1989-094-RES WHEREAS, LAKE CROOK DAM HAS BEEN NOTED AS DEFICIENT IN INSPECTION BY TEXAS WATER
RESOLUTION NO.
89-094
WHEREAS, the Lake Crook Dam has been noted as deficient in
inspection made by the Texas Water Commission; and
WHEREAS, the City of Paris wishes to address said
defic ienc ies in an eng ineer ing study wi th des ign and furnish ing
of contract documents suitable for bidding purposes, and
RSA Consulting Engineers, has made a proposal for such
engineering services, in the form of Exhibit A attached hereto;
and,
WHEREAS, it is deemed to be in the best interest of the City
of Paris that such proposal be accepted and that such project be
designated Lake Crook Dam Rehabilitation Project No. 82.17A, be
approved; NOW, THEREFORE,
.
BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF PARIS,
That the proposal of RSA Consulting Engineers for professional
engineering design services for the Lake Crook Dam Rehabilitation
Project No. 82.17A, described in Exhibit A attached hereto, be,
and the same is hereby accepted.
Passed and adopted this 10th day of August, 1989.
~/ ..
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ATTEST:
~~'-'~~~'-""'C'-~~)
Mattie Cunning am, ity er
APPROVED AS FORM:
i ty Attorney
iilRSAiIiii
CONSULTING ENGINEERS
4415 Jefferson Avenue .
T exorkono. Arkonsas 75502
501 773.9967
~-'2-. \1 It
May 9, 1989
Mr. Earl Smith, P.E.
city of Paris
P.O. Box 1037
Paris, Texas 75460
RE: Lake Crook Dam Rehab
Dear Mr. smith:
Please find attached an Engineering Services Proposal for
the referenced project. We certainly appreciate this
opportunity to submit a proposal to the city. Due to the
nature of the project, the proposed services will be
provided out of our project office in Paris which is managed
. by Mr. David Falls.
If you .have any questions regarding the proposal, please
contact either David or myself.
Very truly yours,
RSA, Inc.
ff~~~aw[@
~~ l0
MAY 11 1989
IJSjskj
CITY OF PARIS
l'.'<l Air'.l rr. nq,i lin
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Attachment
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~~_l!~_!..I.~" ENG1N{US
TEXARKANA-
DALLAS-
H A R L
N G E N
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ENGINEERING SERVICES PROPOSAL
FOR
REHABILITATION OF RIP-RAP
AND SPILLWAY
LAKE CROOK DAM
CITY OF PARIS, TEXAS
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MAY 1989
RSA, Inc.
Engineers - Planners
4415 Jefferson Avenue
Texarkana, Arkansas 75502
(501) 773-9967
This proposal has been prepared in response to a
Request for proposal by Mr. Earl Smith, city Engineer,
for engineering services required for the development
of construction plans and specifications to
rehabilitate certain defects presently existing on the
Lake Crook Embankment.
An on-site inspection was conducted may 1, 1989,
by representatives of RSA, Inc, Consulting Engineers,
during which various deficiencies and structural
defects were noted and photographed. The following
descriptions of the various defects, and the
recommended improvements to same, are separated into
three maj or categories; 1) vegetation removal and
sealing of existing rip-rap panel joints, 2) removal
and replacement of rip-rap panels, 3) resurfacing and
grouting of defective spillway area.
VEGETATION REMOVAL AND JOINT SEALING
During the inspection of the embankment it was
noted that virtually every joint in the existing
concrete rip-rap was overgrown with heavy grass and
small timber growth which has taken root in the
embankment soils beneath the rip-rap panels. In
numerous instances the root system of the plants have
developed to the point that expansion of the roots have
dislodged the panels from adjacent panels and/or caused
GENERAL
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horizontal cracking across the panels. Refer to the
photographs included herein as Exhibit "A".
Additionally, it was noted that the entire
downstream face of the embankment has been overgrown
with small timber and heavy underbrush which is
preventing the proper maintenance and mowing of the
embankment slope. Should this condition be allowed to
continue to exist, further damage to the embankment
will result.
It is recommended that the entire downstream slope
of the embankment be cleared of all timber and
underbrush to facilitate the proper maintenance and
mowing of this surface. Upon clearing the embankment
slope, a thorough inspection should be conducted to
identify and repair any possible eroded areas and/or
seepage.
