SOW- Irrigation REV.pdf

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08-01-16

32 84 00 - 1

SECTION 32 84 00

PLANTING IRRIGATION

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Automatically-controlled lawn trees shrub irrigation system, controllers and all other appurtenances.

1.2 RELATED REQUIREMENTS

A. Concrete Work, Reinforcing, Placement and Finishing: Section 03 30 00, CAST-IN-PLACE CONCRETE.

B. Excavation, Trench Widths, Pipe Bedding, Backfill, Shoring, Sheeting, Bracing: Section 31 20 00, EARTH MOVING.

1.3 ABBREVIATIONS

A. HDPE: High-density polyethylene plastic.

B. NPT: National pipe thread.

C. PTFE: Polytetrafluoroethylene.

D. PVC: Polyvinyl chloride plastic.

1.4 DEFINITIONS

A. Circuit Piping: Downstream from control valves to sprinklers, specialties, and drain valves.

B. Drain Piping: Downstream from circuit-piping drain valves.

C. Main Piping: Downstream from point of connection to water distribution piping to, and including, control valves.

D. Low Voltage: As defined in NFPA 70 for circuits and equipment operating at less than 50 Volts or for remote-control, signaling power-limited circuits.

1.5 APPLICABLE PUBLICATIONS

A. Comply with references to extent specified in this section.

B. American Society of Mechanical Engineers (ASME):

1. B16.18-2012 - Cast Copper Alloy Solder Joint Pressure Fittings.

2. B16.22-2013 - Wrought Copper and Copper Alloy Solder Joint Pressure

Fittings.

3. B16.24-2011 - Cast Copper Alloy Pipe Flanges and Flanged Fittings:

Classes 150, 300, 600, 900, 1500 and 2500.

C. American Society Of Sanitary Engineering (ASSE):

32 84 00 - 2

1. 1013-2011 - Reduced Pressure Principle Backflow Preventers and

Reduced Pressure Principle Fire Protection Backflow Preventers.

D. ASTM International (ASTM):

1. B88-14/B88M-13 - Seamless Copper Water Tube.

2. B813-10 - Liquid and Paste Fluxes for Soldering of Copper and Copper

Alloy Tube.

3. D1785-15 – Poly (Vinyl Chloride) (PVC) Plastic Pipe, Schedule 40, 80, and 120.

4. D2239-12- Polyethylene (PE) Plastic Pipe (SIDR) Based on controlled

Inside Diameter.

5. D2241-15 – Poly (Vinyl Chloride) (PVC) Pressure Rated Pipe (SDR

Series).

6. D2466-15 – Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40.

7. D2564-12 - Solvent Cements for Poly (Vinyl Chloride) (PVC) Plastic

Piping Systems.

8. D2609-15 - Plastic Insert Fittings for Polyethylene (PE) Plastic

Pipe.

9. D2683-14 - Socket-Type Polyethylene Fittings for Outside

Diameter-Controlled Polyethylene Pipe and Tubing.

10. D2855-15 - Two-Step (Primer and Solvent Cement) Method of Joining

Poly (Vinyl Chloride) (PVC) or Chlorinated Poly (Vinyl Chloride)

(CPVC) Pipe and Piping Components with Tapered Sockets.

E. American Welding Society (AWS):

1. A5.8/A5.8M-04 - Filler Metals for Brazing and Braze Welding.

F. National Fire Protection Association (NFPA):

1. 70 2011 Edition - National Electrical Code.

1.6 PREINSTALLATION MEETINGS

A. Conduct preinstallation meeting at project site before beginning Work of this section.

1. Required Participants:

a. Contracting Officer's Representative.

Contractor.

b. Installer.

32 84 00 - 3

2. Meeting Agenda: Distribute agenda to participants minimum 3 days before meeting.

a. Installation schedule.

b. Installation sequence.

c. Preparatory work.

d. Protection before, during, and after installation.

e. Installation.

f. Terminations.

g. Transitions and connections to other work.

h. Inspecting and testing.

i. Other items affecting successful completion.

3. Document and distribute meeting minutes to participants to record decisions affecting installation.

1.7 SUBMITTALS

A. Submittal Procedures: Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.

B. Submittal Drawings:

1. Show size, configuration, and installation details.

2. Show complete detailed irrigation layout covering design of system showing pipe sizes and lengths; fittings; locations; types and sizes of sprinklers; controls; backflow preventers; valves; drainage pits;

location and mounting details of electrical control equipment complete wiring diagram showing routes and wire sizes for; power, signal and control wiring details and connections to water supply main.

3. Do not start work before final shop drawing approval.

C. Manufacturer's Literature and Data:

1. Description of each product.

a. Include rated capacities, operating characteristics, electrical characteristics, and furnished specialties and accessories.

b. Include zone chart and controller timing schedule showing each irrigation zone and its control valve; and show time settings for each automatic controller zone.

2. Installation instructions.

3. Warranty.

D. Extra Materials: Show labels describing contents.

32 84 00 - 4

1. Rotary and Spray Head Sprinklers Bubblers Emitters: 5 Insert number percent of amount installed for each type and size indicated, but no fewer than 2 units.

1.8 QUALITY ASSURANCE

A. Installer Qualifications:

1. Regularly installs specified products.

2. Installed specified products with satisfactory service on five similar installations for minimum five years.

a. Project Experience List: Provide contact names and addresses for completed projects.

1.9 DELIVERY, STORAGE, AND HANDLING

A. Deliver products in manufacturer's original sealed packaging.

B. Mark packaging, legibly. Indicate manufacturer's name or brand, type, production run number, and manufacture date.

C. Before installation, return or dispose of products within distorted, damaged, or opened packaging.

D. Store plastic piping protected from direct sunlight. Support pipe to prevent sagging and bending.

1.10 WARRANTY

A. Construction Warranty: FAR clause 52.246-21, "Warranty of

Construction."

1.11 MATERIALS

A. Piping Materials:

1. Copper Tubes: ASTM B88, Type L Type M.

a. Fittings: ASME B16.18 and ASME B16.22 solder-joint fittings.

b. Bronze Flange: ASME B16.24, class 150, ASTM B32 solder-joint end.

c. Union: Cast-copper alloy with ball-and-socket, solder joints or threaded ends.

d. Brazing Filler Metal: AWS A5.8.

e. Solder: ASTM B32, tin-antimony. Flux soldering, ASTM B813.

