WA9601-CS 991112 SECTION 00900
ADDENDA
ADDENDUM NUMBER TWO ISSUE DATE: NOVEMBER 12, 1999
WAGON WHEEL PARK - PHASE I BID DATE: NOVEMBER 18, 1999
CITY OF COPPELL, TEXAS
ISSUED BY: Schrickel, Rollins and Associates, Inc.
1.This addendum modifies and extends the requirements of the plans and/or the project manual for the
above referenced project, dated October 1999.
2. Staple this addendum to the inside of the rear cover of the 8%"xl 1" project manual.
3. Mark all items notated to be marked on the plan sheets and specification pages.
4. Note receipt of all addenda on the line provided in the Bid Form.
PROJECT MANUAL
SECTION 00300 - BID FORM
1. Item 8.B.(6), Alternates: Replace this item as follows:
(6) DRILLING, LOGGING AND ABANDONMENT OF LOGGING/TEST HOLE FOR1
I
PALUXY WATER WELL (ALTERNATE CONSTRUGTION) I
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($ )1
(use words)
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2. Item 8.B: Add alternate bid item 8 to the Bid Form, page 00300-6.
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I (8) PRIMAVERA BERMUDAGRASS (ADD)
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Description of Alternate: This alternate is for the planting and establishment of the PRIMAVERA
Bermudagrass cultivar by seed, in lieu of Common Bermudagrass by seed, as required on the plans and in
Specification Section 02800 - Turfgrass Planting. PRIMAVERA shall be planted at a rate of not less than 1.5
pounds per 1,000 square feet or at a higher rate as necessary to achieve a Uniform Stand of turfgrass per
requirements of the Contract. THIS IS AN ADDITIVE ALTERNATE.
SECTION 02545 - INTERLOCKING CONCRETE PAVERS
1. Part 2 - Products, 2.01: Add Item A.4. as follows: Featherlite Building Products Corporation, Dallas,
Texas, (972) 263-8090.
ADDENDUM NUMBER TVVO
3987 00900 - 1
SECTION 02666 - GEOMEMBRANE
1. Part 2 - Products, 2.3, A. 1 .: Change "Low density, 0.910 to 0.925 g/cu.cm..." to read "High density, 0.940
g/CC..."
2. Delete Item 2.3, A. 2.
SECTION 02832 - SEGMENTAL RETAINING WALLS (Addendum No. One)
1. Part 2 - Products, Item 2.2, A.: Add Item 2 as follows: All wall units shall be solid concrete. Wall units that
have voids or cells, and units that require caps to cover gravel-filled cells, will not be accepted as an
approved equal.
SECTION 02870 - MISCELLANEOUS PARK EQUIPMENT
1. Part 2 - Products, 2.01: Change the first sentence which reads "Dugout benches are thirty (20') length..."
to read "Dugout benches shall be twenty (20') feet long..."
SECTION 02975 - VERTICAL TURBINE VARIABLE FREQUENCY DRIVE PUMP STATION
2. Item 5.10e - Add the following sentence: In addition to automatic lake level controls to operate the deep
well pumps and to open and close the potable water supply valve, provide an additional (separate) set
of automatic controls for 2 future pumps. Label on terminal strip as well number 2 (future).
3. Item 6.1: To the end of the sentence add the following: "...for connection to the irrigation piping at a point
3' below floor level. Terminate with an 8" flange."
SECTION 04711 - MANUFACTURED STONE
1. Part 2 - Materials, 2.01: Add Item B as follows: Coronado Stone Products as supplied by Featherlite of
Dallas, (972) 263-0890.
SECTION 13120 - PRECAST CONCRETE BUILDING - PREFABRICATED (Addendum No. One)
1. Part 1 - General, 1.01: Change the last sentence as follows: Change "...Lonestar Prestress Mfg., Inc.,
Houston, Texas, or approved equal." to read "...Lonestar Prestress Mfg., Inc., Houston, Texas, (713) 896-
0994 or (800) 600-1719, contact Leo Rowe, or approved equal."
2. Part 2 - Products, 2.01: Add Item G as follows: Contractor shall provide core-drilled holes or sleeves for
conduit through concrete foundation at all electrical, irrigation and miscellaneous panels. Locations and
sizes shall be approved by Engineer prior to installation.
SECTION 13122 - SHADE STRUCTURES
1. Add the enclosed two (2) page Section 13122, labeled "Addendure No. Two" to the Project Manual.
DRAWINGS
SHEET L-'I5 - SITE DETAILS
1. Detail 4: 4" Professional ADS Pipe with sock is to be installed with a minimum embedment of 4" of
washed concrete sand on all sides.
SHEET L-6A - GRADING PLAN (A)
1. Bar scale is incorrect. The drawing scale is 1"=40'.
SHEET L-13 -SITE DETAILS
1. Tree Planters per detail 1/L-5, mirror image on east side of circular plaza.
SHEET C-3 - STORM DRAINAGE LAYOUT
1. Lateral from curb inlet Sta. 5+79.17 Main D to field inlet shall be 18" RCP.
ADDENDUM NUMBER TWO
00900 - 2
2. Lateral from curb inlet 1+96.03. Lateral D-4 to field inlet shall be 18" RCP.
3. Correct Station 5+79.17 Main D at curb inlet to read Station 6 + 64.01. Depth of ring is 6". Adjust paving
depth to 6" to 1 'outside inlet box.
4. Grate Inlet - Inlet Frame and grate to be Model 5600, Vulcan Foundry - modify detail to embed frame in
sides of inlet.
