CF-Village-AG 890911 .Rev. · 4-2 4-8 9
· AGENDA REQUEST FORM --
ITBM CAPTION:
Discussion, consideration, and approval of Change Order No. 3 for the Village
Parkway Pump Station for $8,434.00 and authorizing the City Manager to sign
(Consent Agenda)
SUBMITTED BY __ .... R. Doyle, P. E.
~UATIO~F IT~: DATE: July 31, 1989
See attached Ginn Inc. recommendation letter dated 6-19-89
L Sufficient Funds are available in the project contigencies for this change order
CO # 1 & 2 was approved by the City Manager
CO #1 contained a number of items with no increase to the contract.
for a increased cost to the contract of $2300.00
Staff recommends approval ~ ~
COMMENTS: FINANCIAL REVIL~ BY:
The Parkway Pump Station project had ~154,361 budgeted f3r contingencies, therefore, funds are available.
LEGAL REVIEW BY: REVIEWED BY CM: ~[ ~,.
ACENDA REQ FORM
0588DS
Rev'.-. 4-24-89. ~UPPORT DOCU~ENTATION FOR AGE~TEH
~STAHP RECEIVED BY CITY NANAGERvS OFFICE:
SUPPORT DOC~IfTATIO~ SUBMITTED ~ITH AGENDA ITE~: / NO. OF ORI6I~S
~S/LETTE~/BPO~TS/BILLS ~IETES: '~ I each
CO--CT/ACCeNT ................. : 3 ort~i~ls for
C.I.P. CON.CT ..................... .- ~ 6 originals for si~ature
C~CE 0~ERS ....................... ~ ~_ 3 orig~nals for
OP. DINANCE ........................... ** 1 blueback for signature + 3 cop~e8
CAPTIOI~ · 1 blueback for 8i~n~t~re + 3 copies
RESOLUTION .......................... .. 2 bluebacks for signature + 1 copy
PROCLANATION ........................ : :2 bluebacks for 8isnature + 1 copy
BID ................................. : 1 each
LOCATION MAPS ....................... : 12
ZONING PLANS ........ ~ ................ ~ 12
PRELIMINARY/FINAL PLATS ............. : 12
SITE PLANS · 12
LANDSCAPE PLANS ..................... : 12
ARCttITECTUP~L RENDERINGS ............ : 12
DATE PUBLISHED IN THE CITIZENSJADVOCATE:
NOTIFICATION TO:
DATE/HETHOD OF CONTACT:
NOTES
GINN, INC. CONSULTING ENGINEERS
May 31, 1989
Mr. Karl D. Hirschey
Cajun Contractors, Inc.
P.O. Box 540487
Dallas, Texas 75354-0487
Re: Village Parkway Pump Station
City of Coppell, Texas
Dear Mr. Hirschey:
Per your April 12, 1989 letter and our May 9, 1989 meeting, we have re-
evaluated your request for additional compensation on the drilled foundation
piers. Based on our review of the Contract Documents, plans, and inspectors
log, we are able to substantiate a total of 296.5 VLF of 18" drilled piers
above plan quantities for the 32 foundation piers. Therefore, our
recommendation to the Owner is for a Change Order in the following amount:
296.5 VLF @ $24.25/VLF $7,190.13
Bonds & Insurance (+2%) 143.80
Subtotal $7,333.93
Cajun (i 5%) 1,100.07
Total Change Order $8,434.00
If you concur with the above, please sign all six (6) copies of the Change
Order and return them to our office. We will then forward them to the City of
Coppeli for their consideration.
Please note that the Contract Documents require that claims of this nature be
submitted in writing within thirty (30) days of the occurrence. Future claims
that fail to meet the required submittal deadline may be denied on this basis.
Sincerely,
.
