Attachment__10_-_00_00_01_-_Specifications_06132022_0003.pdf

Navajo-Gallup Water Supply Project Amendment 3 San Juan Lateral – Pumping Plants No. 2 and No. 3 Solicitation No.

Price Schedule B - 1 Revised

SECTION B – SUPPLIES OR SERVICES AND PRICES

NAVAJO-GALLUP WATER SUPPLY PROJECT

SAN JUAN LATERAL

PUMPING PLANTS NO. 2 AND NO. 3

NEW MEXICO

B.1 PRICE SCHEDULES

(a) Offers will be considered for award on the following Price Schedules, but no offer will be considered for award on only part of the Price Schedules.

(b) Offers are subject to the terms and conditions of this solicitation.

(c) Quantities in Price Schedules are estimated quantities for comparison of offers only.

Except as provided in contract clause at FAR 52.211-18, Variation in Estimated Quantity, no claim shall be made against Government for overruns or underruns. Contract clause at FAR 52.211-18, Variation in Estimated Quantity does not apply to lump sum items.

(d) See contract clause at WBR 1452.232-81, Payment for Mobilization and Preparatory Work, for CLIN 1-1 and 2-1.

(e) Definitions:

(1) CLIN – Contract Line Item Number

(f) Note: In accordance with Section 7-9-3.3 of New Mexico Statutes Annotated (NMSA) 1978 and Section 402 of Navajo Nation’s Business Activity Tax Statute, it is Contractor’s responsibility to ensure that all applicable New Mexico Gross Receipts Tax and Navajo Nation Gross Receipts Tax are included in their price proposal.

(g) In accordance with FAR 52.232-5 (Payments under Fixed-Price Construction Contracts) (b)(2), payment may be approved for materials delivered to Contractor at locations other than the site if Contractor obtains CO approval prior to making arrangements for obtaining the materials. Contractor shall also be required to complete a “Materials on Hand Certificate” which will certify:

(1) Materials described for use on identified contract.

(2) Materials are clearly marked to identify that they belong to contract cited.

(3) Full title for those materials vested in Prime Contractor sited.

(4) Materials are free of liens and encumbrances.

(5) Materials are properly store, secured, and protected against loss or damage.

B - 2 Revised

PRICE SCHEDULE 1 (Pumping Plant No. 2)

CLIN Section Supplies or Services Quantity and Unit

Unit Price Amount

1-1 WBR

1452.232-

Mobilization and Preparatory Work

For the lump sum of $

1-2 01 31 30 Contract Document Management System

For the lump sum of $

1-3 01 33 26 Electrical Drawings and Data For the lump sum of $

1-3A 01 51 00 Construction Temporary Electric Power

36 months $ $

1-3B 01 51 00 Testing and Commissioning Temporary Electric Power

6 months $ $

1-4 01 56 15 Underground Utility Line Investigations

For the lump sum of $

1-5 01 78 30 As-built and Final Drawings For the lump sum of $65,000

1-6 01 78 30 Operations and Maintenance (O&M) Manuals PP No. 2

For the lump sum of $260,000

1-7 01 80 15 Commissioning For the lump sum of $

1-8 03 20 00 Concrete Reinforcing 99,000 lb $ $

1-9 03 30 00 Concrete 740 yd3 $ $

1-10 03 35 10 Concrete Floor Hardener 6,400 ft2 $ $

1-11 03 48 00 Plant-Precast Concrete Structures

For the lump sum of $

1-12 04 22 10 Reinforced Concrete Unit Masonry Assemblies

For the lump sum of $

1-13 05 50 00 Metal Fabrications For the lump sum of $

1-14 06 82 10 Fiberglass Reinforced Plastic (FRP) Fabrications

For the lump sum of $

1-15 07 19 20 Silane Water Repellent For the lump sum of $

1-16 10 14 00 Signage For the lump sum of $

1-17 10 44 20 Fire Extinguishers For the lump sum of $

B - 3 Revised

PRICE SCHEDULE 1 (Pumping Plant No. 2)

CLIN Section Supplies or Services Quantity and Unit

Unit Price Amount

1-18 10 51 00 Lockers For the lump sum of $

1-19 13 34 21 Metal Building System For the lump sum of $

1-20 21 22 00 Clean Agent Fire Extinguishing System

For the lump sum of $

1-21 22 13 16 Plant Piping Systems For the lump sum of $

1-22 22 14 30 Sump Pumping Systems For the lump sum of $

1-23 23 00 00 Heating, Ventilating, and Air- Conditioning (HVAC) System

For the lump sum of $

1-24 25 00 01 System Control and Monitoring

For the lump sum of $

1-25 26 05 10 Conductors and Cables 23,000 lin ft $ $

1-26 26 05 13 Medium-Voltage Power Cable 2,000 lin ft $ $

1-27 26 05 13 Medium-Voltage Power Cable Accessories

For the lump sum of $

1-28 26 05 20 Ground Cable 1,200 lin ft $ $

1-29 26 05 20 Ground Rods 11 each $ $

1-30 26 05 20 Electrical Ground Resistance Test

For the lump sum of $

1-31 26 05 33 Electrical Conduit 4,000 lin ft $ $

1-32 26 05 33 Fabricated Sheet Steel Boxes, Wiring Troughs, and Precast Handholes

For the lump sum of $

1-33 26 05 36 Cable Trays 550 lin ft $ $

1-34 26 12 19 Pad Mounted Transformer For the lump sum of $

1-35 26 17 20 Metal-Clad Switchgear Assembly

For the lump sum of $

1-36 26 18 39 Medium-Voltage Motor Controllers

For the lump sum of $

B - 4 Revised

PRICE SCHEDULE 1 (Pumping Plant No. 2)

CLIN Section Supplies or Services Quantity and Unit

Unit Price Amount

1-37 26 22 12 Dry-Type Transformer For the lump sum of $

1-38 26 24 13 Switchboards For the lump sum of $

1-39 26 24 41 Distribution Panelboards For the lump sum of $

1-40 26 26 10 Transformer Load Center For the lump sum of $

1-41 26 27 40 Wiring Devices For the lump sum of $

1-42 26 32 10 Diesel Engine-Generator Set (Pumping Plant No. 2)