To alleviate further structural damage to the
concrete rip-rap on the upstream face of the
embankment, it is recommended that all plants, grass
and timber be removed from the joints of the rip-rap
panels and the joints thoroughly cleaned and sealed
with a flexible sealant. Removal methods utilizing
sand blasting or water pressure jetting may be used. A
root growth retardant should be applied.
The City has expressed its' desire to perform this
particular work item "in-house", with city forces and
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VEGETATION CURRENTLY ROOTED IN CONCRETE RIP-RAP PANEL JOINTS
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EXHIBIT "A"
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equipment.
Therefore, this item of work is not
included in this' proposal as a portion of the
engineering services to be rendered.
However, should
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the City so desire, RSA, Inc. would be privileged to
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assist the City's Engineering staff in developing and
investigating various cleaning and sealing techniques
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which may be utilized.
REMOVAL AND REPLACEMENT OF RIP-RAP PANELS
The entire upstream face of the embankment is
protected with a concrete rip-rap consisting of 12' x
14' x 5" thick concrete panels, please refer to the
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photographs and sketch, Exhibits "B" and "C" herein.
The on-site inspection indicates that the original
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joint sealant has deteriorated and become dislodged
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from the joint, in turn, exposing the underlying
embankment soil structure and concrete panel joints to
weather related moisture and reservoir wave action.
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The subsequent erosion combined with the upheaval
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forces from freeze-thaw action and expanding root
systems of small timber has caused misalignment of the
panels as well as complete structural failure in some
locations.
To repair this type of defect, the affected panels
(, must be removed and replaced with new panels. The
! supporting soil which exists I
voids in the structure
will need to be filled prior to placement of the new
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SHIFTED AND COLLAPSED CONCRETE RIP-RAP PANELS
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EXHIBIT "B"
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RSA, Inc.
Rlc.. Stone & Anoeletes
(MOINlI" . PLAHHIfU
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PARTIAL EMBANKMENT SECTION
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lYPICAL DEFEC11VE pANEL--
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PARllAL ~CAL REPU\CElVENT PANEL
FXHIBIT "C"
panels. This will be accomplished by removing all
loose, unstable material and installing a soil-cement
mixture in the void. This material will develop a
strength adequate for supporting the new panel and will
offer a resistance to erosion not found in the existing
soils. the new concrete panels would be constructed of
5" thick cast-in-place concrete having a compressive
strength of 3500 psi. The concrete panels would be
reinforced with 6" x 6" X 6" ga. wire mesh, see Exhibit
lie".
As a result of our inspection, we recommend the
replacement of a minimum 22 panels, each with an
approximate area of 168 square feet, 3696 sq. ft.
total.
RESURFACING AND REGROUTING OF DEFECTIVE SPILLWAY SURFACES
The existing reservoir spillway consists of a
concrete "ogee" type crest with concrete abutment
wingwalls located at the approximate middle of the dam.
The inspection revealed numerous locations on the
downstream face of the spillway where significant
spalling and erosion has occurred exposing the
reinforcing steel in the structure. Additionally, in
various locations on the spillway and abutment
structures there are large cavities exposing the
reinforcement steel and underlying portions of the
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SPALLING AND DETERIORATING SPILLWAY STRUCTURE
EXHIBIT "D"
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structure, please refer to the photographs, Exhibit "0"
herein.
It is respectfully recommended that immediate
improvements be initiated to correct the defects and
alleviate further deterioration of the structure
surfaces and reinforcing elements. These repairs would
include the thorough sand-blasting and cleaning of the
surfaces to be capped or grouted. Following
satisfactory preparation of the surfaces, an epoxy type
gout mixture would be applied.
It should be mentioned here that the above
corrections require the lowering of the normal pool
elevation the reservoir approximately 3 feet, to
elevation 473.00, to facilitate dry conditions on the
spillway surfaces as well as lower surfaces of the
embankment slope protection. The construction cost
estimate herein is based on the city personnel lowering
the reservoir level by utilizing temporary siphons or
the existing raw water pumps. Close coordination
between the city and construction contractor will be
required. It is further recommended that the design,
bidding and construction phases be scheduled around the
yearly dry season (summer months) to allow expedient
construction during dry conditions and to assure as
little fluctuation of reservoir water levels as
possible.
