Attachment_1_2_-_00_00_01A_NGWSP_BLK_2-3_Specifications_06092026_0003.pdf

Navajo-Gallup Water Supply Project 140R4026B0001

San Juan Lateral – Block 2-3 Pipeline Solicitation No.

Table of Contents

00 01 10 - 1

SECTION C - DESCRIPTION/SPECIFICATIONS

TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

01 11 00 Summary of Work

01 12 10 Other Contracts

01 14 10 Use of Site

01 14 12 Work Restrictions and Limitations

01 31 04 Partnering

01 31 19 Project Management and Coordination

01 31 30 Contract Document Management System (CDMS)

01 32 10 Construction Program

01 33 00 Submittals

01 33 26 Electrical Drawings and Data

01 35 10 Safety Data Sheets

01 35 20 Safety and Health

01 35 30 Contractor's Onsite Safety Personnel

01 42 10 Reference Standards

01 46 00 Quality Procedures

01 46 20 Testing Agency Services

01 51 00 Temporary Utilities

01 55 00 Vehicular Access and Parking

01 55 20 Traffic Control

01 56 10 Protection of Existing Installations

01 56 15 Protection of Existing Utilities

01 56 20 Existing Fences

01 56 32 Temporary Safety Fence

01 57 20 Environmental Controls

01 57 30 Water Pollution Control

01 57 40 Pesticides

01 57 50 Tree and Plant Protection

01 57 60 Protected Species

01 57 90 Preservation of Historical and Archeological Data

01 60 00 Product Requirements

01 61 10 Buy American

01 71 20 Surveying

01 74 00 Cleaning and Waste Management

01 78 30 Project Record Documents

DIVISION 03 – CONCRETE

03 11 10 Concrete Forming

03 15 12 PVC Waterstop

03 15 18 Hydrophilic Waterstops

03 20 00 Concrete Reinforcement

00 01 10 - 2

03 30 00 Cast-in-Place Concrete

03 48 00 Precast Concrete Structures

03 62 20 Nonshrink Grout for Equipment and Metalwork

03 63 00 Epoxy Grout

DIVISION 5 – METALS

05 50 00 Metal Fabrications

DIVISION 07 - THERMAL AND MOISTURE PROTECTION

07 21 50 Spray-Applied Polyurethane Foam Insulation

07 21 60 Insulation Jacket

DIVISION 08 – OPENINGS

08 31 25 Access Hatches

DIVISION 09 – FINISHES

09 96 20 Coatings

DIVISION 10 – SPECIALTIES

10 14 26 Utility Markers

DIVISION 25 – INTEGRATED AUTOMATION

25 00 01 System Control and Monitoring

25 08 10 Automation System Testing and Acceptance

DIVISION 26 – ELECTRICAL

26 05 02 Basic Electrical Materials and Methods

26 05 10 Conductors and Cables

26 05 20 Grounding and Bonding

26 05 33 Raceways and Boxes

26 05 90 Wiring Checkout and Tests

26 24 41 Distribution Panelboards

26 27 10 Meter Socket

26 42 00 Cathodic Protection Systems

26 42 11 Buried Galvanic Anode Cathodic Protection

26 42 12 Buried Impressed Current Cathodic Protection

26 42 15 Galvanic Anode Cathodic Protection for Welded Steel Tanks

00 01 10 - 3

DIVISION 31 – EARTHWORK

31 02 10 Water for Dust Abatement

31 02 30 Dust Palliative

31 03 33 Removal and Control of Water

31 11 00 Clearing and Grubbing

31 14 10 Topsoil Stripping, Stockpiling, and Placement

31 23 02 Compacting Earth Materials

31 23 11 Earthwork for Structures

31 23 22 Pipe Trench Earthwork

31 23 39 Disposal of Excavated Waste Materials

31 23 70 Controlled Low Strength Material (CLSM)

31 24 18 Gravel Drain for Water Storage Tanks

31 31 30 Soil Applied Herbicide

31 32 36 HDPE Geomembrane for Water Storage Tanks

31 37 00 Riprap

DIVISION 32 – EXTERIOR IMPROVEMENTS

32 12 22 Asphalt Concrete Pavement

32 15 10 Gravel Surfacing

32 31 10 Chain Link Fence

32 91 60 Erosion Control Blanket

32 92 20 Seeding

DIVISION 33 – UTILITIES

33 05 21 Bored Crossings

33 05 23 Maintained and Un-Maintained Road Crossings

33 11 10 Pipeline General Requirements

33 11 12 Steel Line Pipe

33 11 13 Ductile Iron Pipe

33 11 16 PVC Pressure Pipe

33 11 17 PVC Gravity Drain for San Juan Lateral Water Treatment

Plant Regulating Tanks

33 11 18 HDPE Pressure Pipe

33 11 50 Pipe Crossing at Existing Utility Pipelines

33 12 15 Valves and Equipment for Line Pipe Installations

33 16 00 Water Storage Tanks

33 16 50 Steel Tanks

33 16 51 Concrete Wire Wrapped Tank

33 16 52 Concrete Prestressed Tank

33 21 95 Metal Piping for Line Pipe Installations

33 42 30 Corrugated Metal Pipe Culverts

00 01 10 - 4

DIVISION 35 -WATERWAY AND MARINE CONSTRUCTION

35 21 95 Steel Manifold Piping

35 22 14 Valves and Equipment

35 42 35 Wash Crossing Bank Protection

DIVISION 51 – INFORMATION AVAILABLE TO OFFERORS

51 00 00 Information Available to Offerors

51 00 35 Site Specific Revegetation Plan

51 00 40 NTUA – Markers

51 00 42 NTUA Waterline Relocation Requirements

51 00 45 Weathers Property Water Sample Results

51 00 50 Electronic Media Release

51 00 70 BLM Herbicides

51 02 83 Hazardous Materials Survey and Analytical Results

DIVISION 52 – DRAWINGS

52 00 00 Drawings

DIVISION 53 - GEOLOGIC INVESTIGATIONS AND RECORDS

53 10 00 Geologic Investigations

53 15 00 Geotechnical Recommendations

53 20 00 Records of Geologic and Subsurface Investigations

END OF CONTENTS

Pipeline General Requirements

33 11 10 - 1

SECTION 33 11 10

PIPELINE GENERAL REQUIREMENTS

PART 1 GENERAL

1.01 MEASUREMENT AND PAYMENT

A. Line Pipe (Reach 2), 48-Inch Line Pipe (Reach 3), and 42-Inch Line Pipe (Reach 3):

1. Measurement: Horizontally along pipe centerline, without allowance for slope, between ends of pipe in place. Continuous through fittings, outlets, wash crossings, casing pipes, end collars, thrust restraints, and road crossings with no allowance for lap at joints:

a. Measurement for pipe from pipe outlets will begin at downstream face of valve or flange.