For the lump sum of $

1-43 26 42 10 Corrosion Monitoring Systems

For the lump sum of $

1-44 26 42 11 Submerged Galvanic Anode Cathodic Protection System for Welded Tanks

For the lump sum of $

1-45 26 51 00 Interior Lighting For the lump sum of $

1-46 26 52 00 Emergency and Exit Lighting For the lump sum of $

1-47 26 56 00 Exterior Lighting For the lump sum of $

1-48 27 30 01 Telephone System For the lump sum of $

1-49 28 10 01 Security and Surveillance System

For the lump sum of $

1-50 28 31 00 Fire Detection and Alarm For the lump sum of $

1-51 31 02 10 Water for Dust Abatement 130 MGal $ $

1-52 31 02 30 Dust Palliative 4.6 Acre $ $

1-53 31 23 10 Common Excavation for Site and Structure Foundations

9,600 yd3 $ $

1-54 31 23 10 Rock Excavation for Site and Structure Foundations

1,750 yd3 $ $

1-55 31 23 10 Processing of Site and Foundation Materials

13,500 yd3 $ $

B - 5 Revised

PRICE SCHEDULE 1 (Pumping Plant No. 2)

CLIN Section Supplies or Services Quantity and Unit

Unit Price Amount

1-56 31 23 10 Compacted Backfill for Site and Structure Foundations

13,500 yd3 $ $

1-57 31 23 50 Earthwork for Roads 120 yd3 $ $

1-58 31 24 18 Gravel Drain Material for Water Storage Tanks

550 yd3 $ $

1-59 31 32 36 HDPE Geomembrane for Water Storage Tanks

950 yd2 $ $

1-60 31 37 00 Riprap 16 yd3 $ $

1-61 32 15 10 Gravel Surfacing 1,100 yd3 $ $

1-62 32 31 01 Fence Grounding For the lump sum of $

1-63 32 31 10 Chain Link Fence 960 lin ft $ $

1-64 32 31 70 Cattle Guards 1 each $ $

1-65 32 91 60 Erosion Control Blanket 180 yd2 $ $

1-66 32 92 20 Seeding 2.9 Acre $ $

1-67 33 09 13 Pressure Differential Flowmeter Systems

For the lump sum of $

1-68 33 11 15 PVC Pipe Drains for Water Storage Tanks 300 lin ft $ $

1-69 33 12 71 Vertical Pumping Units For the lump sum of $

1-70 33 16 14 Air Chambers and Air Compressors

For the lump sum of $

1-71 33 16 40 Water Storage Tanks For the lump sum of $

1-72 35 21 95 Steel Manifold Piping For the lump sum of $

1-73 35 22 14 Valves and Equipment For the lump sum of $

1-74 46 33 00 Chlorine Residual Sample System

For the lump sum of $

1-75 46 33 00 Mixers For the lump sum of $

B - 6 Revised

TOTAL FOR PRICE SCHEDULE 1 $_________________

B - 7 Revised

PRICE SCHEDULE 2 (Pumping Plant No. 3)

CLIN Section Supplies or Services Quantity and Unit

Unit Price Amount

2-1

WBR

1452.232-

Mobilization and Preparatory Work For the lump sum of $

2-2 01 31 30 Contract Document Management System For the lump sum of $

2-3 01 33 26 Electrical Drawings and Data For the lump sum of $

2-3A 01 51 00 Construction Temporary Electric Power

36 months $ $

2-3B 01 51 00 Testing and Commissioning Temporary Electric Power

6 months $ $

2-4 01 56 15 Underground Utility Line Investigations For the lump sum of $

2-5 01 78 30 As-built and Final Drawings For the lump sum of $65,000

2-6 01 78 30 Operations and Maintenance (O&M) Manuals PP No. 3 For the lump sum of $260,000

2-7 01 80 15 Commissioning For the lump sum of $ 2-8 03 20 00 Concrete Reinforcing 105,000 lb $ $ 2-9 03 30 00 Concrete 810 yd3 $ $

2-10 03 35 10 Concrete Floor Hardener 6,400 ft2 $ $

2-11 03 48 00 Plant-Precast Concrete Structures For the lump sum of $

2-12 04 22 10 Reinforced Concrete Unit Masonry Assemblies For the lump sum of $

2-13 05 50 00 Metal Fabrications For the lump sum of $

2-14 06 82 10 Fiberglass Reinforced Plastic (FRP) Fabrications For the lump sum of $

2-15 07 19 20 Silane Water Repellent For the lump sum of $

2-16 10 14 00 Signage For the lump sum of $

2-17 10 44 20 Fire Extinguishers For the lump sum of $

2-18 10 51 00 Lockers For the lump sum of $

2-19 13 34 21 Metal Building System For the lump sum of $

2-20 21 22 00 Clean Agent Fire Extinguishing Systems For the lump sum of $

2-21 22 13 16 Plant Piping Systems For the lump sum of $ 2-22 22 14 30 Sump Pumping Systems For the lump sum of $

B - 8 Revised

PRICE SCHEDULE 2 (Pumping Plant No. 3)

CLIN Section Supplies or Services Quantity and Unit

Unit Price Amount

2-23 23 00 00 Heating, Ventilating, and Air- Conditioning (HVAC) System For the lump sum of $

2-24 25 00 01 System Control and Monitoring For the lump sum of $

2-25 26 05 10 Conductors and Cables 26,000 lin ft $ $ 2-26 26 05 13 Medium-Voltage Power Cable 3,200 lin ft $ $

2-27 26 05 13 Medium-Voltage Power Cable Accessories For the lump sum of $

2-28 26 05 20 Ground Cable 1,600 lin ft $ $ 2-29 26 05 20 Ground Rods 13 each $ $

