A22 Solicitation W912EK24R0033 Amendment 0002 Lock 16 FRP Tainter Valves.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

The purpose of Amendment 0002 on Solicitation W912EK24R0033 is as follow s: Modif ications made to Section 01 20 00, Section 01 33 16, Section 06 90 00, Section 35 20 16, and the Draw ings. All other terms and conditions remain unchanged.

1. CONTRACT ID CODE PAGE OF PAGES

1 2

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY 28-Aug-2024

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street , County, State and Zip Code) X W912EK24R0033

X 9B. DATED (SEE ITEM 11)

12-Aug-2024

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer is extended, X is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning 1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN

REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

28-Aug-2024

CODE

CONTRACTING DIVISION

US ARMY CORPS OF ENGINEERS 1500 ROCK ISLAND D

ROCK ISLAND IL 61201

W912EK 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

2 24R0033

AMD 0002

The following modifications are made to the SECTION 01 20 00, SECTION 01 33 16, SECTION 06 90 00, SECTION 35 20 16, and the DRAWINGS.

SECTION 01 20 00

b. PAGES 3 AND 4. Delete Section 01 20 00 Pages 3 and 4 in their entirety, and substitute therefor revised Section 01 20 00 Pages 3 and 4, Amendment 0002, dated 27 August 2024.

SECTION 01 33 16

c. PAGES 15 AND 26. Delete Section 01 33 16 Pages 15 and 26 in its entirety, and substitute therefor revised Section 01 33 16 Pages 15 and 26, Amendment 0002, dated 27 August 2024.

SECTION 06 90 00

d. PAGES 1, 8, 12, 13, 16 AND 20. Delete Section 06 90 00 Pages 1, 8, 12, 13, 16 and 20 in its entirety, and substitute therefor revised

Section 06 90 00 Pages 1, 8, 12, 13, 16 and 20, Amendment 0002, dated 27 August 2024.

SECTION 35 20 16

d. PAGE 12. Delete Section 35 20 16 Page 12 in its entirety, and substitute therefor revised Section 35 20 16 Page 12, Amendment 0002, dated 27 August 2024.

DRAWINGS (SUPERSEDED)

e. Revised drawings listed below are being issued with this Amendment. Such revised drawings supersede those of the same sheet identification numbers listed in the INDEX OF DRAWINGS provided with Solicitation No. W912EK24R0033:

S-003

ATTACHMENTS: Section 01 20 00 Pages 3 and 4; Section 01 33 16 Page 26;

Section 06 90 00 PAGES 1, 8, 12, 13, 16 AND 20; S-003

2 24R0033

The following modifications are made to the SECTION 01 20 00, SECTION 01 33 16, SECTION 06 90 00, SECTION 35 20 16, and the DRAWINGS.

SECTION 01 20 00

b. PAGES 3 AND 4. Delete Section 01 20 00 Pages 3 and 4 in their entirety, and substitute therefor revised Section 01 20 00 Pages 3 and 4, Amendment 0002, dated 27 August 2024.

SECTION 01 33 16

c. PAGES 15 AND 26. Delete Section 01 33 16 Pages 15 and 26 in its entirety, and substitute therefor revised Section 01 33 16 Pages 15 and 26, Amendment 0002, dated 27 August 2024.

SECTION 06 90 00

d. PAGES 1, 8, 12, 13, 16 AND 20. Delete Section 06 90 00 Pages 1, 8, 12, 13, 16 and 20 in its entirety, and substitute therefor revised

Section 06 90 00 Pages 1, 8, 12, 13, 16 and 20, Amendment 0002, dated 27 August 2024.

SECTION 35 20 16

d. PAGE 12. Delete Section 35 20 16 Page 12 in its entirety, and substitute therefor revised Section 35 20 16 Page 12, Amendment 0002, dated 27 August 2024.