2. Payment: Linear foot prices offered in Price Schedules:

a. Includes cost of the following:

1) Pipe trench excavation in accordance with Section 31 23 22 – Pipe

Trench Earthwork.

2) Furnishing and placing materials, including but not limited to the following:

a) Fittings, bedding, embedment, utility markers, concrete, reinforcing steel, blocking and collars, not included elsewhere.

b) Asphalt concrete pavement.

c) Laying pipe.

3) Connections of Line Pipe to existing Horizontal Directionally

Drilled (HDD) Pipe, and existing Steel Manifold Piping at

Pumping Plant No. 1 and San Juan Lateral Water Treatment Plant

Regulating Tanks.

a) Construct pipe connections as restrained pipe lengths between Line Pipe and existing HDD Pipe and Steel

Manifold Piping.

b) Different pipe materials may exist between Line Pipe and existing HDD Pipe and Steel Manifold Piping. Connections must accommodate different pipe materials.

c) A miter bend, at each end of existing HDD Pipe, to transition from HDD Pipe slope to Line Pipe slope as constructed.

4) Carrier Pipe for Bored Crossings.

33 11 10 - 2

b. Does not include:

1) Steep pipe.

2) Installation of Bored Crossings.

3. Linear foot price shall be an average price of pipe pressure class shown on drawings.

B. Steep Line Pipe (Reach 2):

1. Measurement: Horizontally along pipe centerline, without allowance for slope, between ends of pipe in place. Continuous through fittings, outlets, wash crossings, casing pipes, end collars, thrust restraints, anchor blocks and road crossings with no allowance for lap at joints:

2. Payment: Linear foot prices offered in Price Schedule 1:

a. Includes cost of the following:

1) Pipe trench excavation in accordance with Section 31 23 22 – Pipe

Trench Earthwork.

2) Furnishing and placing materials, including but not limited to the following:

a) Fittings, bedding, embedment, utility markers, concrete, reinforcing steel, blocking and collars, not included elsewhere.

b) Laying pipe.

3) Does not include rock excavation.

3. Linear foot price shall be an average price of pipe size and pressure class shown on drawings.

C. Filling and Testing Pipe:

1. Payment: Lump sum prices offered in Price Schedules.

a. Includes: One pipe volume of water used for filling and testing or as approved by COR.

b. Additional water required for flushing and testing is at Contractor’s expense.

D. Repair Kits:

1. Payment: Lump sum prices offered in Price Schedules.

E. NTUA 4-inch Waterline Relocation:

1. Measurement: Horizontally along pipe centerline,

2. Payment: Linear foot prices offered in Price Schedule 2:

a. Includes the cost of the following:

33 11 10 - 3

1) Pipe trench excavation in accordance with Section 31 23 22 – Pipe

Trench Earthwork.

2) Removal and disposal of existing waterline.

3) Furnishing and re-placing materials, including but not limited to the following:

a) Isolation valves, fittings, bedding, embedment.

b) Laying pipe.

4) Disinfection of installed pipeline, in accordance with 51 00 42 -.

NTUA Waterline Relocation Requirements.

1.02 DEFINITIONS

Piping Types

Material Size

(Inch)

Location Specification Drawings

PVC, HDPE,

Ductile Iron, or

Steel

Greater than 36-inches

Line Pipe As per material type.

Steel only 36-inches and less

Assembly Piping and Vaults

33 21 95 – Metal

Piping for Line Pipe

Installations

60798, 60799, 60800, 60801, 60802, 60804, and

60812

A. Line Pipe:

1. Water transmission pipe.

2. Unless otherwise specified, does not include piping for appurtenances such as blowoffs, air valves, or manholes.

3. Includes pipe from:

a. Reach 2:

1) Start of Reach 2 (2002+00) to start of Shumway Arroyo HDD,

2) End Shumway Arroyo HDD to Start of San Juan River HDD,

3) End of San Juan River HDD to start of Pumping Plant No. 1,

4) End of Nenahnezad Bluff HDD to end of Reach 2 (2287+67.49).

b. Reach 3:

1) Start of Reach 3 (3302+00) to Chaco River HDD,

2) End of Chaco River HDD to end of Reach 3 (3744+56.27).

B. Horizontal Directionally Drilled (HDD) Pipe:

1. Previously installed water transmission pipe, by others.

33 11 10 - 4

C. Pipe sizes and classes: Line Pipe is designated on plan and profile drawings by an alphanumeric symbol:

1. Symbol identifies pipe diameter, cover class and hydraulic transient head as follows:

a. First number in symbol indicates nominal diameter in inches.

b. Alphabetic character represents cover class of pipe where; B < 10 feet, C

< 15 feet, and D < 20 feet:

1) K Class pipe: Metallic pipe with a special design at locations shown on the drawings:

a) Joints shall be butt welded if steel pipe is used.

b) Joints shall be restrained if ductile iron is used.

c. Second number in symbol is maximum hydraulic transient head measured to centerline of pipe.

d. A symbol of 42C600 means pipe is 42-inches in diameter with a cover between 10- and 15-feet and a hydraulic transient head of 600-feet at centerline of pipe.

2. Unless specific reference is made to outside or inside diameter of pipe, pipe diameters shown on drawings and used in this section are nominal pipe diameters.

D. Metal Piping for Line Pipe Installations:

1. In accordance with Section 33 21 95 – Metal Piping for Line Pipe Installations:

a. Piping in vaults, turnouts, or piping for appurtenances such as blowoffs, bypasses, air valves or manholes including air vent piping in manholes.

b. Includes, buried manholes, outlets, and associated flanges from the line pipe to which metal piping for line pipe is attached.

E. Steel Manifold Piping:

1. In accordance with Section 35 21 95 – Steel Manifold Piping:

a. Piping in San Juan Lateral Water Treatment Plant Regulating Tanks site.

1.03 REFERENCE STANDARDS

A. ASTM International (ASTM)

1. ASTM C150/C150M-17 Portland Cement

2. ASTM F2164-13 Field Leak Testing of Polyethylene (PE) and

Crosslinked Polyethylene (PEX) Pressure

Piping Systems using Hydrostatic Pressure.

B. American Water Works Association (AWWA)

33 11 10 - 5

1. AWWA C205-12 Cement-Mortar Protective Lining and

Coating for Steel Water Pipe – 4 In.