2-30 26 05 20 Electrical Ground Resistance Test For the lump sum of $

2-31 26 05 33 Electrical Conduit 6,400 lin ft $ $

2-32 26 05 33 Fabricated Sheet Steel Boxes, Wiring Troughs, and Precast Handholes

For the lump sum of $

2-33 26 05 36 Cable Trays 550 lin ft $ $ 2-34 26 12 19 Pad Mounted Transformer For the lump sum of $

2-35 26 17 20 Metal-Clad Switchgear Assembly For the lump sum of $

2-36 26 18 39 Medium-Voltage Motor Controllers For the lump sum of $

2-37 26 22 12 Dry-Type Transformer For the lump sum of $ 2-38 26 24 13 Switchboards For the lump sum of $ 2-39 26 24 41 Distribution Panelboards For the lump sum of $ 2-40 26 27 40 Wiring Devices For the lump sum of $

2-41 26 32 10 Diesel Engine-Generator Set at Pumping Plant No. 3 For the lump sum of $

2-42 26 42 10 Corrosion Monitoring Systems For the lump sum of $

2-43 26 42 11 Submerged Galvanic Anode Cathodic Protection System for Welded Tanks

For the lump sum of $

2-44 26 51 00 Interior Lighting For the lump sum of $ 2-45 26 52 00 Emergency and Exit Lighting For the lump sum of $ 2-46 26 56 00 Exterior Lighting For the lump sum of $

B - 9 Revised

PRICE SCHEDULE 2 (Pumping Plant No. 3)

CLIN Section Supplies or Services Quantity and Unit

Unit Price Amount

2-47 27 30 01 Telephone System For the lump sum of $

2-48 28 10 01 Security and Surveillance System For the lump sum of $

2-49 28 31 00 Fire Detection and Alarm For the lump sum of $ 2-50 31 02 10 Water for Dust Abatement 240 MGal $ $ 2-51 31 02 30 Dust Palliative 8.7 Acre $ $

2-52 31 23 10 Common Excavation for Site and Structure Foundations 7,000 yd3 $ $

2-53 31 23 10 Rock Excavation for Site and Structure Foundations 24,000 yd3 $ $

2-54 31 23 10 Processing Site and Foundation Materials 15,500 yd3 $ $

2-55 31 23 10 Compacted Backfill for Site and Structure Foundations 15,500 yd3 $ $

2-56 31 23 50 Earthwork for Roads 2,100 yd3 $ $

2-57 31 24 18 Gravel Drain Material for Water Storage Tank 550 yd3 $ $

2-58 31 32 36 HDPE Geomembrane for Water Storage Tanks 950 yd2 $ $

2-59 31 37 00 Riprap 35 yd3 $ $

2-60 32 15 10 Gravel Surfacing 2,200 yd3 $ $ 2-61 32 31 01 Fence Grounding For the lump sum of $ 2-62 32 31 10 Chain Link Fence 1,300 lin ft $ $ 2-63 32 91 60 Erosion Control Blanket 3,200 yd2 $ $ 2-64 32 92 20 Seeding 5.4 Acre $ $

2-65 33 09 13 Pressure Differential Flowmeter Systems For the lump sum of $

2-66 33 11 15 PVC Pipe Drains for Water Storage Tanks 300 lin ft $ $

2-67 33 12 71 Vertical Pumping Units For the lump sum of $

2-68 33 16 14 Air Chambers and Air Compressors For the lump sum of $

2-69 33 16 40 Water Storage Tanks For the lump sum of $

2-70 33 42 30 24-Inch Diameter Corrugated Metal Pipe Culvert 40 lin ft $ $

2-71 35 21 95 Steel Manifold Piping For the lump sum of $ 2-72 35 22 14 Valves and Equipment For the lump sum of $

B - 10 Revised

PRICE SCHEDULE 2 (Pumping Plant No. 3)

CLIN Section Supplies or Services Quantity and Unit

Unit Price Amount

2-73 46 33 00 Mixers For the lump sum of $

TOTAL FOR PRICE SCHEDULE 2 $_________________

END OF SUPPLIES OR SERVICES AND PRICES

Temporary Utilities 01 51 00 - 1 Revised

SECTION 01 51 00

TEMPORARY UTILITIES

PART 1 GENERAL

1.01 MEASUREMENT AND PAYMENT

A. Construction Temporary Electric Power:

1. Measurement: Time temporary power is provided.

2. Payment: Monthly.

a. Bid project assuming power is provided by generators.

b. If permeant power arrives on site before construction is complete, cost will be reimbursed based on NTUA Invoice amounts.

B. Testing and Commissioning Temporary Electric Power:

1. Measurement: Time temporary power is provided.

2. Payment: Monthly.

a. Bid project assuming power is provided by generators.

b. If permeant power arrives on site before construction is complete, cost will be reimbursed based on NTUA Invoice amounts.

C. Cost:

1. Include price of other utilities except power in other items of work.

2. Include in prices offered in the Price Schedules for other items of work.

1.02 REFERENCE STANDARDS

A. Institute of Electrical and Electronics Engineers (IEEE)

1. IEEE C2-17 National Electrical Safety Code (NESC)

1.03 SUBMITTALS

A. RSN 01 51 00-1, Water Storage:

1. Location and method of water storage:

a. Include drawing showing location and dimensions.

b. Travel route from water source to and from worksite.

c. Culturally clear and meet environmental requirements for road maintenance and/or minor improvements.

d. Provide agreement with entity providing water.

01 51 00 - 2 Revised

1.04 TEMPORARY ELECTRICITY

A. Provide all electric power required for construction, testing and commissioning through contract completion and acceptance by Government.

B. Provide all generators, transmission lines, distribution circuits, transformers, and other electrical equipment and facilities required for obtaining power and distributing power to points of use.

C. Contractor is responsible for making all arrangements and payments to Utility Companies for all temporary electricity required for construction, testing and commissioning through contract completion and acceptance by Government.