SHEET C-4 - EROSION PROTECTION
1. Install erosion control matting - (Curlex blankets as manufactured by American Excelsior, Arlington,
Texas 76005, P.O. Box 5624, 900 Ave. H. East, (817) 640-2161 or (800) 777-2691 ), over filled area at
Station 10+00 to 11+00+ and seed in accordance with Section 02800 - Turfgrass Planting.
SHEET C-7 - PRESSURE RELIEF VALVE
1. Reinforcing for base to be ~ bars at 8" each way. Seal pipe to concrete base.
2. 2' Diameter Grate Inlet - Heavy duty grate and ring to be Model V3348-2 with round pattern grate, Vulcan
Foundry.
SHEET C-8 - SANITARY SEWER LAYOUT
1. Erosion Protection - Station 10+00 to 15+00. Install erosion control matting - (Curlex blankets as
manufactured by American Excelsior, Arlington, Texas 76005, P.O. Box 5624, 900 Ave. H. East, (817)
640-2161 or (800) 777-2691), over ditch area and adjacent disturbed areas. Seed in accordance with
Section 02800, Turfgrass Planting.
2. Ductile Iron Pipe: Ductile Iron Pipe to have a factory applied interior lining of polyethylene or polyurethane
to a minimum thickness of 40 mils.
3. 4" PVC Sewer Service: Add 4" Wye west of grease traps and extend 4" PVC to point within 5' of
concession/restroom bldg. See Sheet P-1 Note 3.
SHEETS C-8, C-9, C-10 AND C-13
1. Replace these sheets with the revised sheets C-8, C-9, C-10 and C-13 dated 11-12-99.
SHEET C-12 o IRRIGATION SUPPLY SYSTEM
1. Section A-A:
a. Correct bottom elevation of manhole to 489.0.
b. Note should read, 'Provide Watertight Seal to Pond Liner.'
c. Fill line from water well is 8" Vertical Pipe and horizontal nipple are plain and pieces.
2. Irrigation Water Manhole:
a. 8 x 8 cross is Flange by Flange
b. Add 1-8" Flange X MJ Adaptor
3. Irrigation Wet Well Detail:
a. Change base dimension from 94" to 106".
b. Change reinforced concrete pipe diameter from 60" to 72".
SHEET IR-2A THROUGH IR-2C - IRRIGATION PLAN
1. Locations of irrigation mains 4" to 12" are schematic and for information only. Refer to Civil Sheet C-13
for actual location and sizing.
2. Locations of sleeves for control wiring and irrigation lines under paved surfaces are shown this sheet.
It is anticipated that construction scheduling will require installation of these conduits by contractor
installing irrigation main lines. Conduits to extend 2' beyond paving. Temporarily cap each end and mark
with tape. Provide cover of 30" below finished grade or paved surface.
ADDENDUM NUMBER TWO
00900 - 3
SHEET IR-3 - IRRIGATION DETAILS
1. Pump Station Detail:
a. Change pump configuration to 4 total pumps: 2 installed in this Work, Phase I; 2 to be installed at
a later date. (Future pumps are not in this contract.)
b. Change wet well dimension to 72". Skid dimension will be furnished to successful bidder.
c. Change min. 200 amp service to rain, 400 amp service.
d. Elevation: Change the #11 Callout pointing to the skid structure to #12.
SHEET S-2 - PUMP HOUSE & STORAGE BUILDING FOUNDATION PLAN - PUMP HOUSE
1. Change beams at wet well from 6'-0" center-to-center to 7'-0" center-to-center.
2. Detail 1 - Section at Leave Out Slab: Change opening dimension from 1 '-0" to 1 '-8".
3. Detail 2 - Section: Change opening from 5'-0" to 6'-0".
SHEETS A-2, A-4 AND A-7
1. All G. 1 Flashing associated with roofing shall be changed to a prefinished product. Color to match roof
color.
SHEET A-I - FLOOR PLAN & SCHEDULES
1. General Notes: Add No. 5 as follows: Ceiling in breeze-way shall be B.D.X. %" TI-11 plywood with lx2
and lx4 R.S. cedar trim. Prime and paint plywood. Plywood shall have grooves at 4" o.c,
SHEET A-2 - ELEVATIONS
1. Detail 1/A-2 and 2/A-2:
a. Add note as follows: Refer to attached AD-2 and AD-3 sheets.
b. North and south gabled roof shall extend to front edge of lattice area. Refer to Structural Sheet S3.
SHEET A-3 - ELEVATIONS
1. Details 1/A-3 and 2/A-3: Two Solatubes shall be in each men's and women's restroom. Four are required
and shall be spaced as to miss light fixtures or gdlls. Refer to Detail 7/A5.
SHEET A-6 - PUMP HOUSE & STORAGE BUILDING FLOOR: ROOF PLANS
1. Details 2/A-6 and 3/A-6: Change skylight from 6'x6' to 10'x6' with center of the skylight located at the
center of the roof.
SHEET A-7 o PUMP HOUSE & STORAGE BUILDING ELEVATIONS & DETAILS
1. Details 8/A-7 and 9/A-7: Skylight shall be 10'x6' with center of the skylight located at the center of the
roof.
SHEET P-2 - SCHEDULES AND DETAILS PLUMBING
1. Grade cleanouts to have countersunk brass plug installed flush with concrete.
2. Grease trap - grease trap to be installed in grass area with minimum of 12" of cover. Provide riser rings
and manhole frames and covers to adjacent openings to grade. Paint per Sheet C-8. Color to be
"Balsam".