(100mm) and Larger - Shop Applied

2. AWWA C600-10 Installation of Ductile Iron Water Mains and

Their Appurtenances

3. AWWA C604-11 Installation of Steel Water Pipe 4 In.

(100mm) and Larger

4. AWWA C605-13 Underground Installation of Polyvinyl

Chloride (PVC) and Molecularly Oriented

Polyvinyl Chloride (PVCO) Pressure Pipe and Fittings

C. International Organization for Standardization (ISO)

1. ISO 9001-15 Quality Management

D. National Sanitation Foundation (NSF)

1. NSF Standard 61-16 Drinking Water System Components -

Health Effects

1.04 SUBMITTALS

A. Submit the following in accordance with Section 01 33 00 – Submittals:

B. RSN 33 11 10-1, Qualifications:

1. Certification of line pipe layers (Foreman).

2. Certification of line pipe and fitting manufacturers.

3. Certification of NSF 61 compliance of line pipe materials.

C. RSN 33 11 10-2, -3, -4, -5, Pipelaying Diagrams:

1. RSN 33 11 10-2, Reach 2, Start of Reach 2 to Start of San Juan River HDD.

2. RSN 33 11 10-3, Reach 2, End of San Juan River HDD to end of Reach 2.

3. RSN 33 11 10-4, Reach 3, Start of Reach 3 to Start of Chaco River HDD.

4. RSN 33 11 10-5, Reach 3, End of Chaco River HDD to end of Reach 3.

a. Submit each reach in sections, not to exceed 5-miles, after utility crossing investigation and wash crossing field information has been submitted and approved for that section:

1) If additional sections and/or reaches are submitted within 21-days, Government will require an additional 21-days for review of each additional section.

b. Submit concurrently with applicable corresponding RSN in the following

Sections:

33 11 10 - 6

1) 33 11 12 – Steel Line Pipe, RSN 33 11 12-2 through RSN 33 11

12-5.

2) 33 11 13 – Ductile Iron Pipe, RSN 33 11 13-1 through RSN 33 11

13-4.

3) 33 11 16 – PVC Pressure Pipe, RSN 33 11 16-1 through RSN 33

11 16-4.

4) 33 11 18 – HDPE Pressure Pipe, RSN 33 11 18-2 through RSN 33

11 18-5.

5) 33 21 95 – Metal Piping for Line Pipe Installations, RSN 33 21 95-

1 through RSN 33 21 95-4.

c. For each type of pipe furnished.

d. Show position and marking of pipe sections.

e. Include centerline and invert stationing and elevations at horizontal and vertical changes in alignment, and subgrade elevation for each pipe segment and fitting.

f. Include pipe thickness, Dimension Ratio (DR) or pressure class of pipe segment or fitting.

g. For alignment changes not using a miter bend (pulling joints) provide station at point of curvature and point of tangent, and deflection angle at each pulled joint.

h. Fittings or insulating flange gasket kit used to isolate dissimilar metals.

D. RSN 33 11 10-6, Filling and Testing Plan:

1. Proposed rate, time, and procedure for:

a. Cleaning.

b. Filling.

c. Field and pressure testing.

d. Draining pipeline.

2. Method for disposing of water drained from pipeline to enable repair of leaks.

3. Leak testing equipment and data sampling plan.

E. RSN 33 11 10-7, Flotation Prevention Plan:

1. Show location and describe method of preventing pipe from floating.

2. Provide supporting calculations.

F. RSN 33 11 10-8, Pipe Deflection Measurements.

G. RSN 33 11 10-9, NTUA Waterline Relocation Work Plan:

33 11 10 - 7

1. Show position and marking of pipe sections.

2. Include centerline and invert stationing and elevations at horizontal and vertical changes in alignment, and subgrade elevation for each pipe segment and fitting.

1.05 DELIVERY, STORAGE, AND HANDLING

A. Ship pipe after receiving COR approval as per Section 2.03 – Source Quality Assurance.

B. Prevent damage to pipe and fittings during loading, transporting, unloading, storing, and laying.

C. Transport metallic pipe and fittings on padded bolsters curved to fit outside of pipes. Use heavy padding under ties.

D. Tightly close open ends of shop-applied, cement-mortar-lined pipe with plastic wrap for protection of cement-mortar lining during shipment:

1. Plastic Wrap:

a. At least 2 thicknesses of 6-mil sheet polyethylene plastic.

b. Remain on pipe until installation.

E. Support and store pipe above ground surface. Do not allow bells and spigots to contact each other or the ground.

F. Government will inspect pipe once it is delivered.

G. Replace or repair, as approved by COR, any pipe that is damaged during shipment, storage, or installation at Contractor’s expense. Include linings and coatings.

1.06 QUALIFICATIONS

A. Pipe manufacturers shall be certified in accordance with ISO:9001 or similar nationally certified program approved by COR.

B. Line pipe and specials manufacturers:

1. 10-years successful experience producing products as specified.

2. Provide references for at least 3 completed projects with similar pipe diameters

(within 12-inches) and pressures.

C. Pipe Layers: Skilled and experienced in laying pipe with joints as needed for each material type of pipe used. Minimum 2-years installing pipe with similar pipe diameters

(within 12-inches), pipe material, and pressures:

1. In the absence of specific pipe material experience, substitution of onsite pipe manufacturer training and quality control is allowed:

33 11 10 - 8

a. Provide manufacturer’s representative certified in pipeline installation, including all applicable joints, for training pipe layers and pipe foreman prior to installation.

b. In lieu of specific pipe material installation experience, pipe layers and pipe foreman shall still have experience with installing similar pipe diameters and pressures.

D. Qualify welding procedures and welders in accordance with code under which welding is specified.

1.07 REPAIR KITS

A. Furnish 1 repair kit for each material type and size of pipe used.

B. Repair kit:

1. One standard length of pipe and 2 restrained couplings.

2. At highest loading and pressure rating for each material type and nominal size of pipe provided.

C. Place repair kits in storage within 150-miles from site, as designated by COR.

PART 2 PRODUCTS

2.01 PIPE OPTIONS

A. In accordance with the following Sections:

1. 33 11 12 – Steel Line Pipe,

2. 33 11 13 – Ductile Iron Pipe,

3. 33 11 16 – PVC Pressure Pipe,

4. 33 11 18 – HDPE Pressure Pipe.

B. Locations:

1. Reach 2:

a. HDPE Pressure Pipe allowed with pipe head class 275 or less.

b. PVC Pressure Pipe allowed with pipe head class 350 or less.

c. Metallic Pipe required for pipe head class above 350.

2. Reach 3:

a. HDPE Pressure Pipe allowed with pipe head class 275 or less.

b. PVC Pressure Pipe allowed with pipe head class 350 or less.

c. Metallic Pipe required for pipe head class above 350.

33 11 10 - 9

C. No more than one metallic line pipe type and one non-metallic line pipe type may be used, except as shown on drawings.

D. Materials and chemicals that may come into contact with drinking water shall be certified by NSF 61.

E. Rubber Gaskets:

1. Manufactured and tested in accordance with applicable AWWA standard for pipe type.

2. Petroleum-Resistant Gaskets: Use in pipe joints in accordance with Section 33 11

50 – Pipe Crossings at Existing Utility Pipelines.

