Addendum No. 1_R1.pdf

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December 9, 2022

ADDENDUM NO. 1

TO THE CONTRACT DOCUMENTS

Long Beach Water Department Long Beach, California Bid No. WD-23-042 Specification No. WD-52-22 Valve Pre-Purchase for Large Potable Water Valve Replacement Project Willow St

(EO-3598)

TO ALL PLAN HOLDERS

The following amendment is hereby made a part of the Contract Documents of the subject project as fully and completely as if the same were set forth therein. This Addendum No. 1 consists of pages AD1-1 to AD1-10.

QUESTIONS

QUESTION 1:

Under Section 33 12 14 (Buttefly Valves) Part 1.2 Related Work.

Where do we find the sections listed below that, Specifically:

Section 01 33 00: Submittal Procedures Section 01 40 00: Quality Requirements Section 33 05 39: Manual Valve Operators

ANSWER 1:

1. For Section 01 33 00: Section 01 33 00 is not provided. Refer to the submittals required in the technical sections.

2. For Section 01 40 00: Section 01 40 00 is not provided. Refer to the quality requirements required in the technical sections.

3. For Section 33 05 39: Refer to specification modification provided below. Please note that this prepurchase is solely for the actuator. Any appurtenances such as the valve stem extensions will be provided by others.

SPECIFICATIONS

REPLACE Section 33 12 12: Resilient-Wedge Gate Vales and all other references to the manual operator with Section 33 05 39 (AD1-3 – AD1-10). The portion of the specifications solely related to the actuator for the butterfly valve is applicable.

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Questions regarding the project shall be directed to Ryan Hiney at ryan.hiney@lbwater.org.

Sincerely, Jinny Huang-Uy, P.E.

Manager of Engineering cc: Robert J. Verceles, Director of Engineering/ Chief Engineer

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SECTION 33 05 39

MANUAL VALVE OPERATORS

(ACTUATOR FOR BUTTERFLY VALVE ONLY)

PART 1 - GENERAL

1.1 Work Included

A. Materials, testing, and installation of manual valve operators.

B. Refer to Long Beach Water Department Standard Drawing WDS115 for requirements for 8” adjustable gate valve boxes.

C. Refer to Long Beach Water Department Standard Drawing WDS116 for requirements for 8” gate valve box lids.

D. Refer to Long Beach Water Department Standard Drawing WDS117 for requirements for 12” adjustable gate valve boxes.

E. Refer to Long Beach Water Department Standard Drawing WDS118 for requirements for 12” gate valve box lids.

F. Refer to Long Beach Water Department Standard Drawing WDS119 for requirements for gate valve boxes.

G. Refer to Long Beach Water Department Standard Drawing WDS126 for requirements for reclaimed water valve box lids.

1.2 System Description

A. Furnish and install complete operating manual valve operator including appurtenant structural, mechanical and/or electrical mountings or connections required for compliance with Manufacturer’s installation requirements and compliance with applicable codes and standards.

1.3 References

A. Reference publications below form part of this specification to extent referenced and are referred to within text by basic designation only.

1. ASTM A126 Gray Iron Castings for Valves, Flanges, and Pipe Fittings

2. ASTM A148 Steel Castings, High Strength, for Structural Purposes

3. ASTM A322 Steel Bars, Alloy, Standard Grades

4. ASTM B427 Gear Bronze Alloy Castings

5. ASTM D1785 Poly(Vinyl-Chloride) (PVC) Plastic Pipe, Schedules 40, 80 and 120

6. AWWA C504 Rubber-Seated Butterfly Valves 3”-72”

7. AWWA C507 Ball Valves 6”-60”

8. AWWA C509 Resilient Seated Gate Valves for Water Supply Service

9. AWWA C516 Large-Diameter Rubber-Seated Butterfly Valves 78” and Larger

10. AWWA C517 Resilient-Seated Cast-Iron Eccentric Plug Valves

11. AWWA C541 Hydraulic and Pneumatic Cylinder and Vane-Type Actuators for Valves and Slide Gates

12. AWWA C542 Electric Motor Actuator for Valves and Slide Gates

1.4 Submittals

A. Furnish the following submittals.

SUBMITTAL DESCRIPTION

Shop Drawings Submit per equipment Shop Drawing requirements .