SHEET E-I 1 - RESTROOM/CONCESSION BUILDING AND PUMP HOUSE FLOOR PLANS-POWER
1. Pumphouse Floor Plan:
a. Disconnect switch for irrigation equipment shall be a 3P-600A in lieu of a 3P-400A.
b. Circuit to irrigation equipment shall be two 3" conduits with three 350 kcmil and one #1 ground in
each in lieu of three 350 kcmil and one #4 ground in 3'/=" conduit.
ADDENDUM NUMBER TVVO
00900 - 4
SHEET E-14 - MAIN PANEL "MPC" SCHEMATICS
1. Main Panel "MPC":
a. Main breaker frame shall be 800 amps with 800 amp trip.
b. Circuit breaker #5 irrigation equipment shall be a 3P-600 with trip amps of 600.
2. Electrical Schematic: Feeder to main panel "MPC" shall be two 3%" conduits with four 600 kcmil in each.
END OF ADDENDUM NUMBER TWO
ADDENDUM NUMBER TWO
00900 - 5
1. Item 8. B.(6), Alternates: Replace this item by cutting it out and affixing it by tape or adhesive to Bid Form,
page 00300-6 .)
(6) DRILLING, LOGGING AND ABANDONMENT OF LOGGING/TEST HOLE FOR
PALUXY WATER WELL (ALTERNATE CONSTRUCTION)
($ )
(use words)
2. Add this altemate bid item to the Bid Form by cutting it out and affixing it by tape or adhesive to Bid Form
page 00300-6 in the blank space at the bottom of the page (below Item 8.B.(7), Cash Allowance).
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I (8) PRIMAVERA BERMUDAGRASS (ADD)
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ADDENDUM NUMBER TWO
00900 - 6
SECTION 02975
VERTICAL TURBINE VARIABLE FREQUENCY DRIVE PUMP STATION
SCOPE OF WORK
It is the intention of this specification to describe an automatic, prefabricated pump station for irrigation
purposes. Design, fabrication, testing and service shall be the sole responsibility of the pump station
manufacturer. The pump station shall provide water to the irrigation system by using a prefabricated pump
station with variable frequency drive (VFD) pumps for pressure regulation with Electronic Butterfly Valve (EBV)
backup pressure regulation under varying flow conditions up to the maximum specified capacity.
SECTION 1: GENERAL
1.1 The prefabricated pumping station shall have a minimum capacity and discharge pressure at skid edge
as described in the technical specifications. The overall pump length shall extend to within twelve inches of
the bottom of the wet well. The pumps shall operate at no more than 1800 RPM.
1.2 The station shall be completely wired, piped, hydraulically, electrically, and flow tested to full station
capacity at factory prior to shipment to job site. Documentation of dynamic test shall be verified by owner prior
to pump station shipment. . ~
1.3 Construction shall include a fabricated steel plate and skid assembly to support all components during
shipping and to serve as the installation mounting base.
1.4 The discharge manifold from the pump station shall terminate at or near the pump station skid edge and
be provided by the pump station manufacturer.
The station shall be a WATERTRONICS Model VTV-501501(50)I(50)I5ST conforming to the following
specifications.
SECTION 2: MANUFACTURER REQUIREMENTS
2.'1 MANUFACTURER
The pump station shall be manufactured by Watertronics, Inc., Hartland, Wisconsin or approved equal. To
gain approval as an equal, the following information must be furnished by the contractor or manufacturers
representative:
a. A complete specification and submittal of all major components for the proposed pump
station with individual pump performance verification.
b. A detailed pump station proposal drawing complete with component location, sizes and
dimensions specific to the installation.
c. A complete electrical schematic for all high and low v~ltage circuits showing breaker/fuse
sizing, wire numbering and color.
d. Pump station manufacturer's U.L. file number for the electrical controls.
e. A copy of the manufacturer's certificate of insurance.
VERTICAL TURBINE VARIABLE FREQUENCY DRIVE PUMP STATION
02975-1
addendum No. Two
SECTION 3: PUMPS AND MOTORS
3.1 VERTICAL TURBINE PUMPS
Bowl assembly including suction case, intermediate bowls and discharge bowls shall be of cast iron. The
impellers shall be of bronze, statically balanced. Impellets shall be adjusted vertically by means of an adjusting
nut located at the top of the driver. Each pump shaft is to be turned, ground and polished stainless steel
having a chromium content of not less than 12%. It shall be supported by bearings above and below each
impeller. The size of each shaft shall be appropriate to transmit the horse power required by the pump.
Each turbine pump inlet strainer shall be corrosive resistant basket type with an area not less than four times
the pump suction bell inlet area.
The discharge column pipe shall be furnished in interchangeable sections with flanged or threaded couplings.
The line shafts shall be ground and polished stainless steel, and shall be coupled with steel couplings, have
left hand threads which tighten during operation. Drop-in type shaft centering spiders shall be provided at each
column coupling at maximum 10' spacing. The section of shaft passing through the stuffing box shall be
stainless steel having a chromium content of not less than 12%.
3.1a DISCHARGE HEAD
Each pump shall be supplied with a surface discharge head having a flanged discharge opening. The top
diameter of the discharge head shall match the motor base to distribute the load uniformly. The minimum
operating pressure of each discharge head shall be no less than 30% higher than the maximum output
pressure of the pump. The discharge head shall include a high pressure stuffing box or mechanical seal as
called out by the technical specifications. The discharge head shall be provided with a drain for the stuffing
box waste water. No waste water shall be permitted to run onto the skid surface.