3. Lubricant: Approved for potable water use.

F. Transitions between differing pipe materials:

1. Transitions between HDPE and PVC are not allowed.

2. All transitions between line pipe materials shall be fully restrained.

3. Steel:

a. In accordance with 33 11 12 – Steel Line Pipe.

b. Allowable connection types:

1) Mechanical Joint: Series 1100 manufactured by Ebaa Iron Inc., www.ebaa.com or equal.

2) Flanged.

4. Ductile Iron:

a. In accordance with 33 11 13 – Ductile Iron Pipe.

b. Allowable connection types:

1) Mechanical Joint: Series 1100 manufactured by Ebaa Iron Inc., www.ebaa.com or equal.

2) Restrained Flange Adapter: Series 2100 manufactured by Ebaa

Iron Inc., www.ebaa.com or equal.

5. PVC:

a. In accordance with 33 11 16 – PVC Pressure Pipe.

b. Allowable connection types:

1) Mechanical Joint: Series 2200 manufactured by Ebaa Iron Inc., www.ebaa.com or equal.

6. HDPE:

a. In accordance with 33 11 18 – HDPE Pressure Pipe.

b. Allowable connection types:

http://www.ebaa.com/ http://www.ebaa.com/ http://www.ebaa.com/ http://www.ebaa.com/

33 11 10 - 10

1) Flanged with backing ring.

2.02 FITTINGS

A. Fittings should resist same loading conditions as adjacent pipe.

B. Refer to applicable line pipe section for allowed fittings.

C. Each transition between the Line Pipe and HDD Pipe shall have a miter bend installed to align the pipeline to create a continuous segment.

1. The miter bends and connections shall be in accordance with the appropriate

Section below, based upon the HDD and Line Pipe material at each location:

a. 33 11 12 – Steel Line Pipe,

b. 33 11 13 – Ductile Iron Pipe,

c. 33 11 16 – PVC Pressure Pipe,

d. 33 11 18 – HDPE Pressure Pipe.

2. At the extreme ends of the miter bends, either:

a. A thrust block, with two restrained flexible couplings and a 10-foot articulating pipe segment between the couplings shall be installed on each end of the Line Pipe to allow for a flexible connection to the HDD Pipe, or

b. Restrain pipe joints, if allowed, as shown on drawings.

D. Fittings and connections used to connect HDD Pipe to Line Pipe shall conform to Section

33 11 10 – Pipeline General Requirements. Transitions are required to connect pipes with material, diameter, and wall thickness differences.

E. Fittings and connections used to connect to Pumping Plant 1 shall conform to Section 33

11 10 – Pipeline General Requirements. Transitions are required to connect pipes with material, diameter, and wall thickness differences.

F. Fittings and connections used to connect to manifold piping at the San Juan Lateral Water

Treatment Plant Regulating Tanks shall conform to Section 33 11 10 – Pipeline General

Requirements. Transitions are required to connect pipes with material, diameter, and wall thickness differences.

2.03 NTUA WATERLINE

A. Replace per NTUA Requirements, in accordance with Section 51 00 42 – NTUA

Waterline Relocation Requirements, Section 3. Re-route around San Juan Lateral

Regulating Tank Site as shown on Drawing 1695-D-60809.

2.04 SOURCE QUALITY ASSURANCE

A. Approval for Shipment:

33 11 10 - 11

1. Pipe and fitting approval will be determined by inspection, during and after manufacture.

2. Notify Technical Service Center, Attn: 86-68140, and COR at least 14-days before manufacturing pipe and fittings and 3-days before shipping pipe and fittings.

3. Government will inspect pipe units and fittings and will approve for shipment those which have been manufactured and tested in accordance with these specifications, unless Contractor is notified in writing.

4. Further inspection of pipe units and fittings will be in accordance with clause at

FAR 52.246-12 Inspection of Construction.

2.05 PIPE ACCESSORIES

A. Sectionalizing Valve, Air Valve, and Blowoff Assemblies: In accordance with Section

33 12 15 – Valves and Equipment for Line Pipe Installations.

B. Buried Manhole Assemblies:

1. In accordance with Section 03 48 00 – Precast Concrete Structures.

2. Cement-mortar lining: AWWA C205, in accordance with shop applied mortar for lining of specials, except:

a. Reinforcement required for pipe larger than 24-inch diameter.

b. Cement: ASTM C150, Type V.

3. Required at locations shown on drawings.

C. Warning Tape:

1. Polyethylene tape.

2. Thickness: 4 mils.

3. Magnetically detectable.

4. Width, minimum: 6-inches.

5. Color: Blue with silver lettering.

6. Legend repeated at least every 3-feet: “CAUTION: WATERLINE BURIED

BELOW - FOR MORE INFORMATION CONTACT THE NAVAJO TRIBAL

UTILITY AUTHORITY”.

D. Tracer Wire for Non-Metallic Pipe:

1. Type: High strength copper clad steel.

2. Size: 10 AWG, minimum.

3. Insulation:

a. High density, high molecular weight, polyethylene (HDPE).

33 11 10 - 12

b. Jacket Color: Blue.

c. Rated for direct burial.

E. Tracer Wire Terminal Post:

1. Designed and manufactured for specific application.

2. Temperature and ultraviolet light stable.

3. Color: Blue.

4. Terminals: Two, minimum, per post.

5. Provide terminal jumpers to interconnect lengths of trace wire as needed.

6. Space as recommended by manufacturer.

PART 3 EXECUTION

3.01 GENERAL

A. Perform cleaning, filling, and testing after backfill has been placed to finished grade or as approved by OGR.

B. Responsible Surveyor licensed in State of New Mexico or a certified Construction

Surveyor, as defined in and in accordance with Section 01 71 20 – Surveying, shall be onsite during excavation and pipelaying.

C. Protect pipe from contamination, damage, and elements during storage on-site by covering with tarp as directed by OGR.

D. Install pipe based on these specifications or pipe manufacturer’s recommendation, whichever is more stringent.

E. Isolate dissimilar metals.

3.02 INSTALLATION

A. Install pipe in accordance with appropriate Section for pipe option installed.

B. Keep openings to installed pipe closed with watertight inflatable plugs during work stoppage, including end of work day, breaks, and work delays.

C. If pipe is flooded during construction, clear floodwater by draining and flushing with water, or other approved method, until pipe is clean.

D. Lubricant:

1. Keep clean.

2. Apply with dedicated, clean applicator brushes.

33 11 10 - 13

3. Apply lubricant as specified by pipe manufacturer:

a. Use only lubricant supplied by pipe manufacturer.

b. Lubricate spigot end of pipe as recommended by manufacturer.

c. Do not lubricate either gasket or gasket groove in bells where gaskets are field installed.

d. Lubricate factory-installed, non-removable-type gaskets as recommended by pipe manufacturer.