2. Polyethylene (PE) Plastic Pipe with Controlled ID: ASTM D2239, SIDR

11.5 or SIDR 15.

a. Fittings: ASTM D2609.

b. Flange Gaskets, Bolts, and Nuts: Type as recommended by manufacturer.

32 84 00 - 5

3. Polyethylene (PE) Plastic Pipe: AWWC906 with dimension ratio of 7.3, 9, or 9.3 to provide 160 psi to 200 psi minimum pressure rating.

a. Fittings: ASTM D3261 ASTM D2683.

4. Polyvinyl Chloride (PVC) Pipe: ASTM D1785 PVC 1120, Schedule 40 80;

or ASTM D2241, PVC 1120 compound, SDR 21 or SDR 26.

a. Fittings:

1) Socket Type: ASTM D2466, Schedule 40 ASTM D, 2464 Schedule

80.

2) Threaded Type: ASTM D2464, Schedule 80.

3) Swing Joints: Threaded fittings with elastomeric seals and minimum 200 psi working pressure.

b. Solvent Cement: ASTM D2564.

c. Flange Gaskets, Bolts, and Nuts: Type as recommended by manufacturer.

B. Valves:

1. Underground Shut-Off Valves:

a. Butterfly Valves 2 Inches and Larger: AWWC504, iron body, bronze mounted, double disc with parallel or inclined seats, non-rising stem turning clockwise to close, 150 psi minimum working pressure.

b. Ball Valves, Isolation valves, 1-1/2 Inch and Smaller: Full-port ball valves with bronze body, PTFE seats, and 90 degree on/off handle. Ball valves to have NPT female end connections.

c. Operations:

1) Underground Applications: Use valves with 2-inch nut for

T-Handle socket wrench operation.

2) Aboveground and Valve Pit Applications: Use valves with handwheels.

3) Valve ends: Accommodate type of main pipe adjacent to valve.

2. Swing Check Valves:

a. Valves Smaller than 4 inches: ASTM B61 or ASTM B62, 125 psi bronze body and bonnet.

3. Quick Couplers: Brass parts, two-piece unit consisting of coupler water seal valve assembly and removable upper body to allow spring and key track to be serviced without shut down of main.

a. Lids: Lockable vinyl cover with springs for positive closure on key removal.

32 84 00 - 6

4. Reduced Pressure Principle Backflow Preventer: ASSE 1013. Provide for new connection to water distribution system.

C. Sleeve Material: ASTM D2241, Schedule 40.

1.12 SPRINKLER HEADS

A. Sprinkler Heads: Manufacturer's standard unit designed to provide uniform coverage over entire area of spray as indicated on Drawings.

Internal assembly includes filter screen, capable of removal from top without removing sprinkler case from riser.

1.13 LOW VOLTAGE CONTROL VALVE WIRE

A. Wire: NFPA 70, solid copper wire, minimum 14 gage, UL LLC approved for direct burial in ground.

1.14 LOW VOLTAGE CONTROLLER CABLE

A. Multi-strand cable, UL-approved for direct burial in ground, size and wire type according to manufacturer’s recommendations.

1.15 TRACER WIRES

A. Tracer Wires: Plastic-coated copper tracer wire, 14 gage, green, Type

TW, installed with non-metallic irrigation main lines.

1.16 SPLICING MATERIALS

A. Epoxy waterproof sealing packet.

1.17 ACCESSORIES

A. Valve Box: Precast concrete with compressive strength in excess of

4,000 psi. Provide valve boxes suitable and adjustable for valve used.

1. Cast word “Irrigation” on cover.

2. Provide "T" handle socket wrenches, 5/8-inch round stock with sufficient length to extend 2 feet above top of deepest valve box cover.

3. Stencil controller and circuit numbers with permanent white epoxy paint. Letters minimum 3 inches height.

4. Provide Insert Number 30 inches long valve adjustment keys.

5. Valve Box in Plant Bed Areas: HDPE structural foam Type A, Class

III.

a. Color: Green Tan.

b. Size: Minimum 19 inches long by 14 inches deep with key-lockable hinged cast iron cover.

32 84 00 - 7

6. Drip Zone Lateral Flush Cap Assembly: HDPE round reinforced plastic valve box and lid with lift hole, minimum 5-3/4 inches diameter top opening and 9-1/16 inches minimum height.

7. Emitter Access Boxes: UV resistant thermoplastic round plastic boxes with lid, tan in color. Top diameter 5 inches and 10-1/4 inches high, minimum.

B. Backflow Preventer: ASSE 1013.Provide reduced pressure principle backflow preventer at each new connection to water distribution system.

C. Pressure Gages: ASME B40.100, 4-1/2 inches diameter, all metal case, with bottom connection.

1. Dial: Dead black or white lacquered throughout with maximum graduations of 2 psi. Provide shut-off cocks.

D. Concrete Pit: Reinforced poured in place concrete structure as specified in Section 03 30 00, CAST-IN-PLACE CONCRETE or approved precast concrete unit.

1. Frames and Covers for Concrete Pit:

a. For roadway applications, traffic rated frame and cover, AASHTO

H20-44 loading.

b. For non-roadway applications, provide:

1) Cast-iron cover with cast-in identification symbol

"IRR-WATER".

2) Frame: Type I, Straight Traffic Frame, Style A, Size 30A.

3) Cover: Type Type B, Size 30A.

PART 2 - EXECUTION

2.1 PREPARATION

A. Examine and verify substrate suitability for product installation.

B. Protect existing construction and completed work from damage.

C. Examine proposed irrigation areas for compliance with requirements and conditions affecting installation and performance.

D. Set stakes to identify locations of proposed irrigation system. Obtain

Contracting Officer’s Representative's approval before excavation.

2.2 INSTALLATION - GENERAL

A. Install products according to manufacturer's instructions and approved submittal drawings.

1. When manufacturer's instructions deviate from specifications, submit proposed resolution for Contracting Officer's Representative consideration.

32 84 00 - 8

B. Perform excavation, trenching, and backfilling for sprinkler system as specified in Section 31 20 00, EARTHWORK.

2.3 PIPE INSTALLATION - GENERAL

A. Layout work as indicated on drawings. Lines are to be in common trench wherever possible.

B. Install sprinkler lines to avoid HVAC trenches, electric ducts, storm and sanitary sewer lines, and existing water and gas mains; all of which have right of way.

C. Do not lay pipe on unstable material, in wet trenches or, in opinion of

Contracting Officer’s Representative, when trench or weather conditions are unsuitable for work.

