W912EQ18B003.pdf

W912EQ-18-B-0003

CODE

(Hour)

PAGE(S)

until 01:00 PM local time 06 Mar 2018

X

A

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D

EX

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F 204 - 212 212 - 223

X H

TIJUANA.M.HARRIS@usace.army .mil

RATING PAGE OF PAGES

7. ISSUED BY

(Date)

IMPORTANT - Award will be made on this Form, or on Standard Form 26, or by other authorized official written notice.

Previous Edition is Unusable 33-134 STANDARD FORM 33 (REV. 9-97)

Prescribed by GSA

FAR (48 CFR) 53.214(c)

1 223

(If other than Item 7) W912EQ

15A. NAME 16. NAME AND TITLE OF PERSON AUTHORIZED TO

AND

ADDRESS

SIGN OFFER (Type or print)

OF

OFFEROR

AMENDMENT NO. DATE

15B. TELEPHONE NO (Include area code) 17. SIGNATURE15C. CHECK IF REMITTANCE ADDRESS

IS DIFFERENT FROM ABOVE - ENTER

SUCH ADDRESS IN SCHEDULE.

18. OFFER DATE

1. THIS CONTRACT IS A RATED ORDER

UNDER DPAS (15 CFR 700)

2. CONTRACT NO.

W912EQ 8. ADDRESS OFFER TO

9. Sealed offers in original and 2 copies for furnishing the supplies or services in the Schedule will be received at the place specified in Item 8, or if handcarried, in the depository located in

CAUTION - LATE Submissions, Modifications, and Withdrawals: See Section L, Provision No. 52.214-7 or 52.215-1. All offers are subject to all terms and

167 N. Main Rm 673 Mphs, TN conditions contained in this solicitation.

10. FOR INFORMATION

CALL:

A. NAME (NO COLLECT CALLS)

TIJUANA M. HARRIS 901-544-3048

11. TABLE OF CONTENTS

SOLICITATION/ CONTRACT FORM

SUPPLIES OR SERVICES AND PRICES/ COSTS

3 - 5

X I CONTRACT CLAUSES

DESCRIPTION/ SPECS./ WORK STATEMENT X

PACKAGING AND MARKING

5 - 31 J LIST OF ATTACHMENTS

INSPECTION AND ACCEPTANCE

DELIVERIES OR PERFORMANCE

31 - 36 36 - 40 X K

REPRESENTATIONS, CERTIFICATIONS AND

OTHER STATEMENTS OF OFFERORS

CONTRACT ADMINISTRATION DATA 40 - 41 X

SPECIAL CONTRACT REQUIREMENTS

OFFER (Must be fully completed by offeror) 41 - 68 M

L INSTRS., CONDS., AND NOTICES TO OFFERORS

EVALUATION FACTORS FOR AWARD

NOTE: Item 12 does not apply if the solicitation includes the provisions at 52.214-16, Minimum Bid Acceptance Period.

is inserted by the offeror) from the date for receipt of offers specified above, to furnish any or all items upon which prices are offered at the price set opposite each item, delivered at the designated point(s), within the time specified in the schedule.

13. DISCOUNT FOR PROMPT PAYMENT

(See Section I, Clause No. 52.232-8)

14. ACKNOWLEDGMENT OF AMENDMENTS

(The offeror acknowledges receipt of amendments

AMENDMENT NO. DATE

to the SOLICITATION for offerors and related documents numbered and dated):

FACILITY

12. In compliance with the above, the undersigned agrees, if this offer is accepted within calendar days (60 calendar days unless a different period

SOLICITATION, OFFER AND AWARD

X

(X) SEC. DESCRIPTION (X) SEC. DESCRIPTION PAGE(S)

PART I - THE SCHEDULE

26. NAME OF CONTRACTING OFFICER (Type or print) 27. UNITED STATES OF AMERICA 28. AWARD DATE

EMAIL:TEL: (Signature of Contracting Officer)

CODE CODE

B. TELEPHONE (Include area code) C. E-MAIL ADDRESS

AWARD (To be completed by Government)

19. ACCEPTED AS TO ITEMS NUMBERED 20. AMOUNT 21. ACCOUNTING AND APPROPRIATION

22. AUTHORITY FOR USING OTHER THAN FULL AND OPEN COMPETITION:

10 U.S.C. 2304(c)( ) 41 U.S.C. 253(c)( ) (4 copies unless otherwise specified)

23. SUBMIT INVOICES TO ADDRESS SHOWN IN ITEM

24. ADMINISTERED BY (If other than Item 7) CODE 25. PAYMENT WILL BE MADE BY CODE

PART IV - REPRESENTATIO NS AND INSTRUCTIO NS

PART III - LIST O F DO CUMENTS, EXHIBITS AND O THER ATTACHMENTS

68 - 162

PART II - CO NTRACT CLAUSES

US ARMY ENGINEER DISTRICT, MEMPHIS

TIJUANA M. HARRIS

167 N. MAIN ST.

MEMPHIS TN 38103-1894

ADDRESS SAME AS BLOCK 7.