E. Coat buried manholes with cement mortar as shown on drawings.

F. Install tracer wire for non-metallic pipe.

G. Install warning tape over center of pipe at least 18-inches below ground and at least

18-inches above pipe.

3.03 LAYING PIPE

A. Excavate pipe trench in accordance with Section 31 23 22 – Pipe Trench Earthwork.

1. Grade pipe trenches to provide uniform slope along bottom of pipe.

2. At joints involving bells or collars, provide holes at joint of ample size to prevent bells or collars from coming in contact with subgrade and to allow for bedding placement.

B. Keep pipe trenches free of water during pipelaying operations.

C. Lower pipe into trench and place pipe in position such that no soil gets inside pipe and pipe is not damaged.

D. Install pipe to line and grade as shown on drawings and approved lay diagrams.

E. On grades exceeding 10 percent, lay pipe uphill.

F. When pipelaying is not in progress, keep ends of pipelines closed with watertight inflatable plugs.

G. Joining Pipe:

1. Assemble push-on or mechanical joints in accordance with applicable AWWA standard for pipe type and manufacturer’s recommendations.

2. If adjustment of the position of length of pipe is required after installation, remove and relay length of pipe as new pipe.

3. Maintain pipe firmly in final position.

4. Placing Elastomeric Gasket:

a. Clean gasket, bell, especially the groove, and spigot with rag, brush, or paper towel to remove any dirt or foreign material.

b. Use only gaskets which are designed for and supplied with pipe.

33 11 10 - 14

c. Lubricate pipe as recommended by manufacturer.

d. Spigot Groove Method:

1) Follow manufacturer’s recommended practices for gasket installation.

2) After placing elastomeric gasket in spigot groove, equalize elastomeric gasket cross section by inserting tool such as a large screwdriver under elastomeric gasket and moving it around periphery of pipe spigot.

e. Coupling Groove Method: Follow manufacturer’s recommended practices for gasket installation. Typically, factory installed.

5. Fit pipe unit’s together, spigot to bell or coupling, and draw joints together so that bells or couplings and spigots are fully engaged with uniform contact to gasket.

6. Do not swing or "stab" joint and do not suspend pipe and swing into bell or coupling.

7. Fit pipe units together in a manner to avoid twisting or otherwise displacing or damaging elastomeric gasket.

8. After joining pipe units, insert feeler gauge between pipe bell and pipe spigot, move it around periphery of pipe to determine that position of elastomeric gasket is correct and there are no fish-mouth problems. If adjustment of position of a length of pipe is required after installation, remove and relay length of pipe as new pipe.

H. Changes in Alignment and Grade:

1. Make changes in alignment and grade with miter bends as shown on drawings.

2. Make other minor changes in alignment and grade by providing small deflections between adjacent pipe:

a. Do not exceed manufacturer’s deflection tolerances.

b. Pipelaying diagrams shall only deflect joints no more than 50-percent of manufacturer’s maximum deflection tolerances.

3. Provide restrained joint lengths upstream and downstream of bends or thrust blocks as shown on drawings. Ductile iron fittings with restrained joint lengths as limited by drawings may be used if Contractor submits revised plan and profile drawings for approval.

4. Do not encase rubber gasket joints in concrete.

5. Refer to individual pipe Sections for additional requirements. If requirements conflict, use most stringent requirement.

I. After pipelaying and joining operations are completed, clean inside of pipe and remove debris.

33 11 10 - 15

J. Schedule work so that at no time pipe remains in trench more than 7-days before backfill is placed to original ground surface or to other specified backfill limits shown on drawings.

K. Joints under Maintained and Unmaintained Road Crossings, and Wash Crossing banks and waterway shall be restrained for length shown on drawings. Joints shall have hoop stress and longitudinal stress capacity equal to or greater than adjacent pipe.

3.04 THRUST RESTRAINT

A. Restrained joint couplings or concrete blocking and collars as shown on drawings. Refer to Section 03 30 00 – Cast-in-Place Concrete and in accordance with applicable sections listed in 2.01.A.

B. Plan, profile, and restraint system shown on drawings require modification if alternate methods are used.

C. Alternate methods of restraint may not be used unless submitted and approved by COR.

3.05 TRACER WIRE

A. Install continuous length of tracer wire for full length of each run of non-metallic pipe, B. Attach wire to top of pipe using suitable methods to ensure tracer wire will not be displaced during construction operations.

C. Locate tracer wire terminal posts at suitable locations to provide testing and/or jumper points for entire length of non-metallic pipe.

D. Verify tracer wire continuity prior to performing backfill operations.

3.06 BACKFILL

A. Backfill pipe in accordance with Section 31 23 22 – Pipe Trench Earthwork:

1. Place backfill about pipe carefully to avoid lateral displacement of pipe and damage to joints.

2. In certain pipeline reaches, where determined necessary by COR to prevent possibility of flotation, do not lay more than 300-linear feet of pipe ahead of backfilling operations.

3. If pipelaying operations are interrupted for more than 24-hours, cover pipe laid in trench with backfill.

3.07 PIPE DIAMETER DEFLECTION

A. For pipe greater than 24-inches:

1. Measure short term deflection of internal diameter:

33 11 10 - 16

a. Within 2-weeks after completion of backfill.

b. When interior bracing required, remove before making measurements.

2. Measurement Frequency:

a. One pipe unit out of 3 for first 30 units laid. 1 pipe unit out of

10 thereafter.

b. In deep burial or problem areas, frequency of measurements may be increased at discretion of COR.

3. Measurements:

a. Measure vertical and horizontal diameter at approximate midpoint of pipe unit.

b. Record pipe deflections and station where measurements were taken.

c. Mark inside of pipe so that future comparisons can be made.

B. Deflection limitations apply per individual pipe sections.

C. Take corrective action if required limits are not meet, including removing and replacing pipe that exceeds allowable deflection tolerance.

3.08 FIELD EXAMINATION

A. Flush pipe before filling.

1. Flush foreign material from pipeline prior to testing.

2. Flush using a minimum velocity of 3-feet per second toward low points in reach.

3. Flush minimum of 1 pipe volume until water is clean or approved by OGR.

4. Dispose of flush water in accordance with permits in Section 01 57 30 – Water

Pollution Control.

5. Operate valves several times during flushing period.

3.09 FILLING AND DRAINING PIPELINE

A. Notify COR 4 days before filling and testing.

B. Water for filling and testing pipeline in accordance with Section 01 51 00 – Temporary

Utilities.

C. Pipeline fill rate, maximum: 2 cubic feet per second.

D. Maintain pipeline completely filled for at least 72-hours before testing.

E. Dispose of testing water by approved method.

33 11 10 - 17

3.10 DISINFECTION

A. Disinfect NTUA 4-inch waterline in accordance with Section 51 00 42 – NTUA

Waterline Relocation Requirements, Section TP-3.11.

