Amendment_A002.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

1. CONTRACT ID CODE

N/A

PAGE

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

A002 09/17/2018 N/A WA RRP RIDG 100(2)

River S Bridge Replacement

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

Department of Transportation Federal Highway Administration 610 East Fifth Street Vancouver WA 98661-3801

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and Zip Code) 9A. AMENDMENT OF SOLICITATION NO.

X

DTFH7017B00007

9B. DATED (SEE ITEM 11)

08/29/2018

10A. MODIFICATION OF CONTRACT/ORDER NO.

N/A

10B. DATED (SEE ITEM 13)

CODE: N/A FACILITY CODE: N/A

N/A

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 Offers

(__ ) is extended, ( x ) is not extended.

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 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)

N/A

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.

N/A

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)

N/A

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

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

WA RRP RIDG 100(2), River S Bridge Replacement

Amendment A002 is issued to revise the following:

SPECIAL CONTRACT REQUIREMENTS

Page F-16, Subsection 276.04 Ground Improvement Design Requirements. Revises requirements.

Page G-5, Subsection 710.07 Guardrail posts. Adds requirements.

ENCLOSURES:

Pages F-16 and G-5

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) 15a. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

N/A

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

BY_________________________________________ BY N/A___________________________ N/A (Signature of person authorized to sign) (Signature of Contracting Officer)

NSN 7540-01-152-8070

PREVIOUS EDITION NOT USABLE

30-105 STANDARD FORM 30 (REV. 10-83)

Prescribed by GSA

FAR (48 CFR) 53.243

F-16 DIVISION 250

Special Contract Requirements Project: WA RRP RIDG 100(2), River S Bridge Replacement the center-point and a ground improvement element. Provide graphic logs and electronic CPT data to the CO for information only.

276.04 Ground Improvement Design Requirements. Design the ground improvement system according to the following requirements:

(a) Design the stone columns and aggregate piers to be a minimum average diameter of 20 inches, circular in cross-section, continuous, and plumb.

(b) Design the layout for a minimum area replacement ratio of 0.2. Design the outer edges of the aggregate portion of the ground improvement elements to be tangent with the plan boundaries of the ground improvement zone. Specify the minimum element diameter and center to center spacing. Determine the ground improvement element diameter and spacing by the following equations:

Rs = 0.785(D/S)2 Rt = 0.907(D/S)2

Where: Rs = area replacement ratio for a square pattern Rt = area replacement ratio for an equilateral triangular pattern D = diameter of ground improvement element (feet) S = spacing (center to center) of ground improvement element (feet)

(c) Design the spacing to be a uniform pattern (square or equilateral triangle).

(d) Design the reinforced/improved zone from the top elevation shown on the plans to the bottom elevation shown on the plans.

(e) Design the construction sequence to preserve slope stability due to the lateral deformation of the soils, if located near a free-face slope or stream bank.

(f) Design the ground improvement to avoid structures within the reinforced/improved zone and use cement-treated aggregate or other suitable means to avoid detrimental impact to the element. Design the row of stone columns or aggregate piers adjacent to the drilled shafts at Abutment 1 to be cement-treated to avoid damage to these ground improvement elements during drilled shaft excavation.

(g) If Timber Piles with PVD’s are proposed, design timber piles with PVDs to a maximum spacing of 3D on a triangular pattern, where D is the butt diameter of the pile at the top elevation of the ground improvement zone. Provide PVD attachment details and quality control procedures for confirmation of the survivability of the PVDs if attached whether predrilling is used or not. Provide details for cutoff and wood preservative treatment of cutoff piling adhering to subsection 715.02.

Revised by Amendment A002

G-5 DIVISION 700

Special Contract Requirements Project: WA RRP RIDG 100(2), River S Bridge Replacement

Section 710. — FENCE AND GUARDRAIL

710.03 Chain Link Fence. Add the following:

Furnish brown vinyl clad chain link fabric conforming to AASHTO M 181, Type IV.

710.07 Guardrail posts. Add the following to paragraph (b) Steel.

For G4 guardrail systems, with type IV steel guardrails; install steel posts meeting ASTM A709 (AASHTO M270), Grade 50W.

Revised by Amendment A002