HAND DELIVERED BIDS RECEIVED IN

RM 681, CLIFFORD DAVIS FEDERAL BUILDING, 167

MEMPHIS TN 38103-1894901-544-3048

901-544-3710FAX:

TEL:

FAX:

TEL:

NOTE: In sealed bid solicitations "offer" and "offeror" mean "bid" and "bidder".

SOLICITATION

163 - 203

6. REQUISITION/PURCHASE NO.5. DATE ISSUED

02 Feb 2018

4. TYPE OF SOLICITATION

SEALED BID (IFB)

NEGOTIATED (RFP)

[ X ]

3. SOLICITATION NO.

W912EQ18B0003

Section A - Solicitation/Contract Form

MAIN TABLE OF CONTENTS

ARTICULATED CASTING CONCRETE MATTRESS

RICHARDSON LANDING, TN MAT CASTING FIELD

MAIN TABLE OF CONTENTS

SECTION NUMBER SECTION TITLE PAGE #

SECTION A COVER SHEET

SECTION B SUPPLIES OR SERVICES AND PRICES

SECTION C BID SCHEDULE

NOTICE TO BIDDERS

DESCRIPTIONS/SPECIFICATIONS

SECTION E INSPECTION AND ACCEPTANCE

SECTION F DELIVERIES AND PERFORMANCE

DELIVERY INFORMATION

SECTION G CONTRACT ADMINISTRATION DATA

SECTION H SPECIAL CONTRACT REQUIREMENTS

SECTION I CONTRACT CLAUSES

SECTION J LIST OF DOCUMENTS, EXHIBITS AND OTHER

ATTACHMENTS

SECTION K REPRESENTATIONS, CERTIFICATIONS,

AND OTHER STATEMENTS OF OFFERORS

SECTION L INSTRUCTIONS AND CONDITIONS 212 - 223

SECTION M

EVALUATION FACTORS FOR AWARD 223

3 - 5

5 - 31

31 - 36

41 - 68

36 - 40

40 - 41

68 - 162 163 - 203

204 - 212

Section B - Supplies or Services and Prices

BID SCHEDULE

ARTICULATED CONCRETE MATTRESS AT

RICHARDSON LANDING, TN MAT CASTING FIELD

1.1 LINE ITEMS

This contract will be awarded as one lump sum with unit prices required for specifically selected work. A schedule of the unit price work is contained in Standard Form SF 33, "Solicitation, Offer and Award."

ITEM DESCRIPTION Estimated Unit

Quantity Unit Price Amount

0001AA Articulated Concrete Mattress 106,470 SQ $ $

(exclusive of Portland Cement, Fly Ash, and Synthetic Fiber), using Portland cement, fly ash,synthetic fiber, and water-

0001AB

reduction admixture

Portland Cement

260,000 CWT $ $

0001AC Fly Ash 47,250 CF $ $

0001AD Synthetic Fiber 267,347 LB $ $

0001AE Environmental Protection 1 LS XXX.XX $

Total Items 0001AA thru 0001AE $________

OPTION

1001AA

A

Articulated Concrete Mattress 11,830 SQ $ $

(exclusive of Portland Cement, Fly Ash, and Synthetic Fiber), using Portland cement, fly ash, synthetic fiber, and water-

1001AB

reduction admixture

Portland Cement 29,000 CWT $ $

1001AC Fly Ash 5,250 CF $ $

1001AD

Total

Synthetic Fiber

Option Items 1001AA thru 1001AD

29,990 LB $ $

1.2 NOTES

NOTE 1: Bidders shall furnish unit prices for all items listed on the schedule of bid items, which require unit prices. If the bidder fails to insert a unit price in the appropriate blank for required items, but does furnish an extended total or an estimated amount for such items, the Government will deem his unit price to be the quotient obtained by dividing the extended estimated amount for that line item by the quantity. IF THE BIDDER OMITS BOTH THE UNIT PRICE AND THE EXTENDED

ESTIMATED AMOUNT FOR ANY ITEM, THE BID WILL BE DECLARED NONRESPONSIVE.

Any bid price for items indicated above which are unbalanced as to price may be rejected as non-responsive. An unbalanced bid is one which is based on price significantly less than cost for some work and price which is significantly overstated for other work.

Award will be made as a whole to one bidder.

AC = Acre CF = Cubic Feet CY = Cubic Yard

DH = Miles EA = Each FC = 1000 Cubic Feet

FT = Foot HF = 100 Feet HH = 100 Cubic Feet

HL = 100 Linear Feet HR = Hours HS = 100 Square

Feet HY = 100 Yards LB = Pound LF = Linear Foot

LH = Labor Hour LS = Lump Sum LY = Linear

Yard MO = Months SB = Square Mile SF = Square

Foot

SQ = Square SY = Square Yard TL = 1000 Linear Feet

UN = Unit YD = Yard YL = 100 Linear

Yards YM = Cubic Yards per Mile CWT = 100 Pounds

All quantities are estimated except where unit is given as "LS" or "EA".

NOTE 2: If a bid or modification to a bid based on unit prices is submitted and provides for a lump sum adjustment to the total estimated cost, the application of the lump sum adjustment to each unit price, including lump sum units, in bid schedule must be stated, or, if it is not stated, the bidder agrees that the lump sum adjustment shall be applied on a pro rata basis to every unit price in the bid schedule.

