SP-190715-TAH-Compiled-Specifications.pdf

The Aurora Highlands Section 129300 - 1 Site Furnishings

SP-190715-TAH-Compiled_Specifications.docx Norris Design Printed on 7/15/19

SECTION 129300

SITE FURNISHINGS

PART 1 - GENERAL

1.01 SUMMARY

Work covered by this specification concerns all labor, materials and equipment necessary for installation of site furnishings.

1.02 SUBMITTALS

A. Product Data B. Shop Drawings C. Samples D. Contract Closeout Submittals

1. Project Record Documents

2. Operation and Maintenance

E. Data Warranty

PART 2 - PRODUCTS

2.01 SITE FURNITURE AND ACCESSORIES

A. Site furnishing

1. Manufacturer

2. Model

3. Description

PART 3 - EXECUTION

All items shall be installed in accordance with the manufacturer’s recommendations and specifications. Contractor shall submit shop drawings as requested above. Contact the Owner’s Representative for field verification of all proposed site furnishing locations prior to placement.

END OF SECTION 129300

The Aurora Highlands Section 328400 - 2 Irrigation

SECTION 328400

IRRIGATION

PART 1 - GENERAL

1.01 SUMMARY

A. This section covers work necessary for installing the automatic underground irrigation system as indicated on the Construction Documents and details in accordance with the Contract Documents.

1.02 DESCRIPTION OF WORK

A. The work shall include, but is not limited to, all labor, material procurement, equipment, tools, transportation protection, and services required for complete installation of the automatic underground irrigation system as indicated or reasonably implied on the Construction Documents and/or specified herein.

B. Contractor shall retain a copy of the Construction Documents on the project site until final project acceptance.

C. If any discrepancies exist between the plans and the specifications, the specifications will prevail.

D. Work of this Section generally includes provisions for the installation of an automatic irrigation system which includes the following:

1. The Contractor shall comply with all local, state, and federal regulations regarding materials, methods of work, and disposal of excess and waste materials.

2. The Contractor shall provide notices required by governmental authorities, request required inspections, obtain required permits, and pay for all associated fees.

3. Static pressure verification and coordination of irrigation system installation with landscape material installation.

4. Trenching, stockpiling excavation materials, refilling and compacting trenches.

5. Coordination with other trades such as architecture, plumbing and electrical contractors.

6. Complete and fully operational irrigation system including but not limited to piping, valves, fittings, heads, emitters, controllers and wiring, and final adjustments to ensure complete coverage.

7. Water connections.

8. Electrical connections.

9. Replacement of unsatisfactory materials.

10. Clean-up, Consultant Reviews, and Project Acceptance.

11. Tests, including pressure testing.

1.03 RELATED SECTIONS

A. Section 329000 – Plantings B. Section 319119 – Fine Grading C. Section 328010 – Landscape Establishment and Maintenance

1.04 REFERENCES

A. Perform Work in accordance with requirements of the Special Provisions and as well as provisions of all applicable laws, codes, ordinances, rules, and regulations.

B. Conform to requirements of reference information listed below except where more stringent requirements are shown or specified in Contract Documents.

1. American Society for Testing and Materials (ASTM) - Specifications and Test Methods specifically referenced in this Section.

(a) ASTM D 2241 – Poly (Vinyl Chloride) (PVC) Plastic Pipe (SDR-PR)

The Aurora Highlands Section 328400 - 3

(b) ASTM D 2464 – Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings, Threaded, Schedule 40

(c) ASTM D 2564 – Solvent cements for Poly (Vinyl Chloride) (PVC) Plastic Pipe and Fittings

(d) ASTM D 2855 – Making Solvent – Cemented joints for Poly (Vinyl Chloride) (PVC) Plastic Pipe

Fittings

(e) AWWA –C-213, C550 Epoxy Coated Steel Fittings

2. Underwriters Laboratories (UL) - UL Wires and Cables.

1.05 QUALITY ASSURANCE

A. Contractor Qualifications - Installer shall have had considerable experience and demonstrate ability in the installation of irrigation systems of similar types in a neat, orderly, and responsible manner in accordance with recognized industry standards of workmanship. To demonstrate the ability and experience, as well as the financial stability, necessary for this Project, contractor qualifications will be submitted as required in Bidding Documents prior to the contract award. Request for Contractor qualifications shall include (but are not limited to) the following:

1. Contractor shall provide (3) three examples of similar project work completed within the past (6) six years. Description of projects shall include;

(a) Name of project.

(b) Location.

(c) Owner’s Representative or project contact.

(d) Brief description of work and project budget.

2. Current company financial statements.

B. Special Requirements

1. Work involving substantial plumbing for installation of copper piping, backflow preventer(s), and related work shall be executed by licensed and bonded plumber(s), performed in accordance with all prevailing codes and regulations. Secure a permit at least forty-eight (48) hours prior to start of installation.

2. Tolerances - Specified depths of mains and laterals and pitch of pipes are minimums. Settlement of trenches is cause for removal of finish grade treatment, refilling, compaction, and repair of finish grade treatment.

3. Coordination with other Contractors - The Contractor shall protect, maintain and coordinate the work contain in this section with the work of all subcontractors and other trades to avoid conflicts and ensure that construction is not interrupted or delayed.

4. Damage to other Improvements - Contractor shall replace or repair damage to grading, soil preparation, seeding, sodding, or planting done under other Sections during Work associated with installation of irrigation system at no additional cost to Owner’s Representative.

5. Work involving connection to, installation, or extension of 120-volt or greater electrical service shall be executed by a licensed and bonded electrician, performed in accordance with all prevailing codes and regulations (see Electrical Engineering Plans).

