HomeMy WebLinkAboutResolution No. 07-065
CITY OF THE COLONY, TEXAS
RESOLUTION NO. 07- O(P~
A RESOLUTION OF THE CITY OF THE COLONY, TEXAS,
AUTHORIZING THE CITY MANAGER TO ENTER INTO A
SETTLEMENT AND INDEMNITY AGREEMENT WITH ADOLFSON
& PETERSON FOR IRRIGATION REPAIRS AT FIVE STAR
ATHLETIC COMPLEX; ATTACIllNG THE APPROVED FORM OF
CONTRACT AS EXlllBIT A; AND PROVIDING AN EFFECTIVE
DATE
NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE
CITY OF THE COLONY, TEXAS:
Section 1. That the City Council of the City of The Colony, Texas hereby
approves the SETTLEMENT AND INDEMNITY AGREEMENT WITH ADOLFSON &
PETERSON FOR IRRIGATION REPAIRS AT FIVE STAR ATHLETIC COMPLEX.
Section 2. That a true and correct copy of the Agreement is attached hereto
and incorporated herein, as exhibit A.
Section 3. That the city manager is authorized to execute the Agreement on
behalf of the city.
Section 4. That this resolution shall take effect immediately from and after its
passage.
PASSED AND APPROVED by the City Council of the City of The Colony,
Texas, this 2nd day of July, 2007.
'2J
J n Dillard, Mayor
ity of The Colony, Texas
ATTEST:
~~~~M
APPROVED AS TO FORM:
ST A TE OF TEXAS
~
~ SETTLEMENT AND INDEMNITY AGREEMENT
~
COUNTY OF DENTON
This Settlement and Indemnity Agreement ("Agreement") is made and entered into by
and among the City of The Colony (the "City"), Adolfson & Peterson, the General Contractor
(hereinafter, "GC"), and DSS, Inc., the Design Consultant (hereinafter, "Consultant"),
(collectively, "the Parties") to formalize the resolution in connection with the Work and Services
performed by the irrigation subcontractor for the City of The Colony on the project known as
Five Star Irrigation or "the Project."
RECITALS
WHEREAS, on or about ~...9/2002_ the Parties hereto entered into a contract for
work and services to be performed at the Five Star Complex ("Complex") located within the
City; and
WHEREAS, the Parties agree there was defective workmanship by the irrigation
subcontractor throughout the Complex, particularly in locations where "thrust blocks" were
specified to be installed in areas such as valve locations and other 45 or 90 degree connections
throughout the irrigation system; and
WHEREAS, the City has repaired approximately forty-four (44) defective thrust blocks
and has identified a minimum of seventy-five (75) additional locations where improperly
installed "thrust blocks" potentially exists as depicted on Exhibit "A," which is attached hereto
and incorporated herein; and
WHEREAS, the Parties agreed to resolve all issues related to the Project and have
reached a settlement as described herein; and
WHEREAS, the Parties intend this Agreement to represent the final and complete
resolution to the Project; and
WHEREAS, the Parties wish to resolve any and all issues related to the Project (whether
direct or indirect, incidental, consequential, ensuing, resultant or otherwise) arising out of the
services performed by the irrigation subcontractor under the terms of the contract for services
referenced above; and
WHEREAS, in order to avoid further time, expense and uncertainties the Parties desire
to enter into a final compromise and settlement of any and all issues described in this Agreement.
NOW, THEREFORE, in exchange for the mutual covenants set forth herein and other
valuable consideration, the sufficiency and receipt of which are hereby acknowledged, the parties
agree as follows:
Page 1
TM 16815.76.000
AGREEMENT
l.O 1 GC agrees to make the repairs, at its sole costs, on the remaining improperly
installed thrust blocks, consisting of the seventy-five (75) thrust blocks, depicted on the attached
Exhibit "A."
1.02 The Parties agree that the work shall be performed in accordance with the
specifications, which are attached hereto and incorporated herein as Exhibit "B," and the
materials and process specified therein shall be complied with fully to make each such repair.
1.03 The Parties agree that each individual repair must be inspected, tested, and
approved by the City prior to any backfilling. All turf areas disturbed, if any, shall be repaired
and re-established by the GC.