D. Allow minimum of 3 inches between parallel pipes in same trench.

E. Clean interior portion of pipe and fittings of foreign matter before installation. Securely close open ends of pipe and fittings with caps or plugs to protect fixtures and equipment against dirt, water and chemical or mechanical injury. At completion of all work thoroughly clean fixtures, exposed materials and equipment.

F. Install full length of each section of pipe resting upon pipe bed with recesses excavated to accommodate bells or joints. Do not lay pipe on wood blocking.

G. Hold pipe securely in place while joint is being made.

H. Do not work over, or walk on, pipe in trenches until covered by layers of earth, well tamped, in place to depth of 12 inches over pipe.

I. Install irrigation lines and control wire at boundaries of graves, through designated utility lanes or beside roadways without disruption of irrigation system.

J. Install irrigation lines and control wire at designated utility lanes or beside roadways where possible.

K. Connect new system to existing mains. Disconnect and abandon existing irrigation system.

L. Install concrete thrust blocks where irrigation main changes direction at “L” and “T” locations and where irrigation main terminates. Delay pressure tests until minimum 36 hours after completing thrust blocks.

Size and place concrete thrust blocks for supply mains according to pipe manufacturer's instructions.

M. Minimum cover over water mains, 30 inches. Cover laterals to minimum depth of 24 inches.

32 84 00 - 9

N. Place warning tape 12 inches above sprinkler system water mains and laterals.

2.4 PLASTIC PIPE INSTALLATION

A. Install plastic pipe snaked in trench at least 1 foot per 100 feet to allow for thermal construction and expansion and to reduce strain on connections.

B. Joints:

1. Solvent Welded Socket Type: ASTM D2855.

2. Threaded Type: Apply liquid Polytetrafluoroethylene (PTFE) thread lubricant or PTFE thread tape. After joint is made hand tight

(hard), strap wrench should be used to make up to two additional full turns.

2.5 VALVE INSTALLATION

A. Group remote control valves wherever possible and aligned at set dimension back of curb along roads.

B. Do not install valves under roads, pavement or walks.

C. Clean interior of valves of foreign matter before installation.

D. House pressure control valves installed adjacent to remote control valve in same valve box.

E. Install valve box with cover flush with finished grade.

F. Install control valves minimum 3 inches below finished grade.

2.6 SLEEVE INSTALLATION

A. Install sleeves where pipe and control wires are installed under walks, paving, walls, and other similar areas.

B. Install sleeves twice line size or greater extend 12 inches beyond edges of paving or construction.

C. Bed sleeves with minimum 4 inches sand backfill above top of pipe in areas where pipe is placed before hardscape is installed.

2.7 SPRINKLER AND QUICK COUPLER INSTALLATION

A. Install sprinkler heads and quick couplers on temporary nipples extending at least 3 inches above finished grade. After turf is established, remove temporary nipples, install sprinkler heads and quick couplers at ground surface.

B. Locate part circle heads to maintain maximum distance of 6 inches from edges and other boundaries.

C. Provide swing joint assembly in all sprinklers, shrub sprays and quick couplers.

32 84 00 - 10

D. Set shrub spray heads 8 inches above grade and 12 inches from edge of curb or pavement. Place adjacent to walls. Stake heads before backfilling trenches. Support stakes parallel to riser.

E. Install entire system for manual and automatic draining. Equip low point of each underground line with drain valve draining into an excavation containing gravel. Backfill with excavated material and cover with 2 inches precast concrete cover.

2.8 PROTECTION

A. Protect irrigation system from traffic and construction operations.

B. Remove protective materials immediately before acceptance.

C. Repair damage.

- - - E N D - - -

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Automatically-controlled lawn trees shrub irrigation system, controllers and all other appurtenances.

1.2 RELATED REQUIREMENTS

A. Concrete Work, Reinforcing, Placement and Finishing: Section 03 30 00, CAST-IN-PLACE CONCRETE.

B. Excavation, Trench Widths, Pipe Bedding, Backfill, Shoring, Sheeting, Bracing: Section 31 20 00, EARTH MOVING.

1.3 ABBREVIATIONS

A. HDPE: High-density polyethylene plastic.

B. NPT: National pipe thread.

C. PTFE: Polytetrafluoroethylene.

D. PVC: Polyvinyl chloride plastic.

1.4 DEFINITIONS

A. Circuit Piping: Downstream from control valves to sprinklers, specialties, and drain valves.

B. Drain Piping: Downstream from circuit-piping drain valves.

C. Main Piping: Downstream from point of connection to water distribution piping to, and including, control valves.

D. Low Voltage: As defined in NFPA 70 for circuits and equipment operating at less than 50 Volts or for remote-control, signaling power-limited circuits.

1.5 APPLICABLE PUBLICATIONS

A. Comply with references to extent specified in this section.

B. American Society of Mechanical Engineers (ASME):

1. B16.18-2012 - Cast Copper Alloy Solder Joint Pressure Fittings.

2. B16.22-2013 - Wrought Copper and Copper Alloy Solder Joint Pressure Fittings.

3. B16.24-2011 - Cast Copper Alloy Pipe Flanges and Flanged Fittings: Classes 150, 300, 600, 900, 1500 and 2500.

C. American Society Of Sanitary Engineering (ASSE):

1. 1013-2011 - Reduced Pressure Principle Backflow Preventers and Reduced Pressure Principle Fire Protection Backflow Preventers.

D. ASTM International (ASTM):

1. B88-14/B88M-13 - Seamless Copper Water Tube.

2. B813-10 - Liquid and Paste Fluxes for Soldering of Copper and Copper Alloy Tube.

3. D1785-15 – Poly (Vinyl Chloride) (PVC) Plastic Pipe, Schedule 40, 80, and 120.

4. D2239-12- Polyethylene (PE) Plastic Pipe (SIDR) Based on controlled Inside Diameter.

5. D2241-15 – Poly (Vinyl Chloride) (PVC) Pressure Rated Pipe (SDR Series).

6. D2466-15 – Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40.

7. D2564-12 - Solvent Cements for Poly (Vinyl Chloride) (PVC) Plastic Piping Systems.

8. D2609-15 - Plastic Insert Fittings for Polyethylene (PE) Plastic Pipe.

9. D2683-14 - Socket-Type Polyethylene Fittings for Outside Diameter-Controlled Polyethylene Pipe and Tubing.

10. D2855-15 - Two-Step (Primer and Solvent Cement) Method of Joining Poly (Vinyl Chloride) (PVC) or Chlorinated Poly (Vinyl Chloride) (CPVC) Pipe and Piping Components with Tapered Sockets.