3.11 CONTRACTOR FIELD QUALITY TESTING

A. Leak testing pipeline:

1. Notify COR at least 7-days before applying pressure to pipeline.

2. Do not start leak testing when snow or standing water is on the ground. Suspend testing as directed by OGR if precipitation accumulates on the ground.

3. Furnish pumps, power, pressure gages, calibrated flow meters and air valves as needed each end of pipeline test segment, including through the San Juan Lateral

Water Treatment Plant Regulating Tanks site. Contractor may utilize water storage tanks to maintain pressure during testing.

4. Comply with applicable test standard except as noted below:

a. AWWA C605 for PVC.

b. AWWA C600 for Ductile Iron.

c. AWWA C604 for Steel.

d. AWWA C906 and M55 for HDPE.

5. Test pipeline with hydrostatic pressure equal to hydraulic grade line elevations listed for each Reach segment:

a. Reach 2;

1) Upstream of Pumping Plant No. 1: Elevation 5,280 feet.

2) Downstream of Pumping Plant No. 1: Elevation 5,460.9 feet.

b. Reach 3; Elevation 5,460.9 feet.

c. Test Segment: Each pipe segment between sectionalizing valves.

d. First test segment: Between start of Reach 2 pipeline and first sectionalizing valve.

e. Last test segment: From last sectionalizing valve and end of Reach 3 pipeline.

f. Manifold pipe for the San Juan Lateral Water Treatment Plant Regulating

Tanks to be tested with the connecting line pipe.

g. Sectionalizing valves shall be removed for testing unless test pressures are less than rated pressure for valve.

6. Prior to starting test, maintain pressure in pipe for 24-hours.

7. Test for 96-hours or as approved by COR.

8. Measure volume of water required to maintain pressure during test:

33 11 10 - 18

a. Acceptance criteria:

1) Zero leakage:

a) Test using digital gauge with data logger.

b) Test pressure shall not drop by more than 5 psi during test period.

c) Repair any pipeline leakage detectable by any means as approved by COR.

b. If criteria are not met, repair or replace pipe or fitting and repeat test until acceptance criteria is achieved.

9. Drain pipe using both gravity flow and sump pump at blowoffs or as approved by

COR.

10. Seal openings to pipe as approved by COR.

B. Pipeline leakage discovered after leak testing:

1. Repair any pipeline leakage detectable by any means as approved by COR.

2. Retest pipeline test segment containing repair to prove zero leakage at test pressure for 96-hours.

C. Locate tracer system testing:

1. Perform test of tracer wire system using applicable equipment along entire length of pipe to ensure proper performance.

2. Repair any identified breaks or separations and retest applicable section of system.

END OF SECTION

Concrete Wire Wrapped Tank

33 16 51 - 1

SECTION 33 16 51

CONCRETE WIRE WRAPPED TANK

PART 1 GENERAL

1.01 MEASUREMENT AND PAYMENT

A. Cost:

1. Include cost of furnishing and installing concrete wire wrapped tank in price offered in Price Schedule 2 for San Juan Lateral Water Treatment Plant

Regulating Tanks.

a. Includes:

1) Designing and installing, tank, tank foundation, ladders, railings, pipes, fittings, and accessories.

2) Waterstops.

3) PVC Gravity Drain for San Juan Lateral Water Treatment Plant

Regulating Tanks.

4) Providing tank testing and associated equipment testing.

1.02 REFERENCE STANDARDS

A. American Concrete Institute (ACI)

1. ACI 350-20 Building Code Requirements for

Environmental Engineering Concrete

Structures

2. ACI 350.1-22 Tightness Testing of Environmental

Engineering Concrete Containment

Structures and Commentary

3. ACI 350.3-20 Seismic Design of Liquid-Containing

Concrete Structures and Commentary

4. ACI 372R-13 Design and Construction of Circular Wire-and Strand-Wrapped Prestressed Concrete

Structures

5. ACI 506R-16 Guide to Shotcrete

6. ACI 506.2-13(18) Shotcrete

B. ASTM International (ASTM)

1. ASTM A185/A185M-07 Steel Welded Wire Reinforcement, Plain, for Concrete

2. ASTM A227/A227M-17 Steel Wire, Cold-Drawn for Mechanical

Springs

33 16 51 - 2

3. ASTM A416/A416M-18 Steel Strand, Uncoated Seven-Wire for

Prestressed Concrete

4. ASTM A421/A421M-21 Uncoated Stress-Relieved Steel Wire for

Prestressed Concrete

5. ASTM A475-03(2020) Zinc-Coated Steel Wire Strand

6. ASTM A497/A497M-07 Steel Welded Wire Reinforcement, Deformed, for Concrete

7. ASTM A586-18 Zinc-Coated Parallel and Helical Steel Wire

Structural Strand

8. ASTM A603-19 Zinc-Coated Steel Structural Wire Rope

9. ASTM A615/A615M-15a Deformed and Plain Carbon-Steel Bars for

Concrete Reinforcement

10. ASTM A648-18 Steel Wire, Hard-Drawn for Prestressed

Concrete Pipe

11. ASTM A653/A653M-20 Steel Sheet, Zinc-Coated (Galvanized) or

Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process

12. ASTM A722/A722M-18 Uncoated High-Strength Steel Bars for

Prestressing Concrete

13. ASTM A821/A821M-21 Steel Wire, Hard-Drawn for Prestressed

Concrete Tanks

14. ASTM A882/A882M-20 Filled Epoxy-Coated Seven-Wire

Prestressing Steel Strand

15. ASTM A1008/A1008M-21a Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-

Strength Low-Alloy with Improved

Formability, Solution Hardened, and Bake

Hardenable

16. ASTM A1064/A1064M-18a Carbon-Steel Wire and Welded Wire

Reinforcement, Plain and Deformed, for

Concrete

17. ASTM C881/C881M-20a Epoxy-Resin-Base Bonding Systems for

Concrete

18. ASTM D1056-20 Flexible Cellular Materials-Sponge or

Expanded Rubber

19. ASTM D1752-18 Preformed Sponge Rubber Cork and

Recycled PVC Expansion Joint Fillers for

Concrete Paving and Structural Construction

20. ASTM D2000-18 Standard Classification System for Rubber

Products in Automotive Applications

33 16 51 - 3

21. ASTM D2240-15(2021) Standard Test Method for Rubber Property:

Durometer Hardness

C. American Water Works Association (AWWA)

1. AWWA D110-13(R18) Wire- and Strand-Wound, Circular, Prestressed Concrete Water Tanks

D. Code of Federal Regulations

1. 29 CFR 1910.27 Fixed Ladders

E. International Building Code (IBC)

1. IBC-12 International Building Code

F. Post Tensioning Institute (PTI)

1. PTI DC10.7-83 Post-Tensioned Commercial and Industrial

Floors

2. PTI TAB.1-06 Post-Tensioning Manual, Sixth Edition

3. PTI DC20.8-04 Design of Post-Tensioned Slabs Using

Unbonded Tendons

4. PTI M10.2-00 Specification for Unbonded Single Strand

Tendons

5. PTI M10.3-00 Field Procedures Manual for Unbonded

Single Strand Tendons

6. PTI M50.3-12 Specification for Grouting of Post-

Tensioned Structures

7. PTI CRT20 Manual for Certification of Plants Producing

Unbonded Single Strand Tendons, Sixth

Edition.