1.04 The repairs must be coordinated with the Parks and Recreation Department staff,
and shall be scheduled in a manner that does not allow any zone in the Complex to be without
irrigation (or another source of turf and landscape watering) for more than fifteen (15)
consecutive days at a time.
1.05 Prior to the commencement of any work to be performed, a pre-construction
meeting shall be held with authorized representative of all parties present.
1.06 All repairs must be completed within 180 calendar days of the date of execution
of all Parties to this Agreement.
MUTUAL RELEASE.
2.01 In consideration of the commitments made herein by the Parties, in the manner
provided herein, each of the Parties hereto, on behalf of itself and on behalf of its respective
heirs, executors, administrators, beneficiaries, predecessors, successors, assigns, members,
former shareholders, shareholders, former partners, partners, partnerships, subsidiary, affiliated
and related entities, officers, directors, principals, managers, agents, servants, employees, former
employees, representatives and all persons, firms, associations and/or corporations connected
with them, including without limitation their insurers, sureties, attorneys, managing agents,
consultants and experts, mutually release and forever discharge each other party to the
Agreement, and their respective heirs, executors, administrators, beneficiaries, predecessors,
successors, assigns, members, former shareholders, shareholders, former partner, partners,
partnerships, parent, subsidiary, affiliated and related entities, officers, directors, principals,
managers, agents, servants, employees, representatives, and all persons, firms, associations
and/or corporations connected with them, including without limitation, their insurers, sureties,
attorneys, managing agents, consultants and experts, who are or may ever become liable to them
(hereinafter collectively referred to as "related parties"), of and from any claims, demands,
causes of action, obligations, liens, taxes, damages, losses, costs, attorney's fees, and expenses of
every kind and nature whatsoever, known and unknown, fixed or contingent, latent or patent,
including any and all right to subrogation and/or indemnity therefore, which they may now have
or hereafter may have against any party to the Agreement by reason of any matter or cause
Page 2
TM 16815.76.000
arising out of the irrigations system failures at the repaired location only.
2.02 The City does not waive its right to future claims for other problems with the
irrigation system or any other system or structure that may be now exist or exist in the future at
the Complex.
2.03 Notwithstanding anything to the contrary appearing herein or hereafter, GC shall
not be liable to City, Consultant or any other party for any losses, damages, claims and/or the
like that in any way increase GC' s liability to anyone beyond that contained in its original
contract with City on the project known as Five Star Irrigation, nor shall GC be liable for any
costs, expenses or damages that extend beyond the repair or replacement of the defective work in
question.
INDEMNITY
3.01 EACH PARTY SHALL DEFEND, INDEMNIFY, AND HOLD THE OTHER HARMLESS
FROM ALL LIABILITIES, DAMAGES, LOSSES, AND EXPENSES (INCLUDING WITHOUT LIMITATION
ATTORNEY'S FEES AND COURT COSTS) OWED TO ANY THIRD PARTY ARISING FROM CLAIMS
RESULTING FROM SUCH PARTY'S FAILURE TO PERFORM OR COMPLY WITH ANY OF ITS
COVENANTS, OBLIGATIONS, REPRESENT A TIONS, OR WARRANTIES HEREUNDER THAT ARE
PERMITTED BY LAW. THE PREVAILING PARTY SHALL BE ENTITLED TO RECOVER ITS COSTS
AND EXPENSES IN CONNECTION WITH ANY ACTION AMONG THE PARTIES AND ALL APPEALS
THEREOF (INCLUDING WITHOUT LIMITATION REASONABLE ATTORNEY'S FEES AND COURT
COSTS). THIS INDEMNITY IS SUBJECT TO THE SAME QUALIFICATIONS AND RESTRICTIONS AS
CONTAINED IN ~2.03 ABOVE.
MISCELLANEOUS
4.01 This Agreement and the attachments and exhibits hereto represent the entire
Agreement between the Parties and supersede any prior understandings or Agreements whether
written or oral between the Parties respecting the subject matter herein. This Agreement may
only be amended in a writing specifically referencing this provision and executed by all the
Parties. This Agreement shall inure to the benefit of and shall be binding upon the Parties hereto
and their respective heirs, personal representatives, successors and assigns, subject to the
limitations contained herein. The unenforceability, invalidity or illegality of any provision of
this Agreement shall not render any other provision unenforceable, invalid or illegal and shall be
subject to reformation to the extent possible to best express the original intent of the parties.