DRAWINGS (SUPERSEDED)

e. Revised drawings listed below are being issued with this Amendment. Such revised drawings supersede those of the same sheet identification numbers listed in the INDEX OF DRAWINGS provided with Solicitation No. W912EK24R0033:

S-003

ATTACHMENTS: Section 01 20 00 Pages 3 and 4;

Section 01 33 16 Pages 15 and 26;

Section 06 90 00 Pages 1, 8, 12, 13, 16 and 20;

Section 35 20 16 Page 12; S-003

Steel Component Design

a. Design of the Trunnion Yoke

b. Design of the Trunnion Pin

Bronze Component Design

a. Design of the Trunnion Yoke Bushing

Quality Control Plan

Design and Fabrication Schedule

Design Submittals

Pre-Design Meeting, Recurring Design Meetings, and Conferences

All reviews, review preparation, review coordination

Implementation of review comments and review certification

Final Design Submission

1.2.1.2 Unit of Measure

Unit of measure: job.

1.2.2 Computational Fluid Dynamics (CFD) Models

1.2.2.1 Payment

Payment for all costs associated with the development, analysis, and report of the Computation Fluid Dynamic Models will be made for Item No.

0002, "Base Bid - Computational Fluid Dynamics (CFD) Models."

Such price includes, but is not limited to, developing the model for the baseline condition of the existing steel Tainter Valve, developing the model for the new FRP Tainter Valve after the 90% Interim Review submittal, CFD Model simulations, and development of the final report.

1.2.2.2 Unit of Measure

Unit of measure: job.

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1.2.3 FRP Tainter Valve Delivery

1.2.3.1 Payment

Payment for all costs associated with the delivery of the FRP Tainter Valve structures will be made for the following:

Item No. 0004, "Base Bid - FRP Tainter Valve Delivery;"

Item No. 0102, "Option A - FRP Tainter Valve Delivery;"

Item No. 0202, "Option B - FRP Tainter Valve Delivery;" and

Item No. 0302, "Option C - FRP Tainter Valve Delivery;" as applicable.

Such price includes, but is not limited to, packaging of items for shipment to prevent damage, loading of tainter valves on delivery vehicle, permits, fees, transportation of the valve from shop facility to destination, preparation for offloading by Government, final inspection, and touch-up painting of the valve components, as necessary.

If the FRP Tainter Valves are of modular design, and are to be delivered unassembled to the site, and final assembled on site, include all material, labor, and equipment costs for complete assembly of the valve components. Costs for final control dimension verification and documentation should also be included in this CLIN.

1.2.3.2 Unit of Measure

Unit of measure: job.

1.2.4 Laminate Property Tests

1.2.4.1 Payment

Payment for all costs associated with the laminate property tests will be made for Item No. 0401, "Option D - Laminate Property Tests".

Such price includes, but is not limited to, laminate property tests on the laminate selected for the project. If the Contractor can provide these test results on an existing laminate from a project within the last five years, using all of the same materials that will be used under this project, the laminate property tests will not need to be repeated and the option will not be awarded .

1.2.4.2 Unit of Measure

Unit of measure: job.

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c. Organize project sections not based on UFGS in accordance with CSI MasterFormat and UFC 1-300-02.

2.3.2 Identification of Manufacturer's Product Data Used as Specifications.

Provide complete and legible catalog cut sheets, product data, installation instructions, operation and maintenance instructions, warranty, and certifications for products and equipment for which final material and equipment choices have been made. Indicate, by prominent notation, each product that is being submitted including optional manufacturer's features, and indicate where the product data shows compliance with the Contract requirements.

2.3.3 Specifications Packaging

Provide specifications to include the following:

a. Cover sheet and project table of contents.

b. Specification sections, each section with a table of contents.

c. Manufacturer's Product Data. If providing as attachments to the applicable specification section, incorporate as attachment reference within the section and section table of contents.

2.3.4 Specification Deliverable

Submit a bundled specification package in PDF format for each design package. As a minimum, bookmark each specification section in the bundled package. Also, submit the source files, in the processing system format, used to create the PDF.