E. American Welding Society (AWS):

1. A5.8/A5.8M-04 - Filler Metals for Brazing and Braze Welding.

F. National Fire Protection Association (NFPA):

1. 70 2011 Edition - National Electrical Code.

1.6 PREINSTALLATION MEETINGS

A. Conduct preinstallation meeting at project site before beginning Work of this section.

1. Required Participants:

a. Contracting Officer's Representative.

Contractor.

b. Installer.

2. Meeting Agenda: Distribute agenda to participants minimum 3 days before meeting.

a. Installation schedule.

b. Installation sequence.

c. Preparatory work.

d. Protection before, during, and after installation.

e. Installation.

f. Terminations.

g. Transitions and connections to other work.

h. Inspecting and testing.

i. Other items affecting successful completion.

3. Document and distribute meeting minutes to participants to record decisions affecting installation.

1.7 SUBMITTALS

A. Submittal Procedures: Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.

B. Submittal Drawings:

1. Show size, configuration, and installation details.

2. Show complete detailed irrigation layout covering design of system showing pipe sizes and lengths; fittings; locations; types and sizes of sprinklers; controls; backflow preventers; valves; drainage pits; location and mounting details of electrical...

3. Do not start work before final shop drawing approval.

C. Manufacturer's Literature and Data:

1. Description of each product.

a. Include rated capacities, operating characteristics, electrical characteristics, and furnished specialties and accessories.

b. Include zone chart and controller timing schedule showing each irrigation zone and its control valve; and show time settings for each automatic controller zone.

2. Installation instructions.

3. Warranty.

D. Extra Materials: Show labels describing contents.

1. Rotary and Spray Head Sprinklers Bubblers Emitters: 5 Insert number percent of amount installed for each type and size indicated, but no fewer than 2 units.

1.8 QUALITY ASSURANCE

A. Installer Qualifications:

1. Regularly installs specified products.

2. Installed specified products with satisfactory service on five similar installations for minimum five years.

a. Project Experience List: Provide contact names and addresses for completed projects.

1.9 DELIVERY, STORAGE, AND HANDLING

A. Deliver products in manufacturer's original sealed packaging.

B. Mark packaging, legibly. Indicate manufacturer's name or brand, type, production run number, and manufacture date.

C. Before installation, return or dispose of products within distorted, damaged, or opened packaging.

D. Store plastic piping protected from direct sunlight. Support pipe to prevent sagging and bending.

1.10 WARRANTY

A. Construction Warranty: FAR clause 52.246-21, "Warranty of Construction."

1.11 MATERIALS

A. Piping Materials:

1. Copper Tubes: ASTM B88, Type L Type M.

a. Fittings: ASME B16.18 and ASME B16.22 solder-joint fittings.

b. Bronze Flange: ASME B16.24, class 150, ASTM B32 solder-joint end.

c. Union: Cast-copper alloy with ball-and-socket, solder joints or threaded ends.

d. Brazing Filler Metal: AWS A5.8.

e. Solder: ASTM B32, tin-antimony. Flux soldering, ASTM B813.

2. Polyethylene (PE) Plastic Pipe with Controlled ID: ASTM D2239, SIDR 11.5 or SIDR 15.

a. Fittings: ASTM D2609.

b. Flange Gaskets, Bolts, and Nuts: Type as recommended by manufacturer.

3. Polyethylene (PE) Plastic Pipe: AWWC906 with dimension ratio of 7.3, 9, or 9.3 to provide 160 psi to 200 psi minimum pressure rating.

a. Fittings: ASTM D3261 ASTM D2683.

4. Polyvinyl Chloride (PVC) Pipe: ASTM D1785 PVC 1120, Schedule 40 80; or ASTM D2241, PVC 1120 compound, SDR 21 or SDR 26.

a. Fittings:

1) Socket Type: ASTM D2466, Schedule 40 ASTM D, 2464 Schedule 80.

2) Threaded Type: ASTM D2464, Schedule 80.

3) Swing Joints: Threaded fittings with elastomeric seals and minimum 200 psi working pressure.

b. Solvent Cement: ASTM D2564.

c. Flange Gaskets, Bolts, and Nuts: Type as recommended by manufacturer.

B. Valves:

1. Underground Shut-Off Valves:

a. Butterfly Valves 2 Inches and Larger: AWWC504, iron body, bronze mounted, double disc with parallel or inclined seats, non-rising stem turning clockwise to close, 150 psi minimum working pressure.

b. Ball Valves, Isolation valves, 1-1/2 Inch and Smaller: Full-port ball valves with bronze body, PTFE seats, and 90 degree on/off handle. Ball valves to have NPT female end connections.

c. Operations:

1) Underground Applications: Use valves with 2-inch nut for T-Handle socket wrench operation.

2) Aboveground and Valve Pit Applications: Use valves with handwheels.

3) Valve ends: Accommodate type of main pipe adjacent to valve.

2. Swing Check Valves:

a. Valves Smaller than 4 inches: ASTM B61 or ASTM B62, 125 psi bronze body and bonnet.

3. Quick Couplers: Brass parts, two-piece unit consisting of coupler water seal valve assembly and removable upper body to allow spring and key track to be serviced without shut down of main.

a. Lids: Lockable vinyl cover with springs for positive closure on key removal.

4. Reduced Pressure Principle Backflow Preventer: ASSE 1013. Provide for new connection to water distribution system.

C. Sleeve Material: ASTM D2241, Schedule 40.

1.12 SPRINKLER HEADS

A. Sprinkler Heads: Manufacturer's standard unit designed to provide uniform coverage over entire area of spray as indicated on Drawings. Internal assembly includes filter screen, capable of removal from top without removing sprinkler case from riser.

1.13 LOW VOLTAGE CONTROL VALVE WIRE

A. Wire: NFPA 70, solid copper wire, minimum 14 gage, UL LLC approved for direct burial in ground.

1.14 LOW VOLTAGE CONTROLLER CABLE

A. Multi-strand cable, UL-approved for direct burial in ground, size and wire type according to manufacturer’s recommendations.

1.15 TRACER WIRES

A. Tracer Wires: Plastic-coated copper tracer wire, 14 gage, green, Type TW, installed with non-metallic irrigation main lines.

1.16 SPLICING MATERIALS

A. Epoxy waterproof sealing packet.

1.17 ACCESSORIES

A. Valve Box: Precast concrete with compressive strength in excess of 4,000 psi. Provide valve boxes suitable and adjustable for valve used.

