Amendment 0002_Mar20212.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

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

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

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

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

FAR (48 CFR) 53.243

The Purpose of this amendment is to answer Questions and Answers and to add requirement for a Bid Bond.

1. CONTRACT ID CODE PAGE OF PAGES

1 2

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

16C. DATE SIGNED

BY

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 W912P421R0004

X 9B. DATED (SEE ITEM 11)

29-Jan-2021

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 le tter, 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

03-Mar-2021

CODE

U.S. ARMY ENGINEER DISTRICT, BUFFALO

1776 NIAGARA STREET

BUFFALO NY 14207-3199

W912P4 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912P421R0004

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION A - SOLICITATION/CONTRACT FORM

The required response date/time has changed from 08-Mar-2021 02:00 PM to 10-Mar-2021 02:00 PM.

SECTION L - INSTRUCTIONS, CONDITIONS AND NOTICES TO BIDDERS

The following have been added by full text:

52.228-1 BID GUARANTEE (SEP 1996)

(a) Failure to furnish a bid guarantee in the proper form and amount, by the time set for opening of bids, may be cause for rejection of the bid.

(b) The bidder shall furnish a bid guarantee in the form of a firm commitment, e.g., bid bond supported by good and sufficient surety or sureties acceptable to the Government, postal money order, certified check, cashier's check, irrevocable letter of credit, or, under Treasury Department regulations, certain bonds or notes of the United States.

The Contracting Officer will return bid guarantees, other than bid bonds, (1) to unsuccessful bidders as soon as practicable after the opening of bids, and (2) to the successful bidder upon execution of contractual documents and bonds (including any necessary coinsurance or reinsurance agreements), as required by the bid as accepted.-

(c) The amount of the bid guarantee shall be 20% percent of the bid price or $3,000,000, whichever is less.-

(d) If the successful bidder, upon acceptance of its bid by the Government within the period specified for acceptance, fails to execute all contractual documents or furnish executed bond(s) within 10 days after receipt of the forms by the bidder, the Contracting Officer may terminate the contract for default.-

(e) In the event the contract is terminated for default, the bidder is liable for any cost of acquiring the work that exceeds the amount of its bid, and the bid guarantee is available to offset the difference.

(End of provision)

(End of Summary of Changes)

Question 1:

If we weld these intercostals (L 3.5 x 3.5 x ½ ) to the skin plate panels before assembling, we cannot install them because the angles are longer than the distance between vertical beams.

If we weld them after assembling all the paint will be destroyed.

Even if we manage to insert the intercostals between the vertical beams, the weld between angle edge and the vertical beam will damage the paint.

We cannot paint after assembly because we are assembling outdoors but even if we do paint after assembly the contact surfaces between the components will remain unpainted.

Answer:

The ends of the intercostals are to be welded to the inside edges of the vertical girder flanges, as well as the skin plate of the gate. These welds would by necessity have to be performed during assembly and as such it was expected that these sections would be painted either in the field or during final touch-up of paint. The locations of where these welds on the vertical beams/ girders and the skin plates can be taped off during the initial blast and painting weld locations are shown on the plans.

Question from 2:

Who is responsible for offloading from the Barge?

Answer:

USACE floating plant is responsible for offloading the barges once they are delivered to the lock

Question from 3:

We have no idea what option E & F is in the bid schedule?

Answer:

The anchorage links are shown on sheet S-565.The sheet title is mislabeled as “Details Sill Bearing Assembly” rather than “Details anchorage links”. The “left” and “right” hand side is indication of the anchorage openings being mirrored.

Question from 4:

Also following items are part of the supply Per 2.3.7, but there is no information about them:

- Cathodic protection

- Grease lines

- Operation struts

Answer:

The operating strut is part of the gate shown on sheet S-560. The reference to cathartic protection is incorrect and should be removed. The grease lines for the pintle and gudgeon are to be field routed by the contractor.

Question from 5:

Can we request that the 3D model of the pintle casting

Answer:

No 3D models will be given out at this time.. 3D models may be available for any of the gate components after award of the contract. A component weight can be provided for the purpose of determining a cost for the casting.

Question from 6:

I took a look at the drawings but did not see a weight. Can you advise?

Answer:

Current gate weight estimate is approximately 173,920 lbs.

Questions 7 Is there a Bid Bond Required on top of the Performance and Payment Bond?

Yes, a bid bond is required. The amendment will reflect this.

