A22 - W912EK23R0006 AMEND_0001.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

A summary of changes are as follow s:

• Add Lock 14 as an allow able alternate delivery location.

• Correct quantity typo on plans w here one page listed 4 and another listed 14.

• Update to allow for casting, rather than only forging or w eldment, of several parts.

• Change allow able steel type for non-fracture-critical members.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 2

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

16C. DATE SIGNED

BY 23-May-2023

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 W912EK23R0006

X 9B. DATED (SEE ITEM 11)

02-May-2023

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 X is extended, 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

23-May-2023

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:

W912EK23R0006

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION A - SOLICITATION/CONTRACT FORM

The required response date/time has changed from 01-Jun-2023 02:00 PM to 06-Jun-2023 02:00 PM.

(End of Summary of Changes)

The following modifications are made to Section 01 11 00, SECTION 01 33 00, Section 05 59 20 and DRAWINGS.

SECTION 01 11 00

a. PAGE SECTION 01 11 00 PAGE 2. Delete page SECTION 01 11 00 PAGE 2 in its entirety, and substitute therefor revised page SECTION 01 11 00 PAGE 2.

SECTION 01 33 00

b. PAGE SECTION 01 33 00 SUBMITTAL REGISTER ATTACHMENT A. Delete page SECTION 01 33 00 SUBMITTAL REGISTER ATTACHMENT A in its entirety, and substitute therefor revised page SECTION 01 33 00 SUBMITTAL REGISTER ATTACHMENT A.

SECTION 05 59 20

DRAWINGS (SUPERCEDED)

d. Revised drawings listed below are being issued with this Amendment. Such revised drawings supersede those of the same sheet identification numbers as listed in the INDEX OF DRAWINGS: S-001, S-102, S-504, S-506, S-507, S-508, &

S-509.

SOLICITATION NO.: W912EK23R0006

B5MRLD13202201

AMEND 0001

17 MAY 2023

c. PAGES SECTION 05 59 20 PAGE 1 THROUGH SECTION 05 59 20 PAGE 28. Delete pages SECTION 05 59 20 PAGE 1 through SECTION 05 59 20 PAGE 28, in their entirety, and substitute therefor revised pages SECTION 05 59 20 PAGE 1

THROUGH SECTION 05 59 20 PAGE 28.

SECTION 01 11 00

SUMMARY OF WORK

PART 1 GENERAL

1.1 SUMMARY OF WORK

The work includes, but is not limited to, the fabrication and delivery of Tainter valve assemblages, appurtenant items, trunnion hubs and yokes with bolts and pins, wire rope with attached sockets, painting, and assembly of items.

1.1.1 Base Bid

The work to fabricate and deliver theTainter valve assemblages.

1.1.2 Option A

The work to fabricate the Tainter valve assemblage.

1.1.3 Option B

The work to fabricate the Tainter valve assemblage.

1.2 PROJECT LOCATION

Deliver to Lock and Dam 13 in the Mississippi River Basin, Fulton, Fulton County, Illinois or to Lock and Dam 14 in the Mississippi River Basin, LeClaire, Scott County, Iowa.

PART 2 PRODUCTS

Not Used

PART 3 EXECUTION

Not Used

-- End of Section --

SECTION 01 11 00 Page 2

AMEND 0001

17 MAY 2023

SUBMITTAL FORM,Jan 96 PREVIOUS EDITION IS OBSOLETE PAGE 1 OF 4 PAGES

00 73 05 SD-01 Preconstruction Submittals

G SLCompany Enrollment in E-Verify

1.4.1 G SLForm I-9

SD-07 Certificates

1.12 GECDSWarranties

01 32 16 SD-01 Preconstruction Submittals

1.2 GECDSFabrication Schedule

1.4 GECDSFabrication Schedule

SD-07 Certificates

1.6Monthly Updates

01 45 00 SD-01 Preconstruction Submittals

1.7.2.1 GPay Activity Data

01 45 04 SD-01 Preconstruction Submittals

3.2 GECDMFabricator Quality Control (FQC)

Plan

01 78 00 SD-11 Closeout Submittals

1.3.1 GECDMFinal As-Fabricated Drawings

And Models

05 59 20 SD-01 Preconstruction Submittals

1.3 GECDSWork Plan

2.2.3 GECDSAssembly And Fabrication

Sequencing Plan

1.5 GECDSDelivery/Shipping Plan

2.3.7 GECDSWelding Repairs - Non-Fracture

Critical Members

SUBMITTAL REGISTER

CONTRACT NO.

TITLE AND LOCATION CONTRACTOR

CONTRACTOR:

SCHEDULE DATES

CONTRACTOR

ACTION

APPROVING AUTHORITY

A C T I V I T Y

N O

T R A N S M I T T A L

N O

S P E C

S E C T

DESCRIPTION

ITEM SUBMITTED

P A R A G R A P H

C L A S S I F I C A T I O N

G O V T

O R

A E

R E V W

R SUBMIT

APPROVAL

NEEDED

BY

MATERIAL

NEEDED

BY

A C T I O N

C O D E

DATE

OF

ACTION

DATE FWD

TO APPR

AUTH/

DATE RCD

FROM

CONTR

DATE FWD

TO OTHER

REVIEWER

DATE RCD

FROM OTH

REVIEWER

A C T I O N

C O D E

DATE

OF

ACTION

MAILED

TO

CONTR/

DATE RCD

FRM APPR

AUTH REMARKS

(a) (b) (c) (d) (e) (f) (g) (h) (i) (j) (k) (l) (m) (n) (o) (p) (q) (r)

ATTACHMENT A TO SECTION 01 33 00

SUBMITTAL FORM,Jan 96 PREVIOUS EDITION IS OBSOLETE PAGE 2 OF 4 PAGES

05 59 20 2.3.7 GECDSWelding Repairs - Fracture

Critical Members

1.4.7 GECDSFabrication Log Template

1.3.5 GECDSNonconformance Report Form

Template

2.2.2.1 GECDSFabrication And Field Dimension

Control Plan

1.3.2 GECDSWelding Procedure Specifications

(WPS)

1.3.3.1 GECDSFracture Control Plan (FCP)

SD-02 Shop Drawings

1.4.6 GECDSShop Drawings

2.4 G ECDSCastings

SD-03 Product Data

2.2.4Materials Disposition Record

SD-06 Test Reports

2.3 GECDSCertified Test Reports

1.4.8 GECDSFabrication Log

GECDSBolt Inspection and Testing Log

SD-07 Certificates

1.4.2 GECDSQualification of Welders and

Welding Operators

1.4.3 GECDSInspector Qualifications

1.4.4 GECDSQualification of Structural Steel

Fabricator

2.3.3.2.1 GECDSNDT Inspector Certification

SUBMITTAL REGISTER

CONTRACT NO.

