Amendment 0004 - Project NC NP BLRI 2A16.pdf

(x)

693C7323B000013 x x

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 electronic communication which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGEMENT 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 letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

x

ASHBURN VA 20147

ATTN: CONSTRUCTION

693C73

SUITE E2-3-300

QUANTUM PARK, 22001 LOUDOUN COUNTY PKWY

EASTERN FEDERAL LANDS HIGHWAY DIVISION

FEDERAL HIGHWAY ADMINISTRATION

ASHBURN VA 20147

ATTN: ACQUISITIONS

693C73

SUITE E2-3-300

QUANTUM PARK, 22001 LOUDOUN COUNTY PKWY

EASTERN FEDERAL LANDS HIGHWAY DIVISION

FEDERAL HIGHWAY ADMINISTRATION

See Block 1408/03/20230004

13. THIS ITEM ONLY APPLIES TO MODIFICATION OF CONTRACTS/ORDERS. IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

12. ACCOUNTING AND APPROPRIATION DATA (If required) is not extended.is extended, Items 8 and 15, and returning

Offers 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

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

FACILITY CODE CODE

10B. DATED (SEE ITEM 13)

10A. MODIFICATION OF CONTRACT/ORDER NO.

9B. DATED (SEE ITEM 11)

9A. AMENDMENT OF SOLICITATION NO.

CODE

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP Code)

7. ADMINISTERED BY (If other than Item 6)CODE 6. ISSUED BY

PAGE OF PAGES

4. REQUISITION/PURCHASE REQ. NO.3. EFFECTIVE DATE2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO. (If applicable)

1. CONTRACT ID CODE

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

07/07/2023

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

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority) appropriation data, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

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

ORDER NO. IN ITEM 10A.

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

Project NC NP BLRI 2A16:

The purpose of this Amendment is to:

1) Provide response to bidder question.

2) The Bid Opening date of August 8, 2023, at 2:00 p.m. EDT remains unchanged.

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)15A. NAME AND TITLE OF SIGNER (Type or print)

15C. DATE SIGNED 16B. UNITED STATES OF AMERICA 15B. CONTRACTOR/OFFEROR 16C. DATE SIGNED

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

STANDARD FORM 30 (REV. 11/2016)

Prescribed by GSA FAR (48 CFR) 53.243

Previous edition unusable

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

Amendment 0004

Info Page 1 of 1

U.S. DEPARTMENT OF TRANSPORTATION

FEDERAL HIGHWAY ADMINISTRATION

EASTERN FEDERAL LANDS HIGHWAY DIVISION

Amendment No. 0004 Project NC NP BLRI 2A16

Blue Ridge Parkway Solicitation: 693C73-23-B-000013

The purpose of this Amendment is to:

1) Provide response to bidder question.

2) The Bid Opening date of August 8, 2023, at 2:00 p.m. EDT remains unchanged.

Bidder Question and Response

1) Bidder Question: In reference to the micropile design specified in the drawing, could you confirm whether a casing with a 7" diameter and a .73" wall thickness, along with a 2 1/2" diameter GR 150 threaded bar, is indeed the intended specification? It is worth noting that the specified wall thickness for the casing is uncommon. If you could provide us with the required loading information, we believe there may be opportunities to explore more cost-effective alternatives while still satisfying the required loads.

Response: Maximum Allowable Micropile Deflection = 1 inch

Provide a minimum core reinforcement of 2½ in diameter grade 80 and casing (both) (even when is not needed by design).

See Micropile Load Specifications.

BRIDGE 077

ABUTMENT

Pile group loads (Service)

Pvertical = 1272 kips

Vz(longitudinal) = 64.35 kips

Vx(Transverse) = 24.22 kips

PIER

Pile group loads (Service)

Pvertical = 1605.6 kips

Vz(longitudinal) = 8.72 kips

Vx(Transverse) = 39.45 kips

BRIDGE 80

ABUTMENT

Pile group loads (Service)

Pvertical = 1010 kips

Vz(longitudinal) = 62 kips

Vx(Transverse) = 3 kips

BRIDGE 81

ABUTMENT

Pile group loads (Service)

Pvertical = 1489.4 kips

Vz(longitudinal) = 69.92 kips

Vx(Transverse) = 5.06 kips

MAXIMUM ALLOWABLE MICROPILE DEFLECTION = 1 inch

Provide a minimum core reinforcement of 2½ in diameter grade 80 and casing (both) (even when is not needed by design)

Micropile Load Specifications for Project NC NP BLRI 2A16

BRIDGE 077

ABUTMENT

Pile group loads (Factored)

Pvertical = 1681.4 kips

Vz(longitudinal) = 89.24 kips

Vx(Transverse) = 32.61 kips

PIER

Pile group loads (Factored)

Pvertical = 2091.52 kips

Vz(longitudinal) = 11.36 kips

Vx(Transverse) = 47.20 kips

BRIDGE 80

ABUTMENT

Pile group loads (Factored)

Pvertical = 1350 kips

Vz(longitudinal) = 85.65 kips

Vx(Transverse) = 3. kips

BRIDGE 81

ABUTMENT

Pile group loads (Factored)

Pvertical = 2000 kips

Vz(longitudinal) = 96.41 kips

Vx(Transverse) = 8.99 kips