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1. ) Prepare Plans
construction
and
Specifications
for
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PROPOSAL OP SERVICES
It is understood that the city of Paris desires to
obtain the services of a consulting engineering firm
for the purpose of developing standard Bidding and
contract Documents,
technical specifications,
and
construction
drawings
and
details
for
the
rehabilitative work outlined herein.
In that regard, Rice, Stone & Associates, Inc.
proposes to provide the following engineering services:
This phase of the project would be
initiated immediately upon approval by
the city and the execution of an
Engineering services Agreement between
the city of paris and RSA, Inc., and
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will include the following work:
a) Pre-design conference with the
city Engineer to establish
project scope and Owner's
expectations.
b) Prepare construction plans,
specifications and contract
documents based on the pre-
design conference.
c)
Submit plans
specifications to the
Engineer for review
concurrence.
and
city
and
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2. )
Biddina Phase
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This phase of the project will be
initiated upon instructions by the Owner.
This proposal
is based upon the city
providing necessary copying and distribution
of bidding documents. RSA, Inc. will provide
assistance to the owner as follows:
a) Assist the Owner in advertising the
project for competitive bidding.
b)
Assist the
tabulation,
bids.
Owner in the
and analyses
opening,
of the
c) Review the capabilities of the low
bidder.
d)
Recommend
contract
contractor.
award
to
of
a
the project
construction
e) Assist in preparation of formal
contract documents.
3.) Construction Phase
This phase of the project will be
initiated upon issuance of the Notice to
Proceed to the Contractor by the city. Daily
construction inspection/observation is not a
portion of the engineering services to be
provided under this proposal. RSA, Inc. will
be available to provide periodic visits to
the job site for the purpose of reviewing
progress
and
construction
quality
and
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workmanship. Additionally, RSA, Inc. will
provide consul tation services as needed
during the Construction Phase on an hourly
rate basis. Costs associated with the
Construction Phase are not included in the
engineering cost estimate.
RSA, Inc proposes to furnish the above described
engineering services for a total engineering fee of
$4.800.00.
The estimated construction cost for the project is
$45.300.00, as shown on Table 1, and the total project
cost is $50.100.00.
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TABLE 1
CONSTRUCTION COST ESTIMATE
CONCRETE RIP-RAP AND SPILLWAY REHABILITATION
LAKE CROOK DAM
CITY OF PARIS, TEXAS
MAY 1989
1. Existing concrete rip-rap
removal and disposal
22 panels @$2.59 cy 67 cy-L.S. = $ 7,000.00
2. Prepare embankment face
and install soil-cement
fill L.S. = $ 3,500.00
3. Install new concrete
rip-rap panels -
22 panels @$2.59 cy 67 cy @$400 = $26,800.00
4. Sand-blast and prepare
spillway surfaces for new
grout application L.S. = $ 4,000.00
5. Apply new grout;
surfacing and fill to
spillway structure L.S. = $ 4.000.00
Total Estimated Construction Cost $45,300.00
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i1IRSAaii
CONSULTING ENGINEERS
SCHEDULE OF FEES
JULY 1988
Principal
Registered Engineer
Design Engineer
Planner
Registered surveyor
Senior Draftsman
Draftsman
Engineering Technician
Design Technician
Secretary
Administrative Assistant
Field Party (2-man)
Field Party (3-man)
Field Party (4-man)
Project Representative
project coordinator
Computer
Travel
Per Diem
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CONSULIIHCO INGINURS
TEXARKANA-
DALLAS-
4415 Jefferson Avenue
T exarkano. Arkansas 75502
501 773-9967
$90.00jhour
$55.00jhour
$40.00jhour
$55. o OJ hour
$35.00jhour
$22.00jhour
$17.00jhour
$36.00jhour
$27.00jhour
$l8.00jhour
$24.00jhour
$45.00jhour
$55.00jhour
$65.00jhour
$32.00jhour
$28.50jhour
$35.00jhour
$ .25jmile
$50.00jday
H A R L
N G E N