Project Manager ....
attachments Iii '"
cc: Russell Doyle, P.E. Steve Goram
H. Wayne Ginn, P.E. Smoky Ginn
J.R. Richardson File 380
17103 Preston Road · Suite 100 · LB !18 · Dallas, Texas 75248 · Phone 214/248-4900
l",
"'l.,')' '"'"" i 5 1989 ' :""'"" '"1" "Il
April 12, 1989
Home Office: Dallas Office: Atlanta Office:
P.O. Box 104 · Balon Rouge, LA 708214)104 P.O. Box 540487 · Dallas, TX 75354-0487 4000 Cumberland Pkwy., Bldg. 800, Ste. A · Allanla, GA 30339
(504) 293-5857 · Fax Ho. (504) 291-9777 (214) 550-8611 · Fax No. (214) 550-1816 (404) 333.0195 · Fax No. (404) 333-O199
Ginn, Incorporated
17103 Preston Road
Suite 100
Dallas, Texas 75248
Attention: Hr. Sanford Case, P.E.
RE: Village Pkwy Pump Station
Coppell, Texas
Gentlemen:
In accordance with our previous discussion, Cajun Contractors,
Inc. has completed drilling and placing the 18" drilled piers
beneath the pump station base slab at the above referenced
project. To complete this activity, Cajun was required to drill
to an elevation deeper than that shown on the Contract Drawings
in order to encounter suitable material.
The Contract Specifications Section 2377, Article 2.2, states
"the depths and elevations shown in the Drawings indicate the
expected location of satisfactory material and will be used as
the basis for the Contract". Drawing S1, Sheet 17 of 46,
illustrates a typical pier detail. This detail indicates
approximately 18 VLF must be drilled pri'or to encountering
unweathered shale (suitable material), into which a minimum
penetration of 8 VLF must be drilled. Consequently, the
approximate total drilling depth of 26 VLF was to be used as the
basis for the Contract.
The exact depths drilled at each pier are listed on the attached
sheet. The actual, average depth drilled prior to encountering
the unweathered shale was approximately 27.5 VLF. Therefore, an
additional 9.5 VLF per pier was drilled in order to encounter the
shale and initiate the 8 VLF penetration. Specification Section
2377, Article 2.2 states "the Contract price will be adjusted in
accordance with the Contract conditions relative to changes in
the work".
Given these above conditions, and in accordance with Section 6 of
!
Ginn, Incorporated
Page two
Work and Claims", Cajun Contractors, Inc. respectfully requests a
change order in the amount of $ 9,230.00 as compensation for the
above described additional work. Summary cost breakdown is
listed below.
Additional Drilled Pier Drillin~
MK Construction 324.5 VLF @ 24.25/VLF $7,869.00
Bonds and Insurance 157.00
Subtotal $8,026.00
Cajun Contractors, Inc. - 15% 1.204.00
Total Change Order Cost $9,230.00
Your review of and response to this request at your earliest
convenience shall be appreciated. Should you have any questions,
please do not hesitate to call.
Sincerely,
CAJUN CONTRACTORS~ INC.
Karl D. Hirschey
Project Manager
KDH/ksb
cc: Chron
File 1.11 (8821)
Ned Durbin
Baton Rouge
!
BECTION 02377 - DRILLED PIER8 02377-~
PART L ~ENERAL
1.1 GENERAL
A. Drill, install reinforcing, and place concrete for
drilled piers.
B. Related Work and Specifications:
1. Section 02100: Site Preparation.
2. Section 02220: Structural Excavation, Fill, and
Backfill.
3. Section 03200: Concrete Reinforcement.
4. Section 03251: Construction Joints and Waterstops.
5. Section 03300: Cast-In-Place Concrete.
1.2 QUALITY ASSURANCE
A. Placement:
1. The vertical alignment of the drilled pier shall be
plumb to a tolerance of 1-1/2 inches for depths up
to and including ten feet, plus an additional
tolerance of one percent of the depth in excess of
the first ten feet.
2. The location of the center at the top of the pier
may not deviate from the location shown on the
Drawings by more than ten percent of the pier
diameter.
PART 2 PRODUCTS
2.1 MATERIALS
A. Concrete:
1. Ail concrete shall be in compliance with the
requirements of Section 03300, notes shown on the
plans, and the additional requirements of this
section.
2. A water-reducing retarder, as provided in Section
03300, shall be required in all concrete when metal
casings are used.
B. Reinforcing steel shall comply with the requirements of
Section 03200.
