1e. High Zone Water Tower Project: Approve Change Order #10
CITY OF
CHANHASSEN
7700 Market Boulevard
PO Box 147
Chanhassen, MN 55317
Administration
Phone: 952.227.1100
Fax: 952.227.1110
Building Inspections
Phone: 952.227.1180
Fax: 952.227.1190
Engineering
Phone: 952.227.1160
Fax: 952.227.1170
Finance
Phone: 952.227.1140
Fax: 952.227.1110
Park & Recreation
Phone: 952.227.1120
Fax: 952.227.1110
Recreation Center
2310 Coulter Boulevard
Phone: 952.227.1400
Fax: 952.227.1404
Planning &
Natural Resources
Phone: 952.227.1130
Fax: 952.227.1110
Public Works
7901 Park Place
Phone: 952.227.1300
Fax: 952.227.1310
Senior Center
Phone: 952.227.1125
Fax: 952.227.1110
Web Site
www.ci.chanhassen.mn.us
MEMORANDUM
TO: Todd Gerhardt, City Manager
FROM: Paul Oehme, Director of Public Works /City Engineer
DATE: October 10, 2011 P
M,
SUBJ: High Zone Water Tower Construction Project No. 08 -03: Approve
Change Order #1
PROPOSED MOTION
"Approve Change Order #1 for the High Zone Water Tower Construction
Project No. 08 -03 in a deduct amount of $37,707.00."
City Council approval requires a simple majority vote of the City Council
present.
BACKGROUND
On July 11, 2011, Council approved the plans and specifications and authorized
advertising for bids. Council also approved an agreement for purchase of easements
with School District 276 for permanent utility, temporary construction and future
access needs for the new water tower.
On August 4, 2011, the Minnetonka School Board approved an easement agreement
for constructing the water tower on the southwest corner of the Minnetonka Middle
School West campus.
On August 22, 2011, Council accepted the bids and awarded the construction contract
to CB &I, Inc.
DISCUSSION
Staff has reviewed ways to reduce the total cost of this construction project. The
proposed change order would switch pipe materials on the project to more cost
competitive materials. The products specified were very high quality materials
however staff feels the proposed material replacements will have acceptable perform
and have an acceptable life expectancy. Also, to access the cellular provider
mezzanine staff is proposing to switch out the stairs to a ladder access. The cost
breakdown of the proposed change order is as follows:
Replace 205 LF of 18 -inch HDPE watermain with 18 -inch PVC C900 DR18.
Chanhassen is a Community for Life - Providing for Today and Planning for Tomorrow
Todd Gerhardt
High Zone Water Tower Project — Approve Change Order #i
October 10, 2011
Page 2
Replace 204 LF of 14 -inch HDPE storm sewer pipe with 15 -inch RCP CL 5 Gasketed joint pipe.
Replace 55 LF of 24 -inch HDPE storm sewer pipe with 24 -inch RCP CL 5 Gasketed joint pipe.
Replace stairs for mezzanine access with ladder and safety climb system per spec.
Reduce the size of the mezzanine access enclosure to two sides 10'x10'.
Other deduct changes have been identified during the priming and painting operation however these
changes are dependent on weather conditions and other factors during construction. Staff will be
reviewing these potential deducts during the construction process.
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