NOTE 3: The end item being procured under this solicitation is completed squares of articulated concrete mattress. Ingredients such as Portland Cement, Fly Ash, Synthetic Fiber, and etc. are not end items.

NOTE 4: Cement and Fly Ash quantities are based on historical usage, and will be used to evaluate bids. Actual amounts will depend on the various mix designs furnished by the Government during the contract performance period. Fly Ash may vary from 0 to 25 percent of total cementitious materials by volume.

Under the Comprehensive Procurement Guidelines (CPG) program, the

Environmental Protection Agency (EPA) designates products that are or can be made with recovered materials, and recommends practices for buying these products. Any designated product that is being offered or supplied under this contract shall meet the minimum recommended content levels as identified under the CPG program. Visit http://www.epa.gov/epawaste/conserve/tools/cpg/products for a complete list of designated products and the associated recommended content levels.

Offerors must be able to demonstrate that each offered product meets minimum content levels upon request.

http://www.epa.gov/epawaste/conserve/tools/cpg/products

NOTE 5: Synthetic Fiber quantities are based on a loading rate of 3 LB per CY of concrete, and will be used to evaluate bids. Actual amounts will depend on the various mix designs furnished by the Government during the contract performance period.

Section C - Descriptions and Specifications

DESCRIPTION/SPECIFICATIONS

PART 1 GENERAL

1.1 SCOPE

The work to be performed under this contract consists of furnishing all plant, materials (except materials specified herein to be furnished by the

Government), equipment, supplies, labor, transportation, including fuel, power, water, and performing all work as required in casting squares of articulated concrete mattress at the location and in the quantity shown below, in strict accordance with the specifications, schedules and drawings, all of which are made a part thereof, and including such detail drawings as may be furnished by the Contracting Officer during the prosecution of the work. The Government may exercise an option to increase the basic and option quantity not to exceed 15 percent.

a. Definition of a "Square": The definition of a "square" of articulated concrete mattress as referred to in these specifications consists of one section, approximately 25 feet x 4 feet x 3 inch, containing 16 blocks, cast on a single unit of wire mesh.

b. Location: The casting field is located at Richardson Landing, Tennessee, which is along the left descending bank of the

Mississippi River (Mile 769 AHP).

1.2 REFERENCES

The publications listed below form a part of this section to the extent referenced:

ASTM INTERNATIONAL (ASTM)

ASTM C33/C33M (2016) Standard Specification for Concrete

Aggregates

ASTM C94/C94M (2017) Standard Specification for

Ready-Mixed Concrete

ASTM C1116/C1116M (2010a) Standard Specification for

Fiber-Reinforced Concrete

ASTM C143/C143M (2015) Standard Test Method for Slump of

Hydraulic-Cement Concrete

ASTM C150/C150M (2017) Standard Specification for Portland

Cement

ASTM C172/C172M (2014a) Standard Practice for Sampling

Freshly Mixed Concrete

ASTM C231/C231M (2017) Standard Test Method for Air

Content of Freshly Mixed Concrete by the

Pressure Method

ASTM C260/C260M (2010a; R 2016) Standard Specification for

Air-Entraining Admixtures for Concrete

ASTM C494/C494M (2016) Standard Specification for Chemical

Admixtures for Concrete

ASTM C618 (2012a) Standard Specification for Coal

Fly Ash and Raw or Calcined Natural

Pozzolan for Use in Concrete

ASTM D75/D75M (2014) Standard Practice for Sampling

Aggregates

ASTM D7508/D7508M (2010) Standard Specification for

Polyolefin Chopped Strands for Use in

Concrete

ASTM D98 (2015) Calcium Chloride

U.S. GENERAL SERVICES ADMINISTRATION (GSA)

CID A-A-203 (Rev C; Notice 3) Paper, Kraft, Untreated

U.S. NATIONAL ARCHIVES AND RECORDS ADMINISTRATION (NARA)

40 CFR 261 Identification and Listing of Hazardous

Waste

40 CFR 279 Standards for the Management of Used Oil

U.S. ARMY CORPS OF ENGINEERS (USACE)

COE CRD-C 55 (1992) Test Method for Within-Batch

Uniformity of Freshly Mixed Concrete

COE CRD-C 119 (1991) Flat and Elongated Particles in

Coarse Aggregate

COE CRD-C 143 (1962) Specifications for Meters for

Automatic Indication of Moisture in Fine

Aggregate

COE CRD-C 300 (1990) Specifications for Membrane-Forming

Compounds for Curing Concrete

COE CRD-C 400 (1963) Requirements for Water for Use in

Mixing or Curing Concrete

NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY (NIST)

NIST HB 44 (2016) Specifications, Tolerances, and

Other Technical Requirements for Weighing and Measuring Devices

U.S. ENVIRONMENTAL PROTECTION AGENCY (EPA)

EPA SW-846.3-3 (1999, Third Edition, Update III-A) Test

Methods for Evaluating Solid Waste:

Physical/Chemical Methods

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. The following shall be submitted in accordance with SECTION J EXHIBIT 3 - SUBMITTAL PROCEDURES:

SD-01 Pre-Work Submittals

Activity Hazard Analysis

Accident Prevention Program

Stone Source

Proposed Plan for furnishing the Roughened Finish

Name, Mailing address, and Physical Location of the Analytical

Laboratory

SD-04 Samples

Split Samples for Government Analysis

SD-06 Test Reports

Results of Quantitative Analyses of the Proposed Release Agent

SD-07 Certificates

Calcium Chloride Manufacturer's Mill Certificate; G

Curing Compound Certificates of Compliance

Paper Mill Certificates

Form Release Agent Certification

1.4 MEASUREMENT AND PAYMENT: LUMP SUM PAYMENT ITEMS

Payment items for the work of this contract for which contract lump sum payments will be made are listed in the BID SCHEDULE and described below.