GINN, INC. CONSULTING ENGINEERS VILLAGE P~%I~ITAY PUMP STATION
DALLAS, TEXAS PROJECT NO. 380 CIT~ OF COPPELL, TEXAS
DIVISION 2 8ITEWOI~(~
- PAGE
SECTION 02377 - DRILLED PIERS 02377-2
2.2 EXCAVATION OF DRILLED PIERS
A. General:
1. Perform the excavation required for the shafts
through whatever materials encountered, to the
dimensions and elevations shown on the Drawings or
required by the site conditions.
2. The depths and elevations shown on the Drawings
indicate the expected location of satisfactory
material and will be used as the basis for the
Contract.
3. If satisfactory materials are not encountered at
elevations shown on the Drawings, raise or lower the
bottom of the pier as determined by the Engineer.
4. The Contract price will be adjusted in accordance
with the Contract conditions relative to changes in
the work.
B. Casing:
1. Provide steel casings as necessary to prevent caving
of the material or to exclude seepage water.
2. Select casing with ample strength to withstand
handling stresses, the pressure of concrete and of
the surrounding earth or backfill materials, and be
watertight.
3. Conform the size of the casing to requirements for
shaft size.
4. The casing shall be smooth and well oiled.
5. Extend casing above the elevation of the top of the
shaft.
C. Inspection: Provide suitable access and lighting for
proper inspection of the completed excavation to check
the dimensions and alignment of shafts and underreamed
excavation.
GINN, INC. CONSULTING ENGINEERS VILLAGE P/%RI~TAY PUMP STATION
DALLAS, TEXAS PROJECT NO. 380 CITY OF COPPELL, TEXAS
!
DIVISION 2 - BITEWOI~ PAGE
SECTION 02377 - DRILLED PIERS 02377-3
P]~RT 3 - EXECUTION
3.1 CONSTRUCTION OF DRILLED PIERS
A. Steel Cage Fabrication:
1. Place the cage of reinforcing steel, consisting of
longitudinal bars and spiral reinforcement, as a
completely assembled unit immediately prior to
concrete placement.
2. If the shaft is lengthened, extend a minimum of one-
half of the spiral reinforcement to the bottom. Lap
splice (20 diameters) or provide continuous bars
without splices extending the full drilled shaft
depth. Ail splices required shall be in the lower
portion of the shaft.
3. Tie spiral reinforcement to the longitudinal bars at
a spacing not to exceed twelve inches.
4. Brace the cage to prevent racking and in such a
manner as to not interfere with the tremie.
B. Steel Cage Placement:
1. Support the cage from the top of the shaft to
prevent it from slumping downward during concrete
placement and extraction of the casing. The support
shall be concentric with the cage to prevent racking
and distortion of the steel.
2. Support a minimum of one-half of the vertical bars.
3. In uncased shafts, use concrete spacer blocks or
steel chairs at sufficient intervals to insure
concentric spacing for the entire length of the
cage.
4. In cased shafts:
a. Do not use concrete spacer blocks in cased
shafts.
b. Place metal "chair" type spacers or bent pieces
of steel bars at sufficient intervals around the
steel cage to insure concentric spacing inside
the casing.
GINN, INC. CONSULTING ENGINEERS VILLAGE P]~RKIFAY PUMP STATION
DALLAS, TEXAS PROJECT NO. 380 CITY OF COPPELL; TEXAS
· DXVIBIOM 2 - BXTEWOR[~' PAGE
BECTXON 02377 - DRXLLED PIEI~ 02377-4
C. Placing Concrete:
1. Place concrete as soon as possible after all
excavation is complete and reinforcing steel placed.
2. Remove loose material and accumulated seepage water
from the bottom of the excavation.
3. Place concrete continuously in the shaft to the
construction joint shown on the Drawings.
4. Place concrete through a suitable tube or tremie to
prevent segration of materials.
a. The tube or tremie shall be made in sections to
provide proper discharge and permit raising it
as the placement progresses.
b. Nonjointed pipe may be used if sufficient
openings of the proper size are provided to
allow for the flow of concrete into the shaft.
c. Do not use aluminum tubes or tremies.
D. Casing Removal:
1. The elapsed time from the beginning of concrete
placement in the cased portion of the shaft until
extraction of the casing is begun shall not exceed
one hour.
