W911WN-16-B-0002-0001.pdf

W81ET460835438

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

This solicitation is amended to add a CLIN 0006 for Furnishing and Delivery of a Spare Drive Sprocket, and to provide revised specif ications for Sections 01 22 22.10 and 35 20 16.53. See document W911WN-16-B-0002-0001 (PDF).

1. CONTRACT ID CODE PAGE OF PAGES

J 1 23

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

16C. DATE SIGNED

BY 16-Jun-2016

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 W911WN-16-B-0002

X 9B. DATED (SEE ITEM 11)

31-May-2016

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

16-Jun-2016

CODE

U.S. ARMY ENGINEER DISTRICT, PITTSBURGH

ATTN CELRP-RC-P

W S MOORHEAD FEDERAL BUILDING

1000 LIBERTY AVENUE ROOM 2203

PITTSBURGH PA 15222-4186

W911WN 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W911WN-16-B-0002

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION B - SUPPLIES OR SERVICES AND PRICES

CLIN 0006 is added as follows:

ITEM NO SUPPLIES/SERVICES QUANTITY UNIT UNIT PRICE AMOUNT

0006 1 Each Furnish and Deliver Spare Drive Sprocket

FFP

FOB: Destination

NET AMT

The following have been modified:

TOTALS

PLEASE COMPLETE THE INFORMATION BELOW, IN ADDITION TO THE PRICE SCHEDULE

INCLUDED AS ATTACHMENT 2.

Base (Line Items 0001 – 0006) $________________________________________ Option A (Line Items 1001 – 1002) $________________________________________ Option B (Line Items 2001 – 2002) $________________________________________

TOTAL (Line Items 0001 – 2002) $________________________________________

Do not round off totals, in case of a variation between the unit price and the extension, the unit price will be considered to be the bid. If a modification to a bid based on unit prices is submitted, which provides for a lump sum adjustment to the total estimated cost, the application of the lump sum adjustment to each unit price in the bid schedule must be stated. If it is not stated, the bidder agrees that the lump sum adjustment shall be applied on a prorata basis to every unit price in the bid schedule.

SECTION E - INSPECTION AND ACCEPTANCE

The following Acceptance/Inspection Schedule was added for CLIN 0006:

INSPECT AT INSPECT BY ACCEPT AT ACCEPT BY

N/A N/A N/A Government

SECTION F - DELIVERIES OR PERFORMANCE

52.211-8 TIME OF DELIVERY (JUN 1997)

(a) The Government requires delivery to be made according to the following schedule:

Two (2) vertical lift gates, two (2) sets of chains, two (2) sets of support beams delivered according to the following schedule:

One (1) vertical lift gate, one (1) set of chains, one (1) set of support beams and spare drive sprocket delivered within 480 calendar days from Notice to Proceed. (Line Items 0003AA, 0004AA, 0005AA, 0006)

One (1) vertical lift gate, one (1) set of chains, one (1) set of support beams delivered within 845 calendar days from Notice to Proceed. Line Items 0003AB, 0004AB, 0005AB)

Awardable Options: Only the basic contract line items, 0001 through 0006, will be awarded initially. Awardable Option Items 1001 through 2002 may be exercised as needed. Awardable Options, if exercised, may not be exercised sequentially. Awardable Option B may be exercised without exercising Awardable Option A. If exercised, Awardable Option A will be exercised no later than October 1, 2017. If exercised, Awardable Option B will be exercised no later than October 1, 2018. The Not-To-Exceed amount for line items 1001 and 2001 should reflect bond costs for all awardable option items within their respective awardable option. The contract completion time will remain unchanged regardless of the timing of option awards.

Note: Both gates, sets of chains, sets of support beams and spare drive sprocket shall be fabricated/completed within 845 calendar days from Notice to Proceed.

The Government will evaluate equally, as regards time of delivery, offers that propose delivery of each quantity within the applicable delivery period specified above. Offers that propose delivery that will not clearly fall within the applicable required delivery period specified above, will be considered nonresponsive and rejected. The Government reserves the right to award under either the required delivery schedule or the proposed delivery schedule, when an offeror offers an earlier delivery schedule than required above. If the offeror proposes no other delivery schedule, the required delivery schedule above will apply.

OFFEROR'S PROPOSED DELIVERY SCHEDULE

Within Days

After Date

Item No. Quantity of Contract

(b) Attention is directed to the Contract Award provision of the solicitation that provides that a written award or acceptance of offer mailed, or otherwise furnished to the successful offeror, results in a binding contract. The Government will mail or otherwise furnish to the offeror an award or notice of award not later than the day award is dated. Therefore, the offeror should compute the time available for performance beginning with the actual date of award, rather than the date the written notice of award is received from the Contracting Officer through the ordinary mails. However, the Government will evaluate an offer that proposes delivery based on the Contractor's date of receipt of the contract or notice of award by adding (1) five calendar days for delivery of the award through the ordinary mails, or (2) one working day if the solicitation states that the contract or notice of award will be transmitted electronically. (The term "working day" excludes weekends and U.S. Federal holidays.) If, as so computed, the offered delivery date is later than the required delivery date, the offer will be considered nonresponsive and rejected.

(End of clause)

SECTION I - CONTRACT CLAUSES

52.211-10 COMMENCEMENT, PROSECUTION, AND COMPLETION OF WORK (APR 1984)

The Contractor shall be required to (a) commence work under this contract within 10 calendar days after receipt of Notice to Proceed, (b) prosecute the work diligently, and (c) complete the entire work ready for use not later than 845 calendar days from Notice to Proceed.