2.4 DESIGN ANALYSIS

Prepare, organize, and present a design analysis that will document the general parameters, functional and technical requirements, design objectives, design assumptions, and provides design calculations applicable to the project's design. Organize the design analysis into three parts; Part 1 - General Description; Part 2 - Design Requirements and Provisions; and Part 3 - O&M Provisions.

The design analysis states the purpose, authorization, applicable criteria and the project description for the project, and provides a summary of the factors influencing the choice of the environmental, structural, mechanical, and material design features used in the project along with an indication of how the initial costs and life cycle costs were factored into final selections , if applicable . In the final design analysis clearly and succinctly include:

a. An introductory description of the project concepts that addresses the salient points of the design .

b. Deleted

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3.5.1 Submission Review

After receipt of an Interim Design submission, the Government requires 30 calendar days after receipt of the submission to review and comment on the interim design submittal. For smaller design packages, especially those that involve only one or a few separate design disciplines, the parties may agree on a shorter review period or alternative review methods (e.g., over-the -shoulder or electronic file sharing), through the partnering process.

a. For each interim design review submittal, the Contracting Officer will furnish a single consolidated, validated set of comments from the various design sections and from other concerned agencies involved in the review process using the ProjNet System. The review will be for conformance with the technical requirements of the Contract.

b. The Government reserves the right to reject design document submittals if comments are deemed significant.

c. Furnish disposition of all comments, in writing, through ProjNet. If there are technical disagreements with any comments, clearly outline, with justification, the reasons for disagreement and noncompliance within seven calendar days after receipt of these comments.

d. The Contractor is cautioned that if it believes the action required by any comment exceeds the requirements of this contract, that it should take no action and notify the Contracting Officer in writing immediately.

3.6 FINAL DESIGN REQUIREMENTS

Provide final design submittals that consist of 100 percent complete drawings, specifications, submittal register, design analyses, and design documentation report for Government review and acceptance. The Government requires 30 calendar days after receipt of the submission to review and comment on the final design submittal.

a. Deleted

b. In order to expedite the final design review, prior to the conference, ensure that the design configuration management data and all review comment resolutions are up-to-date.

c. Perform independent technical reviews and back-checks of previous comment resolutions. For independent design reviews, provide, as a minimum, identification of the Independent Technical Review (ITR) team, the ITR review comments, responses and the record of resolution of the comments, and certification form.

3.6.1 Design Drawings

Submit drawings complete with all contract requirements incorporated into the documents to provide a 100 percent design for each package submitted.

In addition to all native Advanced Modeling files, provide separate electronic files in a PDF format.