TITLE AND LOCATION CONTRACTOR

CONTRACTOR:

SCHEDULE DATES

CONTRACTOR

ACTION

APPROVING AUTHORITY

A C T I V I T Y

N O

T R A N S M I T T A L

N O

S P E C

S E C T

DESCRIPTION

ITEM SUBMITTED

P A R A G R A P

A S S I F I C A T I O N

G O V T

O R

A E

R E V W

R SUBMIT

APPROVAL

NEEDED

BY

MATERIAL

NEEDED

BY

A C T I O N

C O D E

DATE

OF

ACTION

DATE FWD

TO APPR

AUTH/

DATE RCD

FROM

CONTR

DATE FWD

TO OTHER

REVIEWER

DATE RCD

FROM OTH

REVIEWER

A C T I O N

C O D E

DATE

OF

ACTION

MAILED

TO

CONTR/

DATE RCD

FRM APPR

AUTH REMARKS

(a) (b) (c) (d) (e) (f) (g) (h) (i) (j) (k) (l) (m) (n) (o) (p) (q) (r)

SUBMITTAL FORM,Jan 96 PREVIOUS EDITION IS OBSOLETE PAGE 3 OF 4 PAGES

05 59 20 SD-09 Manufacturer’s Field

Reports

2.3.8 GECDSControl Dimensions and Weight

09 97 02 SD-01 Preconstruction Submittals

GECDSPreparation and Painting

Management Program

Equipment List

SD-03 Product Data

GECDSSafety Data Sheet

GECDSPrimer For Slip Critical Joints

SD-04 Samples

2.1 GSampling and Testing

2.2 GECDSSpecial Paint Formulas

2.4.3 GECDSSolvent and Thinners

SD-07 Certificates

1.3.1 GECDSQualified Coating Applicator

GECDSQuality Control Inspector

Qualification

1.3.2 GECDSCoating Thickness Gage

Qualification

35 01 70 SD-01 Preconstruction Submittals

1.3 GECDGQualifications

SD-02 Shop Drawings

2.1.10 GECDGEnd Terminations

SD-03 Product Data

2.1.3 GECDGPre-Stretching

SUBMITTAL REGISTER

CONTRACT NO.

TITLE AND LOCATION CONTRACTOR

CONTRACTOR:

SCHEDULE DATES

CONTRACTOR

ACTION

APPROVING AUTHORITY

A C T I V I T Y

N O

T R A N S M I T T A L

N O

S P E C

S E C T

DESCRIPTION

ITEM SUBMITTED

P A R A G R A P

A S S I F I C A T I O N

G O V T

O R

A E

R E V W

R SUBMIT

APPROVAL

NEEDED

BY

MATERIAL

NEEDED

BY

A C T I O N

C O D E

DATE

OF

ACTION

DATE FWD

TO APPR

AUTH/

DATE RCD

FROM

CONTR

DATE FWD

TO OTHER

REVIEWER

DATE RCD

FROM OTH

REVIEWER

A C T I O N

C O D E

DATE

OF

ACTION

MAILED

TO

CONTR/

DATE RCD

FRM APPR

AUTH REMARKS

SUBMITTAL FORM,Jan 96 PREVIOUS EDITION IS OBSOLETE PAGE 4 OF 4 PAGES

35 01 70 2.1.12 GECDGEnd Termination Attachment

Method

SD-06 Test Reports

2.1.11 GECDGTension Testing

2.1.12 GECDGAttaching and Proof Loading

Terminations

2.1.4 GECDGWire Strength and Ductility

2.1.5 GECDGPre-Forming

2.1.6 GECDGStress Relief (Wrapping Test)

GECDGZinc Coating

2.1.10 GECDGEnd Terminations

SD-07 Certificates

1.5Warranty

2.1.2 GECDGWire Rope

SD-09 Manufacturer’s Field

Reports

1.4.2Delivery Report

SUBMITTAL REGISTER

CONTRACT NO.

TITLE AND LOCATION CONTRACTOR

CONTRACTOR:

SCHEDULE DATES

CONTRACTOR

ACTION

APPROVING AUTHORITY

A C T I V I T Y

N O

T R A N S M I T T A L

N O

S P E C

S E C T

DESCRIPTION

ITEM SUBMITTED

P A R A G R A P

A S S I F I C A T I O N

G O V T

O R

A E

R E V W

R SUBMIT

APPROVAL

NEEDED

BY

MATERIAL

NEEDED

BY

A C T I O N

C O D E

DATE

OF

ACTION

DATE FWD

TO APPR

AUTH/

DATE RCD

FROM

CONTR

DATE FWD

TO OTHER

REVIEWER

DATE RCD

FROM OTH

REVIEWER

A C T I O N

C O D E

DATE

OF

ACTION

MAILED

TO

CONTR/

DATE RCD

FRM APPR

AUTH REMARKS

SECTION TABLE OF CONTENTS

DIVISION 05 - METALS

SECTION 05 59 20

FABRICATION OF HYDRAULIC STEEL STRUCTURES

PART 1 GENERAL

1.1 REFERENCES

1.2 SUBMITTALS

1.3 SYSTEM DESCRIPTION

1.3.1 Weld Tracking Log

1.3.2 Welding Procedure Specifications (WPS)

1.3.3 Fracture Critical Members (FCM)

1.3.3.1 Fracture Control Plan (FCP)

1.3.3.2 Repair Welding

1.3.4 Material Tracking

1.3.5 Nonconformance Reports

1.4 QUALITY ASSURANCE

1.4.1 Test of Materials

1.4.2 Qualification of Welders and Welding Operators

1.4.3 Inspector Qualifications

1.4.4 Qualification of Structural Steel Fabricator

1.4.5 Testing by the Government

1.4.6 Shop Drawings

1.4.7 Fabrication Log Template

1.4.8 Fabrication Log

1.5 DELIVERY, STORAGE, AND HANDLING

1.6 SYMBOLS AND SAFETY

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 Structural Steel

2.1.1.1 Non-Fracture Critical Structural Steel

2.1.1.2 Fracture Critical Structural Steel

2.1.1.3 Structural Steel Plate

2.1.2 Bolts, Nuts and Washers

2.2 FABRICATION

2.2.1 Welding Equipment and Materials

2.2.2 Structural Fabrication

2.2.2.1 Dimensional Tolerances for Structural Work

2.2.2.2 Structural Steel Fabrication

2.2.2.3 Thermal Cutting of Structural Steels with 50,000 psi

Minimum Yield Strength or Higher

2.2.2.4 Sheared Edges

2.2.2.5 Control of Distortion and Shrinkage

2.2.3 Assembly

2.2.4 Materials Disposition Record

2.2.5 Welded Connections

2.2.5.1 Welding Procedure

2.2.5.2 Welding Process

SECTION 05 59 20 Page 1

2.2.5.3 Welding Technique

2.2.5.3.1 Filler Metal

2.2.5.3.2 Preheat and Interpass Temperature

2.2.5.4 Workmanship

2.2.5.4.1 Preparation of Base Metal

2.2.5.4.2 Tack and Temporary Welds

2.2.5.4.3 Weld Access Holes

2.2.5.4.4 Weld Backing Removal

2.2.5.4.5 Weld Backing Material Other Than Steel

2.2.6 Bolted Connections

2.2.6.1 Snug-Tight Bolted Connections

2.2.6.2 Pretensioned Bolted Connections

2.2.6.3 Slip-Critical Bolted Connections

2.2.6.4 Bolts, Nuts, and Washers

2.2.6.5 Bolt Holes and Pin Holes

2.2.6.6 Pin Holes

2.2.6.7 Rotational Capacity Tests

2.2.7 Miscellaneous Provisions

2.2.7.1 Weldments

2.2.7.2 Drain Holes

2.2.7.3 Seal Welds

2.2.7.4 Identification Plates

2.2.8 Shop Assembly

2.3 CERTIFIED TEST REPORTS

2.3.1 General

2.3.2 Nondestructive Testing

2.3.3 Inspection of Structural Steel Welding

2.3.3.1 Visual Examination

2.3.3.2 Nondestructive Examination

2.3.3.2.1 Testing Agency

2.3.3.2.2 Examination Procedure and Extent

2.3.3.2.3 Acceptability of Welds

2.3.3.2.4 Examination Procedures

2.3.3.2.4.1 Ultrasonic Testing (UT)

2.3.3.2.4.2 Radiographic Testing (RT)

2.3.3.2.4.3 Magnetic Particle Inspection (MT)

2.3.3.2.4.4 Dye Penetrant Inspection (PT)

2.3.4 Welds to be Subject to Nondestructive Examination

2.3.4.1 Complete Joint Penetration Groove Welds

2.3.4.2 Fillet Welds and Partial Penetration Groove Welds

2.3.4.3 Welds

2.3.5 Test Coupons

2.3.6 Supplemental Examination

2.3.7 Structural Steel Welding Repairs

2.3.8 Control Dimensions and Weight

2.3.9 Verification of Bolted Connections

2.4

2.4.1 Casting Patterns

2.4.2 Fabrication of Patterns and Core Boxes

2.4.3 Welding of Steel Castings

PART 3 EXECUTION

3.1 FABRICATION

3.1.1 Cleaning

3.1.2 Alignment and Setting

3.1.3 Bolt Retensioning

3.1.4 Lifting Lugs

3.2 PROTECTION OF FINISHED WORK

SECTION 05 59 20 Page 2

CASTINGS

3.3 PAINTING

3.4 GOVERNMENT WITNESS POINT INSPECTIONS

3.5

-- End of Section Table of Contents --

SECTION 05 59 20 Page 3

INSPECTION OF STEEL CASTINGS *

SECTION 05 59 20

FABRICATION OF HYDRAULIC STEEL STRUCTURES

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AMERICAN INSTITUTE OF STEEL CONSTRUCTION (AISC)

AISC 303 (2016) Steel Buildings and Bridges

AISC 325 (2017) Steel Construction Manual

AISC 326 (2009) Steel Construction

AISC 360 (2016) Structural Steel Buildings

AMERICAN SOCIETY FOR NONDESTRUCTIVE TESTING (ASNT)

ANSI/ASNT CP-189 (2020) Qualification and Certification of Nondestructive Testing Personnel

AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME)

ASME B46.1 (2020) Surface Texture, Surface Roughness, Waviness and Lay

AMERICAN WELDING SOCIETY (AWS)

AWS A2.4 (2012) Standard Symbols for Welding, Brazing and Nondestructive Examination

AWS A3.0M/A3.0 (2020) Welding Terms and Definitions

AWS D1.5M/D1.5 (2020; E 2022) Bridge Welding Code

AWS QC1 (2016) Certification of Welding Inspectors

AWS Z49.1 (2021) Safety in Welding and Cutting and Allied Processes

ASTM INTERNATIONAL (ASTM)

ASTM A307 (2021) Carbon Steel Bolts, Studs, and Threaded Rod 60 000 PSI Tensile Strength

ASTM A370 (2021) Standard Test Methods and Definitions for Mechanical Testing of Steel Products

