HomeMy WebLinkAboutC2011-223 - 7/19/2011 - ApprovedCHANGE ORDER
Department of Engineering Services
City of Corpus Christi, Texas
CHANGE ORDER NO:
FUNDING SOURCE Bond Issue 2008
CONTRACT TIME: 1,177 C.D.
Operating Department: Engineering Services DATE: 23- May -11
Name of Project: Kostoryz Road Improvements, Phase 1 from Horne to Sunnybrook Road with Brawner Off -Site Drainage�P
Contractor: Texas Sterling Construction Co.
CHANGE ADD DEDUCT
Add the following to the contract:
See Attached
Why was this change necessary? (If left off the plans and specifications, explain why ?)
See Attached
How can similar changes be avoided in the future?
See Attached
A. CONTRACT PRICE
B. TOTAL CHANGE ORDER (inc. current)
C. NEW CONTRACT PRICE
D. THIS CHANGE ORDER
E. PERCENT TOTAL CHANGE (BIA)
F. PREVIOUS TIME AUTHORIZED
G. ADDN'L CONTRACT TIME THIS CHANGE ORDER
H. TOTAL ADDITIONAL TIME
$10,244,299.50
$216,100.85 f
$10,460,400.35 ✓
$216,100.85 ✓ A roject Manager
Z, For p o P e e�le -?,
1,177 C.D.
0 C.D.
0 C.D.
CITY OF CORPUS CH STI, TEXAS
By:
Director of Engineering Services
APPROV ��� O / n y erating Department
` Dir. of Man A6Pm&nf A, ltnd Pt
CONTRACTOR
By:
Title:
l
Legal Dep, M
ar1ES'T: TX Sterling Construction I
ARMA.NL:O CPfA A
02 01 � � AUTWRIXE�D
2011 -223
2011 -158 CVUNV,1L.. 1q
07/19/11 C
F
Kostoryz Road
1
Cement Stabilize Exist 5 Caliche Subbase (3 %)
6,442 CY @ $24.00 per CY
($..54,608.00)
2
5" Crushed Limestone Base
39,825 SY @ $6.00 /SY
$238,950
3
Excavation and Removal of Exist 5 Subgrade
39,825 SY @ $2.70 per SY
$107,527.50
4
5' Diameter Sanitary Sewer Manhole
1 EA @ $8,500.00 /EA
$8,500.00
5
Sanitary Sewer Manhole Depth a 6'
24 VF @ $400.00IVF
$9,600.00
6
Pipe Bursting of WW Line (16" HDPE Pipe)
1,030 LF @ $80.00/LF
($82,400,00)
7
Remove and Replace (Open Cut)
Wastewater Line (15" PVC)
1,030 LF @ $75.00/LF
$77,250.00
8
Trench Safety (Wastewater Lines)
1,045 LF @ $1.00 /LF
$1,045.00
9
Trench Safety (Manholes)
1 EA @ $100.00/EA
$100.00
10
Remove & Replace (Open Cut) Wastewater
Line (10" PVC)
15 LF @ $80.00/LF
$1,200.00
11
Speed Bumps for Neighborhood Traffic Control
5 EA @ $1,787.27/LF
$8.936.35
TOTAL: $216,100.85 ✓
Why was this change necessary?
1) The pavement cores taken as part of the geotechnical investigation indicated a layer of
existing caliche base that could be salvaged and reused under the new pavement.
However, after excavation of the existing roadway began, it was discovered that there is
little to no caliche base under the inside lanes of the existing roadway.
2) The Plans call for rehabilitation by pipe bursting of an existing 15" gravity sanitary
sewer line between. Mahan Drive and Foley Drive as part of the roadway improvements.
However, after construction began, it was found that a short section of an existing 10"
sanitary sewer line that ties into this sanitary sewer line is in conflict with the new storm
drainage box being installed where it crosses the new box and thus must be lowered.
The lowering of this 10" line will also necessitate the lowering of the 15" line as well in
order for the line to drain properly.
3) City Traffic Engineering has requested speed bumps be installed on adjacent residential
neighborhood streets during construction to help slow down traffic that is cutting thru
these streets to avoid travel delays related to the construction along Kostoryz Road.
How can similar chap es be avoided in the future?
1) Unavoidable. The pavement cores were taken only along the existing outside
southbound lane in order to avoid the possibility of damaging utilities located nearer the
middle of the roadway as the exact location of these utilities was unknown at the time
the geotechnical investigation was done. The design of the new pavement was based on
geotechnical information that did not reflect actual conditions discovered during
construction.
2) Better quality control measures and more thorough review of the design during the final
design phase of the project.
3) Unavoidable. Issues related to traffic detouring outside of the project limits in order to
avoid the congestion and inconvenience related to the restriction in usable traffic lanes
cannot normally be ascertained until construction begins.
DEPARTMENT OF ENGINEERING SERVICES
CHANGE ORDER SUMMARY SHEET
July 19, 2011
PROJECT: Kostoryz Road (BOND ISSUE 2008)
Phase 1 from Horne to Sunnybrook (Project No. 6489)
Phase 2 from Sunnybrook to SPID (Project No. 6490)
APPROVED: City Council Motion No. 2011 -031 on January 25, 2011
CONTRACTOR: Texas Sterling Corporation
20810 Fernbush Lane
Houston, TX 77073
TOTAL CONTRACT AMOUNT
$10,244,299.50
Motion No. M2011 -031
25% Limit Amount
$2,561,074.88
Change Order No. 1 (April 14, 2011
$0.00
Administrative Approval
Change Order No. 2 (July 19, 2011
216,100.85
City Council Action
TOTAL All Change Orders
$216,100.85
2.11 % < 25%
H: IHOMEXVeImaMGEN1STREETrA89 KOSTORYZ PHASE 11CONSTRUCTIONICHANGE ORDER NO.2ICHANGE ORDER SUMMARY.doc