4.02 This Agreement shall be governed by and construed under the substantive law of
the State of Texas.
4.03 This Agreement may be executed in counterparts and, when so executed by the
Parties, shall constitute an agreement which shall be binding upon the Parties hereto,
notwithstanding the fact that the signatures of all the Parties or designated representatives do not
appear on the same page.
Page 3
TM 16815.76.000
4.04 If any provision or any part of any provision of this Agreement is for any reason
held to be invalid, unenforceable or contrary to any public policy, law, statute and/or ordinance,
then the remainder of this Agreement shall not be affected thereby and shall remain valid and
fully enforceable.
4.05 Each person executing this Agreement represents and warrants that he or she is
fully authorized to enter into and execute this Agreement on behalf of the party on whose behalf
he or she executes the Agreement.
IN WITNESS WHEREOF, the undersigned have executed this Agreement as of the day and year
stated:
Adolphson-Peterson
The City of The Colony
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SIgnature
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Signature
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Title
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Date ' I
Citv Manaqer
Title
07/02/2007
Date
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Signature
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TM 16815.76.000
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EXHIBIT B
SECTION 02811 -- Landscape Irrigation System Repair
PART.1. GENERAL
1.01 SCOPE OF WORK: The furnishing and installing of replacement sprinkler components
delineated verbally or as shown on a sketch plan of the irrigation system, ready for
operation, shall include the following:
A. All piping; trenching; excavation of the existing components which have
malfunctioned or that were originally misinstalled; back-flow prevention devices;
remote electric valves; automatic sprinkler controllers, valve boxes etc.; installed as
located on the sketch plan and delineated within these specifications to provide a
properly performing non-leaking system for distribution of sprinkler water to all
heads indicated and/or installed.
B. All material and labor required to connect to the originally designed system.
1.02 DEFINITIONS:
A. "SPRINKLER MAINS" are that portion of piping from water source to operating
valves. This portion of the piping is subject to surges, being a closed portion of the
sprinkler systems and considered as pressure lines.
B. "LATERAL PIPING" is that portion of piping from operating valves to the sprinkler
heads. This portion of the piping is not subject to surges, being an "open end"
portion of the sprinkler system.
C. "QUICK COUPLING VALVE LINES" are considered a part of the sprinkler main,
1.03 SUBSTITUTIONS: Material shall be as specified or equal. Acceptance of
substitutions shall be allowed or disallowed at the sole discretion of the Owner's
Representative.
1.04 QUALIFICATIONS OF BIDDER: In order to qualify as a repair Contractor for any
portion of this work, the contractor shall be a registered Contractor and a licensed
irrigator in the State of Texas, regularly engaged in the business of installing turf
irrigation systems and shall have satisfactorily completed a minimum of three (3)
comparable turf projects of this size. List of references will be required.
1.05 RESPONSIBILITIES OF CONTRACTOR:
A. All materials and equipment shall be installed in a neat and workman-like manner
following the detailed recommendations contained within. The recommendations of
the manufacturer of the various equipment shall also be incorporated into the
system repair procedures.
B. The owner's authorized representative retains the right to order removal or
replacement of any items which, in his opinion, do not present a reasonably neat
and workman-like installation. Any removal and replacing of materials shall be
done when directed by the Owner's Representative at no additional expense to the
owner.
C. All plot dimensions on the irrigation design are approximate. Prior to proceeding
with the work, the contractor shall carefully check and verify all dimensions and
shall report all variations from those indicated in the irrigation plan to the owner in
writing. If changes are to be made, they will be made in accordance with previous
provisions.
D. If the contractor does not respond to the owner's request for repair work within a
period of seven (7) calendar days, the owner may proceed with such necessary
repairs and charge the contractor for all expenses incurred in the repair work.