ASTM A563 (2015) Carbon and Alloy Steel Nuts

SECTION 05 59 20 Page 4

ASTM A572/A572M (2021; E 2021) High-Strength Low-Alloy Columbium-Vanadium Structural Steel

ASTM A578/A578M (2007; R 2012) Straight-Beam Ultrasonic Examination of Rolled Steel Plates for Special Applications

ASTM A609/A609M (2012; R 2018) Standard Practice for Castings, Carbon, Low-Alloy, and Martensitic Stainless Steel, Ultrasonic Examination Thereof

ASTM A709/A709M (2021) Structural Steel for Bridges

ASTM A802 (2019) Standard Practice for Steel Castings, Surface Acceptance Standards, Visual Examination

ASTM A958/A958M (2017) Standard Specification for Steel Castings, Carbon and Alloy, with Tensile Requirements, Chemical Requirements Similar to Standard Wrought Grades

ASTM E165/E165M (2018) Liquid Penetrant Examination for General Industry

ASTM E446 (2020) Standard Reference Radiographs for Steel Castings Up to 2 In. (51mm) in Thickness

ASTM E709 (2021) Magnetic Particle Testing

ASTM F436/F436M (2019) Hardened Steel Washers Inch and Metric Dimensions

ASTM F3125/F3125M (2019) High Strength Structural Bolts and Assemblies, Steel and Alloy Steel, Heat Treated, Inch Dimensions 120 ksi and 150 ksi Minimum Tensile Strength, and Metric Dimensions 830 MPa and 1040 MPa Minimum Tensile Strength

RESEARCH COUNCIL ON STRUCTURAL CONNECTIONS (RCSC)

RCSC A348 (2020) Structural Joints Using High-strength Bolts

1.2 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Work Plan; G ECDS

SECTION 05 59 20 Page 5

Assembly And Fabrication Sequencing Plan; G ECDS Delivery/Shipping Plan; G ECDS Welding Repairs - Non-Fracture Critical Members; G ECDS Welding Repairs - Fracture Critical Members; G ECDS Fabrication Log Template; G ECDS Nonconformance Report Form Template; G ECDS Fabrication And Field Dimension Control Plan; G ECDS Welding Procedure Specifications (WPS); G ECDS Fracture Control Plan (FCP); G ECDS

SD-02 Shop Drawings

Shop Drawings; G ECDS Castings; G, ECDS

SD-03 Product Data

Materials Disposition Record

SD-06 Test Reports

Certified Test Reports; G ECDS Fabrication Log; G ECDS Bolt Inspection and Testing Log; G ECDS

SD-07 Certificates

Qualification of Welders and Welding Operators; G ECDS Inspector Qualifications; G ECDS Qualification of Structural Steel Fabricator; G ECDS NDT Inspector Certification; G ECDS

SD-09 Manufacturer's Field Reports

Control Dimensions and Weight; G ECDS

1.3 SYSTEM DESCRIPTION

Submit a detailed Work Plan for fabrication, including descriptions of shop facilities, equipment, number of personnel, and related information prior to the Prefabrication Conference, Include the recommended measuring system for ensuring dimensional tolerances in the Work Plan.

a. Material with welds will not be accepted unless the welding is specified or indicated or otherwise approved. Do not begin welding until welding procedures, inspectors, nondestructive testing personnel, welders, welding operators, and tackers have been qualified and approved. Each Contractor performing welding must maintain records of the test results obtained in welding procedure, and welder, welding operator, and tacker performance qualifications.

b. As used in the specifications, "The Engineer" refers to the District or engineer of record. The AWS D1.5M/D1.5 definition of "The Engineer" as specified in AWS D1.5M/D1.5 Application Clause refers to the District or engineer of record in lieu of the state bridge engineer as specified in the Application Clause of AWS D1.5M/D1.5 .

c. Schedule a Prefabrication Conference as specified in Section 00 73 05

SPECIAL CONTRACT REQUIREMENTS.

SECTION 05 59 20 Page 6

1.3.1 Weld Tracking Log

Submit, as part of the Fabrication Log, a log capable of individually identifying and tracking every weld on the project. Member identification must follow the numbering scheme shown on the shop drawings. Include in the log the member to be welded, member type (FCM and Non-FCM), type of weld including temporary and tack welds, welding position, applicable WPS reference, AWS joint preparation designation, name or stamping designation of welder, welding operator or tacker, date and time of completion of welding and/or tacking, name and date of CWI visual inspection, NDT testing performed, including the type of inspection, date(s) of inspection, inspector name, and the acceptance criteria used, description of defects found and reason for non-compliance, corrective action taken, or whether the weld is acceptable. Weld identification on the shop drawing must match weld tracking log identification. Bind together a completed log for each structure and submit two copies to the Contracting Officer immediately upon completion of the fabrication of each structure.

Furnish draft copies of NDT testing to the Contracting Officer upon request and have a copy available on the shop floor during any inspection.

1.3.2 Welding Procedure Specifications (WPS)

Submit, as part of the Fabrication Log, a Welding Procedure Specification (WPS), with supporting Procedure Qualification Records and supporting test documentation on forms similar or equivalent to the sample forms in AWS D1.5M/D1.5 for each weld, including prequalified welds, in accordance with paragraph "Welded Connections" approved before fabrication is commenced. Individually identify each Welding Procedure Specification and reference on the shop drawings. In case of conflict between this specification and AWS D1.5M/D1.5 as applicable, this specification governs. Submit each WPS with supporting PQR electronically in PDF file format with one WPS/PQR per electronic file.

1.3.3 Fracture Critical Members (FCM)

FCM are indicated and include all attachments and connections to these members in accordance with AWS D1.5M/D1.5 . All materials to be welded must be in accordance with ASTM A709/A709M , killed steel, grade as specified or shown. Use Grade 50 steel unless otherwise shown or specified. Mill repairs of base metal are prohibited. Unless otherwise indicated or specified, meet toughness requirements for fracture critical members in tension in accordance with ASTM A709/A709M for Zone 2. All materials used for the construction of fracture critical components in accordance with ASTM A709/A709M for fracture critical components. Welding for fracture critical members in accordance with AWS D1.5M/D1.5 AASHTO/AWS Fracture Control Plan (FCP) for Nonredundant Members Clause.

