM GRADE
"
EMBEDDED
LENGTH
DIMENSIONAL AND LOAD DATA
A
BOTTOM DIAMETER
4"
5"
6"
7 "
8 "
valmont
STRUCTURES
A L U M I N U M
B"
EMBEDDED LENGTH
3'
4'
4'
5'
5'
• 5' minimum embedded length for
Canadian market.
• EPA calculations are based on a 1.3 Gust Factor. Variations from sizes listed above, available upon inquiry at the factory. Satisfactory performance o lighting poles is dependent upon the pole
being properly attached to a supporting foundation of adequate design. Valmont does not design or offer recommendations for foundations.
•• Model number does not include mounting options or finish designation.
A2-12, Valmont Industries, Inc... 20805 Eaton Avenue » Farmington, Minnesota 55024-7932 (800)899 -7577 - valmontstructures.com