6. The Contractor shall be responsible for providing certification through (Municipality or Utility) for the backflow prevention unit as specified on the Construction Documents and herein.

C. Pre-Construction Conference - Contractor shall schedule and conduct a conference to review in detail quality control and construction requirements for equipment, materials, and systems used to perform the Work specified herein. The Pre-Construction Conference shall be scheduled not less than ten (10) days prior to commencement of Work. All parties required to be in attendance shall be notified no later than seven (7) days prior to the date of the conference. Contractor shall notify qualified representatives of each party concerned with that portion of Work to attend the conference, including but not limited to Consultants, Contractor's Superintendent, Owner’s Representative, and Installer.

D. Minutes of conference shall be recorded and distributed by Owner’s Representative to all parties in attendance within seven (7) calendar days of conference.

The Aurora Highlands Section 328400 - 4

E. Advanced Notices

1. The Contractor shall provide the Owner’s Representative with the following advanced notices:

(a) Notice of pre-construction conference seven (7) days in advance.

(b) Notice of product delivery observation schedules forty eight (48) hours in advance.

(c) Notice of pressure supply line installation forty eight (48) hours in advance.

(d) Notice of control wire installation inspection forty eight (48) hours in advance.

(e) Notice of lateral line and head layout inspection forty eight (48) hours in advance.

(f) Notice of turf sprinkler coverage inspection forty eight (48) hours in advance.

(g) Substantial Completion acceptance walk through and the start of the Maintenance Period one (1) week in advance.

(h) Final Acceptance Observation seven (7) days in advance.

(i) Notice of Warranty Period expirations, each phase one (1) week in advance.

(j) Notice of Final Completion and Owner assumes maintenance of project two (2) weeks in advance.

F. Vandalism

1. The Contractor will not be responsible for malicious destruction of any part of the automatic irrigation system after Final Acceptance of the project. The Contractor will, however, be responsible for replacement of vandalized materials stored but not yet installed, and material vandalized prior to Final Acceptance. All cases of vandalism shall be promptly reported to the Owner’s Representative. The Contractor shall inform the Owner’s Representative in writing if additional protection must be installed to protect the landscaping from damage after installation.

1.06 SUBMITTALS

A. Prepare and make submittals in accordance with conditions of the Contract and Construction Documents prior to installation.

B. Materials List - Submit two (2) copies of a complete materials list including manufacturer cut sheets indicating manufacturer, model number, and description of all materials and equipment to be installed.

Show appropriate dimensions and adequate detail to accurately portray intent of construction.

C. Record Drawings (As-Builts)

1. At onset of irrigation installation secure AutoCAD files of original irrigation design from Owner’s

Representative. At the end of every day, revise as-built prints for work accomplished that day in red ink. As-built field prints shall be brought up-to-date at the close of the working day every Friday by a qualified draftsperson. A print of record plan(s) shall be available at the Project Site. Indicate zone changes on weekly as-built drawings. Indicate non-pressure piping changes on as-builts. Upon completion of Project, submit for review, prior to Final Acceptance, final set of as-built mylars and an AutoCAD or Adobe Acrobat * format (also known as Portable Document Format or PDF), and submitted on a single-session, closed CD-ROM disc. Dimensions, from two permanent points of reference (building corners, sidewalk, road intersections or permanent structures), location of following items:

(a) Connection to existing water lines.

(b) Backflow preventers

(c) Routing of pressure lines (dimension maximum 100 feet along routing).

(d) Gate valves.

(e) Flow sensors and submeters

(f) Electric control valves

(g) Quick coupling valves.

(h) Drip line blowout stubs (end caps).

(i) Controller locations

(j) Control wire routing if not with pressure mainline.

(k) Control wire and communication cable splices.

The Aurora Highlands Section 328400 - 5

(l) Locations of all sleeving including size, quantity and depth of sleeve.

(m) Locations of wall or floor penetrations on patio levels.

(n) Other related equipment as directed by Consultant.

D. Prior to scheduling final walk through for Substantial Completion, the Contractor shall submit all As-Built information to the Owner’s Representative for approval.

E. Owner’s Representative will not certify any pay request submitted by the Contractor if the record As-Built drawings and controller data charts are not current, and processing of pay request will not occur until record As-Built drawings and controller data charts are up-dated.

F. If record As-Built drawings and controller data charts are not provided to the Owner’s Representative within the specified time frame, the Owner’s Representative shall collect the data for programming purposes, and charge the Contractor for time and materials.

G. Submit three (3) written operating instructions in a three ring binder including all cut sheets of products, coordinate controller/watering operation instruction with Owner’s Representative maintenance personnel and contact information of the contractor including name, address, phone number and contact person.

H. Controller Charts

1. Do not prepare controller charts until Owner’s Representative has reviewed record as-built drawings.

2. Contractor shall provide both a hard copy and an electronic version of the controller chart for each automatic controller installed.

(a) Chart may be reproduction of record drawing, if scale permits fitting of controller door. If photo reduction prints are required, keep reduction to maximum size possible to retain full legibility.

(b) Chart shall be a bond or blueline print of the actual "as-built" system, showing the area covered by that controller.

(i) Identify area of coverage of each remote control valve, using a distinctly different pastel color drawing over entire area of coverage.

(ii) Following review of charts by the Owner’s Representative, the charts shall be hermetically sealed between two layers of 20-mm thick plastic sheet.

(iii) Charts shall be completed and reviewed prior to Final Completion walk-through of the irrigation system.

(iv) Attach Owner’s-Representative-approved controller chart to inside of each controller door using self adhesive Velcro strips.

