HomeMy WebLinkAboutItem #06 Approval of Traffic Calming Speed Tables
AGENDA ITEM COVER SHEET
Meeting Date: November 6, 2007
Item # ( 0
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Contact Name:
Contact Number:
Stephen C. Krug
6002
Reviewed By:
Department Director:
City Manager:
Sybject: Traffic Calming Speed Tables, 2006-2007.
Background Summary:
The 2006-07 City budget allocated $40,000.00 for traffic calming projects. Public Works received
fourteen (14) traffic calming evaluation requests for the 2006-07 year. Based on the field data, the
Commission approved proceeding with the Petition Drive Procedures for Kimball Dr., Center St., Marlene
Dr. and Ridgefield Ave. The Commission also requested two speed tables be installed on Russell Dr. in
the vicinity of the Park. Following numerous extensions to the petitioning time frame to provide ample
opportunity for securing approvals from as many property owners as possible, only Kimball Dr. &
Marlene Dr. had the required majority approving the installation of traffic calming devices.
Public Works has researched the use of prefabricated traffic calming devices made from recycled
materials and proposes using two styles for the three areas listed above as produced by Traffic Logix.
. Two (2) 17.5' x 3" x 21' speed tables will be installed on Russell Dr., one (1) north of Sabrina Dr.
and one (1) between Jamela Dr. & Springs Dr.
· Kimball Dr. and Marlene Dr. will each use three (3) 14' x 3" x 21' speed tables spaced to provide
optimum calming effects.
The Cost of the tables is as follows:
. $10,528.00 for two (2) 17.5' x 3" x 21' speed tables @ $5,264.00 each.
. $26.064.00 for six (6) 14' x 3" x 21' speed tables @ $4,344.00 each.
. $36,592.00 Total
Issue:
Should the City Commission approve the proposed traffic calming installations?
Recommendations
Staff requests approval by the City Commission to forgo the normal bid process and proceed with the
proposed traffic calming installations for a not to exceed cost of $37,000.00.
Attachments:
Manufacturer's specification sheet.
Financial Impact:
$40,000.00 was funded in account line 001-541-10-6302 for traffic calming in the 2006-07 budget. The
proposed traffic calming recommendations will require up to $36,592.00 of this budget amount.
Type of Item: (please mark with an "x'J
Public Hearing
_ Ordinance First Reading
_ Ordinance Second Reading
Resolution
~ Commission Approval
Discussion & Direction
_ Original Document/Contract Attached for Execution by City Clerk
Original Document/Contract Held by Department for Execution
Reviewed by City Attorney
Reviewed by Finance Dept.
Reviewed by ( )
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For Clerk's Dept Use:
_ Consent Agenda
Public Hearing
_ Regular Agenda
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The Traffic Logix's Speed Hump and Speed Table Specifications
1. General description:
Speed Humps and Speed Tables of various dimensions are
constructed using interlocking modules (US patent pending
12633-23USPR). The standard foot print dimensions of each
module are 18" by 42". The weight of the various modules is
between 50 and 100 Ibs.
Each unit is bolted to a paved road surface using six lag bolts
3/8" dia. through a plastic shield installed in the road surface.
The Traffic Logix proprietary two directional tongue and grove
interlocking system provides additional connection between the
modules and increases stability of the speed hump or speed
table.
2. Dimensions of the modules:
width 18" (+/- 1/16")
length 42" (+/- 1/8")
thickness 3" (+/- 1/8")
3. Dimensions of the Speed Humps/Tables:
(width and length of speed hump are adjustable)
width from?' up, by 3.5' increments
length: according to a street width, from 6' by 1.5' increments
height: 3" or 4"
4. Standard dimensions of the Speed Humps/Tables:
width?', 14',21'
length: according to a street width
height: 3" or 4"
5. Entrance and exit gradient:
1 :15
6. Side gradient:
1:3
7. Material:
Compression molded 100% recycled synthetic and natural
rubber composite
8. Physical properties:
tensile strength: minimum 500 psi
shore hardness: minimum 70A
specific gravity 1.1
9. Marking:
rubber modules are available in black or
black with yellow reflective tape or
black with white reflective tape
10. Installation method:
each module is affixed to the pavement with six zinc plated
steel lag bolts 3/8" x 4", plastic polypropylene shields and
3/8" zinc plated steel washers supplied with the modules
9/16" diameter holes are drilled through the holes in the
modules into a paved road.
the plastic shields are installed in the mounting holes with
the provided installation tool
the lag bolts are inserted into mounting holes and tightened
(do not over tighten the bolts)
11. Installation tools:
chalk line, measuring tape, heavy duty hummer drill, 9/16"
dia. by 10" long carbide tip drill bits, installation tool for
plastic shields, 11/16" drive socket with a power tool,
portable blower, utility knife, crow bars
installation tool for the plastic shields is supplied for the initial
installation job only
additional bolts, shields, washers, and installation tools can
be purchased from Traffic Logix
12. Warranty:
A two (2) year warranty is provided on all Speed Hump/Table
components installed as per the manufacturer's installation
instructions.
14'
14' X 3" X 22.5' Speed Hump
Traffic Logix 2005
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