3.1b STUFFING BOX
Each pump discharge head shall contain a stuffing box assembly located where the pump shaft protrudes
through the pump discharge head. The discharge head shall include a cast iron stuffing box complete with
O-ring, gland, bypass line, bronze bearing, lantern ring, packing and water slinger. The stuffing box shall
contain an adjustable venting port with bypass tubing to reduce pressure from the packing above the lantern
ring.
3.1 c MOTORS:
Each pump driving motor shall be squirrel cage induction, Inverter grade Insulation, vertical hollow-shaft type.
The motor shall be covered by a th ree-year manufacture warranty. The motor shall meet N EMA standard MG-
1, Part 31. The connection to the pump shaft shall be bolted-down type couplings in the motor. The
temperature rise of the motor shall be to NEMA standard MG-1-12.42 for Class B or Class F installation. A
thrust bearing of ample capacity to carry the weight of all rotating parts plus the hydraulic thrust of the pump
shall be incorporated into the motor. The bearings shall be of such size and rating that the average life is no
less than five years continuous operation. The motor shall be of proper size to drive the pump at any point on
the operation curve without exceeding the percent of the motor horsepbwer nameplate rating as called out
in the Technical Specifications.
3.2 PRESSURE MAINTENANCE PUMP
For the purpose of maintaining system pressure and satisfying low flow irrigation demands, a pressure
maintenance pump shall be incorporated in the system. Pressure maintenance pump shall be submersible
type, constructed of stainless steel with a 3600 RPM, high efficiency motor. The pressure maintenance pump
shall perform as specified by the technical specifications. Grundfos Stainless Steel Pump and Motor.
VERTICAL TURBINE VARIABLE FREQUENCY DRIVE PUMP STATION
02975 - 2
Addendum No, Two
SECTION 4: SKID, PIPING, VALVES, GAUGES, MECHANICAL EQUIPMENT
4.1 SKID CONSTRUCTION
Pump station skid shall be formed from a single sheet of %" steel, continuous welded and smooth ground at
all corners resulting in a seamless, one piece structure with rounded edges and corners. Two 3" holes shall
be located at each corner of the skid, on the side wall, for the purpose of lifting the pump station. The skid
shall be strategically reinforced underneath with 6" structural channel iron to support pumps, manifolds, control
enclosures and periphery. The finished skid height shall be 6-3/8". The skid shall be drilled and tapped for
mounting of pumps, manifolds, tanks, relief valves and other equipment. All tolerances shall be sufficient to
permit direct bolting of pump station components to skid. No slotted holes shall be permitted in the pump
station skid and no nuts or bolt heads shall be permitted on the under side of the skid. The pump station skid
shall cover the wet well completely, without the need for a separate wet well cover plate. The pump station
skid shall incorporate an integral wet well access hatch measuring not less than 16 inches by 24 inches. The
access hatch door shall be both hinged and removable. For safety purposes, the wet well hatch access handle
shall not protrude above the skid surface. The skid shall be primed and painted per enclosed specification on
both top and bottom.
4.2 FABRICATED PIPING
All fabricated piping shall conform to ASTM specifications A53 for Grade B welded or seamless pipe.
Discharge piping 8" and above shall be a minimum of Schedule 10. Discharge piping 6" and smaller shall be
Schedule 40. All welded flanges shall be forged steel slip-on or weld neck type. All welded fittings shall be
seamless, conforming to ASTM Specification A234, with pressure rating not less than 150 psi.
4.3 DRAINS
Drains are to be provided from any possible low point in the system and are to be equipped with %" or ¼"
brass valves. Drains shall include, but are not limited to, the following:
- Drain for each pump discharge check valve
Drain in discharge manifold upstream of station discharge isolation valve.
A wash down %" brass hose bib on the discharge manifold, upstream of the main station isolation
valve.
4.4 PUMP CHECK VALVES
Pump check valves shall be of the center guided, disc non-slam type, cast iron bodied with bronze and
stainless steel trim. Sealing surfaces shall utilize resilient Buna-N-rubber. The pump check valve manufacturer
shall be Flowmatic, Model # 888.
4.5 ISOLATION VALVES
Each Pump shall be isolated by means of a butterfly valve after the ch~ck valve and before the discharge
manifold. The discharge manifold shall also have an isolation valve at the skid edge. Isolation valves shall be
butterfly type with ten position lever for valves 4" and smaller or gear operators for valves 5" and larger, rated
for 200 PSI WOG working pressure. Trim shall include stainless steel stem, bronze or nickel coated iron
streamlined disk with full faced resilient seat design to eliminate need for flange gaskets. The valve shall be
manufactured by Watts, Centerline or approved equal.
VERTICAL TURBINE VARIABLE FREQUENCY DRIVE PUMP STATION
02975 - 3
Addendum No. Two
4.6 PRESSURE RELIEF VALVE
A pressure relief valve shall be installed on the discharge piping downstream of the pressure regulating
valves. The valve shall be sized to bypass sufficient water back to the water source to avoid the discharge
pressure from exceeding the maximum programmed pressure set point by more than 10 PSI. The bypass
valve shall be modulating type as manufactured by Cla-Val, or approved equal. Relief valve shall include an
electric, 3-way, normally open diverter valve that will energize when no pumps are in operation to vent off pilot
valve sensing pressure and potential seat leakage.