02811 - 1
E. REPAIRS RECORD DRAWINGS: The contractor shall provide and keep up to date
a complete set of repair drawings which shall be drawn daily to show changes in
sprinkler locations, valve locations, piping locations, and other deviations from the
original irrigation installation. All relocated isolation valves, station valves, quick
coupler valves, sleeves, main line pipe, etc. locations shall be shown with actual
measurements to two reference points (existing site features) so they may be
located easily in the field. Upon completion of the work, the contractor shall furnish
the owner with a complete set of reproducible (mylar sepia or vellum) repair
drawings showing the sprinkler system as adjusted/repaired. This is the
responsibility of the contractor and shall not be construed to be the responsibility of
any other party.
F. Upon completion of the repair work and acceptance by the owner, the contractor
shall furnish copies of all available parts lists, trouble shooting lists, specification
sheets, and catalog sheets to the owner prior to final acceptance of the repaired
system.
1.06: SPRINKLER WARRANTY AND GUARANTEE:
A. Contractor will provide the owner with Repairs Record Drawings showing the
dimensional location of all electric valves, manual valves, master shut-off valves,
wire route, quick coupler valves, isolation valves, mainline route, sleeves, etc. Such
information will be provided with request for final acceptance.
B. Contractor will provide service and maintenance manuals on all major items in the
installation including servicing information.
C. The contractor shall provide operating instruction and maintenance information to
the maintenance personnel or owner's representatives at time of completion.
D. Testing System: Upon completion of the irrigation system and after sufficient time
as been allowed for solvent weld joints to cure, the entire system shall be tested for
proper operation. The testing procedures shall be determined by the Owner and
paid for by the Contractor. All air will be flushed from the system and all
components will be checked for proper operation by the contractor.
E. Notice of Completion: When the contractor is satisfied that the system is operating
properly, that all repair work and cleanup is completed, he shall issue the notice of
completion to the Owner's Authorized Representative. The notice of completion
shall include the request for final inspection with date and time given.
F. Final Inspection with Owner's Representative: The Owner's Representative will
respond to the notice of completion by the contractor and shall appear at the given
time for a tour of the project with the purpose of making it the final inspection. Any
inconsistencies to the specifications shall be noted by the owner's representative
and a written copy of corrections shall be given to the contractor.
PART 2: PRODUCTS:
2.01 POLYVINYL CHLORIDE PIPE: Polyvinyl chloride pipe (hereinafter referred to as PVC
pipe) shall have been manufactured in accordance with the Product Standards as
follows:
A. All mainline piping shall be Schedule 40 pipe ASTM, D1784, ASTM D1785 &
D2665.
B. All lateral piping shall be Schedule 40 pipe
C. Marking and Identification: All PVC pipe shall be continuously and permanently
marked with the following information: manufacturer's name, pipe size, type of pipe
and material, ASTM Designation, Commercial Standard Number and NSF (National
Sanitation Foundation) seal.
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02811 - 2
2.02 PVC PIPE FITTINGS:
A. All fittings shall conform to ASTM #D2464 for plastic pipe fittings. All threaded
adapter type fittings shall be SCH. 80 PVC.
2.03 SOLVENT:
Solvent for repairs shall be as follows:
Primer - Weld-on P-68
Glue - Weld-on PVC 711
2.04 COPPER TUBE:
A. All copper tube shall be type "M", hard, straight lengths, of domestic manufacture
only. Soft tube may be required for special applications, in which case these
special applications will be covered by the specifications elsewhere.
B. No copper tube of foreign extrusion or any so-called irrigation tubing (thin wall) shall
be used.
2.05 COPPER TUBE FITTINGS:
A. All copper tube fittings shall be cast brass or wrought copper, sweat-solder type.
B. Fittings shall be attached to the tubing in approved manner, using 50-50 soft solder,
except where special application may require another method of attachment, in
which case these special applications will be covered by the specifications
elsewhere.
2.06 SWING JOINT NIPPLES: All swing joint nipples shall be unplasticized polyvinyl
chloride, Schedule 80, threaded pipe. Fittings on swing joints shall be P.v.C.
Schedule 80 threaded elbows or street elbows.
2.07 ROTARY POP-UP GEAR-DRIVEN HEADS:
A. All rotary heads shall be gear-driven rotary pop-up units with a sealed power train.
Heads shall be of plastic construction with a positive gear drive for full and part-
circle heads. Part-circle heads shall be adjustable to provide the arc of coverage as
shown on the plan.