1. Cast word “Irrigation” on cover.

2. Provide "T" handle socket wrenches, 5/8-inch round stock with sufficient length to extend 2 feet above top of deepest valve box cover.

3. Stencil controller and circuit numbers with permanent white epoxy paint. Letters minimum 3 inches height.

4. Provide Insert Number 30 inches long valve adjustment keys.

5. Valve Box in Plant Bed Areas: HDPE structural foam Type A, Class III.

a. Color: Green Tan.

b. Size: Minimum 19 inches long by 14 inches deep with key-lockable hinged cast iron cover.

6. Drip Zone Lateral Flush Cap Assembly: HDPE round reinforced plastic valve box and lid with lift hole, minimum 5-3/4 inches diameter top opening and 9-1/16 inches minimum height.

7. Emitter Access Boxes: UV resistant thermoplastic round plastic boxes with lid, tan in color. Top diameter 5 inches and 10-1/4 inches high, minimum.

B. Backflow Preventer: ASSE 1013.Provide reduced pressure principle backflow preventer at each new connection to water distribution system.

C. Pressure Gages: ASME B40.100, 4-1/2 inches diameter, all metal case, with bottom connection.

1. Dial: Dead black or white lacquered throughout with maximum graduations of 2 psi. Provide shut-off cocks.

D. Concrete Pit: Reinforced poured in place concrete structure as specified in Section 03 30 00, CAST-IN-PLACE CONCRETE or approved precast concrete unit.

1. Frames and Covers for Concrete Pit:

a. For roadway applications, traffic rated frame and cover, AASHTO H20-44 loading.

b. For non-roadway applications, provide:

1) Cast-iron cover with cast-in identification symbol "IRR-WATER".

2) Frame: Type I, Straight Traffic Frame, Style A, Size 30A.

3) Cover: Type Type B, Size 30A.

PART 2 - EXECUTION

2.1 PREPARATION

A. Examine and verify substrate suitability for product installation.

B. Protect existing construction and completed work from damage.

C. Examine proposed irrigation areas for compliance with requirements and conditions affecting installation and performance.

D. Set stakes to identify locations of proposed irrigation system. Obtain Contracting Officer’s Representative's approval before excavation.

2.2 INSTALLATION - GENERAL

A. Install products according to manufacturer's instructions and approved submittal drawings.

1. When manufacturer's instructions deviate from specifications, submit proposed resolution for Contracting Officer's Representative consideration.

B. Perform excavation, trenching, and backfilling for sprinkler system as specified in Section 31 20 00, EARTHWORK.

2.3 PIPE INSTALLATION - GENERAL

A. Layout work as indicated on drawings. Lines are to be in common trench wherever possible.

B. Install sprinkler lines to avoid HVAC trenches, electric ducts, storm and sanitary sewer lines, and existing water and gas mains; all of which have right of way.

C. Do not lay pipe on unstable material, in wet trenches or, in opinion of Contracting Officer’s Representative, when trench or weather conditions are unsuitable for work.

D. Allow minimum of 3 inches between parallel pipes in same trench.

E. Clean interior portion of pipe and fittings of foreign matter before installation. Securely close open ends of pipe and fittings with caps or plugs to protect fixtures and equipment against dirt, water and chemical or mechanical injury. At completi...

F. Install full length of each section of pipe resting upon pipe bed with recesses excavated to accommodate bells or joints. Do not lay pipe on wood blocking.

G. Hold pipe securely in place while joint is being made.

H. Do not work over, or walk on, pipe in trenches until covered by layers of earth, well tamped, in place to depth of 12 inches over pipe.

I. Install irrigation lines and control wire at boundaries of graves, through designated utility lanes or beside roadways without disruption of irrigation system.

J. Install irrigation lines and control wire at designated utility lanes or beside roadways where possible.

K. Connect new system to existing mains. Disconnect and abandon existing irrigation system.

L. Install concrete thrust blocks where irrigation main changes direction at “L” and “T” locations and where irrigation main terminates. Delay pressure tests until minimum 36 hours after completing thrust blocks. Size and place concrete thrust blocks ...

M. Minimum cover over water mains, 30 inches. Cover laterals to minimum depth of 24 inches.

N. Place warning tape 12 inches above sprinkler system water mains and laterals.

2.4 PLASTIC PIPE INSTALLATION

A. Install plastic pipe snaked in trench at least 1 foot per 100 feet to allow for thermal construction and expansion and to reduce strain on connections.

B. Joints:

1. Solvent Welded Socket Type: ASTM D2855.

2. Threaded Type: Apply liquid Polytetrafluoroethylene (PTFE) thread lubricant or PTFE thread tape. After joint is made hand tight (hard), strap wrench should be used to make up to two additional full turns.

2.5 VALVE INSTALLATION

A. Group remote control valves wherever possible and aligned at set dimension back of curb along roads.

B. Do not install valves under roads, pavement or walks.

C. Clean interior of valves of foreign matter before installation.

D. House pressure control valves installed adjacent to remote control valve in same valve box.

E. Install valve box with cover flush with finished grade.

F. Install control valves minimum 3 inches below finished grade.

2.6 SLEEVE INSTALLATION

A. Install sleeves where pipe and control wires are installed under walks, paving, walls, and other similar areas.

B. Install sleeves twice line size or greater extend 12 inches beyond edges of paving or construction.

C. Bed sleeves with minimum 4 inches sand backfill above top of pipe in areas where pipe is placed before hardscape is installed.

2.7 SPRINKLER AND QUICK COUPLER INSTALLATION

A. Install sprinkler heads and quick couplers on temporary nipples extending at least 3 inches above finished grade. After turf is established, remove temporary nipples, install sprinkler heads and quick couplers at ground surface.

B. Locate part circle heads to maintain maximum distance of 6 inches from edges and other boundaries.

C. Provide swing joint assembly in all sprinklers, shrub sprays and quick couplers.

D. Set shrub spray heads 8 inches above grade and 12 inches from edge of curb or pavement. Place adjacent to walls. Stake heads before backfilling trenches. Support stakes parallel to riser.

E. Install entire system for manual and automatic draining. Equip low point of each underground line with drain valve draining into an excavation containing gravel. Backfill with excavated material and cover with 2 inches precast concrete cover.

2.8 PROTECTION

A. Protect irrigation system from traffic and construction operations.

B. Remove protective materials immediately before acceptance.

C. Repair damage.

STATEMENT OF WORK (SOW)

As of 09/DECEMBER/2020

IFCAP Tracking Number: 600-21-1-5667-0145

1. Contracting Officer’s Representative (COR).

Name: KEITH DIDRICKSON Section: Facilities Address: 5901 E. 7th ST. Long Beach CA. 90822

Phone Number: 562-826-8000, ext: 2469.

