10-B-0015-0003.pdf

W68SBV02115404

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

TITLE: Low er Monumental Navlock Monolith 15 Wall Repair Phase 2

The purpose of this amendment is to make changes to the Technical Specif ications as listed in the Summary of Changes.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 2

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

16C. DATE SIGNED

BY 14-Oct-2010

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 W912EF-10-B-0015

X 9B. DATED (SEE ITEM 11)

17-Sep-2010

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

14-Oct-2010

CODE

USAED, WALLA WALLA - CONTRACTING DIV.

PHYLLIS L. BUERSTATTE

201 N. THIRD AVENUE

WALLA WALLA WA 99362-1876

W912EF 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912EF-10-B-0015

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

The following has been added by full text:

AMENDMENT 0003

1. Bid opening remains unchanged at 19 October 2010, 2:00pm, local time.

2. Bidders must acknowledge receipt of this amendment. See Block Number 11 of Standard Form 30 for methods of acknowledging solicitation amendments.

3. The following changes are made to the technical specifications:

Technical Specification 03 64 00.00 28, Subsection 2.1.2: This is a new section.

Crack Dimensions for Quantity of Material Determination

The following dimensions shall be used for estimating crack length, depth, and width. Vertical crack:

355 inches long (vertical), 36-inch fill depth (into the monolith), 1/8-inch average crack width.

Horizontal crack: 60 ft or 720 inches long (horizontal), 36-inch fill depth (into monolith), 1-inch average crack width.

(End of Summary of Changes)

Lower Monumental Navlock Monolith 15 Wall Repair - Phase 2 W912EF-10-B-0015 amendment 0003

SECTION TABLE OF CONTENTS

DIVISION 03 - CONCRETE

SECTION 03 64 00.00 28

CRACK INJECTION

PART 1 GENERAL

1.1 SUMMARY

1.2 REFERENCES

1.3 SUBMITTALS

1.4 QUALIFICATIONS

1.4.1 Contractor Qualifications

1.4.2 Worker Qualifications

1.5 DELIVERY, STORAGE, AND HANDLING

1.5.1 Packing, Shipping, Handling, and Unloading

1.5.2 Polymer Materials

1.6 PROJECT/SITE CONDITIONS

1.6.1 Environmental Requirements

1.7 QUALITY ASSURANCE

1.7.1 Work Plan

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 Polymer Materials

2.1.1.1 Polyurethane Injection Adhesive

2.1.2 Crack Dimensions for Quantity of Material Determination

2.2 EQUIPMENT

PART 3 EXECUTION

3.1 CRACK REPAIR

3.1.1 Injection Grouting Cracks

3.1.1.1 Preparation

3.1.1.1.1 Mixing

3.1.1.2 Injection

-- End of Section Table of Contents --

SECTION 03 64 00.00 28 Page 1

SECTION 03 64 00.00 28

CRACK INJECTION

PART 1 GENERAL

1.1 SUMMARY

This specification covers the injection of the horizontal and vertical cracks in Monolith 15 with a hydropohobic polyurethane.

1.2 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to in the text by basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM C 273/C 273M (2007a) Shear Properties of Sandwich Core Materials

ASTM D 1623 (2009) Tensile and Tensile Adhesion Properties of Rigid Cellular Plastics

1.3 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. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Work Plan; G GT

Contractor Qualifications

Worker Qualifications

SD-03 Product Data

Polyurethane Injection Adhesive

1.4 QUALIFICATIONS

The submittals shall, where applicable, identify individuals who will be working on this contract and their relevant experience. Do not make changes in approved personnel without prior approval of the Contracting Officer.

1.4.1 Contractor Qualifications

The Contractor performing the repair work shall have been involved in a minimum of three concrete repair projects similar in size and scope to this

SECTION 03 64 00.00 28 Page 2 project in the last five years. Submit information, including name, dollar value, date, and point-of-contact for similar projects which demonstrates the required experience and/or training.

1.4.2 Worker Qualifications

Each worker engaged in the use of specialized application equipment, including polyurethane injection process, shall have satisfactorily completed an instruction program in the operation of the equipment. The instruction program for workers engaged in the use of grout injection equipment shall have included theory on the nature and causes of cracking in concrete, methods for permanently repairing damaged structural members, the technical aspects of correct material selection and use, and the operation, maintenance, and troubleshooting of equipment used in the repair work. Each worker engaged in the operation of specialized equipment for the contract work shall have a minimum of three years of experience in the operation of the equipment.

1.5 DELIVERY, STORAGE, AND HANDLING

1.5.1 Packing, Shipping, Handling, and Unloading

Inspect materials delivered to site for damage, unload and store with a minimum of handling. Deliver materials in original, sealed containers with manufacturer's name, labels, product identification, and batch numbers.