I. Prior to Final Walk-through for each area of the Project, the Contractor shall confirm that the following has been accomplished;

(a) Construction record as-built drawings per section 1.05

(b) Controller charts

(c) Operation manuals

1.07 DELIVERY, STORAGE, AND HANDLING

A. Deliver, unload, store, and handle materials, packaging, bundling, and products in dry, weatherproof, condition in a manner to prevent damage, breakage, deterioration, intrusion, ignition, and vandalism.

Deliver in original unopened packaging containers prominently displaying manufacturer's name, volume, quantity, contents, instructions, and conformance to local, state, and federal law. Remove and replace cracked, broken, or contaminated items or elements prematurely exposed to moisture, inclement weather, sun, snow, ice, temperature extremes, fire, or jobsite damage.

B. Exercise care in handling, loading and storing, of PVC pipe. All PVC pipe shall be transported in a vehicle which allows length of pipe to lie flat so as not to subject it to undue bending or concentrated external loads.

All sections of pipe that have been dented or damaged shall be discarded, and if installed, shall be replaced with new piping.

The Aurora Highlands Section 328400 - 6

1.08 JOBSITE CONDITIONS

A. Protection of Property

1. Preserve and protect all trees, plants, monuments, structures, and paved areas from damage due to Work under this Section. In the event damage does occur, all damaged items shall be completely repaired or replaced to satisfaction of Owner’s Representative, and all injury to living plants shall be repaired by Contractor. All costs of said repairs shall be charged to and paid for by Contractor.

2. Protect buildings, walks, walls, and other property from damage. Flare and barricade open ditches.

Damage caused to asphalt, concrete, or other building material surfaces shall be repaired or replaced at no additional cost to the Owner. All disturbed areas shall be restored to their original condition.

B. Existing Trees

1. All Work shall be performed outside of the drip zone (canopy) of all existing plant material.

2. Where it is necessary to excavate adjacent to existing trees use all possible care to avoid injury to trees and tree roots. Excavation, in areas where 2 inch and larger roots occur, shall be done by hand.

Roots 2 inches or larger in diameter, except directly in the path of pipe of conduit, shall be tunneled under and shall be heavily wrapped with burlap to prevent scarring or excessive drying. Where a trenching machine is operated close to trees having roots smaller than 2 inches in diameter, wall of trench adjacent to tree shall be hand trimmed, making clean cuts through roots. Trenches adjacent to trees shall be closed within twenty four (24) hours, and when this is not possible, side of trench adjacent to tree shall be kept shaded with moistened burlap or canvas.

C. Protection and Repair of Underground Lines

1. The Contractor shall contact Utility location services two (2) full working days prior to commencing any construction activity on the Project (Saturday and Sunday are not considered working days). Any damage to the utilities shall be repaired at the Contractor’s expense. Painting the location of utilities on asphalt or concrete pavement is prohibited. When Blue Stake ticket is ordered, stake chasers or stake flagging must be requested.

2. In addition to requesting a Utility location services the Contractor shall request proper utility company to stake exact location (including depth) of all underground electric, gas, or telephone lines. Painting the location of utilities on asphalt or concrete pavement is prohibited. When the proper utility company is contacted stake chasers or stake flagging must be requested to mark the locations of their utilities.

3. Take whatever precautions are necessary to protect these underground lines from damage. If damage does occur, Utility Owner shall repair all damage. Contractor shall pay all costs of such repairs unless other arrangements have been made.

4. If a utility is damaged and it was not properly marked by the utility company, the utility company is responsible for any damages by the Contractor. The Contractor is responsible to provide adequate evidence that the utility was not marked and negotiate with the utility provider to repair the damage.

5. The Contractor, in writing, to locate all private utilities (i.e., electrical service to outside lighting) before proceeding with excavation. If, after such request and necessary staking, private utilities that were not staked are encountered and damaged by Installer, Owner shall repair them at no cost to Installer. If Contractor damages staked or located utilities, they shall be repaired by Utility Owner at Contractor's expense unless other arrangements have been made.

D. Where trenches and lines cross existing roadways, paths, curbing, etc., damage to these shall be kept to a minimum and shall be restored to original condition.

1.09 WARRANTY

A. Manufacturer shall guarantee all materials against defects for a period of one year from date of Final

Acceptance.

B. Contractor shall guarantee that all work is compliant with the Construction Documents and Specifications and is free from defects in materials and workmanship for a period of one (1) year after the date of Final

The Aurora Highlands Section 328400 - 7

Acceptance. Ordinary wear and tear is expected. Contractor shall be responsible for coordinating material warranty items with the manufacturer/distributor.

C. Settling of backfilled trenches that may occur during warranty period, including complete restoration of damaged property, shall be repaired/completed at no expense to the Owner.

D. Expenses due to vandalism before substantial completion shall be borne by Contractor.

E. Contractor shall make such repairs or replacements within a reasonable time after receipt of notice from the

Owner’s Representative. Contractor shall authorize the Owner’s Representative to proceed to have said repairs or replacements made at Contractor’s expense and we will pay the costs and charges therefore upon demand if repairs or replacements are not completed by the Contractor within a reasonable time frame.

F. Owner’s Representative maintenance company will maintain turf and planting areas during Warranty Period, so as not to hamper proper operation of irrigation system.

1.10 MAINTENANCE

A. Furnish the following maintenance items to Owner’s Representative prior to Final Acceptance:

1. Two (2) sets of special tools required for removing, disassembling, and adjusting each type of sprinkler head and valve supplied on this Project.