1.3.3.1 Fracture Control Plan (FCP)

Submit a Fracture Control Plan (FCP) for welding on all Fracture Critical Members (FCM) in accordance with AWS D1.5M/D1.5 , AASHTO/AWS Fracture Control Plan (FCP) for Nonredundant Members Clause. Submit welding Procedures, qualifications, and certifications showing compliance with FCP requirements.

1.3.3.2 Repair Welding

Classify repair welds as "critical repairs" or "non-critical repairs" for

SECTION 05 59 20 Page 7 all repair welding. Unless specified otherwise, follow the minimum provisions for repair procedures. Repair procedures must be qualified and approved and subject to the same QA/QC inspection requirements as other welds. Follow minimum preheat in accordance with AWS D1.5M/D1.5 AASHTO/AWS Fracture Control Plan (FCP) for Nonredundant Members Clause, for repair welding. Consider all weld repairs to fracture critical members critical welds in accordance with AWS D1.5M/D1.5 AASHTO/AWS Fracture Control Plan (FCP) for Nonredundant Members Clause and must be approved by the Engineer of Record.

1.3.4 Material Tracking

Identify how all material is tracked in the fabrication shop from receiving through complete assembly in the material tracking log template. Use material travelers toconform with the material tracking log.

During each stage of fabrication of major structural components, provide and maintain material identification to establish the heat of the material from which the component is fabricated. Provide a list showing heat numbers referenced to the material incorporated into each component. The Government will reject material that loses material identification unless the identity can be re-established to the satisfaction of the Government.

Submit material test reports or certified test reports for all material used in fabrication prior to incorporation into the structure.

1.3.5 Nonconformance Reports

The Fabricator has the responsibility to ensure all work performed complies with the Quality Control Plan and generate Nonconformance Reports (NCR) for all work deemed to not meet quality control standards. If the Government determines that fabrication is not in compliance with the QCP or that fabrication does not follow approved fabrication procedures, the Government will deem the material(s) as non-conforming. If the Government finds nonconforming work, immediately correct the procedure, conduct additional tests, and submit a written nonconformance report containing data required by the Government to ensure compliance with the Quality Control Plan. Perform additional testing as required by the Government at no additional cost to the Government. Properly document all nonconformances using a Nonconformance Report form. Submit a Nonconformance Report Form Template prior to start of fabrication. The Nonconformance Report Form Template is to be used during fabrication to record and submit all nonconformances. Submit a Nonconformance Report on the approved form documenting any deviation from the Quality Control Plan, approved shop drawings, codes, Work Plan, and/or specifications.

At a minimum, include the following in the Nonconformance Report:

1. Company name and address

2. Report title

3. Nonconformance Report number

4. Date

5. Company job number

6. Piece mark

7. Owner of structure

8. Fabricator

9. Owner's project number

10. Location

SECTION 05 59 20 Page 8

11. Detailed description of the nonconformance

12. Photo, sketch, or drawing

13. Proposed repair/disposition of the nonconformance

14. Quality Control Manager's signature and date

1.4 QUALITY ASSURANCE

Establish Witness Points for the Initial QA Inspection, Intermediate QA Inspections, and Final Inspection as follows and submit a record of all witness points. Start the Initial QA Inspection after the Government has determined there is substantial completion of components that comprise a reasonable sampling of each significant FCM and non-FCM details.

Determine the extent of completion and details and the date of the Initial QA Inspection by the Government at the Prefabrication Conference after discussion with the Contractor. At that time, produce a detailed schedule showing the progression of work and completion of components. This schedule will be updated weekly and provided by e-mail to the Contracting Officer. Give the Contracting Officer two weeks notice prior to the predetermined date for the Initial QA Inspection, including adjustments for changes in schedule. Intermediate QA Inspections will be conducted on an as needed basis and at the discretion of the Government. All QA inspections in accordance with AWS D1.5M/D1.5 . Provide unpainted components for each QA NDT and Visual Inspection. At these stages of construction, give the Contracting Officer three working days to inspect the structure. Do not begin the QA Inspection period until a minimum period of 72 hours after any welding. After the Contracting Officer has inspected the structure, make any changes required to the structure as directed by the Contracting Officer before proceeding with any additional welding. Proceed with the construction until the next witness point is reached, unless is waived in writing by the Contracting Officer. Each structure fabricated is subject to a Final Fabrication Inspection prior to painting. Conduct a Final Fabrication Inspection after the first structure is completed. Schedule and coordinate with the Contracting Officer and the Engineer of Record final fabrication inspections of additional structures. Give the Contracting Officer a minimum notice of 21 calendar days prior to the Final Fabrication Inspection.

1.4.1 Test of Materials

Requirements for tests, workmanship, and other measures for quality assurance are as specified or indicated. Perform all required material tests and analyses and be certified by an approved laboratory to demonstrate the required mechanical properties and chemical compositions of the materials are in accordance as specified. Provide continuous inspection of all operations for quality control and record the results and submit to the Contracting Officer.

1.4.2 Qualification of Welders and Welding Operators

Submit welder, welding operator and tacker qualification certification for each welder, welding operator or tack welder for approval before fabrication is commenced in accordance with paragraph Welded Connections.

An AWS Certified Welding Inspector (CWI) meeting the specified qualifications must approve all welder qualifications. Limit welders, welding operators, and tack welders to welding procedures for which they are certified. Prepare, weld, and test welds in accordance with AWS D1.5M/D1.5 . Before assigning any welder, welding operator, or tacker, submit the names and certification of each individual as qualified as specified. State the type of welding and positions for which the welder, SECTION 05 59 20 Page 9 welding operator, or tacker is qualified, the code and procedure under which the individual is qualified, the date qualified, and the name of the firm and person certifying the qualification tests on the certification.