Fax Number: 562-826-5981 E-Mail Address: Keith.Didrickson@va.gov

2. Contract Title. VA LONG BEACH, 5901 E. 7th ST LONG BEACH, CA. 90822.

Irrigation repairs and installation of new ADA compliant sidewalks and ramps to include removal and replacement of downed street light pole at Palm Road, between Bellflower Blvd and Pine Road.

3. Background: Due to Construction of the new Mental Health Building, irrigation running the length of Pine Road from Palm Road to 7th Street has been disabled. With the water being shut off, all of the grass has died causing issues with dust control and mud during the rains. Also, there is a new Vehicular and Pedestrian gate going in at the entrance of Gate #2, (Palm Road). VA will be installing a new sidewalk with ADA compliant ramps to re-route the pedestrian traffic along Pine Road, as there is nothing in place at this time. Also, remove existing downed street light pole and replace with VA approved Concrete street light pole.

4. Scope.

1. Contractor shall provide all labor, parts, materials, equipment, signage, safety barriers and Supervision required to perform all work to repair/re-route the irrigation lines at Pine and Palm Roads, also, remove existing curb and gutter to install new ADA compliant sidewalks with ramps.

2. Contractor shall secure work area, to include all safety barriers, signage, Pedestrian and Vehicular Traffic control.

3. Contractor and Employees shall report to the COR, Keith Didrickson, for the issuing of Temporary ID Badges from the VA Police Department, which are required to be worn at all times while on VA Property.

4. Supervisor: 30 Hour OSHA Construction Safety Training.

5. Personnel: 10 Hour OSHA Construction Safety Training.

6. Contractor and Employees to attend a 30 minute VA Safety briefing provided by the VA

Safety Department.

5. Specific Tasks.

Irrigation Repair/Re-location, remove and replace existing street light pole, intersection of Palm and Pine Roads.

1. Contractor shall secure the work site with Steel Trench Plates, Delineators, Safety Barriers, Plywood, Caution Tape and Traffic Control.

2. Contractor shall provide Ground Penetrating Radar (GPR) for underground utilities prior to any trenching/excavation.

3. Contractor shall isolate and shut down main water on Pine Road.

4. Contractor shall sawcut existing asphalt 30’ from curb to just past center of the intersection of Palm & Pine Road and dispose of at an approved dump site.

5. Contractor shall excavate down 36” – 42” to expose 6” main water line and dispose of digs at an approved dump site.

6. Contractor shall place concrete pad (48” x 24”) with web steel reinforcement and broom finish for new backflow device, South side of Palm Road.

7. Contractor shall install new 2” backflow device, South side of Palm Road.

8. Contractor shall install VA approved cage for backflow.

9. Contractor shall Hot Tap into existing 6” main water line with a 2” copper line and tie into new backflow device.

10. Contractor shall backfill excavation with sand to proper compaction standards.

11. Contractor shall place approximately 30’ of asphalt to comply with Cal Trans standards for roadways.

12. Contractor shall re-energize the system after repairs are made, and check for normal operations.

13. Contractor shall remove existing downed street light pole and dispose of at an approved dump site.

14. Contractor shall remove existing 24” light base and dispose of at an approved dump site.

15. Contractor shall place new concrete light base, 32” square by 4’ deep, with top of base flush with existing concrete curbing.

16. Contractor shall install one (1) new Concrete VA Standard light pole.

17. Contractor shall leave work area clean of all debris and materials.

18. Due to vehicular traffic in the area, work shall be performed on the weekend.

Install ADA compliant sidewalk, relocate existing irrigation and re-landscape area at Gate #2.

1. Contractor shall secure work area with delineators, safety barriers, caution tape and traffic control.

2. Contractor shall remove and salvage 3 existing Bird of Paradise and 14 existing Japanese Boxwood plants on the North side of Palm Road.

3. Contractor shall clear, grub, excavate, grade (140 SQ/FT) relocate irrigation valve box, relocate, reroute existing irrigation lines and sprinkler heads on the North side of Palm Road.

4. Contractor shall saw cut and remove 20 L/FT of existing concrete curbing and gutter.

5. Contractor shall place 20 L/F of 6” curb and gutter for ADA compliant ramp.

6. Contractor shall place 335 SQ/FT of 3000 psi new concrete sidewalk, 4 inches thick with #3 web steel reinforcement.

7. Contractor shall place Truncated Domes at the end of both ramps.

8. Contractor shall place 850 SQ/FT of weed barrier.

9. Contractor shall install 86 L/F of green interlocking steel edging.

10. Contractor shall place 8 C/Y of Gorilla Hair Mulch.

11. Contractor shall place 15 S/F of Decomposed Granite (DG), desert gold.

12. Contractor shall place 200 fertilizer tablets, 3 per 7 Gal plant and 1 per 1 Gal plant.

13. Contractor shall remove 1 existing Indian Hawthorn plant.

14. Contractor shall relocate 1 Japanese Boxwood on the North side of Palm Road.

15. Contractor shall plant 9 new Confederate Jasmine plants, 1 Gal, 2’ O/C on the North side of

Palm Road.

16. Contractor shall plant 1 relocated Japanese Boxwood on the North side of Palm Road.

17. Contractor shall layout planting beds, with container plants for review and approval.

18. Contractor shall ensure that all plants are Grade A as per CA nursery grades and standards, free of disease and pests, weeds and are not rootbound in containers.

19. All plants shall be inspected by VA Landscape Architect and approved by VA prior to removal from nursery containers.

20. Contractor shall clear, grub, excavate, grade (1000 SQ/FT), relocate irrigation valve box, relocate, reroute existing irrigation lines and sprinkler heads on the South side of Palm

21. Contractor shall plant 13 relocated Japanese Boxwoods, 2’ O/C on the South Side of Palm

22. Contractor plant 3 relocated Bird of Paradise on the South side of Palm Road.

23. Contractor shall plant 31 Japanese Boxwood plants, 7 Gal, 2’ O/C, on the South side of

Palm Road.

24. Contractor shall plant 3 Bird of Paradise, 7 Gal, on the South side of Palm Road.

25. Contractor shall plant 34 Confederate Jasmine, 1 Gal, 2’ O/C, on South side of Palm Road.

Services to perform duties stated in the “Scope of Work”.