All costs for items of work, which are not specifically mentioned to be included in a particular lump sum or unit price payment item, shall be included in the listed lump sum item most closely associated with the work involved. The lump sum price and payment made for each item listed shall constitute full compensation for furnishing all plant, labor, materials, and equipment, and performing any associated Contractor quality control, meeting safety requirements, tests and reports, and for performing all work required for which separate payment is not otherwise provided.

1.4.1 Environmental Protection

a. Measurement

No measurement will be made for Environmental Protection.

b. Payment

Payment will be made for costs associated with operations necessary for environmental protection as specified in 01 57 20.00 11 -

ENVIRONMENTAL PROTECTION. This price and payment shall be considered full compensation for furnishing all plant, labor, materials, and equipment and for performing all operations necessary for

"Environmental Protection." This price and payment does not include those items covered under "Storm Water Pollution Prevention";

however, it does include items incidental thereto. The

Contractor shall be responsible for payment of fees associated with environmental permits, application, and/or notices obtained by the

Contractor. The Contractor shall be responsible for payment of all fines/fees for violation or non-compliance with Federal, State, Regional and local laws and regulations.

c. Unit of measure, Lump Sum: LS

1.5 MEASUREMENT AND PAYMENT: UNIT PRICE PAYMENT ITEMS

Payment items for the work of this contract for which unit price payments will be made are listed in the BID SCHEDULE and described below. The unit price and payment made for each item listed shall constitute full compensation for furnishing all plant, labor, materials, and equipment, and performing any associated Contractor quality control, meeting safety requirements, tests and reports, and for performing all related work required for which separate payment is not otherwise provided.

1.5.1 Articulated Concrete Mattress

a. Measurement for Articulated Concrete Mattress shall be made per square. All materials entering into the concrete shall be mechanically batched and measured by weight except the admixtures which may be batched by volume, and except water which may be batched by weight or volume. One gallon of water will be considered as 8.33 pounds in weight.

b. Payment for Articulated Concrete Mattress as specified in this section will be made at the contract unit price per square for

Articulated Concrete Mattress, which price and payment shall constitute full compensation for all operations, labor, (including roughening mattress), materials and the adjustment of wire mesh entering into the completed mattress except (1) those furnished by the Government and listed herein as free issue, (2) all Portland cement entering into the work for which separate payment is provided for, (3) all fly ash entering into the work for which separate payment is otherwise provided, and (4) all synthetic fiber entering into the work for which separate payment is otherwise provided. The contract unit price per square shall include all costs involved in the addition of air-entraining admixture, the addition of a water-reducing admixture, the addition of calcium chloride, if used, relocating old and new forms and the addition and placement of chairs to support the wire mesh, if required. The quantity to be paid for Articulated Concrete Mattress will be squares of articulated mattress cast in accordance with these specifications and accepted by the Contracting Officer.

c. Unit of measure: Square: SQ.

1.5.2 Portland Cement

a. Measurement for Portland Cement shall be made per 100 pounds.

b. Payment for Portland Cement as specified in this section will be made at the contract unit price per 100 pounds, which price and payment shall include the cost of the cement and all incidental costs such as unloading, handling, hauling, mixing, and storage at the site. The quantity of cement to be paid for under Portland Cement will be computed by multiplying the number of squares of accepted mattress by the net volume of concrete contained in the form line of a square (0.837 cu yd) and by multiplying this product by the theoretical cement content of the Government-furnished mix design in use during that portion of casting. Any cement used in excess of the

Government mix design shall be at no additional expense to the

Government.

c. Unit of measure: 100 Pounds: CWT.

1.5.3 Fly Ash

a. Measurement for Fly Ash shall be made per cubic foot.

b. Payment for Fly Ash as specified in this section will be made at the contract unit price per cubic foot, which price and payment shall include the cost of the fly ash and all other incidental costs thereto, to include unloading, handling, hauling, mixing, and storage at the site. The quantity of Fly Ash to be paid for will be computed by multiplying the number of squares of accepted mattress by the net volume of concrete contained within the form line of a square (0.837 cu yd) and by multiplying this product by the theoretical fly ash content (cubic feet solid volume) in the designed concrete mixture and for each increment of change therein.

c. Unit of measure: cubic feet: CF.