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SUBMITTAL DESCRIPTION

Product Data Submit per Product Data requirements.

Include dimensions and orientations of valve operators to operate with valve stem extensions.

Show locations of internal stops for gear actuators.

Include factory torque sheets showing torque required through opening and closure.

Installation Instructions

Submit per Installation Instruction requirements

Test Record Transcripts

Submit for factory tests per test record transcript requirements

Warranty Furnish one-year warranty from date of final acceptance

1.5 Delivery, Storage, and Handling

A. Refer to Section 01 66 00 for delivery, storage, and handling requirements.

B. Strictly follow Manufacturer’s instructions and warranty requirements for delivery, storage, and handling of manual valve operators.

C. Actuators and valves shall be assembled and factory-tested at valve factory and shipped and delivered to jobsite as a unit.

1.6 Unit Prices

A. Payment for Work in this section shall be included as part of lump-sum or unit-price bid amount for which such Work is appurtenant.

B. Refer to the bid package for measurement and payment clauses for manual valve operators.

PART 2 - PRODUCTS

2.1 Acceptable Manufacturers

A. Acceptable Manufacturers include:

ITEM MANUFACTURER MANUFACTURER LOCATION

Adjustable Chainwheels Trumbull Industries, Inc. Youngstown, OH (800) 677-1799 Orange, CA (714) 505-7079

Accepted Equal Floorstands and Handwheel Actuators

Rodney Hunt / Fontaine Orange, MA (800) 448-8860 Trumbull Industries Youngstown, OH (800) 677-1799

Orange, CA (714) 505-7079 Waterman Industries, Inc. Exeter, CA (800) 445-8457 Accepted Equal

Gear Actuators – Traveling Nut Type

Dezurik/Apco/Hilton M Series Sartell, MN (320) 259-2000 Mueller Co. MDT Chattanooga, TN (423) 209-4800 Henry Pratt Co. MDT Aurora, IL (877) 436-7977 Accepted Equal

Gear Actuators – Worm-Gear Type

AUMA USA GS Series Tustin, CA (714) 247-1250 EIM / Emerson Model WB Series Houston, TX (281) 477-2801 Limitorque Div Flowserve Model HBC or PT Series Lynchburg VA (434) 528-8595 Accepted Equal Alhambra Foundry Company Ltd. Alhambra, CA (626) 289-4294

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ITEM MANUFACTURER MANUFACTURER LOCATION

Valve Box Circular Cover – Iron

Long Beach Iron Works, Inc. Long Beach, CA (562) 432-5451 Neenah Foundry Ontario, CA (626) 602-6796 Reliable Iron Foundry, Inc. Los Angeles, CA (323) 589-3322 South Bay Foundry, Inc. Santee, CA (619) 956-2780 U S Foundry and Manufacturing Corp Medley, FL (305) 885-0301 Western Water Works Supply Company Chino Hills, CA (909) 597-7000 Accepted Equal

Valve Boxes and Covers – Triangular Cover – Concrete

Brooks Products No 4TT Ontario, CA (909) 947-7470 Eisel Enterprises, Inc. Placentia, CA (714) 993-1706 Jensen Precast Sparks, NV (775) 352-2700 J &.R Concrete Products Perris, CA (951) 943-5855 T Christy Enterprises G-5 Anaheim, CA (714) 507-3300 Accepted Equal

Valve Box Triangular Cover – Iron

Bingham & Taylor Mark VTB Culpepper, VA (540) 825-8334

Valve Extension Stems

– Solid Steel

Pipeline Products SX San Marcos, CA (760) 744-8907 Troy Valve Division Penn-Troy Manufacturing, Inc. Troy, PA (570) 297-4442 Trumbull Industries, Inc. Youngstown, OH (800) 677-1799

2.2 Materials

A. Also refer to sections covering valves to which manual operators are attached.

B. Provide valves complete with operating handwheels, handwheel locking devices, shafting, extension stems, levers, chainwheels, chains, floorstands, gear actuators, operating nuts, position indicators, and wrenches required for operation.