B. Rotary heads shall be so constructed as to allow removal of the drive train and
nozzle assemble from above ground without removal of the body from the riser.
Drive train shall be equipped with a strainer around the impeller and a wiper seal
between the cover and the nozzle assembly. The cover will be screwed to the body
of the head.
C. Nozzle shall pop-up a minimum of one and one half inches (12") during operation
and will be attached to the riser with Teflon tape on pipe threads.
D. All heads will have rubber cover.
E. Manufacturer and type shall be as indicated on the irrigation plan or an approved
equal.
2.08 ROTARY HEAD PERFORMANCE: Gear drive, ball drive, full circle and adjustable part
circle type.
2.09 QUICK COUPLER VALVES: Shall be installed as specified in plans. Quick coupler
valves shall be installed on swing-joints as specified in 2.05 "Swing Joint Nipples."
Quick couplers will be staked with one half inch (1/2") diameter rebar two (2) feet long
and clamped with stainless steel worm-gear type clamp.
2.10 BACKFLOW PREVENTION DEVICE: Reduced Pressure Zone Backflow Valve shall
be located and sized as shown on the plan. Construction shall be all brass. This
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02811-3
assembly shall be installed in a suitable box approved by the City and shall conform to
the City Plumbing Codes.
2.11 ELECTRIC VALVES: Remote control electric valves shall be located and sized as
shown on the plan. Valves shall be Rainbird P.E.B. - size equal to existing valve. The
solenoid handle shall be removed from the assembly. A stainless steel hose clamp
shall be placed on the valve's pipe body on the upstream end (In-flow) of the valve. All
valves shall have a 12" diameter ADS pipe stood vertically over them. The ADS pipe
shall be of sufficient length to extend three inches (3") above the final soil surface. The
bottom of the standing 12" ADS pipe shall be notched to accommodate the valves in-
flow and out-flow pipes. The area surrounding the vertical pipe shall be backfilled in-
place to achieve a stable installation; place a ~" piece of plywood as a lid onto the
vertical pipe during backfilling procedures to ensure no-soil enters the pipe. A Jumbo
Valve Box shall be placed over the top of the 12" vertical ADS pipe. The top of the
Jumbo Valve Box shall be 6" above finish grade.
2.12 AUTOMATIC SPRINKLER CONTROLLERS: Automatic sprinkler controllers shall be
of the quantity and type shown on the irrigation plan. Controller(s) shall be mounted
and located as indicated on the irrigation plan or as directed in the field by the Owner's
Representative.
2.13 WIRING (115 VOLT ELECTRIC WIRING): All 115 volt AC wiring shall be installed in
accordance with City electric codes. 115 volt service to controllers shall consist of one
black and one white wire. All wiring shall be buried to minimum depth of thirty inches
(30"). Wire shall be furnished in minimum two thousand, five hundred feet (2500') reels
and spliced only at connections or tee locations and will be placed in a valve box for
easy location and service.
All wiring shall be 14 gauge.
All splices in wiring shall be made watertight using approved methods as delineated
within these specifications.
2.14 CONTROL LINES:
A Twenty-four (24) Volt Electric: Electric control lines from controller to automatic
valves shall be direct burial UF wire of a different color than the 110 volt service to
controllers. The 24 volt common ground shall be of one continual color and a
different color than the other 24 volt lines and the 100 volt service.
B. All wire shall be furnished in minimum two thousand, five hundred (2500) reels and
splicing shall be minimized. The Contractor shall use a pliers to twist the wires
together, three rotations/wraps minimum. After twisting the wires the Contractor
shall bind both wires together approximately three inches (3") back from the splice
using a plastic tie (lessens the pressure on the splice). The Contractor shall use
King Dryconn waterproof connector - sized appropriately for the wire to make the
splice water proof. All 24 volt wiring shall be done in accordance with existing
codes.
PART 3: EXECUTION
3.01 INSTALLATION, GENERAL:
A Observation of Work in Progress: The Owner's Authorized Representative shall be
responsible for observation of the Contractor's work while such work is in progress.