(End of clause)

(End of Summary of Changes)

Montgomery Locks and Dam, Fabrication of Vertical Lift Gates 2016

SECTION TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

SECTION 01 22 22.10

MEASUREMENT AND PAYMENT

PART 1 GENERAL

1.1 JOB PAYMENT ITEMS

1.1.1 Reimbursement For Actual Performance And Payment Bond Premiums

1.2 UNIT PRICE PAYMENT ITEMS

1.2.1 Digital Progress Images

1.2.1.1 Payment

1.2.1.2 Measurement

1.2.1.3 Unit of Measure

1.2.1.4 Payment Item

1.2.2 Lift Gate and Associated Items

1.2.2.1 Payment

1.2.2.2 Measurement

1.2.2.3 Unit of Measure

1.2.2.4 Payment Items

1.2.3 Machinery Supports Modifications

1.2.3.1 Payment

1.2.3.2 Measurement

1.2.3.3 Unit of Measure

1.2.3.4 Payment Item

1.2.4 Lifting Chains

1.2.4.1 Payment

1.2.4.2 Measurement

1.2.4.3 Unit of Measure

1.2.4.4 Payment Item

1.2.5 Storage of Vertical Lift Gates and Associated Items

1.2.5.1 Payment

1.2.5.2 Measurement

1.2.5.3 Unit of Measure

1.2.5.4 Payment Item

1.2.6 1.1.2 Spare Drive Sprocket

1.2.6.1 1.1.2.1 Payment

1.2.6.2 1.1.2.2 Measurement

1.2.6.3 1.1.2.3 Unit of Measure

1.2.6.4 1.2.1.1 Payment Items

PART 2 PRODUCTS (Not Applicable)

PART 3 EXECUTION (Not Applicable)

-- End of Section Table of Contents --

SECTION 01 22 22.10 Page 1 Certified Final - RTA W911WN-16-B-0002 Rev. by Am. 0001

SECTION 01 22 22.10

MEASUREMENT AND PAYMENT

PART 1 GENERAL

1.1 JOB PAYMENT ITEMS

Payment items for the work of this contract for which contract job payments will be made are listed in the PRICE SCHEDULE and described below. All costs for items of work, which are not specifically mentioned to be included in a particular job item, shall be included in the listed job item most closely associated with the work involved. The job price and payment made for each item listed shall constitute full compensation for furnishing all plant, labor, materials, and equipment, and performing any associated Contractor quality control, environmental protection, meeting safety requirements, tests and reports, and for performing all work required for which separate payment is not otherwise provided.

1.1.1 Reimbursement For Actual Performance And Payment Bond Premiums

Payment for reimbursement for actual performance and payment bond premiums will be made as specified in Section H SPECIAL CONTRACT REQUIREMENTS, clause PAYMENT FOR PERFORMANCE AND PAYMENT BONDS.

0001 REIMBURSEMENT FOR ACTUAL PERFORMANCE AND PAYMENT BOND PREMIUMS,

BASE CONTRACT

1001 REIMBURSEMENT FOR ACTUAL PERFORMANCE AND PAYMENT BOND PREMIUMS,

AWARDABLE OPTION

2001 REIMBURSEMENT FOR ACTUAL PERFORMANCE AND PAYMENT BOND PREMIUMS,

AWARDABLE OPTION

1.2 UNIT PRICE PAYMENT ITEMS

Payment items for the work of this contract on which the contract progress payments will be based are listed in the PRICE SCHEDULE and described below. The unit price and payment made for each item listed shall constitute full compensation for furnishing all plant, labor, materials, and equipment, and performing any associated Contractor quality control, environmental protection, meeting safety requirements, tests and reports, and for performing all work required for each of the unit price items.

1.2.1 Digital Progress Images

1.2.1.1 Payment

Payment shall constitute full compensation for all labor, equipment, material and supply costs for furnishing monthly digital progress images as specified in Section 01 32 33 DIGITAL PROGRESS IMAGES.

1.2.1.2 Measurement

Measurement will be made of the number of months that sets of photographs are taken and delivered to the Contracting Officer as approved or directed

SECTION 01 22 22.10 Page 2 by the Contracting Officer or his authorized representative. Each set shall consist of all specified hardcopies and electronic copies for each photographic session as specified in Section 01 32 33 DIGITAL PROGRESS

IMAGES.

1.2.1.3 Unit of Measure

Unit of Measure: Sets

1.2.1.4 Payment Item

0002 DIGITAL PROGRESS IMAGES

1.2.2 Lift Gate and Associated Items

1.2.2.1 Payment

Payment shall constitute full compensation for all labor, equipment, material and supply costs to fabricate and deliver the new vertical lift gate including, all metalwork fabrication, and shop assembly.

Payment shall include required shop assembly of the gate segments, all costs required for testing of materials and products incorporated into the work; required shop tests; and shipment to the site. Payment shall include all necessary materials for counterweights to balance the gate and counterweights furnished for balancing and leveling the gate components for handling and delivery.

Payment will include all appurtenant items including, but not limited to, gate leaf and frame; guides; wheel assemblies; sprockets, walkways and steel grating; ladders; handrail; fasteners; and other appurtenances as called for in these specifications.