5.1 Tasks 1 - Enterprise Management Controls.

Deliverables: Contract Management Plan N/A

Monthly Status Report N/A

5.2 Task 2. N/A

5.2.1 Subtask 1. N/A

5.2.2 Subtask 2. N/A

Deliverables: N/A

6. Performance Monitoring - Routine inspections by Facilities Personnel

7. Security Requirements: Vendor will not have access to patient records, data or VA computer systems

8. Government-Furnished Equipment (GFE)/Government-Furnished Information (GFI): No Government equipment will be used by the Vendor

9. Other Pertinent Information or Special Considerations.

10. Risk Control: N/A

11. Place of Performance: GATE #2, Palm Road

12. Period of Performance: 60 calendar days

13. Delivery Schedule: N/A

5.2 Task 2. N/A

7. Security Requirements: Vendor will not have access to patient records, data or VA computer systems

12. Period of Performance: 60 calendar days

32 05 23 - 1

SECTION 32 05 23

CEMENT AND CONCRETE FOR EXTERIOR IMPROVEMENTS

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Subbase for concrete pavements.

2. Curbs, gutters, and combination curbs and gutters wheel stops.

3. Pedestrian Pavement: Walks, pedestrian crossings, wheelchair curb ramps,

1.2 RELATED REQUIREMENTS

A. Subgrade Preparation and Subbase Compaction: Section 31 20 00, EARTHWORK.

1.3 APPLICABLE PUBLICATIONS

A. Comply with references to extent specified in this section.

B. American Association of State Highway and Transportation Officials

(AASHTO):

1. M147-65-UL-04 - Materials for Aggregate and Soil-Aggregate Subbase, Base and Surface Courses.

2. M233-86 - Boiled Linseed Oil Mixture for Treatment of Portland Cement

Concrete.

C. American Concrete Institute (ACI):

1. 305R-10 - Guide to Hot Weather Concreting.

2. 306R-10 - Guide to Cold Weather Concreting.

D. American National Standards Institute (ANSI):

1. B101.3 - Wet DOCF of Common Hard Surface Floor Materials (Including

Action and Limit Thresholds for the Suitable Assessment of the

Measured Values).

E. ASTM International (ASTM):

1. A615/A615M-16 - Deformed and Plain Carbon Steel Bars for Concrete

Reinforcement.

2. A996/A996M-15 - Rail-Steel and Axle-Steel Deformed Bars for Concrete

Reinforcement.

3. A1064/A1064M-16 - Carbon-Steel Wire and Welded Wire Reinforcement, Plain and Deformed, for Concrete.

4. C33/C33M-16 - Concrete Aggregates.

5. C94/C94M-16 - Ready Mixed Concrete.

6. C143/C143M-15a - Slump of Hydraulic Cement Concrete.

7. C150/C150M-16 - Portland Cement.

8. C171-16 - Sheet Materials for Curing Concrete.

9. C260/C260M-10a - Air Entraining Admixtures for Concrete.

32 05 23 - 2

10. C309-11 - Liquid Membrane Forming Compounds for Curing Concrete.

11. C494/C494M-15a - Chemical Admixtures for Concrete.

12. C618-15 - Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in

Concrete.

13. C979/C979M-16 - Pigments for Integrally Colored Concrete.

14. C989/C989M-14 - Slag Cement for Use in Concrete and Mortars.

15. C1240-15 - Silica Fume Used in Cementitious Mixtures.

16. D1751-04(2013) e1 - Preformed Expansion Joint Filler for Concrete

Paving and Structural Construction (Nonextruding and Resilient

Bituminous Types).

17. D5893/D5893M-10 - Cold Applied, Single Component, Chemically Curing

Silicone Joint Sealant for Portland Cement Concrete Pavements.

18. D6690-15 - Joint and Crack Sealants, Hot Applied, for Concrete and

Asphalt Pavements.

1.4 PREINSTALLATION MEETINGS

A. Conduct preinstallation meeting at project site before beginning Work of this section.

1. Required Participants:

a. Contracting Officer's Representative.

b. Contractor.

c. Installer.

2. Meeting Agenda: Distribute agenda to participants minimum 3 days before meeting.

a. Installation schedule.

b. Installation sequence.

c. Preparatory work.

d. Protection before, during, and after installation.

e. Installation.

f. Terminations.

g. Transitions and connections to other work.

h. Inspecting and testing.

i. Other items affecting successful completion.

3. Document and distribute meeting minutes to participants to record decisions affecting installation.

1.5 SUBMITTALS

A. Submittal Procedures: Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND

SAMPLES.

B. Submittal Drawings:

1. Show size, configuration, and fabrication and installation details.

32 05 23 - 3

2. Show reinforcing.

3. Include jointing plan for concrete pavements, curbs and gutters.

C. Test reports: Certify products comply with specifications.

1. Concrete materials.

2. Select subbase materials.

3. Field test reports.

D. Certificates: Certify products comply with specifications.

1. Expansion joint filler.

2. Reinforcement.

3. Curing materials.

E. Qualifications: Substantiate qualifications comply with specifications.

Installer with project experience list.

1.6 QUALITY ASSURANCE

A. Installer Qualifications:

1. Regularly installs specified products.

2. Installed specified products with satisfactory service on five similar installations.

a. Project Experience List: Provide contact names and addresses for completed projects.

1.7 DELIVERY

A. Deliver steel reinforcement to prevent damage.

B. Before installation, return or dispose of distorted or damaged steel reinforcement.

C. Bulk Products: Deliver bulk products away from buildings, utilities, pavement, and existing turf and planted areas. Maintain dry bulk product storage away from contaminants.

1.8 STORAGE AND HANDLING

A. Protect products from damage during handling and construction operations.

1.9 WARRANTY

A. Construction Warranty: FAR clause 52.246-21, "Warranty of Construction."

PART 2 - PRODUCTS

2.1 CONCRETE MATERIALS

A. Portland Cement: ASTM C150/C150M, Type I or II.

B. Reinforcing Steel: ASTM A615/A615M or ASTM A996/A996M, Grade 280 (40);

Grade 420 (60); Grade 520 (75); Grade 550 (80); Grade 690 (100); deformed.

C. Expansion Joint Filler: ASTM D1751.

32 05 23 - 4

2.2 SELECT SUBBASE

A. Subbase: AASHTO M147; Grade A Grade B Grade C Grade D Grade E Grade F.

1. Select granular material composed of sand, sand-gravel, crushed stone, crushed or granulated slag, with or without soil binder, or combinations of these materials.