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02811 - 4
Said representative shall bring to the attention of the Contractor any observed work
which does not meet the specifications of this contract and the Contractor shall
correct such work as brought to his attention.
S. Sprinkler Repair Locations: The general locations where repair of the irrigation
system is required are delineated on the Site Irrigation Plan prepared by the City of
The Colony. The Contractor shall be responsible for exact on-site location of the
required repairs and receiving verification from the Owner's Representative prior to
initiating repair. The Contractor shall be solely responsible for bearing the cost
associated with exposing the irrigation system, even in areas where it is determined
that repair is not necessary.
C. Holes and trenches cannot be left open for more than twenty-four (24) hours without
fencing off the area.
3.02 EXCAVATION, BACKFILL AND PROTECTION OF SHRUBBERY, GENERAL:
A. All excavation in this contract shall be unclassified and is to include earth, loose
rock, rock, or any combination thereof, in wet or dry state.
B. All trenches shall be backfilled with the material removed, except where rock is
encountered. In this case, the backfill shall consist of existing on-site soils free of
rocks in excess of one inch (1") in their longest dimension. If the soil is extremely
rocky or the trench is cut into solid rock, the trench shall be over-excavated and
padded with two inches of soil or sand.
C. Backfill for trenches shall not contain any materials other than soil and rock as
delineated above. Garbage, trash, empty containers, metal pipe, railroad ties, etc.
shall not be placed in the trenches.
D. All trench backfill shall be flooded and compacted in order to prevent after-setting.
E. All trenches and adjoining areas shall be hand-raked to leave grade in as good or
better condition than before installation.
3.03 CLEAN-UP PREMISES: The contractor shall continuously keep a neat and orderly
area in which he is installing the system. Disposal of rubbish and waste material
resulting from the installation shall be continual. Upon completion of the system, the
contractor shall remove from the owner's property, at his own expense, all temporary
structures, rubbish, and waste materials resulting from the installation of said system.
3.04 ELECTRICAL WORK:
A. The existing system is operational; therefore, the Contractor will not be required to
install electrical power to the controller.
B. Following the completion of each repair, before the excavated area is backfilled,
the Contractor shall operate each valve surrounding the repair from the Controller
to ensure that each zone valve is operating properly.
C. Due to the excessive use of concrete in the installation of valves, thrust blocks and
other aspects of the installation of the system, numerous lengths of bundled
control/valve wires are embedded within huge slabs/chunks of concrete. To ensure
continued operation of the irrigation system on the existing watering program the
Contractor shall use the following method to identify the wires through the concrete
mass. Only one wire at a time shall be cut and only at one end of the concrete
mass; the portion to remain shall be marked using tape with a permanent marker.
An electrical signal shall be sent through the portion of the cut wire to be removed
(entombed within the concrete), which enables the Contractor to locate the other
end of the wire that is to remain. This identified end of the wire shall be marked to
match the wire where the first cut was made. All the wires within the bundle shall
be identified and tagged in this manner. All valves within the vicinity of the repair
shall be operated from the controller prior to the repair excavation being backfilled
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(reference'S' above). Wire splices shall be made as delineated within paragraph
2.14-B above.
3.05 PIPE INSTALLATION:
A. GENERAL:
1. Sprinkler mains shall be installed in an eight inch (8") wide (minimum) trench
with a minimum of eighteen inches (18") cover.
2. Lateral piping shall be installed in a six inch (6") wide (minimum) trench, deep
enough to allow for installation of sprinkler heads and valves as per detailed
installation instructions for each appurtenance, but in no case shall lateral piping
be installed with less than fourteen inches (14") of coverage.
B. PVC PIPE:
1. All lumber, rubbish and large rocks shall be removed from the trenches. Pipe
shall have a firm, uniform bearing for the entire length of each pipe line to
prevent uneven settlement. Wedging or blocking of pipe will not be permitted.
Pad the trenches with dirt or sand, if the soil is extremely rocky.
2. Never lay PVC pipe when there is water in the trench. Never lay PVC pipe
when the temperature is forty (40) degrees or below. PVC pipe will expand or
contract one inch (1 ") per ten (10) degrees change in temperature. Therefore,
pipe shall be snaked from side to side of trench bottom to allow for expansion
and contraction.