Payment will include shop applied coating systems including thermal spray metallizing and painting. Payment shall include all advanced planning and engineering; detailing and preparation of required plans and computations;

and all other incidental costs to furnish the lift gates, as shown on the contract drawings and specified.

1.2.2.2 Measurement

Measurement will be made of the number of lift gates satisfactorily fabricated.

1.2.2.3 Unit of Measure

Unit of measure: Each

1.2.2.4 Payment Items

0003AA FABRICATE AND DELIVER VERTICAL LIFT GATE NUMBER 1

0003AB FABRICATE AND DELIVER VERTICAL LIFT GATE NUMBER 2

1.2.3 Machinery Supports Modifications

1.2.3.1 Payment

Payment shall constitute full compensation for all labor, equipment, material and supply costs to fabricate and deliver the the support structure for modifications to the gate operating machinery supports, SECTION 01 22 22.10 Page 3 including, all metalwork fabrication and shop assembly. Payment shall include required shop assembly, include all costs required for testing of materials and products incorporated into the work, and shipment to the site.

Payment will include applied coating systems. Payment shall include all advanced planning and engineering; detailing and preparation of required plans and computations; and all other incidental costs to furnish the items, as shown on the contract drawings and specified.

1.2.3.2 Measurement

Measurement will be made of the number of sets of machinery support modification items satisfactorily fabricated.. One set will consist of all items required for both ends of one gate bay.

1.2.3.3 Unit of Measure

Unit of measure: Sets

1.2.3.4 Payment Item

0004AA FABRICATE AND DELIVER MACHINERY SUPPORT MODIFICATIONS,

VERTICAL LIFT GATE NUMBER 1

0004AB FABRICATE AND DELIVER MACHINERY SUPPORT MODIFICATIONS,

VERTICAL LIFT GATE NUMBER 2

1.2.4 Lifting Chains

1.2.4.1 Payment

Payment for this item shall constitute full compensation for all labor, equipment, material and supply costs to fabricate and deliver lifting chains for the gates, including all metalwork fabrication and shop assembly. Payment shall include required shop assembly, include all costs required for testing of materials and products incorporated into the work and required shop tests.

Payment will include applied lubrication. Payment shall include all advanced planning and engineering; detailing and preparation of required plans and computations; and all other incidental costs to furnish the lift chains, as shown on the contract drawings and specified.

1.2.4.2 Measurement

Measurement will be made of the number of sets of lifting chains satisfactorily fabricated. One set consists of two lifting chains for each end of one gate.

1.2.4.3 Unit of Measure

Unit of measure: Sets

1.2.4.4 Payment Item

0005AA FABRICATE AND DELIVER LIFTING CHAINS FOR GATES, VERTICAL LIFT

GATE NUMBER 1

0005AB FABRICATE AND DELIVER LIFTING CHAINS FOR GATES, VERTICAL LIFT

GATE NUMBER 2

SECTION 01 22 22.10 Page 4

1.2.5 Storage of Vertical Lift Gates and Associated Items

1.2.5.1 Payment

Payment for this item shall constitute full compensation for all labor, equipment, material and supply costs to store the vertical lift gate, machinery modifications and lift chains until they are offloaded as specified in Section 35 05 70.00 08 DELIVERY AND STORAGE OF DAM LIFT GATES AND ASSOCIATED ITEMS. The payment shall constitute full compensation for all incidental costs in connection with these aspects of the work under this contract.

1.2.5.2 Measurement

Measurement shall be made on the number of months each gate and associated items are stored until delivery. Measurement shall be made to the whole month.

1.2.5.3 Unit of Measure

Unit of measure: Months

1.2.5.4 Payment Item

1002 STORAGE OF VERTICAL LIFT GATE, MACHINERY MODIFICATIONS, AND LIFT

CHAINS, VERTICAL LIFT GATE NUMBER 1

2002 STORAGE OF VERTICAL LIFT GATE, MACHINERY MODIFICATIONS, AND LIFT

CHAINS, VERTICAL LIFT GATE NUMBER 2

1.2.6 1.1.2 Spare Drive Sprocket

1.2.6.1 1.1.2.1 Payment

Payment for this item shall constitute full compensation for all labor, equipment, material and supply costs to furnish and deliver the spare drive sprocket for the gates, including all metalwork fabrication, shop assembly, and delivery. Payment shall include all costs required for testing of materials and products incorporated into the work and shipment to the site.

Payment shall include all advanced planning and engineering; detailing and preparation of required plans and computations; and all other incidental costs to furnish and deliver the spare drive sprocket, as shown on the contract drawings and specified.

1.2.6.2 1.1.2.2 Measurement

Measurement will be made of the number of spare drive sprockets satisfactorily fabricated and delivered.

1.2.6.3 1.1.2.3 Unit of Measure

Unit of measure: Each.