2. Do not start removal of casing until casing is
completely filled with concrete.
3. When unusual conditions warrant, the casing may be
pulled in partial stages.
4. Maintain a sufficient head of concrete above the
bottom of the casing to overcome hydrostatic
pressure.
5. Casing extraction shall be at a slow, uniform rate
with the pull in line with the center of the shaft.
E. Inspection of Steel Cage:
1. Check the elevation of the top of the steel cage
before and after casing extraction.
GINN, INC. CONSULTING ENGINEERS VILLAGE P~KNAY P~MP STATION
DALLAS, TEXAS PROJECT NO. 380 CITY OF COPPELL, TEX~
!
- DXVXSXON 2 - SXT~lffOk~ P~GE
BECTXON 02377 - DRXLLED PXERS 02377-5
2. Generally, any upward movement of the steel not
exceeding two inches or any downward movement
thereof not exceeding six inches per 20 feet of
shaft length will be acceptable. Any upward
movement of the concrete or dis91acement of the
steel beyond the above limits will be cause for
rejection.
3. Maintain the indicated length of steel required for
lap. Install dowel bars to compensate for reduction
of lap due to downward movement of pier steel.
F. Finishing: Where concrete is required to be placed
monolithically with the shaft, a time interval will be
allowed for placing the required form and reinforcing
after casing removal. Prepare the interface as required
in Section 03251 for construction joints.
END OF SECTION
GINN, INC. CONSULTING ENGINEERS VILLAGE P/~RI~TAY PUMP ST&TION
DALLAS, TEXAS PROJECT NO. 380 CITY OF COPPELL, TEXAS
CI IANG F, ¢)i{I)I,:R
· ~(Inslr~ctions on rcvcr,~e side) No.
I'I{OJi~CI': Village Par~y ~ Sta~i~ I)A'I'I~OI=ISSUANCE: 5/31/89
()wN~: City of Co~11
P.0. ~x 478
(Name. Co~ll, ~ 75019
Address)
CONTRACTOR: ~j~ Contractors ~ Inc. OWNER's P,'ojec~ No.
P.O. ~x 104
Baton ~uge, ~ 70821-0104 ENGINHER: G~, Inc. C~sult~g ~gineers
CQNTRACI' FOR: Village Par~ay ~ Station
ENGINEER's Projeci No. ~80
You arc directed lo make thc following clmngcs i. lite Contracl Docmncnts.
l)c.%cription: Znsta11 a.n acktitional 296. S VLI: o£ 18" diameter drilled p/ers.
Purl~,s¢ or Change Order: Extra depth required on the 32 piers to reach suitable
strattm~ for pier penetration.
^l,achme,,.~: (Li.~l d~,,,,te,,ts .~Ul,m,rti,g change) 1. Cajun Cont~ ~ctors letter dated 4/12/89
2. Contract Doc~nents Section 02577
CI IANGI;: IN CON'I'RACI' I'RICE: CI IAN(;E IN CONTRA(.'I' 'FIM F.:
Original COllll'aCl Price Original Contract Time
$ 2,356,772.00 300 calendar days
Previous Changc Orders No. 1 lo No. 2 Ncl change from prcvkms Change Orders
$ 2,.500.00 -0-
Contract Price prior to this Change Order Contract 'l'in~ Prior lo this Change Order
2,339,072.00 300 calen~r ~ys
Net Increase (~ of lids Change Ordcr Net Increase {dccrcasc) tff this Change Order
8,434.00
Conlracl Price with all approved Change Osdcrs Conlracl Time wilh all a~ovcd Chrome Orders
$ 2, ~47,506.00 300 calen~
GINN, INC. CONSULTING ENGINEERS
J~e 19, 1989
Mr. Russell Doyle, P.E., City Engineer
City of Coppe11
POSt Office Box 478 ~'e~ (_. o~
Coppell, Texas 75019
Re: Village Par~ay ~p Station ~_'~%~
Change Order %3
~ar ~. ~yle:
Attached please find six (6) copies of ~ange Order 93 for ~e
~ove referenced project. ~is change order c~ers ~e extra
dep~ necessa~ for e~ending ~e ~i11~ fo~dation piers to
rea~ a suit~le ~aring strata. As you are aware, s~-surface
conditions are e~r~ely difficult to anticipate and can va~
widely wi~in a s~ll area. As a result, Section 02377:2.2~A of
~e Contract ~ents re~ires ~at~ ~e piers be rais~ or
lowered as necessary ~o encounter suitable stratum for pier
penetration. ~e s~cifications f~er state ~at ~e Contract
~ice will ~ adjusted accordingly if variances are re~ired.