D. Comply with IEEE C2 clearances and spacing for temporary communications and supply lines.

E. Potential Sources:

1. Depending on availability the following entities may have electricity:

a. Pumping Plants No. 2 and No. 3:

1) Navajo Tribal Utility Authority (NTUA):

Contact:

Navajo Tribal Utility Authority P.O. Box 1749 Shiprock, NM 87420 Telephone: 1-800-528-5011 Attn: Georgek@ntua.com and Lesterl@ntua.com Website: www.ntua.com

1.05 TEMPORARY WATER

A. Provide all water required for construction, testing and commissioning through contract completion and acceptance by Government.

B. Potential Sources:

1. Depending on availability the following entities may have potable water:

2. Contact for access, metering, and billing arrangements:

a. Navajo Tribal Utility Authority (NTUA):

1) Contact:

Navajo Tribal Utility Authority P.O. Box 170 Fort Defiance, AZ 86504 Telephone: 800-528-5011 www.ntua.com

b. Navajo Nation Water Code Administration (NNWCA) may have non-potable construction water:

mailto:Georgek@ntua.com mailto:Lesterl@ntua.com http://www.ntua.com/ http://www.ntua.com/

01 51 00 - 3 Revised

1) Pumping Plants No. 2 and No. 3:

a) Contact:

Navajo Nation Water Code Administration P.O. Box 678 Fort Defiance, AZ 86504 Attn: Melvin Badonie Shiprock Field Office Telephone: 505-368-1426 www.watercode.navajo-nsn.gov

C. Arrange, pay, and transport water for use during construction:

1. Provide proof of payment to water utility.

D. Use water which meets specified requirements for water used in concrete, soil-cement, masonry, grouting, and other permanent work.

E. Furnish means of conveying water to points of use.

1.06 TEMPORARY SANITARY FACILITIES

A. Provide temporary sanitary facilities.

PART 2 PRODUCTS

Not Used

PART 3 EXECUTION

3.01 REMOVAL

A. Remove temporary equipment and facilities upon completion of work under this contract.

END OF SECTION

http://www.watercode.navajo-nsn.gov/

01 51 00 - 4 Revised

This page intentionally left blank.

Raceways and Boxes 26 05 33-1 Revised

SECTION 26 05 33

RACEWAYS AND BOXES

PART 1 GENERAL

1.01 MEASUREMENT AND PAYMENT

A. Electrical Conduit:

1. Measurement: Length of installed conduit.

2. Payment: Linear foot prices offered in the Price Schedules for applicable conduit:

a. Includes cost of work and materials for conduit.

B. Fabricated Sheet Steel Boxes, Wiring Troughs, and Precast Handholes:

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

a. Includes cost of drilling and punching holes.

1.02 REFERENCE STANDARDS

A. American National Standards Institute (ANSI)

1. ANSI C80.1-2020 Electric Rigid Steel Conduit (ERSC)

2. ANSI/SCTE 77-2017 Specification for Underground Enclosure

Integrity

B. Institute of Electrical and Electronics Engineers (IEEE)

1. IEEE C2-2017 National Electrical Safety Code (NESC)

C. National Electrical Manufacturers Association (NEMA)

1. NEMA 250-2014 Enclosures for Electrical Equipment

(1,000 Volts Maximum)

2. NEMA FB 1-2014 Fittings, Cast Metal Boxes, and Conduit

Bodies for Conduit, Electrical Metallic Tubing, and Cable

3. NEMA RN-1-2018 Polyvinyl Chloride (PVC) Externally Coated Galvanized Rigid Steel Conduit and Intermediate Metal Conduit

4. NEMA TC 2-2020 Electrical Polyvinyl Chloride (PVC) Tubing and Conduit

5. NEMA TC 3-2016 Polyvinyl Chloride (PVC) Fittings for Use with Rigid PVC Conduit and Tubing

D. National Fire Protection Association, Inc. (NFPA)

1. NFPA 70-2020 National Electrical Code (NEC)

26 05 33-2 Revised

E. Underwriters Laboratories, Inc. (UL)

1. UL 360-13 Liquid-tight Flexible Steel Conduit

2. UL 6-2007 Electrical Rigid Metal Conduit – Steel

3. UL 651-11 Schedule 40 and 80 Rigid PVC Conduit

1.03 DESIGN REQUIREMENTS

A. Determine/verify size of junction and pull boxes, fabricated sheet steel boxes, and precast handholes in accordance with NPFA 70.

B. Determine/verify size of wiring trough in accordance with NFPA 70.

1.04 SUBMITTALS

A. Submit the following in accordance with Sections 01 33 00 – Submittals and 01 33 26 – Electrical Drawings and Data.

B. RSN 26 05 33-1, Approval Drawings and Data:

1. Manufacturer’s drawings and catalog data.

C. RSN 26 05 33-2, As-built Drawings:

1. Marked prints of specifications drawings indicating “As-built” changes made to electrical raceways during construction.

PART 2 PRODUCTS

2.01 RACEWAYS

A. Plastic Coated Rigid Steel (PCRS):

1. Conduit conforms to ANSI C80.1, UL6 and NEMA RN-1.

B. Rigid Metal Conduit (RMC):

1. ANSI C80.1.

C. Rigid Polyvinyl Chloride Conduit (PVC):

1. Product Description: Schedule 80 PVC conduit. Conduit and elbows furnished with integral bell end.

2. Length: Manufacturer’s standard 10- or 20-foot lengths.

3. Temperature Rating: Equal to or greater than temperature rating of enclosed conductors.

4. Conduit: Conform to NEMA TC 2, NFPA 70, and UL 651. Fittings and conduit bodies conform to NEMA TC 3, NFPA 70, and be UL listed.

26 05 33-3 Revised

D. Liquidtight Flexible Metal Conduit (LFMC):

1. Interlocked steel construction with PVC jacket.

2. Ultra-violet resistant.

3. Color: Black.

4. Conform to NFPA 70 and UL 360.

5. Fittings conform to NEMA FB 1.

E. Wiring Trough:

1. Material: 16-gauge or 14-gauge galvanized steel.

2. Enclosure:

a. NEMA Type 3R in accordance with NEMA 250.

b. Drip shield top and no knockouts.