1.2.6.4 1.2.1.1 Payment Items

0006 Furnish and Deliver Spare Drive Sprocket for Gates

SECTION 01 22 22.10 Page 5

PART 2 PRODUCTS (Not Applicable)

PART 3 EXECUTION (Not Applicable)

-- End of Section --

SECTION 01 22 22.10 Page 6

SECTION TABLE OF CONTENTS

DIVISION 35 - WATERWAY AND MARINE CONSTRUCTION

SECTION 35 20 16.53

VERTICAL LIFT GATES

PART 1 GENERAL

1.1 REFERENCES

1.2 SUBMITTALS

1.3 QUALIFICATION OF WELDERS AND WELDING OPERATORS

1.4 SPECIAL REQUIREMENTS

1.4.1 Lift Gate Weight Control

1.4.2 Balance and Counter-Weighting

1.4.2.1 Balance and Counterweighting for Gate Transportation and

Storage

1.5 DELIVERY, STORAGE, AND HANDLING

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 Rubber Seals

2.1.1.1 Physical Characteristics

2.1.1.2 Fabrication of Rubber Seals

2.1.1.3 Fluorocarbon (Teflon) Coating for Seals

2.2 MANUFACTURED UNITS

2.3 FABRICATION

2.3.1 Detail Drawings

2.3.1.1 Fabrication Drawings

2.3.1.2 Shop Assembly Drawings

2.3.2 Structural Fabrication

2.3.2.1 Welding

2.3.2.2 Bolted Connections

2.3.2.3 Machine Work

2.3.2.4 Miscellaneous Provisions

2.3.3 Lift Gates

2.3.3.1 General

2.3.3.2 Gate Lifting Brackets and Sprockets

2.3.3.3 Wheels and Guide Rollers

2.3.3.4 Gate Frame and Guides

2.3.3.5 Appurtenant Items

2.3.4 Appurtenant Items

2.3.5 Shop Assembly

2.3.5.1 Sprockets

2.3.5.2 End Assemblies

2.3.5.3 Lubrication System

2.3.5.4 Seals

2.4 TESTS, INSPECTIONS, AND VERIFICATIONS

2.4.1 Testing of Rubber Seals

2.4.2 Inspection

PART 3 EXECUTION

SECTION 35 20 16.53 Page 1

3.1 PAINTING

3.2 PROTECTION OF FINISHED WORK

-- End of Section Table of Contents --

SECTION 35 20 16.53 Page 2

SECTION 35 20 16.53

VERTICAL LIFT GATES

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 WELDING SOCIETY (AWS)

AWS D1.5M/D1.5 (2010) Bridge Welding Code

ASTM INTERNATIONAL (ASTM)

ASTM D2240 (2005; R 2010) Standard Test Method for Rubber Property - Durometer Hardness

ASTM D395 (2014) Standard Test Methods for Rubber Property - Compression Set

ASTM D412 (2006a; R 2013) Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers - Tension

ASTM D413 (1998; R 2013) Rubber Property - Adhesion to Flexible Substrate

ASTM D471 (2012a) Standard Test Method for Rubber Property - Effect of Liquids

ASTM D572 (2004; R 2010) Rubber Deterioration by Heat and Oxygen

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. The following shall be submitted in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Detail Drawings; G, DO

Detail drawings for lift gate and lift gate lubrication system, as specified.

SD-03 Product Data

Materials

SECTION 35 20 16.53 Page 3

System of identification which shows the disposition of specific lots of approved materials and fabricated items in the work before completion of the contract.

Welding; G, DO

Schedules of welding procedures for structural steel.

Materials

Material orders, material lists, and material shipping bills.

SD-06 Test Reports

Tests, Inspections, and Verifications G, DO

Certified material test reports with all material delivered to the site.

1.3 QUALIFICATION OF WELDERS AND WELDING OPERATORS

Qualification of welders and welding operators shall conform to the requirements of Section 05 59 13 FABRICATION OF HYDRAULIC STEEL STRUCTURES.

1.4 SPECIAL REQUIREMENTS

1.4.1 Lift Gate Weight Control

It is essential that the Contractor monitor the weight and center of gravity (CG) of the gate during all stages of fabrication and assembly until the gate is fully assembled and operational. The weight control and center of gravity is critical to assure that the dead weight of the gate does not exceed the capacity of the lifting chain and equipment, and the load is properly aligned with the lifting points.

The current estimated theoretical weight of the lift gate as designed and shown on the contract drawings, including the weight of metallizing, coatings and welds, is approximately 250,000 pounds. This estimated weight is based on the following;

Structural Steel Weight 490 lbs/cubic foot, or as publish by AISC

Cast Steel 450 lbs/cubic foot

Metallizing 0.5 pounds/square foot

Coatings 0.2 pounds/square foot

Welds:

Penetration/Groove Equivalent to Member - no added Weight 1/4 inch fillet 0.106 lbs/foot 5/16 inch fill 0.166 lbs/foot

The actual weight of the lift gates shall be based on the approved bill of materials and shop drawings for the lift gate. Factors shall be applied to account for the weight of metallizing, coatings, and welds. The

SECTION 35 20 16.53 Page 4 maximum permissible final weight of the gate including counterweights, coatings, metallizing and welds shall not exceed 260,000 pounds.

The Contractor shall monitor and control the incorporation of materials into the final product to assure that the final dead weight and corresponding center of gravity for the gate meet the design requirements.

The Contractor shall calculate the initial theoretical dead weight and CG of the gate from design drawings and submit this information to the Government within 15 days of the Notice to Proceed. This information shall include all material takeoffs and calculations of the gates center of gravity as theoretically shown in the design drawings. The Contractor shall provide any spread sheet programs or commercial software that is used to calculate the initial dead weight and center of gravity. The Government shall review this information and respond to the Contractor within five working days of receiving this submission.