3. All foreign matter or dirt shall be removed from inside of the pipe before welding.
Piping shall be kept clean by approved means during and after laying of pipe.
4. Backfilling of Trenches: Because of the expansion and contraction of PVC pipe,
backfilling shall be done in the cool part of the day. If this is not possible or
practical, water flooding of trenches is necessary before and during backfill.
Selected fill dirt or sand shall be used if soil condition is rocky or contains
large clods. Tamping or water settling shall be done to the satisfaction of the
owner.
5. Handling of PVC Pipe: The contractor is cautioned to exercise care in handling,
loading, unloading, and storing PVC pipe. Any section of pipe that has been
dented or damaged will be discarded unless said section of dented/damaged
pipe is cut out and rejoined with a coupling.
C. EMBEDMENT PROCEDURES FOR IRRIGATION REPAIRS:
Due to the exceptionally large excavation required for irrigation system repairs the
following procedures shall be followed when backfilling excavated areas:
Pipe Support: The pipe shall be supported using dampened (not saturated)
bags of Sakrete set on undisturbed soil. Sufficient bags shall be placed at each
stack to support the pipe in a level/straight alignment. The Sakrete sacks shall
be centered on the pipe except in those locations where thrust blocks are
installed (reference "thrust blocks" below). Pipe support stacks shall be placed
in sufficient locations to ensure that reinstalled line does not dip between
supports.
Backfill: Backfill of the excavated areas shall be accomplished by the
placement of six-inch (6") loose lifts which shall be compacted before addition
of new material. Extreme care shall be used when compacting around pipe
support stacks, bundled wires, thrust blocks, valves, etc.
Control Wires: Bundles of control wire shall be taped to the underside of re-
installed pipe every ten-feet (10') using Gray Duct Tape.
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Expansion Coils: Place expansion coils within the control wires every fifty feet
(50') and at each side of the splice. Expansion coils shall also be placed at the
edge sides of the excavated area.
Sand Filler: Within each backfill lift use sand or a similar loose soil to fill voids
within the soil due to clods, clumps, small stones, etc.
Thrust Block: Place thrust blocks constructed of dampened bags of Sakrete at
all TEES, ELLS, etc. as required by the plans and specifications. The bags
used for thrust blocks shall be placed on the side of the fitting receiving the
thrust force. The bags shall be placed on top of the Sakrete stack (the Sakrete
stack shall not be centered under the pipe where thrust blocks are needed but
shall be offset to the side where thrust blocks are to be placed) and propped up
to cradle and support the main line pipe. Consult Owner's Representative for
installation advice or possible one time sample installation.
D. PVC PIPE AND FITTING ASSEMBLY: Contractor shall use only the solvent
(primer and glue) delineated and approved by the City to make solvent-welded
joints. The pipe and fittings shall be thoroughly cleaned of dirt, dust and moisture
before applying the primer and glue. The contractor shall make solvent welds with
a non-synthetic bristle brush in the following sequence:
1. Apply primer to the surfaces of the joint to receive a coating of glue, as
delineated within #2 below.
2. Apply an even coat of solvent to the outside of the pipe. Then apply solvent to
the inside of the fitting and reapply a light coat of solvent to the outside of the
pipe, making sure that coated area on both the inside and outside of the pipe is
equal to the depth of the fitting socket. Do not over-apply the glue (beyond the
joint). Wipe the joint clean after insertion.
3. Insert pipe quickly into the fitting and turn the pipe approximately one fourth (1/4)
turn to distribute the solvent and remove air bubbles. Check all tees and ells for
correct position; then hold joint for approximately fifteen (15) seconds so that
pipe does not push out from the fitting.
4. Allow at least fifteen (15) minutes set-up time for each welded joint before
moving.
5. Preferably all joints on the mainline shall dry for 24 hours, but minimally
overnight, before the system is re-pressurized.
6. On PVC to metal connection, the contractor shall work the metal connections
first. A non-hardening pipe dope such as Permatix #2, or equal, shall be used
on all threaded PVC to metal joints and light wrench pressure is all that should
be used or use Teflon tape with light wrench pressure.
7. Where threaded PVC connections are required, use threaded PVC adapters into
which the pipe may be welded. Teflon tape will be used on threads.