2. Two (2) six (6) foot valve keys for operation of gate valves.

3. Two (2) six (6) foot valve keys for operation of stop and waste valves.

4. Two (2) four (4) foot valve keys for operation of drain valves.

5. Two (2) keys for each automatic controller.

6. Two (2) quick coupler keys and two matching hose swivels for each type of quick coupling valve installed.

1.11 EXTRA STOCK

A. In addition to installed system components, furnish the following items to the Owner’s Representative:

1. Four (4) per 100 installed drip emitters of each type used.

2. Four (4) gear driven rotors for each type used.

3. Ten (10) rotary spray bodies for each type used.

4. Ten (10) fixed spray bodies for each type used.

PART 2 - PRODUCTS

2.01 MATERIALS

A. General Piping

1. Pressure Supply Line (from point of connection through backflow prevention unit) - Type K Copper.

2. Pressure Supply Lines (downstream of backflow prevention units) - Class 200 PVC BE (1" - 2 ½")

3. Pressure Supply Lines (downstream of backflow prevention units) - Class 200 PVC RT (3" and larger)

4. Non-pressure lines - Class 200 PVC BE

5. PVC Sleeving - Class 200 PVC.

6. Drip Tubing – Rain Bird XBS940G500 3/4" with .050 inch wall thickness.

7. Emitter Tubing – Rain Bird XQ 1/4” Distribution Tubing.

8. Dripline Tubing – Rain Bird XFS-CV-09-18

B. Copper Pipe and Fittings:

1. Copper Pipe - Type K, hard tempered.

2. Fittings - Wrought copper, solder joint type.

3. Joints - Soldered with solder, 45% silver, 15% copper, 16% zinc, and 24% cadmium and solidus at

1125~F and liquids at 1145~F.

The Aurora Highlands Section 328400 - 8

C. Brass Pipe and Fittings:

1. Brass Pipe - 85% red brass, ANSI Schedule 40 screwed pipe.

2. Fittings - Medium brass, screwed 125 pound class.

D. Ductile Iron Pipe and Fittings

1. Ductile Iron Pipe – Centrifugal cast ductile iron in metal molds for water pipe in accordance with ANSI

C151 and AWWA A21.51 with asphaltic exterior coating and interior lining and coating in accordance with ANSI C151 and AWWA A21.

2. Fittings – Mechanical joint as supplied by the pipe manufacturer and rated for working pressures of 350 psi.

3. Gaskets – Furnish in accordance with ANSI C111 and AWWA A21.11.

E. Plastic Pipe and Fittings

1. Identification Markings (Identify all pipe with following indelible markings):

(a) Manufacturer's name.

(b) Nominal pipe size.

(c) Schedule of class.

(d) Pressure rating.

(e) NSF (National Sanitation Foundation) seal of approval.

(f) Date of extrusion.

2. Solvent Weld Pipe - Manufactured from virgin polyvinyl chloride (PVC) compound in accordance with ASTM D2241 and ASTM D1784; cell classification 12454-B, Type 1, Grade 1.

3. Fittings - Standard Wright, Schedule 40, injection molded PVC; complying with ASTM D1784 and D2466, cell classification 12454-B.

4. Threads - Injection molded type (where required).

5. Tees and ells - Side gated.

6. Threaded Nipples - ASTM D2464, Schedule 80 with molded threads.

7. Teflon Tape – All PVC male threaded fittings and nipples, excluding marlex fittings, shall receive wrapping of Teflon tape applied to threaded surfaces per pipe manufacturer’s recommendations.

8. PVC Solvent Cement and Primer - Solvent cement and primer for joining PVC pipe and fittings shall be as approved by the pipe and fitting manufacturers and shall comply with ASTM Standards D-2564 and F-656.

(a) Primer shall be manufactured for use on all Classes and Schedules of rigid PVC pipe and fittings, including Schedule 80. Color shall be purple.

(b) Solvent weld cement shall be manufactured for use on all Classes and Schedules of rigid PVC pipe and fittings, including Schedule 80. It shall have a medium fast set-up time. Color shall be grey. Fast-set or “hot-glue” solvent weld cement shall not be utilized without written approval by the Owner’s Representative’s Representative.

9. Gasketed End Pipe - Manufactured from virgin Polyvinyl Chloride compound in accordance with ASTM D2241 and ASTM D1784; cell classification 1254-B, Type 1, Grade 1.

(a) Fittings and Services Tees (3" and larger) - Ductile iron, grade 70-55-05 in accordance with ASTM

A-536. Fittings shall have deep bell push-on joints with gaskets meeting ASTM F-477.

(b) Gaskets - Factory installed in pipe and fittings, having a metal or plastic support within gasket or a plastic retainer ring for gasket.

(c) Lubricant - As recommended by manufacturer of pipe fittings.

10. Pipe (flexible plastic type) - Manufactured from virgin polyethylene in accordance with ASTM D2239, with a hydrostatic design stress of 620 psi and designed as PE2306.

11. Fitting: Manufactured in accordance with ASTM D2609, PVC type I, cell classification 12454-B.

12. Pressure Supply Piping Locating Tape for Potable Systems:

(a) Be traceable with wire detection

(b) Markline Tape, 3" wide detectable tape, blue in color with the words "CAUTION: WATERLINE

BELOW" printed every 36 inches. Place per trenching detail.

The Aurora Highlands Section 328400 - 9

F. Master Valve

1. 2-way, solenoid pilot operated type made of brass; diaphragm-activated and slow closing. Include freely pivoted seat seal; retained (mounted) without attachment to diaphragm.

(a) Rain Bird EFB-CP (2” and smaller)

(b) Rain Bird 300-BPES (3” and larger)

G. Flow Sensor

1. PVC type and size shown on Construction Documents.

(a) Rain Bird FS-xxx-P Series; refer to Construction Documents for size.

H. Control Valves

1. Globe style, normally closed, spring-loaded, nylon reinforced rubber diaphragm, glass filled UV resistant nylon body, and 24 VAC encapsulated solenoid.