Keep the certification current for the duration of the Contract. Submit welder and welding operator qualification test records on forms similar or equivalent to the sample forms in AWS D1.5M/D1.5 . All welders must be qualified in accordance with the Qualification Clause of AWS D1.5M/D1.5 .

Welders performing fracture critical welds must meet the additional requirements of the AASHTO/AWS Fracture Control Plan (FCP) for Nonredundant Members Clause of AWS D1.5M/D1.5 . Verify all qualifications are current prior to commencing any work. Submit a log for each welder showing employee is current in the process and procedures being proposed.

1.4.3 Inspector Qualifications

All inspectors, performing structural steel visual inspection as specified, must be qualified and certified in accordance with AWS QC1. Provide an AWS Certified Welding Inspector (CWI) as the primary point of contact for quality control of welding. Designate one individual as having primary responsibility for all quality control in accordance with AWS D1.5M/D1.5 Inspection Clause when several CWI and NDT technicians are working. Do not use non-certified inspectors and certified associate weld inspectors (CAWI) for inspection under these specifications. All personnel who perform NDT must be qualified in accordance with ANSI/ASNT CP-189 NDT Level II or III. Provide supervision by personnel possessing a Level III ASNT NDT certification for all personnel performing NDT, in accordance with AWS D1.5M/D1.5 Inspection Clause and the AASHTO/AWS Fracture Control Plan (FCP) for Nonredundant Members Clause. Submit copies of certificates showing evidence of qualifications or certifications for welding inspectors and NDT personnel.

1.4.4 Qualification of Structural Steel Fabricator

The fabricating plant(s) and fabricator(s) to be certified under the AISC (American Institute of Steel Construction) Quality Certification Program, Intermediate or Advanced Certified Bridge Fabricator with Fracture Control Endorsement or Advanced Certified Hydraulic Fabricator with Fracture Control Endorsement Hydraulic and Complex Coatings Endorsement - Enclosed/Covered/Exposed (CCE-1/2/3) previously know as Sophisticated Paint Endorsement (P1/2/3) or Society for Protective Coatings QP 3 Certification, and posses 5 years documented experience on projects of similar scope. Similar scope means projects of similar size and similar amounts of welding and detail types. Submit current certifications with proof that certifications have been held for the past 5 years. Submit AISC certificate indicating the fabrication plant(s) meets the specified structural steelwork category and documented experience. Keep the certifications current for the duration of the Contract.

1.4.5 Testing by the Government

Material component parts may be subjected to any form of nondestructive testing, as directed by the Contracting Officer. This may include any test that will thoroughly investigate the part in question. The cost of such investigation will be borne by the Government. Replace and retest all defects that are cause for rejection and rejected materials or parts at the Contractor's expense. The Government reserves the right to perform quality assurance at any point during fabrication.

SECTION 05 59 20 Page 10

1.4.6 Shop Drawings

Prepare all shop drawings in accordance with AISC 303 , AISC 326 , AISC 360 , and AISC 325 . Shop drawings are not to be reproductions of Contract drawings. Return elements of fabricated items inadvertently omitted on Contract drawings to the Contracting Officer for detailing unless they are to be detailed by the Fabricator and indicated on the shop drawings.

Cloud any and all details developed by the Fabricator on the shop drawings for separate approval by the Contracting Officer. Any items designed by the Contractor must be prepared and sealed by a Registered Professional Engineer. Splices are not included in the structure without approval of the Contracting Officer. Identify all field welds on the shop drawings.

Provide a unique identifier to permit tracking on the weld tracking log for each weld, both shop and field welds. Prior to performing any fabrication of the HSS structures listed in paragraph "SYSTEM DESCRIPTION," submit complete, detailed shop drawings for approval. Show complete details of materials, tolerances, connections, and proposed welding sequences on the shop drawings. Include catalog cuts, templates, fabrication and assembly details, and type, grade, and class of materials, as appropriate in the shop drawings. Identify all FCM, including attachments meeting the FCM definition, on the shop drawings as well as all temporary and tack welds. Identify each member following the numbering scheme shown on the shop drawings. Provide a table containing a list of all members and a reference to each material certificate and test report that applies to that member. Identify weld procedures and NDE required for each weld on shop drawings. Cloud and identify any and all splices (shop and field) on the shop drawings for approval. All splices must be tension complete joint penetration butt welds.

1.4.7 Fabrication Log Template

Submit for approval prior to commencing fabrication. Member identification must follow the numbering scheme shown on the shop drawings. As a minimum, the log must include:

a. General Information

1. Contractor Quality Control (CQC) Plan

2. Fracture Control Plan

3. Welding Procedure Specifications with Welder Certifications

4. Welding Inspector Qualifications and Certifications

5. Conditional Repair Plans

6. Fracture Critical Member Repair Plans

7. Nonconformance Reports

8. Material Tracking Log - template to be approved prior to fabrication.

9. Material Orders and Certifications - Mill test reports (MTR) to be organized as to identify all MTRs for steel materials used from the fabricator's stock or from warehouse purchases. Maintain purchase orders and certifications for all other materials. MTRs, purchase orders, certifications, and shipping bills that correspond to the identification system established by the Contractor for tracking materials.

10. As-Fabricated Drawings with Control Dimensions - Electronic CADD drawings in accordance with Section 01 78 00 CLOSEOUT SUBMITTALS.

b. Weld Tracking Log

1. Member to be welded.

SECTION 05 59 20 Page 11

2. Member type (FCM or not).

3. Welding position, type of weld.

4. Applicable WPS reference.

5. AWS joint preparation.

6. Designation - name or stamping designation of welder.

7. Welding operator or tacker.

8. Weld Tests and Inspection Reports. Weld identification on the shop drawings must match weld tracking log identification.

9. An approved Weld Tracking Log Template is required prior to commencing fabrication.

c. Bolt Tracking Log

1. Records from the Bolt Work Plan, including results from Rotational Capacity and Pre-Installation Verification tests.

2. Records for tracking pretensioned and retensioned bolts on the entire structure to verify all bolts were properly tensioned.

Bolted connection identification on the shop drawings will match bolted connection log identification.