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SECTION TABLE OF CONTENTS

DIVISION 06 - WOOD, PLASTICS, AND COMPOSITES

SECTION 06 90 00

FIBER-REINFORCED POLYMER (FRP) COMPOSITE STRUCTURE

PART 1 GENERAL

1.1 REFERENCES

1.2 SUBMITTALS

1.3 SUBMITTAL REQUIREMENTS

1.3.1 Prefabrication Submittals

1.3.1.1 Manufacturer Qualifications

1.3.1.2 Fabrication Plan

1.3.1.3 Color Samples

1.3.2 Shop Drawings

1.3.2.1 Fabricated Models and Drawings

1.3.3 Product Data

1.3.3.1 Structure Technical Data

1.3.4 Test Reports

1.3.4.1 Baseline Mechanical Property Tests

1.3.4.2 Strength Tests

1.3.5 Certificates

1.3.5.1 Date and Type of Manufacture Including Constituent

Materials

1.4 DEFINITIONS

1.5 QUALITY CONTROL

1.5.1 General

1.5.2 Detail Drawings

1.5.3 As-Fabricated Models and Drawings

1.5.4 Witness Points

1.5.5 Quality Assurance Testing by the Government

1.6 DELIVERY, STORAGE, AND HANDLING

1.7 WARRANTY

1.8 STRUCTURE IDENTIFICATION

1.8.1 Lock 16 Tainter Valve Hydraulic Structure Identification

PART 2 PRODUCTS

2.1 SYSTEM DESCRIPTION

2.1.1 Design Requirements

2.1.2 Performance Requirements

2.2 MATERIALS

2.2.1 FRP Composites

2.2.2 Holes in Composite Structure

2.2.3 Design Properties

2.2.3.1 Design Properties of FRP Laminates

2.2.3.2 Design Properties of FRP Structure Members

2.2.3.3 Material Properties of Foam Core

2.2.3.4 Laminate Properties Test

2.2.4 Embedded Steel

2.2.5 Adhesives for Structural Connections

2.2.5.1 Testing of Adhesive

2.2.6 Bolted Connections

SECTION 06 90 00 Page 1

1.5.5.1 Steel Component Testing

1.5.5.2 Government Requested Testing

1.5.5 Quality Assurance Testing by the Government

1.5.5.1 Steel Component Testing

The following critical steel connections must be ultrasonically tes te d for soundness:

a. All structural connections between valve components which incorporate welded steel components.

b. Lifting pad eye welds.

1.5.5.2 Government Requested Testing

Material component parts may be subjected to any form of nondestructive testing, as requested and directed by the Contracting Officer. This may include ultrasonic (UT) or any other test that will thoroughly investigate the part in question. The cost of such investigation will be borne by the Government. Any defects will be cause for rejection and rejected materials or parts will be replaced and retested at no additional cost to the Government.

1.6 DELIVERY, STORAGE, AND HANDLING

Submit recommendations for shipping, handling, storage, procedures and delivery plan, data care, and maintenance instructions. Deliver manufactured materials in original, unbroken pallets, packages, containers, or bundles bearing the label of the manufacturer. Ensure all related adhesives, resins and their catalysts and hardeners are crated or boxed separately, and noted as such to facilitate their movement to a dry indoor storage facility under controlled temperature and humidity.

Handle, store, and ship all materials to in such a manner as to prevent abrasion, cracking, chipping, twisting, other deformations, and other types of damage that would degrade quality serviceability, or appearance.

Store adhesives, resins and their catalysts in dry indoor storage facilities following MDS requirements.

1.7 WARRANTY

Furnish manufacturer's no-dollar-limit warranty for the FRP composite structures. The warranty period is to be no less than 24 months from the date of final acceptance of the structure and be issued directly to the Government. The warranty must provide that if within the warranty period, the composite structures or components show evidence of deterioration resulting from defective materials and/or workmanship, correcting of any defects is the responsibility of the manufacturer.

1.8 STRUCTURE IDENTIFICATION

Replacement valves must have a permanently affixed plate with the replacement valves gross weights and structure identifications. Provide permanently affixed plates of stainless steel or HDPE. Each valve must be weighed in the fabrication shop. Markings must be visible when viewing the structures from above and must be a minimum font size of 4 inches.

Include the identification plate location with the valve fabrication drawings for Government approval prior to affixing.

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Property Test Method Polyiso (2 lbs.)

Units Limits

Water Absorption ASTM C272/C272M 0.7 percent by volume

Maximum

Closed Cell Content

ASTM D6226 95 percent Minimum

Embedded steel may be used to meet the specified weight, stiffness, and center of gravity requirements, but must be submitted to the Contracting Officer or other approved representative for approval and must be completely encased in a minimum of 1/2 inch thick FRP. Steel must meet ASME/ASTM standards, be chemically treated to interface with the FRP, be fully encapsulated in the FRP structure, and design submittals must account for the potential for the FRP to delaminate from the embedded steel. If the embedded steel is used for structural connections, the embedded fastener inserts must be stainless steel, with grade/type appropriate for a salt water marine environment. Reference paragraph EMBEDDED STEEL when embedded metals are used in conjunction with the composite structures.

2.1.1 Design Requirements

Unless otherwise approved by the Contracting Officer, the following design requirements must be met:

a. The structures must be designed in accordance with this Specification to achieve the objectives of constructability, safety, serviceability, with due regard to issues of inspectability, and economy.

b. Maximum allowable axial and bending strain in the FRP structures must be limited to 20 percent of strain to failure. Maximum allowable shear strain must be limited to 20 percent of strain to failure.