2. Provide self-cleaning stainless steel port screen and bleeder valve with internal bleed for field operation to permit operation in the field without power at the controller.

(a) Rain Bird PESB series valves.

A. Drip Irrigation Systems

1. Drip Control Valve Assemblies:

(a) Drip Valve Assembly – Rain Bird XCZ-100-PRB-COM.

(b) Ball valve – PVC SCH 80, IPS threads.

2. Piping:

(a) Rain Bird XBS Black Stripe Tubing w/ Green Stripe for Point Source Drip applications

(b) Rain Bird XFS-CV-09-18 for Dripline applications

3. Fittings:

(a) Point Source Drip – Plastic Insert fittings for Polyethylene (PE) Plastic Pipe

(b) Dripline – Rain Bird XF Series Dripline Insert Fittings.

I. Emitters

1. Single port, pressure compensating type, Rain Bird XB-05XB, XB-10XB, XB-20XB; quantity as indicated in the drawings, with a flow variation of less than 10 percent.

2. Furnish each outlet with a Rain Bird TS-025 Tubing Stake and DBC-025 Diffuser Bug Cap.

J. Ball Vales

1. Schedule 80 PVC construction, IPS threads.

K. Gate Valves

1. Gate Valves for 1 inch through 2-1/2 Inch Pipe - Brass construction; solid wedge, IPS threads, and non-rising stem with cross nut operating handle.

2. Gate Valves for 3 Inch and Larger Pipe – Iron body, brass or bronze mounted AWWA gate valves with a clear waterway equal to full nominal diameter of valve; rubber gasket or mechanical joint-type only.

Valves shall be able to withstand a continuous working pressure of 200 psi and be equipped with a square operating nut and resilient wedge. Provide pipe restraints on gate valves three (3) inches and larger as detailed.

L. Quick Coupling Valves

1. Brass two-piece body designed for working pressure of 150 PSI.

2. Equip quick coupler with locking rubber cover.

3. Rain Bird 44-LRC

M. Valve Boxes

1. Color shall be green for all Valve Boxes.

2. Gate Valves, Quick Coupling Valves, and Wire Splice or Stub Box – Rain Bird VB10RNDH, box as detailed on Construction Documents.

The Aurora Highlands Section 328400 - 10

3. 1 inch through 2 inch Control Valves, Master Valves, Pressure Regulating Valves and Communication Cable Splice box – Rain Bird VBSTDH, with VB-LOCK-H locking system as detailed.

4. Drip Valve Assemblies and Flow Sensors - Rain Bird VBSTDH, with VB-LOCK-H locking system as detailed.

5. 3 inch Control Valves - Rain Bird VBJMBH, with VB-LOCK-H locking system as detailed.

N. Electrical Control Wiring

1. Low Voltage – Two Wire

a. Decoder Cable - AWG UFUL approved No. 14, 2 – conductor, double jacketed direct burial copper wire or larger, if required to operate system as designed. Paige P7072D or approved equal.

b. Control Wire connections and splices shall be made with 3M DBR-6 direct bury splice or approved equal.

1. Communication Cable

(a) Paige PE-89 or approved equal

(b) 3M Gel-type connections installed within Preformed Super Serviseal Splice Kit or approved similar dry splice method.

2. High Voltage

(a) Type required by local codes and ordinances, of proper size to accommodate needs of equipment serviced (see Electrical Engineering Plans).

O. Backflow Preventer

1. Reduced pressure type shall be equipped with ball valves, field test cocks, and drain valves. Device must be USC approved.

2. Backflow preventers shall be of the reduced pressure principle type with bronze body and stainless steel springs.

3. The device shall be equipped with ball valves and unions on the upstream and downstream ends.

4. The device shall be protected from elements with a frost blanket as per the Construction Documents.

5. The backflow preventer manufacturer, model and size as per the Construction Documents.

P. Automatic Controller

1. Exterior mounted in metal enclosure box.

2. Provide controller with two stage primary and secondary surge protection, non-volatile memory, self-diagnostic electronic circuit breaker, locking hinged cover, remote ready port, back up battery, rust resistant weather tight steel cabinet, quick disconnect cables, master valve circuit, two sensor connections, and capable of operating the number of control valves indicated on the drawings.

3. Provide two wire controller compatible with decoders and associated programming.

4. Provide all grounding and surge protection per manufacturer specifications.

5. Rain Bird ESP-LXD

Q. Two-wire Decoders

1. Valve Decoders

(a) Rain Bird FD-101TURF

2. Sensor Decoders

(a) Rain Bird SD-210TURF

3. Line Surge Protection

(a) Rain Bird LSP-1

PART 3 - EXECUTION

3.01 SITE CONDITIONS, LANDSCAPE PLAN REVIEW AND COORDINATION

A. Contractor shall be held responsible for coordination between landscape, plumbing, architecture and irrigation system installation. Landscape material locations shown on the Landscape Plan shall take

The Aurora Highlands Section 328400 - 11 precedence over the irrigation system equipment locations. If irrigation equipment is installed in conflict with the landscape material locations shown on the Landscape Plan, the Contractor shall be required to relocate the irrigation equipment, as necessary, at Contractor’s expense.

B. Contractor is responsible to notify Owner’s Representative of any field conditions that vary from the conditions shown on the Irrigation Construction Documents. If the Contractor fails to notify the Owner’s Representative of these conditions, the Contractor shall be held responsible for all costs associated with system adjustments required due to the change in field conditions.