1.5.4 Synthetic Fiber

a. Measurement for Synthetic Fiber shall be made per pound.

b. Payment for Synthetic Fiber as specified in this section will be made at the contract unit price per pound, which price and payment shall include the cost of the synthetic fiber and all other incidental costs thereto, to include unloading, handling, hauling, mixing, and storage at the site. The quantity of Synthetic Fiber to be paid for will be computed by multiplying the number of squares of accepted mattress by the net volume of concrete contained within the form line of a square (0.837 cu yd) and by multiplying this product by the theoretical synthetic fiber content (pound by weight) in the designed concrete mixture and for each increment of change therein.

c. Unit of measure: pound: LB.

1.6 MEASUREMENT AND PAYMENT: PROGRESS PAYMENTS

a. Payments will be made on partial deliveries at monthly intervals.

However, if upon the determination of the Contracting Officer the amount due on deliveries warrants it, payments may be made at more frequent intervals. In the preparation of payment estimates, the

Contracting Officer may authorize material delivered on the site to be taken into consideration, if the Contractor furnishes satisfactory evidence that he has paid for such material.

b. All material and work covered by progress payments made shall, at the time of payment, become the sole property of the Government, but this shall not be construed as:

(1) Relieving the Contractor from the sole responsibility for all material and work upon which payments have been made or the restoration of any damaged work; or

(2) Waiving the right of the Government to require the fulfillment of all of the terms of the contract.

c. In making these progress payments, the Government shall, upon request, reimburse the Contractor for the amount of premiums paid for performance and payment bonds (including coinsurance and reinsurance agreements, when applicable) after the Contractor has furnished evidence of full payment to the surety.

d. In making these progress payments, the Government may adjust payment due to unacceptable performance in accordance with Section F

- DELIVERIES AND PERFORMANCE, paragraph COMMENCEMENT, PROSECUTION AND

COMPLETION.

1.7 PHYSICAL DATA

1.7.1 Access Roads

State Highway 59 leads west to the casting field from Covington, Tennessee.

1.7.2 Railroads

There is a railroad siding, if needed, in Covington, Tennessee.

1.7.3 Rivers

The casting field is accessible via the Mississippi River.

1.7.4 Electricity

Electric power service is located at the casting field, and electricity may be procured commercially at the Contractor's expense. The

Contractor shall make his own arrangements for power.

1.7.5 Water

Water may be procured commercially at the Contractor's expense, or it may be obtained from the Mississippi River provided it meets the requirements for water as set out in these specifications. The

Contractor shall make his own arrangements for water.

1.8 OTHER WORK

The Government may desire to load completed mattress sections or perform other work on the Government premises or in the immediate vicinity either by Government personnel or contract while the Contractor's casting operations are in progress. The Contractor's plant layout or order of work shall be such as to avoid interference with loading operations, storage and transportation of materials, storage of existing mattress, casting of additional mattress, or other work not included in this contract.

1.9 CONTRACT DRAWINGS AND SPECIFICATIONS

Three sets of contract drawings and specifications will be furnished the

Contractor without charge except applicable publications incorporated in the specifications by reference. Additional sets will be furnished on request at the cost of reproduction. The work shall conform to the standard drawings listed below, all of which form a part of these specifications and are available in the office of the U.S. Army Engineer

District, Memphis, Corps of Engineers.

Serial No.

22060

Title

Articulated Concrete Mattress

File No.

74/211.1

Typical Layout and Standard

Details

21770 Locality Map

Mattress Casting Field

76/371.1

Richardson Landing, TN

19250 Richardson Landing, TN 73/878.5

Casting Field

Form Layout

21881 Steel Forms for 74/210

16 Block

Articulated Concrete Mattress

Richardson Landing, TN

Casting Field

SWPPP Site Map

1.10 FIELD LAYOUT

The initial casting field layout shall be as shown on Drawing entitled

"Richardson Landing, TN; Casting Field; Form Layout". After work is underway, the casting field layout and/or order of work may be altered to avoid obstructing or being obstructed by the mat loading operation.

Mattress stacks and rows of standard mattress shall be developed from these layouts in a manner similar to that shown on the Drawing entitled

"Articulated Concrete Mattress; Typical Layout and Standard Details".

PART 2 PRODUCTS

2.1 CEMENTITIOUS MATERIALS

2.1.1 Portland Cement

Portland Cement shall conform to ASTM C150/C150M, Type I, including false set requirements, except that the maximum amount of Tricalcium Aluminate shall be 15 percent.

2.1.2 Fly Ash

Fly ash shall conform to ASTM C618, Class C or F, including the maximum alkalies, uniformity and multiple factor requirements. The loss on ignition for fly ash shall be limited to a maximum of 6 percent.

2.1.3 Transportation of Bulk Cement and Fly Ash

When bulk cement and/or fly ash is not unloaded from primary carriers directly into weathertight hoppers at the batching plant, transportation from the railhead, mill, or intermediate storage area to the batching plant shall be accomplished in weathertight trucks, conveyors, or other means which will protect the cement and fly ash completely from exposure to moisture.

2.1.4 Storage

Separate storage facilities shall be provided for cement and fly ash.

Immediately upon receipt at the site of the work, cement and fly ash shall be stored in a dry weathertight and properly ventilated structure with adequate provisions for the prevention of absorption of moisture.

Charging valves for storage of cement and fly ash shall be clearly marked to prevent inadvertent loading of the wrong material into this structure.