Once this initial dead-weight and center of gravity of the gate has been established, all subsequent calculations shall be based on actual material weights provided by approved bill of materials and the approved shop drawings. The Contractor shall utilize the identical program(s) and/or commercial software that was utilized for the development of the initial theoretical dead-weight and center of gravity calculations.

As fabrication progresses, actual weights of members, plates and other components shall be used to update the initial calculations, thus giving a current status of the actual weight and center of gravity of the gate.

Updates of the weight and center of gravity shall be conducted on a monthly basis during the period of fabrication. If at any time the weight (or center of gravity) of the gate appears to exceed that anticipated, the Contractor shall immediately notify Contracting Officer and await notice from the Government regarding a course of correction actions. The Contracting Officer shall have access to weight/center of gravity calculations as needed, and the Contractor shall submit weight/center of gravity calculations as described:

a. The initial theoretical completed assembly (including estimated grating and handrails)

b. Before beginning metallizing/coating

c. The final, fully balanced gate, fully outfitted with all coatings, gratings, handrails, etc.

All material incorporated into the work shall be monitored and recorded.

Member sizes shall be as shown, and shall not be substituted with other member sizes unless specifically approved in writing by the Contracting Officer.

In order to identify the actual weight of the metallizing and coating systems, the Contractor shall develop one foot square test plates with the required average thickness of metallizing and paint systems applied. The plates shall be accurately weighed before and after the metallizing/ coatings are applied and again thereafter to determine the actual unit weight (per square foot) of the systems. The results of this demonstration shall be furnished to the Contracting Officer for approval.

The approved actual units weights shall then be used to update the actual weight and center of gravity calculations for the gate as fabrication progresses.

As the fabrication nears to point where metallizing and costing are to be

SECTION 35 20 16.53 Page 5 applied, the Contractor shall make a final calculation of the anticipated amount of counterweights that will be required in order to plan the location of this counterweight. This calculation shall be made once all actual material weights and metallizing and coating unit weights have been incorporated into the calculations.

1.4.2 Balance and Counter-Weighting

The Contractor shall calculate the design center of gravity of the gate prior to fabrication and notify the Contracting Officer of the amount of counter-weighting that may be anticipated to attain the center of gravity as designed.

Based on the current estimated weight of the lift gate as designed and shown on the contract drawings, it is anticipated that approximately 6,000 to 7,000 pounds of counterweight will be necessary along the downstream vertical of the gate.

All counterweights shall be made with steel plates that are permanently affixed to the gate with bolts and the nuts tack welded after tightening.

The counterweights shall be distributed along the downstream vertical struts in such a manner as to maintain the levelness of the gate.

Counterweights shall be metallized and painted with the coating system specified for the gates.

Once completely assembled, the gate including all end assemblies, main gate leaf assembly, all walkways, handrailing and miscellaneous metals, sprockets, wheels and guides, but not grease lines, shall be hung from the lifting points and inspected for level and plumb. All components shall also be fully coated and metallized at this time. Survey instruments shall then be used to measure the levelness across the horizontal plane of the gate and the plumbness along the vertical plane. The method of surveying the gate shall be submitted to the Contracting Officer for approval.

The Contractor shall be notified not less than 30 days prior to the date balancing and testing will be performed.

Plumbness and levelness shall be checked along the entire length of the gate. The gate plumbness shall not exceed 1/8 inch when compared to a vertical plane. Levelness shall not exceed 1/16 inch when compared to a horizontal plane.

1.4.2.1 Balance and Counterweighting for Gate Transportation and Storage

The gate shall be balanced in the shop as described in paragraph "Balance and Counterweighting," with the gate and end assemblies fully assembled and hung from the lifting points. The gate end assemblies will be installed separate from the main gate leaf and the main gate leaf will be lifted from different lifting points. This will alter the balance of the main gate leaf that was produced during the shop balancing test. The main gate leaf may need to be provided with temporary counterweights in order to hang in a level position during handling and installation. The Contractor shall be responsible to calculate the amount and location of any necessary temporary counterweight, furnish and install this temporary counterweight. The temporary counterweights that are used to balance the main gate leaf for handling and installation shall be painted but not metallized. The temporary counterweights will remain with the gate and will be removed by others after installation is completed.

SECTION 35 20 16.53 Page 6

1.5 DELIVERY, STORAGE, AND HANDLING

Delivery, storage and handling of the items to be fabricated under this contract shall be in accordance with Section 35 05 70.00 08 DELIVERY AND

STORAGE OF DAM LIFT GATES

PART 2 PRODUCTS

2.1 MATERIALS

Materials orders, material lists and material shipping bills shall conform with the requirements of Section 05 50 14.00 08 STRUCTURAL METAL FABRICATIONS AND MISCELLANEOUS METALWORK and Section 05 59 13 FABRICATION

OF HYDRAULIC STEEL STRUCTURES.

2.1.1 Rubber Seals

Vertical side seals shall consist of fluorocarbon-clad rubber. Bottom seal shall consist of a non-clad rubber. Rubber for seals shall be a compounded of natural rubber, synthetic polyisoprene, or a blend of both, and shall contain reinforcing carbon black, zinc oxide, accelerators, antioxidants, vulcanizing agents, and plasticizers.