4.7 SYSTEM AIR RELEASE
Individual pump column air shall be purged prior to entering the pump station discharge manifold. An air
release assembly shall be located on each pump discharge head, upstream of the pump check valve.
Separation reservoirs or tanks with air/water balance controls shall not be accepted. As additional protection
from air entrapment, the pump station discharge manifold shall contain one continuous acting air release
valve.
4.8 PRESSURE GAUGES
A pressure gauge shall be located on the discharge manifold for the purpose of measuring regulated,
downstream pressure. Pressure gauge shall be 304 stainless steel case and bezel construction. Gauge shall
be 2-1/2" diameter, liquid filled. Pressure sensing connection shall be ¼" NPT lower gauge connection.
Pressure gauge shall be model 7211-2.5 as manufactured by ENFM USA, Newburgh, NY or approved equal.
SECTION 5: U.L. LISTED CONTROL PANEL, LOGIC AND SENSORS
5.1 GENERAL
The pumping station electrical controls shall be mounted in a self containing NEMA 4 enclosure fabricated
from not less than 12 gauge steel. Door gasket seals shall be neoprene sponge, sufficient to protect interior
components from weather and dust. The electrical panel doors shall be constructed from 12 gauge steel with
integral latches.
All external operating devices shall be dust and weather proof. All internal components of the enclosure shall
be mounted on a removable back panel. Mounting screws for components shall not be tapped into the
enclosure wall.
No pressure gauges, pressure switches, water activated devices, or water lines of any sort shall be installed
in any electrical control panel.
The control panel shall be designed, built, tested and U.L. listed by the pump station manufacturer.
5.2 VARIABLE FREQUENCY DRIVE (VFD)
The variable frequency drive shall be IGBT based with selectable carrier frequency up to 15 KHZ. The VFD
shall include terminals for incoming power, motor output power and control terminals.
The VFD shall generate a sine-coded, variable voltage/frequency, three phase output for optimum speed
control. The VFD shall incorporate power loss ride-through for a minimum of 2 seconds. VFD protective
features shall include current limit, auto restart, short circuit protection, electronic motor overload protection
and ground fault protection. The VFD shall have a push button programming display for easy access to
operation parameters. The VFD shall be protected on the primary side by fuses of the appropriate amperage.
VFD shall be Magnetek Model 505 or equal. Output of VFD will have a line reactor. In the event of a VFD fault
the Discharge pressure regulation shall automatically switch to Electronic Butterfly Valve (EBV) Pressure
regulation. Adjustment of regulated downstream pressure shall be accomplished through the control panel
operator interface. Each main pump shall have Individual EBV's. The maximum allowable pressure drop
across the butterfly valve at full pump capacity shall not exceed one psi.
VERTICAL TURBINE VARIABLE FREQUENCY DRIVE PUMP STATION
02975 - 4
see7 Addendum No. Two
5.3 MAIN SERVICE DISCONNECT
A three-pole, main station disconnect shall be contained within the NEMA 4 control enclosure. An externally
mounted service disconnect shall not be acceptable. Disconnect shall be non-fused and isolate all power to
the control enclosure. The disconnect shall have an operating handle mounted in the enclosure door,
mechanically interlocked to prevent entry while disconnect is in ON position. Disconnect by ABB.
5.4 MOTOR FUSES, STARTERS AND OVERLOADS
Each starter shall be protected on each power leg by a time delay fuse of the appropriate amperage. Motor
starter coils shall be 120 volt operated. Overload relays shall be electronic type, ambient compensating and
differential tripping type. Bi-metallic or melting alloy type overloads shall not be permitted. The overload shall
protect each power leg and shall be set to the motor full-load current rating. Further protection shall include
sensitivity to current imbalance and single phase conditions. Starter and O.L. by Allen Bradley.
5.5 CONTROL TRANSFORMER
A control transformer shall provide 120 volt power to the pump station controls. The control transformer shall
be protected on primary and secondary sides with appropriately sized fuses. No load other than the pump
controls shall be supplied by the control transformer.
5.6 LIGHTNING ARRESTER
The main power supply feeding the pumping station shall be equipped with a 3 phase secondary lightning
arrester having a breakdown current rating of not less than 60,000 amps at 14,000 Volts discharge. Power
supplies, 300 Volts and less, shall use 300 Volt rated arresters with an 800 Volt spark-over Voltage. Power
supplies 301-600 Volts shall use 600 Volt rated arresters with a 1,000 volt spark-over Voltage.
5.7 SECONDARY CONTROL CIRCUIT FUSES
Single-pole secondary distdbution fuses with appropriate ratings shall supply power to each pump starter coil
circuit, the control system and to other circuits as specified.
5.8 PHASE MONITOR
The incoming power shall be protected by a failure/low voltage system dropout relay to de-energize the pump
station controls if either a phase failure, phase reversal or low voltage condition occurs. If, after attempted
automatic re-starts the phase failure/low voltage alarm condition remains, the alarm must be manually reset.
Individual motor overloads will also act as phase monitors.
5.9 CORROSION INHIBITING MODULES
Corrosion inhibiting modules shall be installed in all electrical enclosures in accordance with the manufacture's
recommendations.
5.10 CONTROL LOGIC
The pump sequence controller shall be an industrial grade PLC with diagnostic LED's for monitoring of
discrete inputs and outputs. Not less than two additional analog inputs and outputs shall be standard for
monitoring and control purposes. The PLC shall contain two communication ports for monitoring and
programming purposes. The PLC shall contain an EEPROM, battery backed RAM and non volatile memory
for storage of critical configuration data. Manufactured by Modicon, a division of AEG.
