Amendment A008.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)

A008 11/12/2024 N/A MT FLAP BOR 2980(1)

Sun River 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

69056724B000016

9B. DATED (SEE ITEM 11)

10/15/2024

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).

N/A

C THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

N/A

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.)

MT FLAP BOR 2980(1), Sun River Bridge Replacement

See Page 2

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

Amendment No. A008, dated 11/12/24 Project No. MT FLAP BOR 2980(1) Solicitation No. 6905672B000016 Project Name Sun River Bridge Replacement

REVISIONS ARE AS FOLLOWS:

SPECIAL CONTRACT REQUIREMENTS

Page F-16 Subsection 552.02 Material, Add Structural concrete stain.

Page F-17 Subsection 552.03 Composition (concrete Mix Design), Add the following: revises paragraphs 1 and 2.

Page F-23 through F-23a, Subsection 552.16 Finishing Formed Concrete Surfaces, delete paragraph (f) and substitute the following: (f) Class 6 – Color Finish.

Page F-27 Subsection 585.02 Material, Adds Structural Concrete Stain.

Page F-28 Subsection 585.04 Composition (Ultra-High Performance Concrete Mix Design).

revises paragraph 5 and 6

Page G-9a Section 719-Paint added subsection 719.10 Structural Concrete Stain.

ENCLOSURES

Pages:

F-16 through F-17 F-23 through F 23a F-27 through F-28 G-9a

F-16 DIVISION 550

Special Contract Requirements Project: MT FLAP BOR 2980(1), Sun River Bridge Replacement

Section 552. — STRUCTURAL CONCRETE

11/08/21–FP14

Material

552.02 Add the following to the material list:

Concrete coloring agent 711.05 Structural concrete stain 719.10

Construction Requirements

552.03 Composition (Concrete Mix Design). Amend as follows:

Delete the first paragraph and substitute the following:

Design and produce concrete mixtures that conform to Tables 552-1, 552-2, and 552-3 as required for the class specified. Determine design strength values according to Section 4 of ACI 301, Specifications for Structural Concrete.

Delete Table 552-1 and substitute the following:

Table 552-1 Composition of Concrete

Class of Concrete

Minimum Compressive Strength @ 28-Days, f’c, psi (MPa)

Maximum Water/Cementitious

Material Ratio

Coarse Aggregate Size Number

AASHTO M 43(1)

A 4500 (31.0) 0.45 5, 56, 57, 6, 67, 68

A(AE) 4500 (31.0) 0.45 5, 56, 57, 6, 67, 68

A (Drilled Shafts) 4500 (31.0) 0.45 8, 89

C 4500 (31.0) 0.45 7, 78

C(AE) 4500 (31.0) 0.45 7, 78

D(AE)(2) 5000 (34.5) 0.40 5, 56, 57, 6, 67, 68

P (Prestressed)(3) See plans — 6,7,67,68,78

P(AE)(3) See plans — 6,7,67,68,78

S (Seal) — 0.54 5, 56, 57

(1) Meet the processing requirements of AASHTO M 43, Table 1 – Standard Sizes of Processed Aggregate.

(2) The maximum water-soluble chloride ion (Cl-) content is 0.15 percent by mass of cement. Determine the water-soluble chloride ion content of concrete made with mix ingredients at an age between 28 and 48 days according to ASTM C1218. Submit test results with the concrete mix design for approval.

(3) The maximum water-soluble chloride ion (Cl-) content is 0.06 percent by mass of cement. Determine the water-soluble chloride ion content of concrete made with mix ingredients at an age between 28 and 48 days according to ASTM C1218. Submit test results with the concrete mix design for approval.

Revised by Amendment A008

F-17 DIVISION 550

Project: MT FLAP BOR 2980(1), Sun River Bridge Replacement

Delete the first sentence of the third paragraph and substitute the following:

Verify the mixture design through trial mixes prepared in accordance with Section 4 of ACI 301, using materials from proposed sources. Alternatively, submit previous concrete production data for the proposed mixture design using materials from the intended sources. Upon acceptance of the proposed mix design, submit a plan for review and approval to batch, transport, and place a truckload (or equivalent volume) of concrete at the project site. This demonstration will verify adherence to contract requirements for batching, transporting, and placing production concrete. If demonstration fails to comply with contract requires, repeat test as necessary.