3. An approved Bolt Tracking Log template is required prior to commencing fabrication.

d. Painting QC Log

1. Materials Certifications

2. Painter Qualifications/Certificates

3. Quality Control Plan, including Inspections

The log must individually identify and track every primary member, weld, and bolted connection. Primary members must be identifiable and traceable from the mill through fabrication. At the Prefabrication Conference, the Contracting Officer and the Contractor will discuss which members are considered primary members for tracking purposes. Submit the resulting Primary Member List. Material orders and certifications must be cross-referenced with the corresponding shop drawing piece identification(s) and provided in a table. Material orders and certifications that apply to multiple structures must be duplicated and included in each structure fabrication log.

1.4.8 Fabrication Log

Submit the fabrication log in accordance with Section 01 78 00 CLOSEOUT SUBMITTALS. Continuously update and have available for Government review. Submit fabrication log immediately upon completion.

1.5 DELIVERY, STORAGE, AND HANDLING

Deliver, handle, and store materials and fabricated items as specified.

Notify the Contracting Officer 28 calendar days in advance of delivery of the assemblages. Shipping assemblages are at the Contractor's expense. If alternate (non-barge) shipping methods are used, do so at no additional cost to the Government. Any items not shipped with the assemblages to arrive prior to the barge(s) being turned over to the Government.

Coordinate all deliveries with the Contracting Officer Arrange the assemblages on the barge(s) to avoid damage occurring during shipping.

Direct all sling lifting lugs up. Submit a Delivery/Shipping Plan showing orientation and locations of assemblages on the barge(s) prior to shipment for approval. Submit drawings providing descriptions of methods of delivering the completed structural units, including details for support

SECTION 05 59 20 Page 12 during shipment to prevent distortion or other damages, and orientation and location of the structure on barge(s). Protect structural steel members and packaged materials from corrosion and deterioration. Store material in a dry area. Support materials stored outdoors above ground surfaces on wood runners and protect with acceptable effective and durable covers.

1.6 SYMBOLS AND SAFETY

Welding symbols on shop drawings are in accordance with AWS A2.4 using AWS A3.0M/A3.0 , unless otherwise indicated. Safe welding practices and safety precautions during welding to be in accordance with AWS Z49.1

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 Structural Steel

2.1.1.1 Non-Fracture Critical Structural Steel

Provide all structural steel not identified as fracture critical members (FCM) in accordance with ASTM A709/A709M , Grade 50T Zone 2 for the skin plate and ASTM A709.A709M Zone 2 for all other Non-fracure critical members, meeting tension toughness requirements, unless indicated otherwise or specified. Use of weathering steels in submerged conditions are prohibited.

Provide structural steel plate greater than 4 inches in thickness in accordance with ASTM A572/A572M , Grade 42 with supplementary requirement S5 meeting the non-fracture critical tension toughness in accordance with ASTM A709/A709M , Grade 50T Zone 2.

2.1.1.2 Fracture Critical Structural Steel

Provide all structural steel as indicated as fracture critical members (FCM) in accordance with ASTM A709/A709M , Grade 50F Zone 2 meeting tension toughness requirements, unless indicated otherwise or specified. Use of weathering steels are prohibited.

2.1.1.3 Structural Steel Plate

Provide 3/4-inch thick structural steel plates and indicated as "FCM" or structural steel plate attached via a welded connection to a FCM will be subjected to straight-beam ultrasonic examination in accordance with Level C of ASTM A578/A578M and Supplementary Requirement S1. Provide the scanning to be continuous over 100 percent of the plate surface along parallel paths, transverse or parallel to the major plate axis, with not less than 10 percent overlap between each path. A copy of the report, containing all the required data specified in accordance with ASTM A578/A578M , submit for all the material examined. Provide all FCM structural steel plate with thermal cut edges.

2.1.2 Bolts, Nuts and Washers

Unless specified otherwise or indicated, provide high-strength bolts in accordance with ASTM F3125/F3125M , Grade A325 heavy hex bolt, Type I, mechanically galvanized finish and heavy hex bolt, Type I, mechanically

SECTION 05 59 20 Page 13 galvanized finish as specified. Nuts and washers for high-strength bolts in accordance with ASTM A563, Grade DH heavy hex nut and ASTM F436/F436M , Type 1 hardened washer. Mild structural steel bolts, nuts, and bolting materials in accordance with ASTM A307, Grade A, unless specified or indicated otherwise.

2.2 FABRICATION

2.2.1 Welding Equipment and Materials

Furnish all welding equipment, electrodes, welding wire, and fluxes capable of producing acceptable welds when used by a qualified welder or welding operator performing qualified welding procedures. Furnish welding equipment and materials in accordance with AWS D1.5M/D1.5 .

2.2.2 Structural Fabrication

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. Material with welds will not be accepted except where welding is definitely specified, indicated or otherwise approved. Use approved dies, press brakes or bending rolls to make bends. Take precautions to avoid overheating the metal where heating is required and allow it to cool in a manner that will not impair the original properties of the metal. Obtain approval prior to flame cutting material, other than structural steel, indicated on detail drawings.

Accurately shear material and neatly finish all portions of the work.

Provide square and true corners unless otherwise shown. Fillet re-entrant cuts to a minimum radius of 1 inch in accordance with AWS D1.5M/D1.5 Workmanship Clause unless otherwise indicated or approved. Provide finished members free of twists, bends and open joints.

2.2.2.1 Dimensional Tolerances for Structural Work

a. Measure dimensions by an approved measuring system. Submit the measuring system for approval with the work plan (i.e. calibrated steel tape of approximately the same temperature as the material being measured). The overall dimensions of an assembled structural unit must be within the tolerances indicated or as specified. Where tolerances are not specified or indicated, a variation of 1/32 inch is permissible in the overall length of component members with both ends milled and component members without milled ends are not to deviate from the dimensions indicated by not more than 1/16 inch for members 30 feet or less in length and by not more than 1/8 inch for members over 30 feet in length.

Machine may be required to achieve the specified tolerances.