2.1.1.1 Physical Characteristics

Physical characteristics of the seals shall meet the following requirements:

PHYSICAL TEST TEST VALUE TEST METHOD SPECIFICATION

Tensile Strength 2500 psi (min.) ASTM D412

Elongation at Break 450 percent (min.) ASTM D412

300 percent 900 psi (min.) ASTM D412

Durometer Hardness (Shore Type A)

60 to 70 ASTM D2240

*Water Absorption 5 percent by weight (max.) ASTM D471

Compression Set 30 percent (max.) ASTM D395

Tensile Strength (after aging 48 hrs)

80 percent of tensile strength (min.)

ASTM D572

The "Water Absorption" test shall be performed with distilled water. The washed specimen shall be blotted dry with filter paper or other absorbent material and suspended by means of small glass rods in the oven at a temperature of 70 degrees C plus or minus 2 degrees for 22 hours plus or minus 1/4 hour. The specimen shall be removed, allowed to cool to room temperature in air, and weighed. The weight shall be recorded to the nearest 1 mg as M subscript 1 (M subscript 1 is defined in ASTM D471).

The immersion temperature shall be 70 degrees C plus or minus 1 degree and the duration of immersion shall be 166 hours.

SECTION 35 20 16.53 Page 7

2.1.1.2 Fabrication of Rubber Seals

Rubber seals shall have a fluorocarbon film vulcanized and bonded to the sealing surface of the bulb. The film shall be 0.060 inches thick Huntington Abrasion Resistant Fluorocarbon Film No. 4508, or equal, and shall have the following physical properties:

Tensile strength 2,000 psi (min.)

Elongation 250 percent (min.)

The outside surface of the bonded film shall be flush with the surface of the rubber seal and shall be free of adhering or bonded rubber. Strips and corner seals shall be molded in lengths suitable for obtaining the finish lengths shown and with sufficient excess length to provide test specimens for testing the adequacy of the adhesion bond between the film and bulb of the seal. At one end of each strip or corner seal to be tested, the fluorocarbon film shall be masked during bonding to prevent a bond for a length sufficient to hold the film securely during testing.

2.1.1.3 Fluorocarbon (Teflon) Coating for Seals

Vertical seals shall have a fluorocarbon film vulcanized and bonded to the sealing surface of the bulb. The film shall be 0.060 inches thick Huntington Abrasion Resistant Fluorocarbon Film No. 4508, or equal, and shall have the following physical properties:

Tensile strength ............ 13.8 MPa (min.)

Elongation .................. 250 percent (min.)

Tensile strength ............ 2,000 psi (min.)

Elongation .................. 250 percent (min.)

The outside surface of the bonded film shall be flush with the surface of the rubber seal and shall be free of adhering or bonded rubber. Strips and corner seals shall be molded in lengths suitable for obtaining the finish lengths shown and with sufficient excess length to provide test specimens for testing the adequacy of the adhesion bond between the film and bulb of the seal. At one end of each strip or corner seal to be tested, the fluorocarbon film shall be masked during bonding to prevent a bond for a length sufficient to hold the film securely during testing.

2.2 MANUFACTURED UNITS

Bolts, nuts, washers, screws and other manufactured units shall conform with the requirements as shown and as specified and in Section

05 50 14.00 08 STRUCTURAL METAL FABRICATIONS AND MISCELLANEOUS METALWORK.

2.3 FABRICATION

2.3.1 Detail Drawings

Detail drawings, including fabrication drawings and shop assembly drawings, delivery drawings, shall conform to the requirements specified and in Section 05 59 13 FABRICATION OF HYDRAULIC STEEL STRUCTURES.

SECTION 35 20 16.53 Page 8

2.3.1.1 Fabrication Drawings

Fabrication drawings shall show complete details of materials, tolerances, connections, and proposed welding sequences which clearly differentiate shop welds and field welds.

2.3.1.2 Shop Assembly Drawings

Shop assembly drawings shall provide details for connecting the adjoining fabricated components in the shop to assure satisfactory field installation.

2.3.2 Structural Fabrication

Structural fabrication shall conform to the requirements as shown and specified herein and in Section 05 59 13 FABRICATION OF HYDRAULIC STEEL STRUCTURES. Dimensional tolerances shall be as specified and as shown.

The dimensional tolerance for the length of the lift gate shall be plus or minus + 1/8 inch at an ambient temperature of 70 degrees F. Splices shall occur only where shown. Pin holes shall be bored in components after welding, straightening, stress-relieving, and threading operations are completed. Brackets, eye bar sections, and other components requiring straightening shall be straightened by methods which will not damage the material. Bushings shall be press-fitted with supporting components.

Bolt connections, lugs, clips, or other pick-up assembly devices shall be provided for components as shown and required for proper assembly and installation. The cathodic protection system for the new lift gate shall be comprised of a system of metallizing as described in Section 09 97 01.00 10 METALLIZING: HYDRAULIC STRUCTURES, and paint as described in Section 09 97 02 PAINTING: HYDRAULIC STRUCTURES.

2.3.2.1 Welding

Welding shall conform with the requirements specified and in Section 05 59 13 FABRICATION OF HYDRAULIC STEEL STRUCTURES. Welds shall be of the type shown and approved detail drawings. Welds which have been designated to receive radiographic examination and are found to be inaccessible to a radiation source or film, or are otherwise situated where radiographic examination is not feasible may be examined, with written approval, by dye penetrant, magnetic particle tests, or ultrasonic tests. Components shall be stress-relief heat treated after welding where shown. Stress-relieving of components shall be performed prior to the attachment of miscellaneous appurtenances.