3.02 STATIC PRESSURE VERIFICATION

A. Contractor shall field verify the static pressure at the project site, prior to commencing work or ordering irrigation materials, and submit findings, in writing, to the Owner’s Representative. If Contractor fails to verify static water pressure prior to commencing work or ordering irrigation materials, Contractor shall assume responsibility for all costs required to make system operational and the costs required to replace any damaged landscape material. Damage shall include all required material costs, design costs and plant replacement costs.

3.03 INSPECTION

A. Examine areas and conditions under which Work of this Section is to be performed. Do not proceed with

Work until unsatisfactory conditions have been corrected.

B. Grading operations, with the exception of final grading, shall be completed and approved by Owner’s

Representative before staking or installation of any irrigation system begins.

C. Underground Utilities shall be installed prior to installation of irrigation system. If irrigation installation takes place prior to utility installation, Contractor shall notify Owner’s Representative of this condition in writing prior to commencement of irrigation installation.

3.04 PREPARATION

A. Layout and coordinate installation of irrigation lines within building walls, floor systems, under slab structures with architecture, plumbing and owner’s representative prior to installation. Contact Owner’s Representative forty eight (48) hours in advance and request review of installation of interior installation of all irrigation lines.

B. Staking shall occur as follows:

1. Mark, with lath stakes, routing of pressure supply line for first few zones. Contact Owner’s

Representative forty eight (48) hours in advance and request review of staking. Proposed locations of all trees shall be field staked by Contractor and approved by Owner’s Representative prior to Owner’s Representative review of irrigation staking. Owner’s Representative will review staking and direct changes if required.

2. Contractor shall contact Owner’s Representative if field spacing varies by +/- 10% of the spacing shown on the irrigation plans. If Contractor fails to notify Owner’s Representative of variances exceeding 10%, Contractor assumes full responsibility for the costs associated with any required system modifications deemed necessary by the Owner’s Representative.

3. If project has significant topography, freeform planting beds, or other amenities, which could require alteration of irrigation equipment layout as deemed necessary by Owner’s Representative, do not install irrigation equipment in these areas until Owner’s Representative has reviewed equipment staking.

C. Install sleeving under asphalt paving and concrete walks, prior to concreting and paving operations, to accommodate piping and wiring. Sleeving shall be sized per plans and shall be a minimum of two (2) sizes larger than the pipe it is containing. Compact backfill around sleeves to 95% Modified Proctor Density within 2% of optimum moisture content in accordance with ASTM D1557.

The Aurora Highlands Section 328400 - 12

D. Trench excavation shall follow, as much as possible, layout shown on Construction Documents. Dig trenches straight and support pipe continuously on bottom of trench. Trench bottom shall be clean and smooth with all rock and organic debris removed. Pressure supply line trenches shall be uniform as required to meet minimum depth requirements for the type of pipe being installed.

1. Clearances

(a) Piping smaller than three (3) Inches - Minimum clearance of piping three (3) inches or smaller shall be three (3) inches horizontally on both sides of the trench.

(b) Line Clearance - Provide not less than four (4) inches of clearance between each line and not less than twelve (12) inches of clearance between lines of other trades.

2. Pipe and Wire Depth

(a) Pressure Supply Piping – twenty-four (24) inches from top of pipe.

(b) PVC Sleeving – Match depth of (deepest) sleeved material (under drives and walks).

(c) Non-pressure Piping (rotor) – eighteen (18) inches from top of pipe.

(d) Non-pressure Piping (rotary and fixed spray) – twelve (12) inches from top of pipe.

(e) Control Wiring/Communication Cable - Side of pressure main or at eighteen (18) inch depth if installed in a separate trench with no mainline piping.

(f) Emitter Tubing (Micro-tubing) – eight (8) inches from top of pipe (non slope plantings), four (4) inches from top of pipe on slopes 2:1 or greater.

3. Boring shall be permitted only where pipe must pass under obstruction(s) which cannot be removed. In backfilling bore, final density of backfill shall match that of surrounding soil. It is acceptable to use sleeves of suitable diameter installed first by jacking or boring, and pipe laid through sleeves. Observe same precautions as though pipe were installed in open trench.

3.05 INSTALLATION

A. Locate equipment as near as possible to locations designated on Construction Documents. Contractor shall notify Owner’s Representative of any deviations for approval prior to installation.

B. Coordinate installation of piping within walls, flooring systems, under slab structures with architecture, plumbing and owner’s representative prior to installation. The irrigation contractor shall locate wall penetrations, connection boxes, stub and drain locations for plumbing contractor and architecture.

C. PVC Piping

1. Snake pipe in trench as much as possible to allow for expansion and contraction.

2. Do not install pipe when air temperature is below 40°F.

3. When pipe installation is not in progress, or at end of each day, close pipe ends with tight plug or cap.

(Perform work in accordance with good practices prevailing in piping trades).

4. Coordinate pressure supply line installation with required bedding operations.

5. Stake all above-grade PVC piping per details.

6. Use 45° ells when making perpendicular crossings of above-grade PVC piping, to depress bottom pipe.

7. Solvent Weld PVC Pipe - Lay pipe and make all plastic to plastic joints in accordance with manufacturer's recommendations.

8. Gasketed End Pipes

(a) Lay pipe and make pipe to fitting or pipe to pipe joint, following OR70 recommendations (Johns- Manville Guide for Installation of Ring-Tite Pipe), or pipe manufacturer's recommendations.

(b) Construct concrete thrust blocks for all pipe three (3) inches in diameter or greater behind all gasketed fittings, tees, bends, reducers, line valves, and caps in accordance with pipe manufacturer's recommendations. In sandy soil, mechanical joint filling shall be utilized for all rubber-ring joint fittings per industry standards. Contact Consultant prior to placing thrust blocks, for observation of thrust block excavation and initial placement. Thrust block bearing surface shall be calculated based on tables below. All bearing surfaces shall be undisturbed soil:

The Aurora Highlands Section 328400 - 13

D. Lateral Line and Turf Irrigation Installation Inspection

1. The Contractor shall schedule and conduct a lateral line and turf irrigation installation inspection conference to review in detail quality control and construction methods for the installation of the lateral lines for the turf irrigation system. The Contractor shall provide forty eight (48) notice to the Owner’s Representative and all other respective parties involved in the lateral line and turf irrigation installation inspection to request their presence at the conference.