All storage facilities shall be subject to approval and shall permit easy access for inspection and identification. In order that cement and fly ash not become unduly aged after delivery, the Contractor shall use any cement or fly ash which has been stored at the site for 60 days or more before using cement or fly ash of lesser age. Fly ash or cement obtained from different sources shall not be stored in the same storage bin. The temperature of the cement and fly ash, as delivered to the site, shall not exceed 150 degrees F.

2.1.5 Quality Control and Quality Assurance

The Contractor shall notify the Contracting Officer of the source from which the cement and fly ash will be obtained within 10 days after award of the contract. Cement and fly ash will be accepted on the basis of a manufacturer's mill certificate of compliance. Unless otherwise authorized, no cement or fly ash shall be used until a satisfactory manufacturer's mill certificate for that cement or fly ash is in the possession of the Contracting Officer at the site of the work and same has been accepted. If the manufacturer's certificate indicates that the cement or fly ash which has been delivered is unsatisfactory, it shall be promptly removed from the site of the work by and at the expense of the

Contractor. Fly ash and cement samples will be tested periodically during the casting season, at the Government's expense, to check compliance with the specifications. Cement and/or fly ash which has not been used within

4 months after testing shall be retested at the expense of the Contractor when directed by the Contracting Officer and will be rejected if test results are not satisfactory.

2.2 CALCIUM CHLORIDE

Calcium chloride shall meet the requirements of ASTM D98, Type S, Grade 1, 2 or 3.

2.2.1 Quality Control and Quality Assurance

Calcium chloride will be accepted on the basis of a calcium chloride manufacturer's mill certificate or certificate of compliance, furnished in duplicate, to the Contracting Officer at the time of delivery.

2.3 AIR-ENTRAINING ADMIXTURE

The air-entraining admixture shall conform to ASTM C260/C260M and shall consistently entrain the air content in the specified ranges under field conditions. The air-entraining admixture shall be in a solution of suitable viscosity for field use requiring no further dilution.

2.3.1 Quality Control and Quality Assurance

which the admixture will be obtained within 10 days after award of contract. The admixture will be accepted on the basis of mill certificates or certificates of compliance which certify that the admixture meets the specified requirements. The admixture may be tested periodically, at the expense of the Government, to check compliance with the specifications. The Contractor shall provide satisfactory facilities for the procurement of test samples by the Contracting Officer. An air entraining admixture which has been in storage at the project site for longer than 6 months or which has been subjected to freezing shall be retested at the expense of the Contractor when directed by the Contracting

Officer and shall be rejected if test results are not satisfactory.

2.4 WATER-REDUCING ADMIXTURE

The water-reducing admixture shall conform to the requirements of

ASTM C494/C494M, Type A. The purpose of the admixture is to reduce the quantity of water otherwise required in a similar mixture without this admixture to produce concrete of a given consistency and reduce the cement required by approximately 10 percent of the quantity which would be required without this admixture. Adjustments to the amount and or type of water-reducer used may be needed to aid in the placement and the workability of the concrete due to the addition of synthetic fibers.

2.4.1 Quality Control and Quality Assurance

which the admixture will be obtained within 10 days after award of the contract. The admixture will be accepted on the basis of mill certificates or certificates of compliance which certify that the admixture meets the specified requirements. The admixture will be tested periodically, at the expense of the Government, to check compliance with the specifications. The Contractor shall provide satisfactory facilities for the procurement of test samples by the Contracting Officer. A water-reducing admixture which has been in storage at the project site for longer than 6 months or which has been subjected to freezing shall be retested at the expense of the Contractor prior to its use and shall be rejected if tests results are not satisfactory.

2.5 AGGREGATE

2.5.1 Composition

Fine aggregate shall consist of natural sand, or a combination of natural and manufactured sands. Coarse aggregate shall consist of gravel, crushed gravel, crushed stone, or a combination thereof. All aggregates used in concrete for casting mats shall be obtained from an approved source as defined in paragraph "Stone Sources" in Section H.

2.5.2 Quality

Aggregate, as delivered to the mixer, shall consist of clean, hard, and uncoated particles. Where required, fines shall be removed from the coarse aggregates by adequate washing, or another suitable method approved by the Contracting Officer. The quantity of flat and/or elongated particles in the separated size groups of coarse aggregates, as defined and determined by COE CRD-C 119, shall not exceed 25 percent. The quality of the aggregates shall conform to ASTM C33/C33M, Class 4M.

2.5.3 Quality Assurance

The Contractor shall notify the Contracting Officer of the sources from which the aggregates will be obtained within 10 days after award of contract. The aggregates will be accepted on the basis of certificates of compliance which certify that the aggregates meet the specified requirements. During construction, aggregate will be sampled in accordance with ASTM D75/D75M, as delivered to the mixer, to determine compliance with the specifications. The Contractor shall provide facilities and labor as may be necessary for the ready procurement of representative test samples. Samples from the weigh batcher shall be obtained when directed by the Contracting Officer and under his supervision. The Government will test such samples at its expense using appropriate Corps of

Engineers' and ASTM testing methods. Tests of aggregates at various stages in the casting process and handling operations will be made at the discretion of the Contracting Officer.