3. Slip-on removable cover fastened with captive screws along bottom edge and provided with provisions for padlocking.

4. Embossed mounting holes on back of enclosure.

5. Finish: Manufacturer’s standard grey coating inside and outside of enclosure.

2.02 OUTLET BODIES, DEVICE BOXES, JUNCTION AND PULL BOXES

A. Outlet Bodies and Fittings:

1. Material: Cast iron or malleable iron.

2. Covers: Cast or sheet metal.

B. Cast Devices Boxes: Type FD and GRF manufactured by Cooper Crouse-Hinds; or equal, having the following essential characteristics:

1. Rectangular or round, deep-wiring device outlet boxes with threaded hub connections for rigid steel conduit.

2. Material: Iron alloy.

3. Number of gangs: As required.

4. Provide plugs for unused openings.

5. Extension rings: Iron alloy with corrosion-resistant finish.

C. Boxes for Dry Wall Construction:

1. Standard galvanized sheet steel switch and outlet boxes.

2. Switch boxes:

a. Depth: 2 1/8-inches, minimum.

b. Number of gangs: As required.

c. Furnish with raised device covers (plaster rings).

26 05 33-4 Revised

D. Fabricated Sheet Steel Boxes:

1. Used as junction and pull boxes.

2. Sheet steel thickness: No. 14 United States Standard gauge, minimum.

3. Boxes installed in pumping plant building to be NEMA Type 12. Boxes installed outdoors to be NEMA type 4.

4. Hinged cover with oil-resistant gasket.

5. Finish: Manufacturer’s standard grey coating.

6. Conform to NEMA 250.

E. Large, Fabricated Sheet Steel, Free Standing, Type 4 Enclosures:

1. Large free-standing pull box, NEMA 250, Type 4.

2. Sheet steel: 12-gauge, minimum.

3. Seams: Continuously welded and ground smooth.

4. Coating: Polyester powder coating over phosphatized surface, inside and out, ANSI 61 gray.

5. Internal mounting channels welded horizontally to sides at top, bottom, and center.

6. Stainless-steel door clamps and heavy gauge continuous hinge with stainless-steel pin.

7. Includes lifting eyes, document pocket, and oil resistant door gasket.

8. Size in accordance with NFPA 70 or as indicated on drawings.

2.03 PRECAST HANDHOLE

A. Type: Precast polymer concrete with open bottom and Tier 15 rating.

B. Cover:

1. Bolt down type with gasket and stainless-steel bolts.

2. Tier level rating embossed on the surface.

3. Electrical pull box: Embossed logo “ELECTRIC” on the surface.

4. Communication pull box: Embossed logo “OPTICAL FIBER” on surface.

C. Provide embedded pulling eyes with ratings suitable for installation. Locate pulling eyes on wall opposite each conduit entrance.

D. Conform to test provisions of ANSI/SCTE 77.

26 05 33-5 Revised

2.04 CONDUIT FITTINGS

A. Expansion-deflection Couplings:

1. Furnish for movement in any direction.

2. Watertight, raintight, concrete tight.

3. Deflection and expansion: 3/4-inch, minimum.

4. Angular misalignment: 30-degrees, minimum.

B. Watertight Conduit Hubs:

1. Myers hub manufactured by Cooper Industries, Crouse-Hinds Division, Syracuse, NY, catalog series ST-, STA- and SSTG-; catalog series HUB- and HUBG-manufactured by Appleton, Rosemont, IL; catalog series CHM- manufactured by O-Z Gedney, Rosemont, IL; or equal with the following essential characteristics:

a. Suitable for terminating rigid steel electrical conduit through the walls of enclosures.

b. Recessed O-ring for raintight connection.

c. In accordance with NEMA FB-1.

d. Galvanized malleable iron.

e. Insulated throat.

2.05 ACCESSORIES

A. Fittings required to complete electrical conduit systems. Includes, caps, connectors, couplings, unions, nipples, reducers, elbows, pipe plugs, bondnuts, and any other fittings.

B. Devices required to fasten, clamp, attach, and support conduit in place. Includes supports and clamps complete with bolts, washers, and nuts.

C. Locknuts and Bushings:

1. Locknuts: Steel. Die cast locknuts are not acceptable.

2. Bushings: Insulated and pressure cast or malleable iron. Grounding bushing to be lay-in saddle type.

D. Conduit Riser Grips:

1. Suitable to support vertical cable runs in rigid steel conduit.

2. Single weave closed or split mesh type.

3. Mesh material: Tin-coated bronze strands.

E. Conduit Tags: Round brass or stainless-steel.

F. Polyethylene Warning Tape:

1. Type: Heavy-duty polyethylene, detectable underground warning tape.

26 05 33-6 Revised

2. Width: 6-inches.

3. Color: Red.

4. Copy: Continuously imprinted with "CAUTION BURIED ELECTRIC LINE BELOW" or equivalent wording.

5. Suitable for direct burial.

G. Thread Lubricant: Lithium, graphite, or zinc-based material designed to inhibit corrosion and to lubricate metal-to-metal joints.

H. Electrical duct seal for sealing ends of raceways.

I. Protective Sealant: Water repellant, and resistant to peeling and cracking.

J. PVC Solvent Cement: In accordance with NEMA TC 2 and conduit manufacturer's recommendations.

K. Corrosion Protection Tape:

1. ScotchrapTM 51 All-Weather Corrosion Protection Tape manufactured by 3M, St. Paul, MN, and Plymouth Plywrap 11 Vinyl Pipe Wrap manufactured by Plymouth Ruber Company, Canton, MA; or equal, having the following essential characteristics:

a. Thickness: 20 mils minimum.

b. Material: Polyvinyl chloride (PVC).