1.03 SUBMITTALS

A. Submit the following in accordance with Section 01 33 00 – Submittals.

B. RSN 33 16 51-1, Approval Drawings and Data:

1. Shop drawings, show details:

a. Used in fabrication of tank components and tank construction.

b. Show details that shall be used in the preparation of the tank foundation.

c. Show details that shall be used in the layout of the tank foundation drain.

2. Manufacturer’s installation instructions.

3. Tank surface finishes and coating materials.

4. Concrete design mixes, including shotcrete.

33 16 51 - 4

5. Structural design calculations or analyses sealed by registered professional engineer in the State of New Mexico.

6. Provide 2- by 2-foot area of shotcrete finishes to be used as the standard for acceptance of installed construction.

C. RSN 33 16 51-2, Test Reports:

1. Submit certified mill test reports indicating ultimate and yield strength of all reinforcing bars, prestressing and post tensioning steel, and any other steel components.

D. RSN 33 16 51-3, Documentation:

1. Furnish applicable "Affidavits of Compliance" to building codes.

E. RSN 33 16 51-4, Final Drawings and Data:

1. Submit final drawings and data consisting of approved detailed shop drawings.

2. Submit Operation and Maintenance Manuals.

F. RSN 33 16 51-5, Qualifications:

1. ACI Nozzleman certification.

1.04 DESIGN REQUIREMENTS

A. Tank:

1. Refer to Section 33 16 00 – Water Storage Tanks.

2. Design one of the following in accordance with ACI 350, and AWWA D110:

a. Type I: Cast-In-Place Concrete with Vertical Prestressed Reinforcement.

b. Type II: Shotcrete with a Steel Diaphragm.

c. Type III: Precast Concrete with Steel Diaphragm.

3. Design foundation/floor slab for single concrete placements, no joints are allowed.

4. Foundation/floor slab design shall take into account concentrated loads from the roof column supports.

5. Perimeter wall shall be wire-wound and vertically prestressed as applicable. If cast in place, full-height placements not to exceed 75-feet in length.

6. Design core wall for initial compressive forces applied by prestressing and other applicable loadings.

7. Tank foundation drain to be installed under tank foundation/floor slab. See

Drawing 1695-D-62473.

B. Foundation/Floor Slab:

33 16 51 - 5

1. Refer to Section 33 16 00 – Water Storage Tanks.

2. Refer to Section 31 23 11 – Earthwork for Structures for subgrade conditions.

C. Design for earthquake resistance based on ACI 350.3 and requirements of AWWA D110.

D. Base design on AWWA D110 and ACI 350 load combinations, with basis for loadings as defined herein:

1. Load combinations for prestressed or post-tensioned items: In accordance with

AWWA D110 and ACI 350.

2. Load combinations for non-prestressed/post-tensioned items: In accordance with

ACI 350.

3. Snow load: See drawings for definitions of snow loads.

4. Wind Loads (during construction and prior to backfilling):

a. See drawings for definition of wind loads.

5. Uniform live load over roof area: 20 psf. (non-reducible).

E. Design and detail wall, foundation and roof per ACI 350 and AWWA D110 and the requirements noted herein.

F. Design for lowest mean ambient temperature and for temperature differential required for project location.

1. Foundation/Floor Slab:

a. Refer to Section 33 16 00 – Water Storage Tanks.

b. Refer to Section 31 23 11 - Earthwork for Structures for subgrade conditions.

c. Minimum concrete thickness:

1) Footing: 12-inches.

2) Other Cast-in-Place Concrete elements: 8-inches or as required by

ACI 350 if greater than 8-inches.

d. Minimum Concrete Cover: In accordance with ACI 350:

1) Top cover for membrane floors: 1 1/2-inch.

2) Bottom cover for membrane floors: 2-inch.

3) Pre-stressed or post-tensioned concrete exposed to earth, water, or liquid: 1 1/2-inch for floor and roof, 1-inch for walls.

e. Provide foundation drainage system to collect leakage from tank foundation and discharge freely to daylight away from tank as shown on drawings.

33 16 51 - 6

G. Roof Design Criteria:

1. Conventionally reinforced construction: In accordance with ACI 350 relative to spacing between joints, minimum reinforcement ratios, and cracking serviceability (including serviceability load factors).

2. Prestressed/post-tensioned construction: In accordance with AWWA D110 and

ACI 350.

H. Waterstops:

1. Adhesive waterstops are not permitted.

2. For sliding joints, deflection data shall be submitted and summarized from tank analysis for these locations.

3. Shear, load and deflection capabilities for the proposed waterstop shall be certified in writing by waterstop manufacturer and shall be adequate for movement indicated in tank analysis.

4. Continuous waterstops shall be used at all wall/footing and roof/wall joints.

These joints shall be specifically detailed to remain watertight.

1.05 QUALIFICATIONS

A. Prestressing, Post-tensioning Supplier/Installer:

1. In addition to qualifications listed in Section 33 16 00 – Water Storage Tanks:

a. Provide post-tensioning systems from a Post-Tensioning Institute (PTI)

Certified Plant.

b. Erection engineer shall be a full-time employee of the pre-stressing and post-tensioning and wire-winding supplier/installer.

B. Shotcrete Nozzlemen Certification.

PART 2 PRODUCTS

2.01 TANK

A. AWWA D110 Tank as manufactured by DN Tanks, Incorporated, 351 Cypress Lane, El

Cajon, CA, 92020; The Crom Corporation, 250 SW 36th Terrace, Gainsville, FL 32607, Preload, Incorporated, 49 Wireless Blvd #200, Hauppauge, NY 11788, Precon Tanks, 115 SW 140th Terrace, Newberry, FL 32669; or equivalent with the following essential characteristics:

1. Materials:

a. General requirements:

1) Comply with AWWA D110, PTI TAB.1 and ACI 350.

b. Concrete:

33 16 51 - 7

1) Materials: Conform to Section 03 30 00 – Cast-In-Place Concrete.

2) Wall, interior columns, and roof: 28-day compressive strength not less than 4,500 pounds per square inch and air entrained.

3) Floor: 28-day compressive strength not less than 4,500 psi and no air entrainment.