5.10a SEQUENCE OF OPERATION:
Upon a drop in pressure to the set point, the sustain pump will start, and run until cutout pressure has been
reached, and flow has diminished to less than the minimum set point, and programmed time delay has
VERTICAL TURBINE VARIABLE FREQUENCY DRIVE PUMP STATION
02975 - 5
Addendum No. Two
,._. --.%.
elapsed. If flow exceeds sustain pump capacity, the lead main pump will start via VFD and accelerate to
maintain constant downstream pressure and the sustain pump will be retired. If flow exceeds the capacity of
the lead pump, the lead pump will switch to X-line mode, the VFD will connect to the lag pump, and the VFD
will modulate the lag pump speed to maintain constant pressure. Sequence repeats until all pumps are on line.
Lead and lag pumps together shall meet the total system demand called out by the technical specifications.
As flow diminishes, the lead pumps shall be retired first. The last pump on shall operate until flow drops below
adjustable set point and programmed time delay has elapsed. The user shall be able to select through the
operator interface whether the lag pump is started by the VFD or started X-line,
5.'10b AUTOMATIC PRESSURE REGULATION BASED ON VARIABLE FLOW
The pump station controls shall be capable of changing the regulated downstream pressure while in operation,
based on discharge flow or discrete input as called out by the technical specifications. The pump station
controls shall also be capable of up to six, user adjustable pressure regulation set points based on discharge
flow or one additional set point based on a discrete input. In addition to adjustment of downstream pressure,
the controls shall be capable of up six pressure regulation algorithms to insure accurate pressure regulation
regardless of regulated pressure, discharge flow or connected pump combination.
5.10c LEAD PUMP SELECTION
Lead selection of equal homepower pumps shall be accomplished by total accumulated pump running time.
Unless manually overridden, the pump with the lowest accumulated running time shall be the next pump
started in the sequence. Alternating logic for selection of lead pump shall not be accepted.
5.10d ALARMS
Controls shall shut down the pump station in the event of the following alarm conditions. The controls shall
attempt to restart the system after alarm shutdown or loss of power to minimize loss of irrigation. After a user
adjustable number of attempts to repressurize the system, the controls will go into hard shut down and remain
there until manually reset.
1. Low discharge pressure cutout. Pressure remains 20 PSI below regulate set point for set time delay.
2. High discharge pressure cutout. Pressure remains 11 PSI above regulate set point for set time delay.
3. Phase/voltage cutout. High or low voltage, loss of phase or phase reversal.
4. Low intake water level cutout. Wet well or pond level remains below set point for set time delay.
5. Starter fail cutout. Output to starter is not met with corresponding running input for set time delay.
Indicates overload, phase imbalance or control fuse.
6. VFD fault with automatic switch to EBV control.
5.10e DUPLEX LAKE LEVEL CONTROLS
Duplex lake level controls shall be installed in the control cabinet, designed to maintain the proper lake level
in the irrigation lake using two different water sources - a remote deep well pump and potable water. The lake
level probes shall be installed in a still well (installed in the pump station wet well), and shall be designed to
monitor the lake level. When the lake level starts falling, a signal will be sent to either start a remote deep well
pump or to open a remote fill valve supplying potable water, based on operator's selection. Controls shall allow
separate operation of each source or dual operation when conditions require. As the lake level rises, both
sources shall cut off when optimum lake level is reached. Controls shall operate in manual and automatic
modes. Provide terminal strip for connection to remote sites.
VERTICAL TURBINE VARIABLE FREQUENCY DRIVE PUMP STATION
02975 - 6
3987 Addendum No. Two
5.11 OPERATOR INTERFACE
Mounted in the enclosure door shall be an operator interface for logical display of all pump station functions.
The operator interface shall be NEMA 4 rated for mounting in the control enclosure door. The operator
interface shall be touch sensitive with intuitive on-screen user instruction for ease of operator use. The use
of buttons or keys or off-screen user instructions shall not be permitted. The operator interface shall be LCD
type with no less than 240 x 320 pixel resolution, with viewing area measuring not less than 5" diagonal. User
memory for storing critical pump operation data shall not be less than 1 MB.
The operator interface shall allow the user to view and modify all pertinent operation parameters. The operator
interface shall incorporate password protection for modification of critical pump station parameters. The
operator interface capabilities shall include but are not limited to the following:
a. Display of pressure in PSI, flow in GPM and total gallons pumped in thousands of gallons.
b. Separate display for total gallons pumped with operator reset capability and time stamping.
c. Pump control and running status.
d. Individual pump total elapsed run time display.
e. Alarm status with time stamping and display of pump station conditions at shutdown.
f. Number of attempts remaining to repressurize the system before hard shutdown after
interruption of service with reset capability.
g. Status of optional auxiliary equipment such as strainer flushing or pond fill pumps with
momentary-on override capability.
h. Real time, X - Y plot (trending) of pump station operation, including pump starts and stops,
pressure, flow and alarms.
i. Override for automatic pump alternation.
j. Adjustment of automatic/manual pressure regulation set points.
k. Pressure set points, flow set points, electronic flow limiting threshold and pressure regulation
tuning for the VFD.
5.12 PRESSURE TRANSDUCER
A solid state pressure transducer shall provide a noise free, linear output proportional to discharge pressure.
Transducer shall be solid-state, strain gauge type with integral voltage regulation and output accuracy not less
than 0.25%. Transducer shall be constructed of stainless steel and rated for the pump station discharge
pressure called out in the technical specifications.