Failure will be taken as the design property determined by the ASTMs listed in paragraphs DESIGN PROPERTIES OF FRP LAMINATES and MATERIAL PROPERTIES OF FOAM CORE, reduced statistically to the 80 percent lower confidence bound on the 5th-percentile value of the tested population per ASTM D7290.

c. The nominal strength must be determined by multiplying the reference strength by environmental reduction factors such as time effect factor, moisture condition factor (CM) (use lower limit regardless of material), and temperature factor (CT), T=100F, as specified in ASCE 74-23 Load Resistance Factor Design (LRFD) for Pultruded Fiber Reinforced Polymer (FRP). Adjustment factors (strength and stiffness) for structural assemblies are not permitted.

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d. Submit documentation showing the structures are capable of meeting the maximum allowable bending strain and shear strain prior to commencement of work.

e. Design calculations must show that the major structural elements and connections have a HSS service life of a minimum 100 years such as material durability (e.g. environment, fatigue, etc) and structural member deflections are limited to the length (in inches) divided by 300 .

f. All design computations must be stamped by a registered Professional Engineer who will be identified as the Engineer of Record. All design computations must also be initialed by an additional registered Professional Engineer who will be identified in the design documents as having provided design quality control. See Section 01 78 02 CLOSEOUT SUBMITTALS for additional requirements.

g. Thermal effects must be considered when designing the FRP tainter valves to ensure that any contraction or expansion is accommodated.

Similarly, seals must also be designed to allow for thermal expansion and contraction. Design the FRP structures to account for thermal expansion such that the structures operate properly and do not bind on the rails or slots during use. Use the historic high and low temperatures at the project sites to determine the thermal range.

Submit the thermal expansion design with the FRP structure design calculations.

2.1.2 Performance Requirements

Submit documentation that the structure meets the weight and center of gravity requirements, as specified.

2.2 MATERIALS

Miscellaneous materials and standard articles must conform to the respective standards or specifications below when that type of material is furnished. Where material requirements are not specified, materials furnished must be suitable for the intended use and are subject to approval.

2.2.1 FRP Composites

Submit documentation showing that epoxy vinyl ester resins suitable for long-term salt-water exposure were used for fabrications of the structures for maximum resistance to environmental and operational conditions.

Comply with ASTM E84 Class II at a minimum for the vinyl ester resin flame retardness. Materials such as additives, UV inhibitors, fillers and pigments that are appropriate with the vinyl ester resin are permitted to meet requirements such as color and environmental protection. All pigments are to be polydispersion liquid pigments.

Submit documentation showing that FRP laminates are assembled using commercial grade E-CR Glass fiber reinforcement meeting ASTM D578 and ASTM D4029/D4029M. Fiber reinforcement is to be woven or stitched into unidirectional and multi-directional fabrics prior to assembly.

Non-structural fiber mats may be used to meet exterior finish and environmental requirements. Random reinforcement such as chopped glass is prohibited as a structural member.

Submit documentation showing FRP composites meet the material properties used in the design as per the applicable ASTM test requirements.

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SECTION 06 90 00 Page 13

Property Value Units Minimum or Range

Secondary Direction (90 degre es)

20 ksi Minimum

Compression Strength (ASTM D3410/D3410M / ASTM D6641/D6641M)

Primary Direction (0 degrees)

30 ksi Minimum

Secondary Direction (90 degrees)

20 ksi Minimum

In Plane Shear Strength of Vertical Core Webs (0/90 degrees)

(ASTM D3518/D3518M)

14 ksi Minimum

Impact Toughness 18 foot-pound/inch Minimum

Barcol Shore-A 45 Minimum

Design contractor to provide minimum creep rupture requirements.