2.3.2.2 Bolted Connections

Bolted connections shall conform with the requirements specified in Section 05 59 13 FABRICATION OF HYDRAULIC STEEL STRUCTURES.

2.3.2.3 Machine Work

Machine work shall conform with the requirements specified in Section

05 59 13 FABRICATION OF HYDRAULIC STEEL STRUCTURES.

2.3.2.4 Miscellaneous Provisions

Miscellaneous provisions for fabrication shall conform with the requirements specified herein and in Section 05 59 13 FABRICATION OF

HYDRAULIC STEEL STRUCTURES.

SECTION 35 20 16.53 Page 9

2.3.3 Lift Gates

2.3.3.1 General

Lift gates shall be a wheeled gate-type framing of single-component structural fabrication. The gate shall be shop fabricated and shall be furnished in the form of a main gate leaf, two end assemblies and miscellaneous components to be assembled in the field within the gate bay.

The main gate leaf shall include the complete structural framing and skin plate. The main gate leaf shall be fabricated in one piece. Furnishing the gate leaf in sections for field assembly will not be permitted. The main gate leaf and end assemblies shall be thermally stress relieved prior to the attachment of end assemblies, side and bottom seal assemblies and other appurtenant items. Stress relief heat treatment shall be in accordance with the requirements of AWS D1.5M/D1.5 unless otherwise authorized or directed.

End assemblies shall be provided complete with lifting brackets and sprockets, wheels and guide rollers, side seal assemblies, guides, and plates.

Miscellaneous components shall include access walkway and service platform framing, ladders, grating, and other appurtenant items required for installation and proper operation.

2.3.3.2 Gate Lifting Brackets and Sprockets

Fabrication details of the gate lifting brackets and sprockets shall be closely coordinated with the details of the lifting chains to assure proper connection and operation. See Reference drawings for lifting chain details.

2.3.3.3 Wheels and Guide Rollers

Gate wheels and guide rollers shall be products of a manufacturer regularly engaged in the manufacture of such products. Each wheel and roller shall be provided complete with wheel, shaft, roller bearings, lock washers, lock nuts, bearing covers, seal housings, grease seals, seal retainers, shaft lock plates, lubrication fittings, fasteners, and other accessories as required for complete and proper installation. Materials for wheels and guide rollers shall be as shown on the drawings. External wheel and roller dimensions shall not be changed from that shown.

Internal dimensions and tolerances of other components may be changed as required for compatibility with the manufacturer's products.

2.3.3.4 Gate Frame and Guides

Exposed non-machined surfaces of the gate frame and guides shall match at joints between component parts, shall not depart from true planes shown by more than 1/16 inch, and shall be free of offsets or irregularities greater than 1/16 inch. Allowable offsets or irregularities less than 1/16 inch shall be ground to a bevel of not greater than one on twenty-four. Surfaces of frames and guides to receive seal bars and wheel track bars shall be accurately machined to provide uniform bearing for the full contact dimensions. Seal bars shall be firmly butted together at corners. Bearing surfaces of wheel track bars and sealing surfaces of

SECTION 35 20 16.53 Page 10 seal bars shall be machined to the tolerances shown to provide uniform bearing and sealing at all points of contact. Final machining of seal bars and wheel track bars shall be performed after they are attached to the gate frame and guides. Anchor bolt holes for gate frame and guides shall be accurately located using templates which provide the installation location of anchor bolts.

2.3.3.5 Appurtenant Items

The fabrication requirements for handrail, ladders, walkway and platform framing, steel grating, and other appurtenant items shall conform to the details shown.

2.3.4 Appurtenant Items

The fabrication requirements for embedded metals and other appurtenant items shall conform to the details shown.

2.3.5 Shop Assembly

Shop assembly requirements for gate, gate frame, end assemblies, and appurtenant items shall be as shown and as specified and in Section

05 50 14.00 08 STRUCTURAL METAL FABRICATIONS AND MISCELLANEOUS METALWORK

and Section 05 59 13 FABRICATION OF HYDRAULIC STEEL STRUCTURES. Gate, frame, guides, and appurtenant items shall be assembled completely in the shop to assure satisfactory field installation. The matchmarking of unassembled components shall be carefully preserved until the components are assembled. Adequate support shall be provided during assembly to maintain components within 1/16 inch of actual installation planes.

Mating surfaces and machined surfaces shall be coated with a rust preventive coating until assembled. Other connecting surfaces which are not required to be disassembled for shipment shall be thinly coated with an approved rust preventive coating before being joined. Adjoining components shall be fitted and bolted together to facilitate field connections. Shop assembled components shall be delivered assembled, if practically permitted by shipping conditions. Assembled components shall be shop welded in their final positions as much as delivery conditions allow. Shop assembly and disassembly work shall be performed in the presence of the Contracting Officer unless otherwise approved. The presence of the Contracting Officer will not relieve the Contractor of any responsibility under this contract.

2.3.5.1 Sprockets

Idler and drive sprockets shall be manufactured in accordance with the details provided on Reference Drawings 106713, A4477-1, A4477-2, A4477-3, and A4477-4; and requirements specified in Section 05 50 14.00 08 STRUCTURAL METAL FABRICATIONS AND MISCELLANEOUS METALWORK. Idler ssprockets shall be accurately positioned and set to the proper lifting point in the shop. The vertical and horizontal centerlines of the sprocket shall not be greater than 1/16 of an inch from the theoretical location. The drive sprockets shall be crated for shipment with the gates.