Delete the last sentence from paragraph (l)(3) and substitute the following:

The maximum allowable design discharge time is 3½ hours unless otherwise approved by the CO.

Delete paragraph (w) and substitute the following:

(w) Specified design strength (f’

c) and required average strength (f’

cr) for the concrete mixture at 28 days as determined by the process described in Section 4 of ACI 301. This process and associated calculations are outlined on FHWA Form 1608, pages 4 and 5. Pending 28-day strength results, a mix design may be approved on the basis that 7-day compressive strength results meet or exceed 85 percent of the required average strength (f’

cr) at 28 days;

Add the following:

Add a coloring agent to provide integrally colored concrete or apply a concrete stain according to Subsection 552.16 for pay items 55201-0200, Structural Concrete, Class A(AE), 55302-2100, Precast, Prestressed Concrete Bulb Tee Girder, 74-Inch, and 55301-3500, Precast, Prestressed Concrete Slab. Add enough agent to match the Standard Color Chart Number #10059 of Federal Specification 595B once concrete has cured.

For integral colored Concrete Pprepare five square textured test panels with each panel being 12 by 12 inches (300 by 300 millimeters). Submit samples for each mix design or supplier. Determine coloring agent batch amounts by weight. The maximum amount of coloring agent is not to exceed 10 percent of the weight of the cement. Use coarse and fine aggregates and cement as delivered on the project at the job mix rates with variable quantities of coloring agent as directed by the CO.

Provide additional mixing time as recommended by the manufacturer. Give the test panels a Class 2 finish according to Subsection 552.16.

After the test panels have had at least 2 weeks exposure to sun, the CO will select a test panel to serve as a guide for the colored concrete. Use the same rate of coloring agent used in the selected panel on all relative subsequent work. Include the approved amount of coloring agent in the concrete mix design submittal.

Use an approved form release agent which will produce a minimum of staining, air holes, and hydration discoloration.

F-23 DIVISION 550

Project: MT FLAP BOR 2980(1), Sun River Bridge Replacement

(2) Brush on a mortar approved by the CO at a 1:1 cement/aggregate ratio. Add a coloring agent to provide integrally colored mortar according to Subsection 552.03.

(3) Brush on no more mortar than can be finished in 1 day;

(4) Rub the mortar with burlap or a piece of carpet as soon as it takes initial set (before it reaches final set);

(5) Fog-spray water over the finish as soon as the mortar has reached final set; and

(6) Keep the surface damp for at least 2 days.

If the mortar becomes too hard to rub as described in step (4), then rub the surface with a carborundum stone and water until form marks, projections, and irregularities are removed.

Random grinding is not permitted. Leave a uniform surface free from all unsound patches, paste, powder, and objectionable marks.

Continue with the Class 2 rubbed finish until the entire surface has a smooth texture and uniform color.

When steel forms have been used and the surface has a smooth, uniform texture and color including the surface of the filled holes, steps (1) through (6) above may be omitted with the approval of the CO.

Delete paragraph (f) and substitute the following:

(f) Class 6 – Color finish. Provide color-stained concrete finish for all concrete which will remain exposed including concrete down to 1 foot below finished ground. Provide concrete color after staining to match Standard Color Chart Number #10059 of Federal Specification 595B.

(1) Sample preparation. Prepare five square test panels, with each panel being 12 by 12 inches (300 by 300 millimeters). Allow the samples to age a minimum of 30 days.

Apply varying amounts of color stain to each sample to most closely approximate the required color.

The CO will select a test panel to serve as a guide for the concrete color/stain. Use the same mix and application of color/stain agent used in the selected panel on all relative subsequent work.

(2) Color/Stain finish. Remove all dust, foreign matter, form oil, grease, and curing compound with a 5 percent solution of trisodium phosphate and then rinse the concrete surface with clean water.

Use paper, cloth, or other means to protect surfaces not to be color finished. Apply the finish to a dry concrete surface when the surface temperature is 40 ºF or higher and the air temperature in the shade is anticipated to be 40 ºF or higher during the 24 hours following application.

F-23a

Project: MT FLAP BOR 2980(1), Sun River Bridge Replacement

Apply the color finish according to the manufacturer's recommendations. Spray, brush, or roll on the first coat of penetrating sealer and color base. Spray, brush, or roll on the finish coat after the first coat has thoroughly dried. Apply finish to provide a uniform, permanent color, free from runs and sags to the surfaces.