E. Thrust Block Sizing Guide

1. Thrust developed per 100 PSI pressure (lbs. force) for various fitting configurations.

Pipe Fitting Fitting Valves, Tees Size 90° Elbow 45° Elbow Dead Ends 3 1,000 600 800 4 1,800 1,100 1,300 6 4,000 2,300 2,900 8 7,200 4,100 5,100 10 11,200 6,300 7,900 12 16,000 9,100 11,300

Approximate bearing strength of typical soils.

Soil Type lbs/ft 2

Mulch, Peat, etc. 0 Soft Clay 500 Sand 1,000 Sand And Gravel 1,500 Sand And Gravel With Clay 2,000 Sand And Gravel Cemented With Clay 4,000 Hard Pan 5,000

Example Calculation: 6 inch 90 degree elbow in sand and gravel soil

Bearing Surface Area (square feet) = 4,000 lbs /1,500 lbs/ ft = 2.67 square feet bearing surface area on undisturbed soil

F. Control Wiring

1. Low Voltage Wiring

(a) Bury control wiring between controller and electric valves in pressure supply line trenches, strung as close as possible to main pipe lines with such wires to be consistently located below and to one side of pipe, or in separate trenches.

(b) Provide an expansion loop at every pressure pipe angle fitting, every electric control valve location (in valve box), and every five hundred (500) feet. Form expansion loop by wrapping wire at least 8 times around a 3/4 inch pipe and withdrawing pipe.

(c) Make all splices and connections using 3M DBR-6 connectors or similar dry splice method.

(d) Install all control wire splices not occurring at control valve in a separate splice valve box.

(e) Install one decoder for each control valve.

2. High Voltage Wiring for Automatic Controller

(a) Provide 120 volt power connection to automatic controller.

The Aurora Highlands Section 328400 - 14

(b) All electric work shall conform to local codes, ordinances, and authorities having jurisdiction. All high voltage electrical work shall be performed by licensed electrician. See Electrical Engineering Plan.

G. Automatic Controller

1. The automatic controller manufacturer model as per Construction Documents.

2. The Contractor shall coordinate automatic controller power source with electrical plans.

3. Controller electrical source shall have a dedicated location on the nearest service panel.

4. Controller electrical connection shall be hard wire in an approved junction box – no plug in outlet accepted.

5. Install controller in accordance with manufacturer's instructions as detailed and where shown on

Construction Documents.

6. Owner’s Representative shall approve final location of controller prior to installation.

7. Connect electric control valves to controller in numerical sequence as shown on Construction

Documents.

8. Each controller shall be a dedicated separate ground wire and grounding rod as detailed or per manufacturer’s recommendations. The Owner’s Representative may waive the need for a grounding rod if other sufficient grounding to the controller is provided and is an acceptable method of grounding as approved by the manufacturer.

9. All above ground conduit shall be rigid galvanized with appropriate fittings. All below ground conduit shall be schedule 40 PVC.

H. Electric Control Valves

1. Install cross-handle three (3) inches below finished grade where shown on Construction Documents as detailed.

2. When grouped together in a manifold, allow at least twelve (12) inches between valve box sides and space control valves accordingly. Install individual valve box flush with grade.

3. When parallel to roadway, sidewalk or other permanent element or structure, control valve and box are to be installed perpendicular to element or structure, spaced equally.

I. Quick Coupler Valve

1. Install quick couplers on double swing-joint assemblies of schedule 80 PVC piping as indicated on irrigation construction details; plumb and flush to grade. Angled nipple relative to pressure supply line shall be no more than 45 ° and no less than 10 °.

J. Drip Emitters

1. Stake all single port surface emitters as detailed on Construction Documents and stake with acceptable tubing.

K. Valve Boxes

1. All valve boxes shall meet all applicable codes and ordinances.

2. Install one valve box for each type of valve installed as detailed. Valve box extensions are not acceptable except for master valves, flow sensors and gate valves (3” and larger).

3. Install gravel sump after compaction of all trenches. Place final portion of gravel inside valve box after valve box is backfilled and compacted.

4. Install “Christy” stainless steel or 2.5” x 5” plastic valve label tags for each valve box (1-800-258-4583).

Entire controller & station number shall be printed on each tag. Letter and number size shall be no smaller than 1/8 inch and no greater than 1/4 inches. Label each valve box as follows:

(a) Electric Control valves – Controller letter and station number.

(b) Quick Coupler Valves – Label “QC.”

(c) Wire Splices – Label “WS.”

(d) Drip Piping Blow-out Stubs – Label with Controller letter and station number of each drip piping blow-out.

The Aurora Highlands Section 328400 - 15

(e) Gate Valves – Label “GV.”

(f) Drain Valves – Label “DV”

(g) Flow Sensors – Label “FS.”

L. Gate Valves

1. Install where shown on Construction Documents as detailed.

M. Drain Valves

1. Install where shown on Construction Documents as detailed.

N. Backflow Preventer

1. Shall be interior mounted in water entry room

2. All piping shall be Type K copper

3. Access for test points and shutoffs shall be maintained.

4. The Contractor shall be responsible for providing certification for the backflow prevention unit as specified on the Construction Documents and herein.

