HomeMy WebLinkAboutTrans 2009-01-20 Item 3F - Purchase - Field Trailer for Tukwila International Boulevard Phases II and III
City of Tukwila
Jim Haggerton, Mayor
INFORMATIONAL MEMORANDUM
TO: Mayor Haggerton
Transportation Committee
FROM: Public Works Directo~
DATE: January 14, 2009
SUBJECT: Tukwila International Blvd Phase II & III (S 116th St to S 139th St)
Project Nos. 95-RW03 & 95-RW04
Purchase Field Trailer
ISSUE
Approve purchase of a field office trailer for construction management.
BACKGROUND
The City has typically provisioned a field office for the management of large construction
projects through the construction contract. The responsibility is placed on the contractor to lease
a field trailer and provide it for the City's use throughout the project. While the cost is charged to
the project and the majority of the set up is the responsibility of the contractor, in-house staff is
responsible for moving equipment into the space and configuring it to work with the specific
office layout. This uses valuable field time at the start of each large project and puts the field
teams in a reactive stance with the contractor at a time when they should be the most proactive.
ANAL YSIS
A review of the purchase vs. lease costs for typical office trailers of this type show a lease rate
which would pay for the capital expenditure in approximately 5 years. While some risk is
involved with the City owning a trailer, we have demonstrated a steady need for our own trailer.
We expect to be able to use this structure for our major projects in the foreseeable future.
In an attempt to reduce the majority of our risk, we customized the basic trailer specification
from a classroom portable design to provide improved durability and maximum flexibility for the
variety and size of the anticipated upcoming projects. The trailer is fully mobile and will be fitted
with a special hitch to allow it to be moved with standard City equipment. The size was chosen
to provide shared office space for up to five field personnel with a dual use conference space for
field meetings. At a nominal 10' x 32' dimension it is easily placed and stored with a compliment
of field equipment.
We chose to purchase the field trailer through the King County Director's Association (KCDA), a
purchasing cooperative. This service provides support with specification and bid administration
similar to the state purchasing system. The base trailer cost with modifications is $26,190 and
with tax and a small KCDA fee, the total purchase price is just under $30,000.
RECOMMENDATION
The Council is being asked to approve the purchase of a mobile field trailer for the TIB Phase II
& /If project and additional projects in the amount of $30,000.00 and consider this item at the
January 26, 2009 Committee of the Whole meeting and subsequent February 2, 2009 Regular
Meeting.
Attachment: General trailer specification with approximate picture
P:\PROJECTSIA- RIV & RS Projects\95RIV03 TIB2\/nfo Memo Trailer CM 01-14-09-MERdoc
Modern Building Systems 10 x 32 Office Windows Internet Explorer
y http:// modernbuildingsystems .comIfloorplans /10x32o,html
General Specifications:
10' x 22'
32'
All trailer dimensions are ADA compliant
Bow truss
Suspended T-grid ceiling with fluorescent lights
Exterior hollow core metal door with entrance lever
handle
T1 -11 siding
Heating and air conditioning
VC tile flooring
KCDA Field Spec Office
Close Print
10' x 10'
Internet
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