Can the gates ship laying down on the barge? – Yes, the gates can be shipped laying down on a barge but will need to be laid down to avoid any damage to the gates. This is explained in section 01 35 13 in the project specifications.

Will the government handle the unloading of the barges once the gates arrive? -Yes, Government floating plant will be performing the unloading of the barges containing the gates once they have been delivered.

Drawing S-561 states details A9 and D1 are to be A709 Gr50. However, the thickness limitation for A709 Gr50 is 4”. Can you please clarify the equivalent material? – These material callouts are part of amendment to be sent out. Gudgeon pin is to be made from AISI 4140 HT while bushings are to be made from ASTM B148 Copper alloy.

Drawing S-521 states details E5 are to be A709 Gr50. However, the thickness limitation for A709 Gr50 is 4”. Can you please clarify the equivalent material? – Material is to be ASTM A572, Gr 42 steel. This will be changed in an upcoming amendment.

Is the material called out on S-521-A1 to be A709 GR50 as noted? -Cotter pin material can be ASTM A36 steel

Can you please clarify the thickness of item S-521-E3? -Plate thickness is 1” Is the material called out on S-561-D3 & D1-Bushings to be A709 GR50 as noted? -Bushings are to be made from ASTM B148 Copper alloy. This change will be made in the amendment.

Item S-520-A9 calls our A709 GR50 for the material, but the thickness limitations are 4”.

Typically the welded end section of these diagonals is a forging. The drawing also calls out the weld to be at the end of the threaded bar, but typically the weld is at the end of the flat bar. Can you please clarify the welding location? – The top of the diagonal will be changed to be ASTM A36 steel, the weld location is changed in the most recent amendment.

Questions from 8

I noticed on this project the AISC qualification required to have Fracture critical ,Major Bridge ,and or Hydraulic certifications for a period of 5 years to be considered for award ,other projects we have bid such as sector gates require to prove the company does have these certification and has performed like type fabrications and does not require the 5 year certification requirement Why is the qualifications different from the sector gates and Miter gates ? Is the Corp willing to waive the 5 years certification requirement for this project?

Due to the complex fabrication and tight tolerances for the project the 5-year requirements will not be waived.

Questions 9

1. Drawing S-535 calls for the pintle ball to be A668 Class K while spec section 35 20 16.33 subsection 2.3.6.4 calls for the ball to be A668 Class D. Please clarify material requirement. – The pintle ball is to be fabricated from A668 Class D.

2. Drawing S-537 calls for the pintle base to be a casting A148 Gr. 90-60 while spec section 35 20 16.33 subsection 2.3.6.4 calls for the base to be A668 Gr. 90-60 (A668 is a forging spec). Please clarify material requirement. -Pintle Base is to be fabricated from A148 Gr. 90-60

3. Drawing S-548 calls for the contact blocks to be A668 Class D material while spec section 35 20 16.33 subsection 2.3.6.3 calls for the blocks to be of A276 or A564. Please clarify material requirement. -The plans are correct and the contact blocks are to be fabricated from A668 Class D steel.

4. Please verify bushings S-561-D1 & D3 are to be A709-50 Material. Note, A709-50 spec max thickness is 4”. - These material callouts are part of amendment to be sent out. Gudgeon pin is to be made from AISI 4140 HT while bushings are to be made from ASTM B148 Copper alloy No C95400.

5. Please supply alloy group for pintle bushing S-535-A4 (ASTM B148). -Aluminum bronze is to meet ASTM B148 Copper alloy No C95400

6. Section 2.1 states “Valves shall be rated for an operating pressure differential of up to 10 psi due to the difference in upper and lower lock pool elevations.” Section 2.1.2 states “1. Valves shall be designed so that, when subjected to a maximum head of 15 feet, a stress safety factor of 3 on the material yield strength or 5 on the material ultimate strength (whichever is lower) is not exceeded.” The pressure due to 15’ head difference is 15 ft * 62.4 pcf = 936 psf = 6.5 psi. The 10psi noted in 2.1 and the head difference of 15ft (6.5 psi) don’t seem to match. Is the system to be designed for 10 psi or 6.5 psi?

The rated operating pressure and the design parameters are different things. In this case, the valve must be rated for at least 10 psi. It must also be designed so that when loaded at 15 ft of head, calculated stresses stay below the material yield strength/3 or material ultimate strength/5 (whichever is lower).