2.5.4 Fine Aggregate

Fine aggregate shall be graded from fine to coarse and the gradation shall be within the following limits as delivered to the mixer or as incorporated in the mixed concrete:

Sieve Size Percent Passing

3/8 inch 100

No. 4 95 - 100 No. 16 45 - 90

No. 50 7 - 30

No. 100 0 - 7

No. 200 0 - 3

Storage of Fine Aggregate: The toe of the fine aggregate stockpile shall never be closer than 60 feet to top bank of the river or to top bank of

Sugar Creek. The height of the stockpile shall never exceed 50 feet. When the height of the stockpile is 40 feet or less, the toe of the stockpile shall not be closer than 60 feet to top bank of the river or top bank of

Sugar Creek. When the height of the stockpile is 50 feet, the toe of the stockpile shall not be closer than 80 feet to top bank of the river or closer than 60 feet to top bank of Sugar Creek. When the height of the stockpile is between 40 and 50 feet, interpolation shall be used to determine the distance from top bank. For example, if the height of the stockpile is 45 feet high, the toe of the stockpile shall not be closer than 70 feet to top bank of the river and not be closer than 60 feet to top bank of Sugar Creek.

Fine aggregate shall be stored in such a manner as to avoid the inclusion of any foreign materials. The storage piles shall be constructed so as to prevent segregation. The storage of the material in storage piles and its removal therefrom shall be accomplished in such a manner as to result in maintaining uniformity of gradation. All fine aggregate shall remain in the stockpile for at least 96 hours prior to use. Sufficient aggregate shall be maintained at the site at all times to permit continuous placement of concrete at the specified rate. Any unacceptable material that is introduced to the stockpile shall be promptly separated from previously accepted material and removed from the stockpiled area before continuation of casting or within 24 hours if occurring during a period of no casting.

2.5.5 Coarse Aggregate

Coarse aggregate shall conform to the following gradation requirements as delivered to the mixer or as incorporated in the mixed concrete:

Sieve Size Percent Passing

1-1/2 inch 100

1 inch 90 - 100

1/2 inch 25 - 60 No. 4 0 - 10

No. 8 0 - 5

No. 200 0 - 1

Storage of Coarse Aggregates: The toe of the coarse aggregate stockpile shall never be closer than 60 feet to top bank of the river or to top bank of Sugar Creek. The height of the stockpile shall never exceed 50 feet.

When the height of the stockpile is 40 feet or less, the toe of the stockpile shall not be closer than 60 feet to top bank of the river or top bank of Sugar Creek. When the height of the stockpile is 50 feet, the toe of the stockpile shall not be closer than 80 feet to top bank of the river or closer than 60 feet to top bank of Sugar Creek. When the height of the stockpile is between 40 and 50 feet, interpolation shall be used to determine the distance from top bank. For example, if the height of the stockpile is 45 feet high, the toe of the stockpile shall not be closer than 70 feet to top bank of the river and not be closer than 60 feet to top bank of Sugar Creek.

Coarse aggregate storage piles shall be built adjacent to the batch plant and in such manner as to avoid the inclusion of any foreign material. Coarse aggregate shall remain in the stockpile for at least 48 hours prior to use. The storage piles shall be constructed so as to prevent segregation and to provide for drainage away from the storage piles. The disposition of the material in storage and its removal therefrom shall be accomplished in such a manner as to result in maintaining the uniformity of the gradation. Sufficient aggregate shall be maintained at the site at all times to permit continuous placement of concrete at the specified rate. Any unacceptable material that is introduced to the stockpile shall be promptly separated from previously accepted material and removed from the stockpiled area before continuation of casting or within 24 hours if occurring during a period of no casting.

2.6 WATER

Water for mixing shall be clean and potable, except that nonpotable water may be used if it meets the requirements of COE CRD-C 400. Water for curing shall not contain any substance that is injurious to the concrete.

2.7 CURING COMPOUNDS

Curing compounds shall be of the surface membrane type, shall be pigmented, and shall comply with the requirements of COE CRD-C 300.

2.7.1 Quality Control and Quality Assurance

The Contractor shall furnish curing compound certificates of compliance, at or before the time of delivery, in duplicate, to the Contracting

Officer which certify that the curing compound meets the specified requirements.

2.8 SYNTHETIC FIBER

Synthetic Fiber shall conform to ASTM C1116/C1116M, Type III containing polypropylene fibers and ASTM D7508/D7508M. More specifically, these fibers shall follow requirements in Table 1, under the column "Macro

Chopped Strands" within ASTM D7508/D7508M. Adjustments to the amount and or type of water-reducer used may be needed to aid in the placement and the workability of the concrete due to the addition of synthetic fibers.

2.8.1 Quality Control and Quality Assurance

which the Synthetic Fiber will be obtained within 10 days after award of the contract. The synthetic fiber will be accepted on the basis of certificates of compliance which certify that the synthetic fiber meets the specified requirements. The synthetic fiber will be tested periodically, at the expense of the Government, to check compliance with the specifications. The Contractor shall provide satisfactory facilities for the procurement of test samples by the Contracting Officer. A synthetic fiber which has been in storage at the project site for longer than 6 months shall be retested at the expense of the Contractor prior to its use and shall be rejected if tests results are not satisfactory.