C. Actuators for valves in exposed service shall contain dial indicating position of valve disc or plug.

D. Valves shall open by turning counterclockwise.

E. Provide lever or wrench actuators for exposed valves ≤ 3”.

F. Provide traveling nut or worm-gear actuators on butterfly, ball, and plug valves ≥4” as specified below.

G. Where operating torque requirements for valve actuators are not stipulated by AWWA standards, valves shall open:

1. with ≤ 80-pound pull on handwheel, lever, chainwheel or crank when differential pressure across valve equals valve rated pressure class.

2. with ≤ 150-ft-pound torque input on operating nut when differential pressure across valve equals valve rated pressure class.

H. Provide reduction gearing to meet maximum torque and pull design requirement.

1. Gears shall be oil-lubricated.

I. Provide shaft seal to prevent entry of dirt and water into actuator.

J. Unless otherwise specified, materials for traveling-nut gear actuators shall be.

ITEM MATERIAL SPECIFICATION

Gear Housing Same material as valve body

Totally enclosed, watertight

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ITEM MATERIAL SPECIFICATION

Exposed Threaded Parts, Including Cap Screws, Case Bolts, Carriage Bolts, cover Screws, Machine Screws, Set Screws, and Bonnet Bolts

Stainless Steel SAE Type 316

Thrust Nut Bronze Floorstand Universal Joints and Shafting

Stainless Steel SAE Type 316

K. Unless otherwise specified, materials for worm-and-gear actuators shall be.

ITEM MATERIAL SPECIFICATION

Gear Housing Same material as valve body

Totally enclosed, watertight

Exposed Threaded Parts, Including Cap Screws, Case Bolts, Carriage Bolts, cover Screws, Machine Screws, Set Screws, and Bonnet Bolts

Stainless Steel SAE Type 316

Worm Hardened Alloy Steel Conform to ASTM A148 Grade 105-85 or ASTM A322 Grade 41500 Grind and polish threads

Worm Gears Gear Bronze Alloy Conform to ASTM B427 Self-locking 1-piece machine-cut design to prevent creeping

Thrust Nut Bronze Exposed Threaded Parts, Including Cap Screws, Case Bolts, Carriage Bolts, cover Screws, Machine Screws, Set Screws, and Bonnet Bolts

Stainless Steel SAE Type 316

L. Unless otherwise specified, materials for valve boxes shall be H-25 traffic rated and shall be conform to Long Beach Water Department Standard Drawing WDS115 through WDS119, and WDS126.

M. Unless otherwise specified, materials for chain-wheels and floor-stands shall be.

ITEM MATERIAL SPECIFICATION

Adjustable Chain-Wheels Stainless Steel SAE Type 316 Chains Stainless Steel SAE Type 316 Floor-Stands Stainless Steel SAE Type 316 Anchor Bolts Stainless Steel SAE Type 316

N. The following product design criteria, options and accessories are required:

ITEM DESCRIPTION

Minimum Rated Working Pressure

Class 150 (300 WOG psi at 150°F) Class 200 (400 WOG psi at 150°F) Class 300 (600 WOG psi at 150°F)

Design Differential Pressure Assume differential pressure across plug or disc equals specified rated working pressure of valve.

Fluid Temperature 33°F-120°F Surface Loading Criteria H-25 (40k axle 20k wheel load) Soil Cover 1’-20’

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O. The following product design criteria, options and accessories are required for worm gear operators:

ITEM DESCRIPTION

Worm Gear Helix Angle Design and cut to prevent valve creeping under flow conditions.

Worm Gear Shaft Supports Support worm gear shaft at each end by ball or tapered roller bearings

2.3 Equipment

A. Valves shall close drip tight at rated pressures.

B. Unless otherwise shown, install valves in horizontal runs of pipe having centerline elevations no higher than 4’ 6” above floor with operating stems vertical.

C. Gear actuators shall conform to applicable requirements of AWWA C541 and C542.

D. Where possible, actuators shall be self-locking to prevent disc or plug from creeping.

E. Unless otherwise specified valves shall be furnished with actuators conforming to the following:

ITEM DESCRIPTION

Buried Valves Valve Can and Cover Provide as shown above except in manholes, vaults, tunnels, or pipe trenches Actuator 2” AWWA nut Extension Stem Connector to Actuator

Square socket to fit actuator nut

Extension Stem Refer to WDS-119 for valve extension.