~e p~p station fo~dation is sup~~ by. a system of 32
drilled piers. The base bid for the project included an
esti~ted 860 lineal feet of 18" di~eter drilled piers. A total
of 1,156.5 lineal feet was necessary to reach a suitable
penetration on ~e 32 piers. This repres~ts 296.5 lineal feet
of additional piers above the base bid quantity (~9.3'/pier
avg.). ~e at~ached ~ange Order ~3 in ~e ~o~t of $8,434.00
reflects the e~ra ~ant~ty of ~11~ piers re~ired to achieve
~e necessa~ penetration. Sufficient f~ds are available
project contingencies for ~is ~ange Order.
We have reviewed ~is re,est and reco~end ~t it be approved.
If you concur, please fo~ard ~is ~ange Order to the City
Manager for his consideration and sch~uling for the ~rliest
possible City Council approval. If you have any ~estions or
need additional info~tion, please contact us.
Sincerely, ~
Sa~ord W. Case, P.E. j ..
attac~ents
cc: Steve ~r~
H. Wa~e G~, P.E.
F~le 380
,-,,n-~ ~.,~,~,. Onnd · ,~uite 100 · LB 118 · Ds_I~% Texas 75248 · Phone 214/248-4900
CilAN(;E ()igl)El(
thmtrv:lio,t~ Oil iCVCl'~,e side) No.
~'RO~EC"r: Village Park~vay ~ Station ~'~'~ ()1: ISSIJANCE: 5/3J./89
OWN~R: City of Coppe~l
P.0. Box 478
~Namr. Coppell, TX 75019
Address)
U()NTRAUT()I~: Caj~ Contrac~or~, Inc. OWNER's I'rt~jccl Fit, ......
P.O. Box ~04
~a~on Rou~e, L.~ 7082~-0~04 I~NGINI~ILR: Ginn, Thc.
C()NI'IgACT I:()R: VJ ] ] a~e Park~vav ~ 5~at~on
ILN(;INI~i~R's Project No.
..................... ~ ...... . ............
You arc directed Io make Iht I~fllowing chlmgcs in thc Contract l)ocumcnls.
i)c~c.ption: Instal] an additiona] 296.5 VLF of 18" diameter drilled p~ers.
I'u,poscofUhangcOsdcr: Extra depth required on the 32 piers to reach suitab]e
stratt~n For pier penetration.
Allachmenls: il.isl doc.mcnls S.lq~Orling cha.gel l. Caj~ Contractors letter dated 4/12/89
2. Contract ~c~ents Section 02377
C[IAN(;E IN U()NTRA('T I'RIUI~: ('IIAN(iE IN C()NI'RA~'T TIMId:
(higinal (.kmt,act I'ricc ()tiginal ('OlllrilCl 'l'imc
-,~6,~.00 500 calendar days
I'rcvmus Change O.Ic;-s No .... 1- Io No. 2 Ncl change I'l't~nl prcvimm ('ha.ge (),dcrs
........................................................................
('o1111 iici I'l icc pi iof Io th;s ('hilllgC (}ltlCl' ('ollll'aCl Timc I'rior Io Ihis ('hlmgc ()l der
~ 359 n~ r)o xnn calendar days
Increase ~~ of lifts Uha.gc lhtlcr Ncl increase (dccl'ca~c) of lifts Uhangc Ostler
8,434.00 -0-
('onlracl I~s ice wilh ail alqWOvcd Change ()rdm ~ ('tml~acl Time wilh all approved ('ha.ge (h'dcrs
2,347,506.00 ............................ _~.~9 caleB~aK_4av2 ............................
............................................