O. Control Wiring

1. All Control wiring to be laid to bottom and side of pressure supply line trench.

2. Separate wire trenches will not be allowed unless approved by Owner’s Representative prior to installation.

3. Interior control wiring to be installed in PVC conduit.

P. Supply Line Pressure Testing

1. Conduct tests in presence of Owner’s Representative. Arrange for presence of Owner’s

Representative forty-eight (48) hours in advance of testing.

2. Supply force pump and all other test equipment as necessary to properly test the system.

3. Prior to backfilling and installation of all control valves, fill pressure supply line with water, and pressurize to 40 PSI over the designated static pressure or 120 PSI, whichever is greater, for a period of two (2) hours.

4. Test is acceptable if no loss of pressure is evident during the test period.

5. Detect and repair leaks as necessary.

6. Retest system until test pressure can be maintained for duration of test time.

7. Before Final Acceptance, pressure supply line shall remain under pressure for a period of forty-eight

(48) hours.

Q. Backfilling

1. Do not begin backfilling operations until required system tests have been completed and approved by Owner’s Representative.

2. Backfill shall not be done in freezing weather except with prior written approval by Owner’s Representative. Leave trenches slightly mounded to allow for settlement after backfilling is completed.

3. Trenches shall be finish graded prior to final walk-through of system by Owner’s Representative.

4. All pressure supply lines shall be bedded with construction grade sand three (3) inches below invert of pipe, to three (3) inches above top of pipe and width of trench when site conditions are rocky or otherwise unfavorable.

5. Excavated material is generally considered satisfactory for backfill purposes. Backfill material shall be free of rubbish, vegetable matter, frozen materials, and stones larger than one (1) inch in maximum dimension. Do not mix subsoil with topsoil. Material not suitable for backfill shall be disposed of off-site in a legal manner or wasted on-site at the direction and approval of the Owner’s Representative.

Contractor shall be responsible for providing suitable backfill if excavated material is unacceptable or not sufficient to meet backfill, compaction, and final grade requirements

6. Do not leave trenches open for a period of more than 48 hours. Open excavations shall be protected in accordance with OSHA regulations.

7. Compact backfill to 90% maximum density, determined in accordance with ASTM D155-7 utilizing the

The Aurora Highlands Section 328400 - 16 following methods:

(a) Mechanical tamping.

(b) Puddling or ponding. Puddling or ponding and/or jetting are prohibited within twenty feet (20’-0") of building or foundation walls.

R. Piping Under Paving

1. Provide sleeving as required

2. Piping located under areas where asphalt or concrete paving will be installed shall be bedded with construction grade sand (a layer three (3) inches below pipe and three (3) inches above pipe).

3. Piping shall have a minimum clearance of six (6) inches from each other, and from lines of other trades. Parallel lines shall not be installed directly over one another.

4. Compact backfill material in six (6) inch lifts at 90% maximum density determined in accordance with

ASTM D155-7 using manual or mechanical tamping devices.

5. Set in place, cap, and pressure test all piping under paving, in presence of the Owner’s Representative prior to backfilling and paving operations.

6. Piping under existing walks and asphalt or concrete pavement shall be done by jacking, boring, or hydraulic driving, but where cutting or breaking of walks and/or concrete is necessary, it shall be done and replaced at no cost to Owner’s Representative. Obtain permission to cut or break walks and/or asphalt or concrete paving from Owner’s Representative when saw-cutting or sleeving under any public roadways or streets.

3.06 FIELD QUALITY CONTROL

A. Flushing

1. After piping, risers, and valves are in place and connected, but prior to installation of quick coupler assemblies, and control valves, thoroughly flush piping system under full head of water pressure from dead end fittings.

2. Maintain flushing for five (5) minutes through furthermost valves.

3. Cap risers after flushing.

B. Substantial Completion Walk-Through

1. Arrange for Owner’s Representative’s presence forty-eight (48) hours in advance of walk-through.

2. Entire system shall be completely installed and operational prior to scheduling of walk-through.

3. Operate each zone in its entirety for Owner’s Representative at time of walk-through and additionally, open all valve boxes.

4. Consultant shall generate a punch list of items to be corrected prior to Final Completion.

5. Furnish all materials and perform all work required to correct all inadequacies of coverage due to deviations from Contract Documents, and as directed by Owner’s Representative.

6. During walk-through, expose all drip emitters under operations for observation by Owner’s

Representative to demonstrate that they are performing and installed as designed, prior to placing of all decorative rock. Schedule separate walk-through if necessary.

7. Supply Owner’s Representative with prints of irrigation as-builts prior to scheduling Substantial Completion Walk-through.

C. Final Acceptance Walk-Through

1. Arrange for Owner’s Representative presence seven (7) days in advance of walk-through.

2. Show evidence that Owner’s Representative has received all accessories, charts, record drawings, equipment, operational manuals and warranties as required before Final Completion Walk-through is scheduled.

3. Operate each zone, in its entirety for Owner’s Representative at time of walk-through to ensure correction of all incomplete items.

4. Items deemed not acceptable by Owner’s Representative shall be resolved to the complete satisfaction of Owner’s Representative.

The Aurora Highlands Section 328400 - 17

5. If, after request to Owner’s Representative for the Final Completion Walk-through of the irrigation system, the Owner’s Representative finds items during the walk-through which have not been properly adjusted, reworked, or replaced as indicated on list of incomplete items from previous walk-through, Contractor shall be charged for all subsequent walk-throughs. Funds will be withheld from Final Payment and/or retainage to Owner’s Representative, in amount equal to additional time and expenses required by Owner’s Representative to conduct and document further walk-throughs as deemed necessary to ensure compliance with Contract Documents.

3.07 ADJUSTING

A. Upon completion of installation,…