Stop-Limiting Devices Provide for open and closed positions.

Devices shall be adjustable without disassembling gear box

Enclosure Design for short-term immersion in water and for buried service Provide watertight shaft seals and watertight valve and actuator cover gaskets

Lubrication Oil-lubricated Position Indicator Design to fit inside standard valve box.

Indicator shall show valve position and direction and number of turns required to fully open or close valve.

Position Transmitter Not required Actuators on Manual Butterfly, Ball and Plug Valves 4”-20”

Worm-and-gear or traveling-nut type gear actuators.

Size actuator per AWWA C504 for bi-directional pressures.

Actuators on Manual Butterfly, Valves 24”-54”

Worm-and-gear type gear actuators.

Size actuator per AWWA C504 for bi-directional pressures.

Actuators on Ball and Plug Valves ≥ 24”

Worm-and-gear type gear actuators.

Actuators on Motorized Butterfly, Ball and Plug valves

Worm-and-gear type gear actuators.

Floor Stands and Extension Stems

Non-rising stem SAE Type 316 stainless steel extension stems, couplings, and stem guide brackets spaced such that L/R does not exceed 150.

SAE Type 316 stainless steel anchor bolts.

F. Worm-gear actuators shall conform to the following:

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ITEM DESCRIPTION

Worm Gear Actuators Design “Self-locking” one-piece design

Conform to AWWA C541 Allowable Input Torque – Handwheel, Chainwheel, Lever, or Crank Actuators

200 lbf against stop limiting devices with no damage

Allowable Input Torque – Operating Nuts

300 ft-lbf against stop limiting devices with no damage

G. Butterfly valve must have worm-gear actuators.

H. Worm-gear actuators for valves < 24” shall rotate valve element (disc, plug, or ball) from fully closed to fully open position with number of turns of actuator nut or wheel not exceeding 2 x nominal valve diameter.

I. Spur gear assemblies shall be integrally mounted to actuator by accepted means and shall meet component and torque requirements specified herein.

J. Furnish special tools, wrenches and appliances needed to adjust, operate, maintain or repair valve operators supplied.

PART 3 - EXECUTION

3.1 Preparation

A. Install valves and equipment so as to be easy to operate and service. Where geometry of manufactured valves and equipment and field conditions make it difficult or impossible for average workers to operate or service installed valve or piece of equipment, notify Owner’s Representative of conflict before installing valve or item of equipment.

3.2 Installation

A. Furnish and install valve operators on valves at locations shown on Plans and Submittals.

B. The following installation standards shall be followed:

1. Applicable OSHA and Cal OSHA regulations.

2. Manufacturer’s installation and warranty requirements.

C. Install operators and extensions to tolerances recommended by Manufacturer. Unless otherwise shown, install manual valve operators true, plumb, and level using precision gauges and levels.

D. Support valve boxes and keep centered during backfill

1. Center of valve box shall be within ½” of valve operating nuts.

2. Valve box shall be plumb to within 5°

3. Do not use beveled pipe sections at top of valve box extension pipe.

4. Top cut shall be square and machine-made.

5. Where pavement has not been placed, extend valve box extension risers for key valves well above ground to facilitate location for emergency shutoffs.

6. Final valve box elevation shall be flush with pavement or as shown in Long Beach

Water Department Standard Drawing WDS119.

3.3 Field Quality Control

A. Field testing shall include:

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ITEM TEST FOR

TEST STANDARD

(ASTM OR OTHER TEST STANDARD) FREQUENCY

FIRST

TEST PAID

FOR BY

RETESTS

PAID

FOR BY

Valve Boxes Plumb Center of valve box shall be within ½” of valve operating nuts and valve box shall be plumb to within 5°.

1 inspection Owner Owner

Elevation Valve box shall be flush with finished pavement

1 inspection Owner Owner

11-month Warranty Inspection

Confirm Work conforms to Contract Documents and Manufacturer’s printed literature

1 test Owner Contractor

3.4 Adjusting and Lubricating

A. Valve box cover elevations are not shown on Plans. Determine and set cover elevations in field so finished rim elevations are flush with finished pavement where directed by Owner's Representative.

END OF SECTION

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