One additional spare drive sprocket shall be furnished.

2.3.5.2 End Assemblies

End assemblies shall be supported in the horizontal position for adjusting wheels and guide rollers so that the wheels/rollers are free to rotate to allow the proper adjustment. End assemblies shall be delivered separate

SECTION 35 20 16.53 Page 11 from the main gate leaf to facilitate installation. Once the gate has been assembled in the bay, wheels and rollers shall be adjusted so that the wheels remain perpendicular to the gate frame and the contact surfaces of the wheels on each side of the gate are in a single plane within 0.005 inch when rotated 360 degrees. The final adjustment of wheels and rollers shall be made after the gate is fully assembled. The top of each wheel shall be tapped to ensure that the weight of the wheel assembly has caused the shaft to bear firmly on the supporting framing of the gate. Wheels and guide rollers shall then be adjusted so that the tolerance on the distance between the plane through the downstream faces of the wheels and the plane through the downstream machined surfaces of the side bar supports for the seal assemblies shall not exceed 1/32 inch. After wheels and rollers have been adjusted, they shall be locked in position by drilling the lock plate, support plate, and shaft and installing cap screws as shown. Wheel assemblies shall be lubricated after being locked in position with a lubricant that is suitable for underwater operation, equal to the lubricant recommended by the manufacturer of the wheel roller bearings, and as approved. Additional lubricant shall be applied at regular intervals until final acceptance of the work.

2.3.5.3 Lubrication System

All wheels, rollers and moving parts of the gate end assemblies will be lubricated through a system of grease lines that lead to a common terminal block as shown on the Reference Drawings. After fabrication and shop fitting, the grease lines shall be removed, crated and shipped separately from the gate. Each component requiring lubrication is equipped with a separate grease fitting. The separate grease line shall be routed from each wheel and roller to a common terminal block that is mounted just above the top of the grating on the end assembly. All grease lines are a minimum of 1/4-inch diameter stainless steel tubing. All lines shall be routes to the common stainless steel termination block with a button fitting provided for each line in the block. All fittings shall be accessed on the top of the termination block. The top of the termination block shall be no more than 10-inches above the top of the grating.

Grease lines shall be fastened with stainless steel fasteners and supported with stainless steel unistrut where necessary. The Contractor shall submit the layout for the lubrication system to the Contracting Officer for review and approval.

2.3.5.4 Seals

Seals shall be attached to the gate during shop assembly and removed for shipment. Seals shall be fitted by the fabricator to the gate in the shop by butting side seal assemblies with the bottom seal assembly, one to the other, as shown. The ends of all pieces shall be cut at right angles, not beveled. Seals shall be cut and/or dressed, slightly longer than required to permit such field fitting without buckling or misalignment. No cement shall be used during such shop fit up. Once proper shop fit up has been achieved, the seals shall be removed from the gate and appropriately packaged for shipment.

2.4 TESTS, INSPECTIONS, AND VERIFICATIONS

Tests, inspections, and verifications for materials and fabricated items shall conform to the requirements specified and in Section 05 59 13

FABRICATION OF HYDRAULIC STEEL STRUCTURES.

SECTION 35 20 16.53 Page 12

2.4.1 Testing of Rubber Seals

The fluorocarbon film of rubber seals shall be tested for adhesion bond in accordance with ASTM D413 using either the machine method or the deadweight method. A 1 inch long piece of seal shall be cut from the end of the seal which has been masked and subjected to tension at an angle approximately 90 degrees to the rubber surface. There shall be no separation between the fluorocarbon film and the rubber when subjected to the following loads:

THICKNESS OF

FLUOROCARBON FILM

MACHINE METHOD AT 2 INCHES PER

MINUTE

DEADWEIGHT METHOD

0.030 in. 30 lbs per inch width 30 lbs per inch width

0.060 in. 30 lbs per inch width 30 lbs per inch width

2.4.2 Inspection

Shop assembled components shall be inspected for accurate fit and compliance with dimensional tolerances. Sealing, guiding, and connecting surfaces shall be inspected to determine if their planes are true, parallel, and in uniform contact with opposing surfaces. With the gate leaf closed and uniformly blocked in the sealing position, gate leaf rollers, bar seals, and rubber seals shall be inspected to determine if they are in continuous contact with seal plates. Compression of rubber seals shall not vary by more than 1/32 inch. It shall not be possible to insert a feeler gauge of greater than 0.005 inch thickness at any point between bar seals and seal plates.

PART 3 EXECUTION

3.1 PAINTING

Exposed parts of the gate and appurtenance components, except machined surfaces, corrosion-resistant surfaces, surfaces of anchorages embedded in concrete, and other specified surfaces, shall be metallized as specified in Section 09 97 01.00 10 METALLIZING: HYDRAULIC STRUCTURES, and painted as specified in Section 09 97 02 PAINTING: HYDRAULIC STRUCTURES.

3.2 PROTECTION OF FINISHED WORK

Protection of finished work shall conform to the requirements of Section

05 50 14.00 08 STRUCTURAL METAL FABRICATIONS AND MISCELLANEOUS METALWORK

and Section 05 59 13 FABRICATION OF HYDRAULIC STEEL STRUCTURES.

-- End of Section --

SECTION 35 20 16.53 Page 13

1.5 DELIVERY, STORAGE, AND HANDLING