SUBBASE GRADING REQUIREMENTS

Sieve Size Percentage Passing by Mass

Grades

(mm) (in) A B C D E F

50 2 100 100

25 1 75-95 100 100 100 100

9.5 3/8 30-65 40-75 50-85 60-100

4.47 No. 4 25-55 30-60 35-65 50-85 55-100 70-100

2.00 No. 10 15-40 20-45 25-50 40-70 40-100 55-100

0.425 No. 40 8-20 15-30 15-30 25-45 20-50 30-70

0.075 No. 200 2-8 5-20 5-15 5-20 6-20 8-25

2.3 FORMS

A. Forms: Wood, plywood, metal, or other materials, approved by Contracting

Officer's Representative, of grade or type suitable to obtain type of finish specified.

1. Plywood: Exterior grade, free of defects and patches on contact surface.

2. Lumber: Sound, grade-marked, S4S stress graded softwood, minimum 50 mm

(2 inches) thick, free from warp, twist, loose knots, splits, or other defects.

B. Provide forms suitable in cross-section, depth, and strength to resist springing during depositing and consolidating concrete.

1. Do not use forms varying from straight line more than 3 mm in 3000 mm

(1/8 inch in 10 feet), horizontally and vertically.

C. Provide flexible or curved forms for forming radii.

2.4 CONCRETE MIXES

A. Design concrete mixes according to ASTM C94/C94M, Option C.

B. Concrete Type: Non-air-entrained Air-entrained. See Table I.

2.5 ACCESSORIES

A. Equipment and Tools: Obtain Contracting Officer's Representative's, approval of equipment and tools needed for handling materials and performing work before work begins.

32 05 23 - 5

B. Maintain equipment and tools in satisfactory working condition.

PART 3 - EXECUTION

3.1 PREPARATION

A. Examine and verify substrate suitability for product installation.

B. Protect existing construction and completed work from damage.

C. Prepare, construct, and finish subgrade. See Section 31 20 00, EARTHWORK.

D. Maintain subgrade in smooth, compacted condition, in conformance with the required section and established grade until the succeeding operation has been accomplished.

3.2 SETTING FORMS

A. Form Substrate:

1. Compact form substrate to uniformly support forms along entire length.

2. Correct substrate imperfections and variations by cutting, filling, and compacting.

B. Form Setting:

1. Set forms to indicated line and grade with tight joints. Rigidly brace forms preventing movement.

2. Remove forms when removal will not damage concrete and when required for finishing.

3. Clean and oil forms before each use.

4. Correct forms, when required, immediately before placing concrete.

C. Form Tolerances:

1. Variation from Indicated Line: Maximum 6 mm (1/4 inch).

2. Variation from Indicated Grade: Maximum 1/8 inch in 10 feet.

3.3 PLACING REINFORCEMENT

A. Keep reinforcement clean from contamination preventing concrete bond.

B. Install reinforcement shown on drawings.

C. Support and securely tie reinforcing steel to prevent displacement during concrete placement.

D. Obtain Contracting Officer's Representative's reinforcement placement approval before placing concrete.

3.4 JOINTS - GENERAL

A. Place joints, where shown on approved submittal Drawings.

1. Conform to details shown.

2. Install joints perpendicular to finished concrete surface.

B. Make joints straight and continuous from edge to edge of pavement.

32 05 23 - 6

3.5 CONTRACTION JOINTS

A. Tool or cut joints to width, depth, and radius edge shown on drawings using grooving tool, jointer, or saw.

B. Construct joints in curbs and gutters by inserting 1/8 inch steel plates conforming to curb and gutter cross sections.

1. Keep plates in place until concrete can hold its shape.

C. Finish joint edges with edging tool.

D. Score pedestrian pavement with grooving tool or jointer.

3.6 EXPANSION JOINTS

A. Form expansion joints with expansion joint filler of thickness shown on drawings.

1. Locate joints around perimeter of structures and features abutting site work concrete.

2. Create complete, uniform separation between structure and site work concrete.

B. Extend expansion joint material full depth of concrete with top edge of joint filler below finished concrete surface where sealant is indicated on

Drawings.

C. Cut and shape material matching cross section.

D. Anchor with approved devices to prevent displacing during placing and finishing operations.

E. Round joint edges with edging tool.

3.7 PLACING CONCRETE - GENERAL

A. Preparation before Placing Concrete:

1. Obtain Contracting Officer's Representative approval.

2. Remove debris and other foreign material.

3. Uniformly moisten substrate, without standing water.

B. Convey concrete from mixer to final location without segregation or loss of ingredients. Deposit concrete to minimize handling.

C. During placement, consolidate concrete by spading or vibrating to minimize voids, honeycomb, and rock pockets.

1. Vibrate concrete against forms and along joints.

2. Avoid excess vibration and handling causing segregation.

D. Place concrete continuously between joints without bulkheads.

E. Replace concrete with cracks, chips, bird baths, and other defects to nearest joints, approved by Contracting Officer's Representative.

32 05 23 - 7

3.8 PLACING CONCRETE FOR CURB AND GUTTER, PEDESTRIAN PAVEMENT, AND EQUIPMENT

PADS

A. Place concrete in one-layer conforming to cross section shown on Drawings after consolidating and finishing.

B. Deposit concrete near joints without disturbing joints. Do not place concrete directly onto joint assemblies.

C. Strike concrete surface to proper section ready for consolidation.

D. Consolidate concrete by tamping and spading or with approved mechanical finishing equipment.

E. Finish concrete surface with wood or metal float.

F. Construct concrete pads and pavements with sufficient slope to drain, preventing standing water.

3.9 FORM REMOVAL

A. Keep forms in place minimum 12 hours after concrete placement. Remove forms without damaging concrete.

B. Do not use bars or heavy tools against concrete to remove forms. Repair damage concrete found after form removal.

3.10 CONCRETE FINISHING - GENERAL

A. Follow operation sequence below, unless otherwise indicated on Drawings:

1. Consolidating, floating, striking, troweling, texturing, and joint edging.

B. Use edging tool with 1/4 inch radius, unless otherwise shown on Drawings.

C. Keep finishing equipment and tools clean and suitable for use.

3.11 CONCRETE FINISHING - PEDESTRIAN PAVEMENT

A. Walks, Wheelchair Curb Ramps.

1. Finish concrete surfaces with metal float, troweled smooth, and finished with a broom moistened with clear water.

2. Finish slab edges and formed transverse joints with edger.

3. Broom…