5.13 FLOW SENSOR
The pump station discharge manifold shall incorporate an insertion type, pulse frequency output flow sensor
for continuous output to pump station controls. The flow sensor output pulse shall be conditioned and fed
directly to the PLC interrupt input for conversion and display in Gallons Per Minute. For accuracy and security
considerations, conversion to an analog signal prior to PLC input shall not be accepted. Flow sensor accuracy
shall be no less than 2% for flow velocities ranging from 1 - 30 feet per second.
VERTICAL TURBINE VARIABLE FREQUENCY DRIVE PUMP STATION
02975 - 7
Addendum No. Two
SECTION 6: ADDITIONAL EQUIPMENT
6.1 DROP (Z) PIPE CONNECTION TO IRRIGATION SYSTEM PIPING
A fabricated steel drop pipe shall be provided. It shall include a gruvlok coupling for positioning to the
irrigation trench, a blowout fitting for winterization and custom termination for connection to the irrigation
piping (beveled end, flange or NPT).
SECTION 7: SKID WIRING
Skid wiring shall conform to National Electrical Code Standards. All wiring from control panels to motors
shall be in metal reinforced, water tight, flexible conduit with copper conductors rated not less than 600 volts
and of proper size to carry the full load amperage of the motors without exceeding 70% capacity of the
conductor. Flexible conduit runs shall not exceed six feet in length. A grounding cable sized to National
Electrical Code requirements shall be included in the flexible conduit. There shall be no splices between the
motor starters and the motor connection boxes.
Wiring to flow sensors, and pressure transducer shall be multi-conductor shielded cable suitable for Class
II low voltage controls. Wiring to motor operated valves,(option available for VFD stations), shall be in
flexible conduit with TFFN #18 gauge copper conductors rated not less than 600 volts.
SECTION 8: CONSTRUCTION
Construction shall be of modular form utilizing a steel base structurally adequate to support pumps, piping,
tanks, and electrical equipment as a single integral assembly. All nuts, bolts, washers, and fasteners shall
be zinc or cadmium plated for corrosion resistance.
SECTION 9: PAINTING
Painting of the entire unit shall consist of a multi-step coating system including metal preparation, a rust
prohibitive epoxy prime coat and a two part ultraviolet insensitive polyurethane finish having a total dry film
thickness of not less than 5 mils. Each coat will be applied and baked for one half hour at 165 degrees F.
All pump station components including skid, manifolds, isolation and relief valves, grooved clamps and
supports shall be painted medium green. All electrical enclosures and accessory panels, motors and tanks
shall be appliance white.
SECTION 10: TESTING
The pump station manufacturer shall conduct and document a complete factory dynamic test of the pump
station prior to shipment. Pump station shall be tested throughout the entire operating range at the net
discharge pressure called for in the technical specifications. Individual pump pressure, flow, RPMs, volts,
amps, KW and power factor shall be documented for verification by the consulting engineer or owners'
representative prior to delivery.
SECTION 11: ON-SITE START UP
Shipping and off-loading to be arranged by purchaser. Technical start up shall be furnished by the pump
station manufacturer or a qualified service agency. Location and mounting details shall be furnished by the
pump station manufacturer. Electrical connection, by purchaser, shall consist of a single conduitfrom owners
disconnect to the pump station main disconnect. Additional purchaser responsibility shall include confirming
correct motor rotation and securing local inspection/approval.
Technical start up procedures by the pump station technician shall include the following:
a. Station start up and pressurization.
VERTICAL TURBINE VARIABLE FREQUENCY DRIVE PUMP STATION
02975 - 8
Addendum No. Two
b. Pressure, flow and programming adjustments.
c. Monitoring of complete golf course irrigation cycle when possible.
d. Customer training and presentation of owners manual.
SECTION .12: WARRANTY
The manufacturer shall warrant the pumping station to be free of defects and product malfunctions for a
period of one year from date of final acceptance. Failures caused by, lighting strikes, power surges,
vandalism, flooding, operator abuse, or acts of God are excluded from warranty coverage.
SECTION '13: SITE PREPARATION DRAWINGS
Site preparation drawings shall be furnished by the manufacturer within two weeks after receipt of order.
Drawings shall indicate pump station alignment, discharge piping size, and electrical services required from
local contractor. The owner shall return one set of drawings marked approved or corrected within one week
of receipt.
SECTION '14: OPERATION AND MAINTENANCE MANUALS
Operation and maintenance manuals shall be furnished at time of start up and initial training. Three sets of
the Operation and Maintenance Manual will be provided as specified. Manual includes troubleshooting guide
and recommended service intervals. Owner will also receive training specific to this station as specified.
END OF SPECIFICATION: Wagon Wheel Park
VERTICAL TURBINE VARIABLE FREQUENCY DRIVE PUMP STATION
02975 - 9
3987 Addendum No. Two
IRRIGATION PUMP STATION TECHNICAL SPECIFICATION
Watertronics, Inc.