PART 3 EXECUTION

3.01 INSTALLATION

A. Conduit Type: As listed below unless shown otherwise:

1. PVC Conduit: For direct-buried conduit inside and outside the fenced pumping plant yard.

2. PVC Conduit: For conduit installed beneath concrete slab floors.

3. Rigid Metal Conduit: Exposed conduit, unless shown otherwise. Vertical risers through concrete slab floor.

B. Install as shown and in accordance with NFPA 70 and IEEE C2.

C. Determine routing of exposed, buried, and embedded conduit when not shown.

D. Determine exact location of embedded conduit stub-ups based on equipment being furnished.

E. Equipment base templates or mockups.

26 05 33-7 Revised

1. Provide for electrical equipment where conduits embedded in concrete penetrate cutouts in base or floors of enclosures.

a. Fabricated using approved project specific equipment manufacturer’s drawings as a guide.

b. Examples of equipment: metal-clad switchgear, motor control equipment, switchboards, motor control centers, and floor mounted enclosures.

2. Use to demonstrate proper alignment of conduit prior to concrete placement.

3. Do not modify equipment enclosures to permit entry of misaligned conduit.

F. Bends:

1. Make smooth, gradual bends to permit pulling insulated conductors without undue stress or damage to conductors or conduit.

2. Ensure bends are free from kinks, indentations, or flattened surfaces.

3. Make metal conduit bends onsite with radii in accordance with NFPA 70.

4. Bend conduit cold to prevent damage to protective coating.

G. Remove burrs and sharp corners at ends of metal conduit.

H. Coat male threads of rigid metal conduit joints with suitable graphite or zinc sealing material before making joints.

I. Tighten conduit joints securely to ensure electrical continuity and to prevent entrance of moisture or foreign material.

J. Install with necessary fittings and supports.

K. Make transitions from PVC conduit to RMC with suitable fittings designed for application.

L. Tighten conduit to electrical equipment mounted on tubular metal structures securely and support rigidly in place by conduit clamps, hex head nuts, and threaded 3/8-inch stud fasteners driven by powder-actuated tools.

M. Install expansion couplings where exposed or embedded conduits cross expansion or contraction joints. Install expansion couplings and expansion-deflection couplings in accordance with manufacturer’s instructions.

N. Conduit for Fire Protection System:

1. Conduit shall be dedicated to fire protection system. Wiring for fire alarm system shall not be installed in conduits, junction boxes, or outlet boxes with conductors of other systems.

2. See Section 28 31 00 – Fire Detection and Alarm for additional information.

O. Exposed Conduit Runs:

26 05 33-8 Revised

1. Straight and parallel with each other and with centerlines of room or structure.

2. Support conduit rigidly in place and in accordance with NFPA 70. Do not weld conduit to conduit supports or structural steel.

P. Conduit Beneath Concrete Slab Floors:

1. Transition horizontal runs of PVC conduit to rigid metal conduit before making

90-degree bends using appropriate conduit fitting.

2. Make 90-degree bend with rigid metal conduit and extend vertically through concrete slab floor. Ensure conduit risers are vertically plumb.

3. Wrap rigid metal conduit with anti-corrosion tape from transition coupling to at least 6-inches above concrete slab floor.

4. Apply manufacturer’s recommended pipe primer to rigid metal conduit before wrapping with corrosion tape.

5. Apply anti-corrosion tape in accordance with manufacturer’s instructions and recommendations.

6. Make adequate provisions to protect anti-corrosion tape wrap from physical damage during backfill operations.

Q. Conduit Embedded in Concrete:

1. Conduit to be rigid steel (RMC) type.

2. Conduit not to displace more than 3 percent of gross area of cross-section of slab

(Calculate cross sectional area as 12-inches times slab thickness).

3. Conduit outside diameter to be no larger than 1/3 of overall thickness of slab in which they are embedded.

4. Conduit to be spaced at least 3 diameters or widths on center.

5. Conduit to occupy middle third of cross-sectional depth of slab in which they are embedded, where possible.

6. Protect ends of conduit with coupling and plug to prevent entrance of concrete, sand, or other foreign material.

7. Tie conduit from reinforcing bars or otherwise support to prevent sagging while concrete is being placed.

8. Conduit stub-ups:

a. Minimum length above finished floor: 4-inches, not including coupling.

b. Terminate conduit with coupling and plug until ready to connect remaining conduit sections. Replace plug with bushing or Chase-type nipple before installing insulated conductors.

c. Approximately 1-foot of horizontal embedded conduit and entire vertical stub-up to be plastic-coated rigid steel conduit.

9. Seal conduit boxes with rubber gasketed blank cover. Clean concrete from inside of conduit boxes immediately after forms are removed.

26 05 33-9 Revised

10. Swab conduit within 24-hours after removal of forms with clean dry rags until conduit is thoroughly cleaned and dried.

11. Terminate ends of conduit that do not terminate at boxes with couplings and pipe plugs or insulating bushings and caps.

R. Direct-Buried Conduit:

1. Depth: 24-inches, minimum unless shown otherwise.

2. Install 2-inches of sand around conduit.

3. Install detectable warning tape 18-inches above buried conduit.

4. Backfill and compact trench in accordance with Section 31 23 22 – Pipe Trench Earthwork.

S. Liquid tight Flexible Metal Conduit:

1. Use flexible conduit for connections to equipment that is subject to vibration, where flexibility is required, or where shown.

2. Maximum length of a flexible conduit section is not to exceed 24-inches.

T. Hand Holes:

1. Install in locations shown and in accordance with manufacturer’s instructions and recommendations.

2. Place a minimum of 6-inches of pea gravel or crushed rock in bottom of excavation before installing hand hole.

3. Install such that top of hand hole is at finished grade level.

4. Backfill and compact around hand hole in accordance with Section 31 23 10 – Earthwork for Site and Structures and as directed by COR.

U. Conduit Terminations:

1. Make conduit terminations to indoor boxes, cabinets, and panel boards in accordance with standard drawing 104-D-254.

2. Make conduit terminations to outdoor boxes with watertight conduit hubs. Use of locknuts, bushings, or bushed nipples at outdoor conduit terminations is not acceptable.