2.2.3.2 Design Properties of FRP Structure Members

When completed, each of the FRP Structure members should have the following minimum properties: (Designer to fill in values and submit with design specifications)

Property Value Units

Moment Capacity kip-ft

Bending Stiffness, EI lbf in^2

Shear Capacity kip

Panel Crushing Strength psi

Moisture Absorption Upper Limit

(ASTM D5229/D5229M)

When completed, each of FRP Structures must meet the following minimum weight and center of gravity (COG) requirements. In this instance, the weight must include all components of the valve, including the steel and rubber portions.

Primary Direction (0 degrees)

30 ksi Minimum

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2.3.4 As-Fabricated Control Dimensions and Weights

Submission requirements are detailed under 35 20 16 TAINTER VALVES. For squareness, the diagonal distances between opposing corners on the same face will be within 1/4 inch. For planarity, any one of the four corners on a face is to deviate no more than 1/4 inch from the plane formed by the other three corners.

Dimensional and Weight Tolerances

Dimensions (as indicated) Tolerance

Overall Structure Depth plus or minus 1/4 inch

Straightness (bow) plus or minus 1/8 inch per 10 feet

Structure Length and Width plus or minus 1/4 inch

Weight plus or minus 5 percent of the existing steel Tainter Valve structure weight of

25 kips

Center of Gravity plus or minus 2.5 percent along the radial direction of the structure as designated by the 11' - 8-1/8" dimension shown on the drawings

Squareness Diagonal distances between opposing corners on the same face will be within

1/4 inch.

Planarity Any one of the four corners on a face is to deviate no more than 1/4 inch from the plane formed by the other three corners.

A structure weight deviation of more than plus or minus 5 percent of the theoretical structure is cause for rejection of the entire structure.

Weight of center of gravity dimension may be altered with approval of an official request for variance with support documentation of modeling results. Each structure must meet all control dimensions, tolerances, and design requirements.

2.3.5 Delivery Drawings

Delivery drawings must provide descriptions of methods of delivering components to the site, including details for supporting fabricated components during shipping to prevent distortion or other damages.

2.4 TESTS, INSPECTIONS, AND VERIFICATIONS

Submit certified material test reports with all material delivered to the site. Tests, inspections, and verifications for materials and fabricated items must conform to the requirements specified.

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2.4.1 General

Tests, inspections, and verifications for materials must conform to the specified requirements. Submit certified test reports for material tests, with all materials delivered to the site.

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Lay out all work to secure proper matching of adjoining unfinished surfaces unless otherwise directed. Where there is a large discrepancy between adjoining unfinished surfaces chip and grind smooth or machine to secure proper alignment. Unfinished surfaces to be true to the lines and dimensions shown and be chipped or ground free of all projections and rough spots.

2.3.3 Structural Steel Fabrications

Material must be straight before being laid off or worked. Perform straightening by methods that will not impair the metal. Material will be rejected for sharp kinks or bends. Use approved dies, press brakes, or bending rolls to make bends.

2.3.3.1 Tainter Valve

Provide in accordance with the requirements as shown and specified herein and in Section 06 90 00 FIBERGLASS REINFORCED POLYMER (FRP) COMPOSITE STRUCTURE. Shop-fabricate the components of the materials specified and shown. Dimensional tolerances are as specified and shown. Provide bolted connections, lugs, clips, or other pick-up assembly devices for components as shown and required for proper assembly and installation.

2.3.3.2 Trunnion Yokes

Provide trunnion yokes as a forging. A casting may be acceptable upon request and approval of the Engineer. Bore pin holes in the trunnion yoke assembly after any welding, straightening, stress-relieving, bolting and threading operations are completed. Straighten components by method which will not damage the material. Press-fit bushings with supporting components.

2.3.3.3 Appurtenant Items

Provide cable attachment brackets, side seal plates, sill beams, and other appurtenant items in conformance with the requirements specified and shown on the drawings. Ensure all sealing surfaces of side seal plates and sill beams are flush, straight, and free from offsets, warps, twists or other distortions.

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2.3.2.2 Unfinished Surfaces

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SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

(End of Summary of Changes)