8. No gasketed pipe shall be used in repairs.
9. Mainline repairs three inches (3") and larger shall be made using Smith Blair,
Inc. 400 series coupling, Consult with the Owner's Representative regarding
proper installation techniques before making repairs using these couplings.
CAUTION: All pipes and fittings two and one half inches (22") and larger shall
be sanded, using a sanding sponge, to remove the glaze on the surface of the
pipe and fittings BEFORE solvent is applied. If sanding does no remove the
glaze, then the pipe and fittings shall be wiped with thinner prior to the
application of the solvent. Several PVC joints shall be chosen at random and
will be removed from the piping system for physical inspection. The joint will be
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sawed in half lengthwise so a cross section of the solvent weld can be
inspected. It shall be the irrigation contractor's responsibility to remake the joint
removed for inspection as part of this contract. The number of joints removed
will depend upon the number of joints found which are not properly bonded. A
minimum of one joint per repair will be tested and remade.
CAUTION: The irrigation contractor is cautioned to inspect the pipe and fittings
carefully to assure conformance with the standards as outlined in these
specifications. Fittings and piping that do not have a friction fit before the pipe
"bottoms" into the fitting will NOT be accepted under the terms of this contract.
Rejected pipe and fittings will be removed from the site daily to prevent
accidental use of this material.
3.06 HEAD INSTALLATION:
A. HEAD BACKFill COMPACTION: Backfill shall be specially tamped under the
head flange and around the head for a distance of one foot by a suitable means,
after trench backfill has dried from flooding. The purpose is to eliminate heads
being loose in the ground, which would allow heads to move when run over with
mowers, creating a possible source of damage.
B. WARRANTY REFERENCE: Refer to warranty regarding importance of backfill.
C. All SPRINKLER HEADS:
1. All sprinklers shall be installed on swing joints as shown in detailed drawings,
The sprinkler head shall be installed so that the top is at finished grade level. If
finished grade has not been established, the sprinkler will be extended a
minimum of four (4) inches above existing level and marked with a stake to
prevent damage by equipment. Backfill around the swing joint and sprinkler
shall be free of large rocks, roots or foreign debris.
2. All sprinklers shall be checked for proper operation and proper alignment for
direction of throw.
3. After system is thoroughly flushed and ready for operation, each section of
sprinklers must be adjusted to control pressure at heads. Use the following
method, one section per time: Remove last head on section and install a
temporary riser above grade. Install tee with pressure gauge attached on top
and reinstall head with nipple onto tee. Operate zone to determine pressure. If
pressure is outside of operating range advise landscape Architect and adjust
system to bring pressure within operational ranges.
D. POP-UP ROTARY SPRINKLERS:
1. Install all rotary heads as per the detail on the plan.
2. Install pop-up rotary heads on a suitable and functional swing joint consisting of
not less than three ninety (90) degrees threaded PVC ells and nipples with
Teflon tape on all threaded joints. Use of street ells is prohibited.
3. Pipe lines for sections of rotary heads must be flushed with heads removed.
Replace heads, being careful not to get dirty water or debris in the riser.
3.07 VALVE INSTALLATION:
A. Rainbird 2" PEB Electric remote valves shall be supplied and installed in
accordance with the specifications and sized according to the plan.
1. Before inground installation the Contractor shall perform the following
procedures on each valve.
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a. Install schedule 80 male adaptors on both sides of the valve. Male adaptors
shall be applied by placing the valve within a cushioned vise grip; three (3)
wraps of one inch (1") Teflon tape shall be placed on each male adaptor;
thread the male adaptor into valve by hand; when proper threading is assured
tighten each male adaptor using a suitable sized pipe wrench with a three
foot (3') cheater pipe extension; tighten male adaptors until they bottom out.
b. Remove and discard solenoid handle.
c. Place a stainless steel hose clamp on the valve's pipe body on the upstream
side (in-flow) of the valve.
2. Valves shall be installed in a level position. Valves shall be installed deep
enough so that there will be at least twelve inches (12") cover over the valve.
3. Manufacturer's specifications and installation instructions for the valve shall
become a part of these specifications.
(End of Section)
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