Submit a detailed Fabrication and Field Dimension Control Plan for each hydraulic steel structure, prior to start of fabrication, which includes procedures, methods, and sequencing to control, measure, and verify the dimensional tolerances specified and indicated. This Plan is to address shop fabrication and shop assembly.

b. Structure dimensions indicated are based on a structure temperature of 60 degrees F. Perform dimensional adjustments to compensate for actual temperature variations during construction.

SECTION 05 59 20 Page 14

2.2.2.2 Structural Steel Fabrication

Structural steel may be thermally cut provided an accurate profile with a smooth and regular surface, free from cracks and notches is obtained. All thermally cut surfaces must be produced using a mechanically guided torch unless otherwise approved by the Contracting Officer or an authorized representative. Thermal cut surfaces produced by a manually guided torch, when allowed, smoothed by machining or grinding to sound material. Prepare surfaces and edges in accordance with AWS D1.5M/D1.5 .

2.2.2.3 Thermal Cutting of Structural Steels with 50,000 psi Minimum Yield Strength or Higher

Provide flame cut edges of material not hardened by the cutting process.

Achieved by preheating, post heating or control of the burning (cutting) process. Flame cut edges found to have a Rockwell Hardness Value of C 30 or greater will be considered unacceptable. Furnish a portable Rockwell Hardness Tester to determine conformance. Unacceptably hard surfaces will be removed by grinding, machining, or approved heat treating procedures.

2.2.2.4 Sheared Edges

Remove sheared edges of plates thicker than 3/4-inch to a depth of 1/4-inch beyond the original sheared edge or beyond any reentrant cut produced by shearing. Accomplished by thermal cutting or edge planning.

2.2.2.5 Control of Distortion and Shrinkage

Prepare a welding sequence in accordance with AWS D1.5M/D1.5 for a member or structure which in conjunction with the joint welding procedures and overall fabrication methods will produce members or structure meeting the quality requirements specified. Submit the welding sequence and distortion control program for approval before start of welding on a member or structure in which shrinkage or distortion is likely to affect the adequacy of the member or structure. Approval of any Distortion and Shrinkage Control Plan will not relieve the Contractor of producing a finished structure meeting all requirements as specified.

2.2.3 Assembly

Submit Assembly Drawings and detailed descriptions indicating the sequence of fabrication and assembly of all structures, components, and subassemblies. Provide details for connecting the adjoining fabricated components in the shop and on-site. Provide drawings and detailed descriptions of the assembly of components into the final structure.

Identify assembly details in the required order of assembly and details of witness points as specified.

Ensure the Assembly and Fabrication Sequencing Plan includes details describing fit-up, welding and bolting sequences of individual components and the completed assembly, and the required hold points necessary for weld inspection. The Assembly and Fabrication Sequencing Plan will be evaluated to ensure that the Fabricator is sequencing the work to control distortion, shrinkage, residual stresses and to meet required tolerances.

2.2.4 Materials Disposition Record

Submit all purchase and mill orders, shop orders for materials and work orders, including all orders placed by Contractors and old orders extended

SECTION 05 59 20 Page 15 for each supplier. Furnish, at the time of submittal of shop drawings, a list designating the material to be used for each item. Where mill tests are required, purchase orders must contain the test site address and the name of the testing agency. Furnish a shipping bill or memorandum of each shipment of finished pieces or members to the project site, giving the designation mark and weight of each piece, the number of pieces, the total weight, and if shipped by rail in carload lots, the car initial and number. Submit material records before the beginning of fabrication.

Additional requirements for this submittal are listed below.

2.2.5 Welded Connections

2.2.5.1 Welding Procedure

a. Perform welding in accordance with AWS D1.5M/D1.5 . Prior to the start of production welding, submit a complete schedule of welding procedures for a typical structure in accordance with AWS D1.5M/D1.5 .

Provide detailed procedure specifications and tables or diagrams showing the procedures to be used for each required joint in the schedule.

b. Submit a Welding Procedure Specification (WPS) for each weld to be made. Submit Welding Procedure Specifications and Procedure Qualification Records (PQR) for approval before fabrication is commenced. Submit for approval copies of the Welding Procedure Specification and the results of the procedure qualification test for each type of welding which requires procedure qualification. Submit the WPS and PQR with the shop drawings. Prepare and qualify each WPS in accordance with AWS D1.5M/D1.5 . Show types and locations of welds designated or specified to receive nondestructive examination and identify the weld as FCM when applicable in the welding procedure. A WPS is always required, even if the procedure is considered prequalified in accordance with AWS D1.5M/D1.5 . Clearly identify each procedure as being either prequalified or qualified by tests. If a PQR is developed, a representative of the Government must witness the test plate welding and the specimen testing. Approval of any procedure, however, will not relieve the Contractor of the responsibility for producing a finished structure as specified. Make copies of the WPS available for reference to the welders, welding operators and tack welders. An AWS CWI meeting the specified qualifications or welding engineer must approve all WPS's and PQR's.

2.2.5.2 Welding Process

Perform welding of structural steel in accordance with AWS D1.5M/D1.5 by an electric arc welding process using a method which excludes the atmosphere from the molten metal for all welds. Minimize residual stresses, distortion and shrinkage during welding.

2.2.5.3 Welding Technique

2.2.5.3.1 Filler Metal

Provide electrode, electrode-flux combination and grade of weld metal as the appropriate AWS specification for the base metal and welding process being used or as specified where a specific choice of AWS specification allowable is required. Follow the requirements of AWS D1.5M/D1.5 for matching filler metal. Include the AWS designation of the electrodes to be used in the schedule of welding procedures. Use only low hydrogen

SECTION 05 59 20 Page 16 electrodes for manual shielded metal-arc welding regardless of the thickness of the steel. Maintain low moisture of low hydrogen electrodes using a controlled temperature storage oven at the job site in accordance with AWS D1.5M/D1.5 , AASHTO/AWS Fracture Control Plan (FCP) for Nonredundant Members Clause. Power controlled temperature storage ovens at all times.