4) Cement: In accordance with Section 03 30 00 – Cast-In-Place

Concrete Article 2.01 Cementous Materials.

5) Superplasticizer and water reducing admixture shall be incorporated into floor concrete.

c. Shotcrete:

1) 28-day compressive strength not less than 4,500-psi.

2) Cement: Conform to Section 03 30 00 – Cast-In-Place Concrete.

3) Conform to ACI 506.2.

2. Prestress wire or strand for circumferential wrapping:

a. Cold drawn, high-carbon wire shall conform to ASTM A821, ASTM

A227, ASTM A421, and ASTM A648 Class II, as applicable.

b. Strand: Conform to ASTM A416 or A475, as applicable.

3. Reinforcing bars, wire mesh:

a. Reinforcing Bars: ASTM A615, Grade 60.

b. Wire Mesh: ASTM A185 or ASTM A497.

c. Conform to Section 03 20 00 – Concrete Reinforcing.

4. Wedges:

a. Conform to PTI TAB.1. Wedge shall not break into separate pieces upon stressing.

b. Designed to securely anchor strand without significantly reducing ductility of strand or tendon.

c. Strand slip after anchoring is not permitted.

d. Prevent breaking of individual strand wires in wedges during stressing.

e. Achieve dynamic fatigue and impact loading resistance without strand slippage or wire breakage.

5. Steel diaphragm:

a. Provide vertically ribbed steel sheets with adjacent and opposing channels that provide mechanical bond to concrete.

b. Conform to ASTM A653 or A1008.

c. Minimum thickness: 26 gauge.

33 16 51 - 8

d. Uncoated sheet steel shall comply with ASTM A1008.

e. Galvanized sheet steel shall comply with ASTM A653 and have a minimum G90 coating per table 1 of ASTM A653.

6. Elastomeric materials:

a. Bearing pads conforming to ASTM D2240 or ASTM D2000.

b. Sponge filler conforming to ASTM D1056 or ASTM D1752.

c. Epoxy-ASTM C881 Type III, Grade I.

7. Strand for earthquake cables:

a. Galvanized or epoxy coated with a fusion-bonded, grit-impregnated coating according to ASTM A882.

b. ASTM A416, grade 250 or 270 before galvanizing, ASTM A586, ASTM

A603, or ASTM A475 after galvanizing. Only hot-dipped galvanizing shall be permitted for zinc coating.

8. Vertical/Roof/Floor prestressed reinforcement (as required):

a. Strand: ASTM A416, grade 250 or 270.

b. Threadbar: ASTM A722, grade 150 or 160.

c. Post-tensioning systems: Produced by PTI certified plant and tested to meet requirements of ACI 350 for corrosion protection.

d. Post-tensioning systems: Fully encapsulated.

9. Prestressed reinforcing left in ducts for more than 10-days prior to grouting shall be corrosion-protected in accordance with AWWA D110Ducts for bonded tendons:

a. Manufactured ducts for bonded tendons from corrosion-resistant materials and comply with PTI Guide Specification, “Acceptance Standards for

Post-tensioning Systems.”

10. Grout fitting:

a. Grout fittings: Conform to PTI M50.3.

b. Tendons shall have grout openings at stressing anchorages.

c. Provide grout vents or drain holes at low and high points.

d. Prevent grout leakage at grout openings or vents.

11. Grout materials: PTI M50.3 and AWWA D110.

12. Couplings:

a. Couplings for bonded tendons shall not reduce elongation of rupture below requirements of tendon itself.

b. Use where approved by Erection Engineer.

33 16 51 - 9

2.02 FOUNDATION DRAIN

A. Materials:

1. Gravel Drain Material: Conform to Section 31 24 18 – Gravel Drain for Water

Storage Tanks.

2. HDPE Geomembrane, HDPE Embedment Strip, Rubber Gaskets, Stainless Steel

Clamps, and Sealant: Conform to Section 31 32 36 – HDPE Geomembrane for

Water Storage Tanks.

3. PVC Pipe: Conform to Section 33 11 17 – PVC Gravity Drain for San Juan

Lateral Water Treatment Plant Regulating Tanks.

2.03 ACCESSORIES

A. Refer to Section 33 16 00 – Water Storage Tanks.

B. Interior Ladder:

1. Type 304 stainless steel.

2. Requirements for interior ladder: Comply with 29 CFR 1910.27 and IBC.

3. Supports on tank interior: Stainless steel.

C. DELETED

PART 3 EXECUTION

3.01 CONSTRUCTION

A. Comply with AWWA D110, ACI 372 and ACI 350.

B. Do not place concrete foundation/floor slab until subgrade is approved by Erection

Engineer.

C. Core Wall:

1. Provide continuous and full-length steel diaphragm between tank contents and prestressing wires:

a. With no horizontal joints.

b. Mechanically seam vertical diaphragm joints except where located between wall panels, where either mechanical seaming or sealing with epoxy may be employed.

c. Seal vertical diaphragm joints to be full watertight.

d. Piercing of diaphragm is not permitted except by design.

33 16 51 - 10

e. Do not allow form ties to pierce diaphragm.

2. Fabricate precast panels to curvature of tank radius:

a. Tolerance in panel wall thickness: 0- to plus 1/4-inch.

b. Place concrete for each panel in one continuous operation.

3. Locate bearing pads and hold them in position prior to erection of wall panels.

Do not nail pads.

4. Properly secure sponge filler pads. Caulk voids around bearing pads and sponge with non-toxic sealant to prevent mortar seepage.

5. Field-placed concrete or shotcrete shall be form and/or water cured until prestressing begins.

D. Horizontal Prestressing:

1. Term “wire” signifies either wire or strand.

2. Place prestressing wire on wall with wire winding machine capable of consistently producing stress in wire within range of 0 percent to ±2 percent of stress required by design:

a. No circumferential movement of wire along tank wall will be permitted during or after stressing wire.

3. Stressing may be accomplished by drawing wire through die or other means that result in uninterrupted elongation, thus assuring uniform stress throughout length and over periphery of tank.

4. Temporarily anchor each coil of prestressing wire at enough intervals to minimize loss of prestress in case wire breaks during wrapping.

5. Minimum spacing (center to center) of prestressing wires is 3/8-inch and minimum clear space between wires of 5/16-inch or 1.5 wire diameters, whichever is greater:

a. Respace wires not meeting spacing requirements.

b. Do not place prestressing closer than 3-inch from base of walls or floors where radial movement may occur.

6. Displace band of prestressing normally required over height of opening into circumferential bands immediately above and below opening to maintain required prestressing force. Bundling of wires is prohibited.

7. Splicing of wire: Only permitted when completing application of a full coil of wire, or when removing defective section of wire:

a. Join ends of individual coils by suitable steel splicing devices capable of…