552.20 Acceptance. Add the following to Table 552-9 Note (2):

Transportation of specimens to laboratory may exceed time limits specified in AASHTO T 23.

F-27 DIVISION 550

Project: MT FLAP BOR 2980(1), Sun River Bridge Replacement

Section 585. — ULTRA HIGH PERFORMANCE CONCRETE

(ADDED SECTION)

04/03/20–FP14

Description

585.01 This work consists of providing, placing, finishing, and curing ultra-high performance concrete (UHPC) in field cast closures for precast components.

Material

585.02 Conform to the following Subsections:

Air-entraining admixture 711.02 Chemical admixtures 711.03 Concrete coloring agent 711.05 Curing material 711.01 Fine aggregate for concrete 703.01 Hydraulic cement 701.01 Structural concrete Stain 719.10 Pozzolans 725.04 Steel fiber reinforcement 725.19 Water 725.01

Construction Requirements

585.03 Qualifications.

At least 30 days before starting UHPC work, submit the following for approval:

(a) On-site technical representative. A résumé describing experience supervising on-site UHPC related activities including mixing, placement, and process control of the UHPC test section and UHPC production pours; and

(b) UHPC manufacturer. Documentation describing at least 3 years’ experience on UHPC projects of similar size and scope. Include project names, construction dates, locations, and contact information for the project owners.

585.04 Composition (Ultra-High Performance Concrete Mix Design). Submit written concrete mix design and test results at least 14 days before test section. Include the following:

(a) Material certifications;

(b) Mass of mixing water per cubic yard of concrete; and

F-28 DIVISION 550

Project: MT FLAP BOR 2980(1), Sun River Bridge Replacement

(c) Test results from within the last 12 months.

Produce UHPC mixtures that conform to Table 585-1 and are suitable for the application shown in the plans. Add a coloring agent to provide integrally colored UHPC or apply a concrete stain according to Subsection 552.16. Add enough agent to match the Standard Color Chart Number #10059 of Federal Specification 595B once concrete has cured.

For integral colored concrete Pprepare five square textured test panels with each panel being 12 by 12 inches (300 by 300 millimeters). Submit samples for each mix design or supplier. Determine coloring agent batch amounts by weight. The maximum amount of coloring agent is not to exceed 10 percent of the weight of the cement. Use coarse and fine aggregates and cement as delivered on the project at the job mix rates with variable quantities of coloring agent as directed by the CO.

Provide additional mixing time as recommended by the manufacturer. Give the test panels a Class 2 finish according to Subsection 552.16.

After the test panels have had at least 2 weeks exposure to sun, the CO will select a test panel to serve as a guide for the colored concrete. Use the same rate of coloring agent used in the selected panel on all relative subsequent work. Include the approved amount of coloring agent in the concrete mix design submittal.

Table 585-1 Properties of UHPC

Property Test Method Performance

Compressive strength ASTM C1856 ≥ 13,000 psi at 4 days

≥ 18,000 psi at 28 days

Effective cracking strength AASHTO T 397 ≥ 1100 psi

Peak tensile strength AASHTO T 397 ≥ 1250 psi

Direct tension bond strength ASTM C1583 100% failure in substrate concrete

Modulus of elasticity ASTM C1856 ≥ 6500 ksi

Long-term drying shrinkage ASTM C1856 ≥ 800 microstrains at 28 days

Chloride ion penetrability ASTM C1856 ≤ 250 coulombs

Abrasion resistance ASTM C1856 < 0.025 oz. lost

Freeze thaw resistance ASTM C1856 RDME > 95%

Flow(1) ASTM C1856 Between 7 to 10 in

ASR(2) ASTM C1567 ≤ 0.10 percent at 16 days after casting

(1) Flow property is only applicable to closure pour application.

(2) Performed on approved mix design mass percent combinations.

585.05 Placement Plan. At least 14 days before starting the test section, submit the following according to Subsection 104.03:

(a) Responsible personnel and hierarchy;

(b) Type, size, location, and number of equipment;

G-9a

Project: MT FLAP BOR 2980(1), Sun River Bridge Replacement

Section 719. — PAINT

08/01/14–FP14

719.10 Structural Concrete Stain. (Added Subsection):

Conform to the following:

(a) Provide a one-component, non-vapor barrier, solvent based acrylic resin.

(b) Solids by Weight 51 percent, plus or minus 2 percent.

(c) Solids by Volume 34 percent, plus or minus 2 percent.