Project name: Wagon Wheel Park
Design criteria: Automatic pump station for turf irrigation
Pump station model #: VTV-50/50/(50)/(50)/SST
Quantity of pumps: 3 (5 @ final buildout)
Pump station capacity: 1200 GPM at 90 PSI (2400 GPM at 90 PSI @
final buildout)
Power supply: 3 phase, 460 Volt, 60 Hertz
MOtOr and Pump Data
Parameter Jockey Pump Pumps 1 & 2 (future 3 &
4)
Motor SpeC. MOtOr Franklin Electric U.S. Motors-Varidyne
Manufacturer W/3 year warranty
MOtOr horsepower 5 50
MOtor rpm 3600 1800
Motor service factor 1.15 1.15
Motor efficiency 74% 94.5%
Motor power factor 81% 85.3%
MOtOr type SUB VHS/ODP
MOtor disconnect volts 600 600
Motor full load amps 8.9 65
Motor fuse AIC rating 200,000 200,000
MOtOr starter type XL VFD
Pump Spec. Pump GOuldS American Turbine
Man ufacturer
Pump gpm 50 600
Pump TDH 220 220
Pump efficiency @ design 68% 83%
Pump column pipe id 2" 6"
Pump discharge size 2" 6"
Pump check valve size 6"
Pump check valve rating, psi 200 200
Pump discharge isolation size 2" 5"
Pump discharge rating 200 200
Relief valve size 3"
Flow sensor psi rating 400 psi
SECTION 13122
SHADE STRUCTURES
PART 1 - GENERAL
1.01 SCOPE: This section of the specifications shall cover the construction and installation of shade
structures.
1.02 RELATED WORK SPECIFIED ELSEWHERE:
A. Section 03300 - Cast-in-Place Concrete.
B. Section 05500 - Miscellaneous Metal.
C. Section 09900 - Painting.
1.03 COMPLIANCE WITH STANDARDS: Comply with the following codes and standards except as
modified herein:
A. U.B.C., BOCA, and SBCCI.
1.04 SUBMITTALS: Submit to the Engineer four (4) copies of the shop drawings of the "Bounding Main"
structure.
PART 2 - PRODUCTS
2.01 MANUFACTURERS:
B. Available Manufacturers: Subject to compliance with requirements, manufacturers offering
products that may be incorporated into the work include, but are not limited to, the following:
1. Sun Ports International, Inc., Dot Hayman, 8510 Sovereign Row, Dallas, Texas
75247, (214) 905-9500.
2. Approved equal.
2.02 STRUCTURAL STEEL:
A. All structural steel shall be ASTM A 36, except steel pipe columns which shall be ASTM A
53, Grade B, unless otherwise noted. Slip fittings shall be manufactured of drawn-over-
mandrel steel with a minimum yield strength of 70 ksi and a minimum tensile strength of 80
ksi.
B. Structural steel shall be detailed, fabricated, and erected in accordance with AISC
specifications.
C. All shop and field welding shall be executed by certified welders in accordance with the latest
edition of the American Welding Society specifications.
D. Shop connections shall be welded unless noted otherwise. Field connections shall be as
indicated on the drawings.
E. All erection bolts shall be ASTM A 307, treated to retard corrosion.
SHADE STRUCTURES
13122 - 1
Addendum No. Two
F. All welds shall be performed using E70 electrodes. All fillet welds shall be 3/16" unless
otherwise noted.
G. All structural steel shall be primed and painted.
H. Wire rope as required shall be ¼" nominal diameter, 7 strand, 7 wires per strand (minimum),
with a minimum nominal tensile strength of 9,000 pounds. Wire rope shall be secured with
approved fittings and cable hardware.
I. All steel framing shall be constructed as shown on Sheet A-8.
2.03 ELECTRICAL: Electrical wiring, if required, shall conform to all applicable local codes, and shall be
installed by a licensed electrician.
2.04 SHADE FABRIC:
A. Shade fabric shall be a knitted high density polyethylene (HDPE), color concentrated and
ultra-violet light stabilized, monofilament and tape yarn, in a relationship of 57% and 43%
respectively.
1. Burst strength: 48 pounds per square foot.
2. Approximate shade: 80% (dark colors).
3. Nominal thickness: 0.045 - inch.
4. Fire retardancy: ASTM E84-91A; Class I (FSI 10) Flame spread; Smoke-developed
index (SDI) 30.
5. Conforms to: U.B.C., BOCA, and SBCCI.
6. All seams shall be sewn with waterproof, U.V. stabilized thread.
B. Contractor shall provide color samples for selection by the Owner or Owner's representative.
Provide a 5 year limited cloth warranty.
PART 3 - EXECUTION
3.01 INSTALLATION:
A. Install all steel members flush and true. Weld all members, grind smooth, prime and paint.
Paint to be selected by Owner or Owner's representative.
B. Install shade fabric as per manufacturer's recommendation.
C. Install masonry column at each steel post with a manufactured stone veneer.
END OF SECTION
SHADE STRUCTURES
13122 - 2
3987 Addendum No. Two
RE: SHEET A-2
Schdckel, l~oLILn. s a~d Associates, I~c.WAGON WHEEL PARK ~" '~ '~
~own by:
C~ltan~ ~ ~ Ar~t~ure · ~8~n8 · Rain8 COP~ RLW
~16l ~ote ~w wet · ~lte 2~ · ~gt~, Texoe 76~ ~ ~o~
(817) 649-3216. (~7) 6~8212 Memo. (817) 649-7645 Fox 9 7 Addendure No. 2
RE: SHEET A-2
SeEdeke], P,o]iins and Associates, Inc.WAGON WHEEL PARK .-12-99
· Drown by:
Consu/rants in landscape Architecture Engineering · Planning iCC)ppFI ! RLW me
1161 Corp<x~te Od~e West- Suite 200, Aatington. Texos 76006 ~ Job No~987 Addendure No. 2
(817) 649--3216 - (817) 640-8212 Metto * (817) 649-7645 Fox