1.5.2 Polymer Materials

Storage areas shall be in a windowless and weatherproof, but ventilated, insulated noncombustible building. Store polymer materials at temperatures between 40 degrees F to 85 degrees F. Do not allow polymer materials to freeze. Store as recommended by manufacturer in accordance with aforementioned requirements.

1.6 PROJECT/SITE CONDITIONS

1.6.1 Environmental Requirements

Placement restrictions shall be in accordance with the manufacturer's published literature. Appropriate protection of the work area shall be provided when conducting work during weather conditions potentially detrimental to the quality of the work. The work area shall be protected, at a minimum, from rain and snow.

1.7 QUALITY ASSURANCE

Perform all work in accordance with EM 385-1-1. To protect personnel from overexposure to toxic materials, conform to the applicable manufacturer's Material Safety Data Sheets (MSDS) or local regulation. Submit the MSDS for polyurethanes and other potentially hazardous materials.

1.7.1 Work Plan

Prepare a work plan describing the repair materials to be used with specific information on products and/or constituents, and requirements for handling, storage, etc., equipment to be used, surface preparation, and requirements for placement, finishing, curing and protection specific to the materials used. The manufacturer's recommendations shall be included.

SECTION 03 64 00.00 28 Page 3

The work plan shall include a description of field demonstrations. The plan shall also address ways to determine if the injected grout is getting into the culverts and ways to prevent this from occuring. Do not commence work until the work plan is approved.

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 Polymer Materials

2.1.1.1 Polyurethane Injection Adhesive

Two part system composed of polyurethane resin and water. Polyurethane resin shall be 100% HYDROPHOBIC resin, capable of forming a flexible closed-cell foam when mixed with water. Product shall be SikaFix HH LV or equal. When mixed with water, the resin shall meet the following requirements.

Performance Criteria Properties of the Cured Polyurethane Injection Grout

Property Test Method Criteria

Tensile Strength ASTM D 1623 20 psi (minimum) Elongation ASTM D 1623 250% (minimum) Bond to Concrete (wet) ASTM C 273/C 273M 20 psi (minimum)

2.1.2 Crack Dimensions for Quantity of Material Determination

The following dimensions shall be used for estimating crack length, depth, and width. Vertical crack: 355 inches long (vertical), 36-inch fill depth (into the monolith), 1/8-inch average crack width. Horizontal crack: 60 ft or 720 inches long (horizontal), 36-inch fill depth (into monolith), 1-inch average crack width.

2.2 EQUIPMENT

Assemble at the site of the work sufficient equipment that is dependable, appropriate and adequate to accomplish the work specified. Deliver the equipment a sufficient time before the start of repairs to permit thorough inspection, calibration of weighing and measuring devices, adjustment of parts, and the making of any repairs that may be required. Machines, tools, and equipment used in the performance of the work shall be approved before the work is started and shall be maintained in satisfactory condition at all times. Maintain the equipment in good working condition.

PART 3 EXECUTION

3.1 CRACK REPAIR

3.1.1 Injection Grouting Cracks

3.1.1.1 Preparation

Clean each crack of dust, dirt, loose concrete and unsound material by vacuuming or flushing with water and allowing to drain to remove free water in the crack. Seal the surface of the crack with a crack surface sealer recommended by the manufacturer. Then drill injection holes along the side

SECTION 03 64 00.00 28 Page 4

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Line of the crack at a 45 degree angle to intercept the crack at a depth of 1.5 feet. Injection holes shall be located and drilled as recommended by the polyurethane resin manufacturer. Insert the injection ports, at a minimum, at both ends of each crack, at the junction of two cracks, and along the length of each crack at intervals as recommended by the manufacturer, not to exceed 16 inches.

3.1.1.1.1 Mixing

Polyurethane resin shall be mixed according to the manufacturer's directions. The Contractor shall prevent the introduction of water to the grout during the mixing procedure. The Contractor shall take appropriate measures to protect existing surfaces from the polyurethane resin.

3.1.1.2 Injection

After crack surface sealer has hardened and cured, pump polyurethane injection adhesive into valve at one end of crack. For vertical surfaces start at lowest valve and work upwards. As crack sealer appears at next valve, pinch pumping valve closed and move to next valve and commence pumping. Continue procedure until other end of crack is reached. Avoid delays in pumping operation. After crack sealer has hardened and cured grind valves off flush with concrete surface. Coat areas of valves with crack surface sealer and allow to harden and cure. Placement procedure shall be in accordance with manufacturer's recommendations.

-- End of Section --

SECTION 03 64 00.00 28 Page 5

2.1.2 Crack Dimensions for Quantity of Material Determination

2.2 EQUIPMENT

3.1.1.2 Injection