3. Install bushings or Chase-type nipples on ends of conduit to protect insulation of insulated conductors from abrasion.

4. Install locknuts and bond nuts to provide tight ground connections between conduit and boxes, panel boards, and cabinets.

5. Make terminations of conduit beneath substation switchgear, motor control equipment, motor control centers, and floor mounted cabinets with grounding bushings. Connect grounding bushing to equipment ground bus with a 4 AWG bare-copper conductor.

26 05 33-10 Revised

6. Seal ends of conduit terminations with electrical duct seal to prevent air circulation and entrance of vermin through conduits into boxes, panel boards, or cabinets. Install duct seal to a minimum depth of 1-inch.

V. Conduit Tags:

1. Provide metal conduit tags for conduit terminations.

2. Stamp or engrave tag with conduit number as shown on “As-Built” cable and conduit schedule.

3. Permanently attach tag to conduit with wire and metal crimp-type connector.

Concrete Wire Wrapped Tank

33 16 51 - 1 - Revised

SECTION 33 16 51

CONCRETE WIRE WRAPPED TANK

PART 1 GENERAL

1.01 MEASUREMENT AND PAYMENT

A. Cost:

1. In accordance with Section 33 16 40 – Water Storage Tanks.

1.02 REFERENCE STANDARDS

A. America Concrete Institute (ACI)

1. ACI 350-06 Building Code Requirements for Environmental Engineering Concrete Structures

2. ACI 350.1-10 Tightness Testing of Environmental Engineering Concrete Containment Structures and Commentary

3. ACI 350.3-06 Seismic Design of Liquid-Containing Concrete Structures and Commentary

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

5. ACI 506R-16 Guide to Shotcrete

6. ACI 506.2-13 Shotcrete

B. American Society of Civil Engineers (ASCE)

1. ASCE 7-16 Minimum Design Load for Buildings and Other Structures.

C. ASTM International (ASTM)

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

2. ASTM A416/A416M-18 Steel Strand, Uncoated Seven-Wire for Prestressed Concrete

3. ASTM A421/A421M-21 Uncoated Stress-Relieved Steel Wire for Prestressed Concrete

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

33 16 51 - 2 - Revised

5. ASTM A586-18 Zinc-Coated Parallel and Helical Steel Wire Structural Strand

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

7. ASTM A648-18 Steel Wire, Hard-Drawn for Prestressed Concrete Pipe.

8. ASTM A653/A653M-20 Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process

9. ASTM A722/A722M-18 Uncoated High-Strength Steel Bars for Prestressing Concrete

10. ASTM A821/A821M-21 Steel Wire, Hard-Drawn for Prestressed Concrete Tanks

11. ASTM A882/A882M-20 Filled Epoxy-Coated Seven-Wire Prestressing Steel Strand

12. 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

13. ASTM A1064/A1064M-18a Carbon-Steel Wire and Welded Wire Reinforcement, Plain and Deformed, for Concrete

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

15. ASTM D1056-20 Flexible Cellular Materials—Sponge or Expanded Rubber

16. ASTM D1752-18 Preformed Sponge Rubber Cork and Recycled PVC Expansion Joint Fillers for Concrete Paving and Structural Construction

17. ASTM D2000-18 Standard Classification System for Rubber Products in Automotive Applications.

18. ASTM D2240-15(2021) Standard Test Method for Rubber Property - Durometer Hardness.

D. American Water Works Association (AWWA)

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

E. International Building Code (IBC)

1. IBC 2018 International Building Code (IBC).

33 16 51 - 3 - Revised

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:

a. Show all details that shall be used in the fabrication of tank components and tank construction.

2. Manufacturer’s installation instructions.

3. Tank surface finishes and coating materials.

4. Concrete design mixes, including shotcrete.

5. Structural design calculations or analyses sealed by a professional engineer registered 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 poste tensioning steel, and any other steel components.

D. RSN 33 16 51-3, Documentation:

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

33 16 51 - 4 - Revised

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.

1.04 DESIGN REQUIREMENTS

A. Tank:

1. Refer to Section 33 16 40 – 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 floor and roof for single concrete placements, no joints are allowed.

4. Foundation/floor slab Floor 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 floor. See Drawings 1695-D-60874, 1695-D-60875, and 1695-D-60875.

B. Earthquake resistance based on ACI 350.3 and the requirements of AWWA D110.

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

1. Load combinations for prestressed or post-tensioned items shall be in accordance with AWWA D110 and ACI 350.

2. Load combinations for non-prestressed/post-tensioned items shall be in accordance with ACI 350.

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

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

1. See drawings for definition of wind loads.

2. 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.

33 16 51 - 5 - Revised

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

G. Foundation/Floor Slab:

1. Refer to Section 33 16 40 – Water Storage Tanks.

2. Refer to Section 31 23 10 – Earthwork for Site and Structures for subgrade conditions.

3. Conventionally reinforced cast-in-place concrete foundation/floor slab is not permitted.

4. Post-tensioned floor membrane slab:

a. Prestressed/post-tensioned construction: In accordance with AWWA D110 and ACI 350:

1) Minimum concrete thickness in accordance with ACI 350.

2) Minimum concrete cover in accordance with ACI 350.

5. Prestressed/post-tensioned structural slab:

a. Prestressed/post-tensioned construction: In accordance with AWWA D110 and ACI 350:

1) Minimum concrete thickness: 8-inches.

2) Minimum concrete cover in accordance with ACI 350.

H. Roof:

1. Conventionally reinforced construction: In accordance with to 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.

I. 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:

33 16 51 - 6 - Revised

1. In addition to qualifications listed in Section 33 16 40 – 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.

PART 2 PRODUCTS

2.01 TANK

A. AWWA D110 Tank as manufactured by DN Tanks, Incorporated, 351 Cypress Lane, ElCajon, CA, 92020; The Crom Corporation, 250 SW 36th Ter, Gainsville, FL 32607, Preload, Incorporated, 49 Wireless Blvd #200, Hauppauge, NY 11788, Precon Tanks, 115 SW 140th Ter, Newberry, FL 32669, or equivalent with the following essential characteristics:

1. Materials:

a. General requirements:

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

b. Concrete:

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

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

3) 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 shall conform to ASTM A416 or ASTM A475, as applicable.

c. Where tank surface is exposed to earth, weather, or liquid and less than

2-inches of concrete cover is provided, strand or wire shall be galvanized per requirements ASTM A586, Table 4, for Class A coating.

3. Reinforcing bars, wire mesh:

a. Reinforcing Bars: ASTM A615, Grade 60.

33 16 51 - 7 - Revised

b. Wire Mesh: ASTM A185 or ASTM A497.

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

4. Wedges:

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

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

c. Strand slip after anchoring shall not be permitted.

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

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

5. Steel diaphragm (as applicable):

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

b. Conform to ASTM A1008 or A653.

c. Minimum thickness: 26 gauge.

d. Uncoated sheet steel shall comply with ASTM A1008.

e. Galvanized sheet steel shall comply with ASTM A653 and have a with 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 shall be produced by a PTI certified plant and tested to meet requirements of ACI 350 for corrosion protection.

d. Post-tensioning systems shall be fully encapsulated.

33 16 51 - 8 - Revised

e. Prestressed reinforcing left in ducts for more than 10-days prior to grouting shall be corrosion-protected in accordance with AWWA D110.

9. Ducts for bonded tendons:

a. Ducts for bonded tendons shall be manufactured from corrosion-resistant materials and shall comply with PTI Guide Specification, “Acceptance Standards for Post-tensioning Systems.”

10. Grout fitting:

a. Grout fittings shall conform to PTI M50.3.

b. Tendons shall have grout openings at stressing anchorages.

c. Provide grout vents or drain holes 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 the elongation of rupture below the requirements of the tendon itself.

b. Use where approved by erection engineer.

2.02 ACCESSORIES

A. Access Doors:

1. Materials:

a. Aluminum.

b. Stainless steel or aluminum bolts.

B. Interior Ladder:

1. Type 304 stainless steel.

2. Requirements for interior ladder: Comply with OSHA and Building Code.

3. All supports on tank interior shall be stainless steel.

C. Silt Stops:

1. Provide removable silt stop(s) at all discharge pipes and at other locations shown.

PART 3 EXECUTION

3.01 CONSTRUCTION

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

B. Do not place concrete floor and foundation foundation/floor slab until subgrade approved by erection engineer.

33 16 51 - 9 - Revised

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 all vertical diaphragm joints to be full watertight.

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

e. Do not allow form ties pierce diaphragm.

2. Fabricate precast panels to curvature of tank radius:

a. Tolerance in panel wall thickness: 0 to 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. Calk all 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. The term “wire” shall signify either wire or strand.

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

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

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

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

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

a. Respace any wires not meeting spacing requirements.

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

33 16 51 - 10 - Revised

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

7. Splicing of the wire shall be only permitted when completing the application of a full coil of wire, or when removing a defective section of wire:

a. Join ends of individual coils by suitable steel splicing devices capable of developing the full strength of the wire.

8. Use a calibrated stress recording device, which can be recalibrated, in determining wire stress levels on the wall during and after the prestressing process.

E. Take at least one stress reading per foot or one stress reading for every roll of wire, whichever is greater, immediately after the wire has been applied on the wall:

1. Record readings referring to the applicable height and layer of wire for which the stress is being taken.

2. Contractor to keep a written record of stress readings and then deliver said record to COR.

3. Make stress readings on straight lengths of wire.

4. If applied stresses fall below design stress in the steel, provide additional wire to bring stress up to required design stress.

5. If stress in the steel is more than 7 percent over required design stress, wrapping operation should be discontinued and adjusted.

F. Foundation Foundation/Floor Slab:

1. No construction joints are permitted.

2. Minimum thickness of 8-inches of concrete required over all pipe encasements in concrete floor (if applicable).

3. Reference Section 31 23 10 – Earthwork for Site and Structures for subgrade conditions.

4. Actively reinforced (structural) floors shall be a minimum 8-inches thick:

a. Apply not less than minimum percentage of reinforcing steel to these thickened sections and extend a minimum of 2-feet into adjacent floor.

5. Consolidate foundation/floor slab so no air pockets or voids are present.

G. Shotcrete:

1. Weather limitations: Comply with AWWA D110.

2. Placement: Comply with ACI 506.2 and AWWA D110.

3. All shotcrete shall be applied by ACI certified nozzlemen.

4. Vertical screed wires shall be used to ensure uniform and correct thickness of shotcrete.

5. Test wall for hollow spots and repair any defective areas.

33 16 51 - 11 - Revised

6. Each shotcrete layer shall be broomed prior to final set to effect satisfactory bonding for subsequent layer.

7. Do not apply shotcrete to reinforcing steel or diaphragm which is encrusted with overspray.

8. Coating of steel diaphragm:

a. Cover steel diaphragm with a layer of shotcrete at least 1-inch thick prior to prestressing.

b. Total minimum coating over steel diaphragm: 3-inches including diaphragm cover, wire cover and finish covercoat.

9. Coating over prestressing wire:

a. Individually encase each prestressed wire in shotcrete of thickness sufficient to provide clear cover over the wire of at least 1/2-inch.

b. Apply finish coat of shotcrete as soon as practicable after last application of wire coat:

1) Total thickness of shotcrete covercoat: Not less than 2-inches over wire or strand.

c. Provide natural gun finish.

H. Tolerances:

1. Out-of-plumb in total wall height: ±1/2-inch.

2. Out-of-round in diameter: ±1-inch.

I. Roof:

1. Cast-in-place or precast concrete free spanning dome roof:

a. Dome roof shall have a rise to span ratio within the range of 1:8 to 1:14.

b. Minimum…