Storage of the synthetic fiber shall be done so in a manner that will protect the product from the surrounding environment including but not limited to direct sunlight, rain, snow, wind and freezing conditions.

2.9 KRAFT PAPER

The paper used as separators between mattress squares shall be not less than 48 inches wide and not greater than 50 inches in width and shall conform to the maximum requirements set out in CID A-A-203 (Rev C), Style

1, with the exception of the requirements specified herein. The paper basis weight shall be not less than 99 pounds; that is, 500 sheets, 24 by

36 inches shall weigh not less than 99 pounds. The Contractor may, at his option and at no additional cost to the Government, elect to use a heavier weight paper that meets or exceeds the requirements of the Commercial Item

Description.

2.9.1 Quality Control and Quality Assurance

The Contractor shall either furnish paper mill certificates or certificates of compliance, in duplicate, at or before the time of delivery, to the Contracting Officer which certify that the paper meets the specified requirements.

PART 3 EXECUTION

3.1 PLANT REQUIREMENTS

3.1.1 Weight Batchers

The weight batchers shall be arranged to permit the convenient addition or removal of material. The weight batchers shall be so constructed and arranged that the sequence and timing of batcher discharge gates can be controlled to produce a ribboning and mixing of the aggregates, water, and of the cement and fly ash with aggregates as the materials pass through the charging hopper into the mixer. The plant shall include provisions to facilitate the inspection of all operations at all times. Delivery of materials from the batching equipment shall be within the following limits of accuracy:

Material Percent

Cement and Fly Ash plus or minus 1

Water plus or minus 1

Aggregate plus or minus 2

Admixtures plus or minus 3

3.1.2 Scales

The batch plant shall include adequate facilities for the accurate measurement and control of each of the materials entering each batch of concrete. The accuracy of weighing equipment shall conform to the applicable requirements of NIST HB 44, except that the accuracy shall be within 0.2 percent of scale capacity. The Contractor shall provide standard test weights and any other auxiliary equipment required for checking the operating performance of each scale or other measuring device. Periodic tests shall be made in the presence of a Contracting

Officer in such a manner and at such intervals as may be directed. Upon completion of each check test and before further use of the indicating, recording, or control devices, the Contractor shall make such adjustments, repairs or replacement as may be required for satisfactory performance.

Each weighing unit shall include a visible springless dial or electronic indicator which shall indicate the scale load at all stages of the weighing operation or shall include a beam scale with a beam balance indicator which will show the scale in balance at zero load at any beam setting. The indicator shall have an over and under travel equal to at least 5 percent of the capacity of the beam. The weighing equipment shall be arranged so that the concrete plant operator can conveniently observe the dials or indicators.

3.1.3 Interlocks

Batchers and mixers shall be interlocked so that:

a. The charging mechanism of each batcher cannot be opened until the scale has returned to zero,

b. The charging mechanism cannot be opened if the discharge mechanism is opened,

c. The discharge mechanism cannot be opened if the charging mechanism is open,

d. The discharge mechanism cannot be opened until the designated weight has been reached within the allowable tolerance,

e. One admixture is batched automatically with the water,

f. Each additional admixture is batched automatically with a separate portion of the water or with the fine aggregate, and

g. The mixers cannot be discharged until the required mixing time has elapsed.

3.1.4 Moisture Control Meter

The plant shall be capable of ready adjustment to compensate for the varying moisture content of the aggregate in order to change the weights of the materials being batched. An electric moisture meter, complying with the provisions of COE CRD-C 143, shall be provided for measurement of moisture in the fine and coarse aggregates. The sensing element shall be arranged so that the measurement is made near the batcher charging gate of the aggregate bin or in the aggregate batcher.

3.1.5 Recorder

An accurate recorder shall be provided and shall conform to the following requirements:

a. The recording units shall be completely housed in a single cabinet which shall be capable of being locked.

b. The recorder shall produce a graphical or digital record on a single visible chart or tape which shall indicate the weight or volume of each material in the batchers at the conclusion of the batching cycle. The record shall be produced prior to the delivery of the materials to the mixer. After the batchers have been discharged, the recorder shall indicate the return of the batcher to the empty condition.

c. The chart or tape shall be so marked that each batch may be permanently identified and so that variations in batch weights of each type of batch can be readily observed.

d. The chart or tape shall show the date and time of day at intervals of not more than 15 minutes. Gradation lines on the cementitious materials chart shall be at intervals of not more than

20 pounds.

e. The recorded chart or tape shall become the property of the Government.

f. The recorder shall be placed in a position convenient for observation by the concrete plant operator and the Contracting

Officer, and mounted to prevent excessive vibration which causes inaccurate readings.

g. The recorded weights or volumes, when compared to the weights or volumes actually batched, shall be within plus or minus 2 percent.

3.1.6 Batch Counters

The plant shall include devices for automatically counting the total number of batches of all concrete batched.

3.1.7 Admixture Dispensers

An accurate mechanical system for measuring and dispensing each admixture shall be provided. Each system shall be capable of ready adjustment to permit varying the quantity of admixtures to be batched. Each admixture shall be added to the batch in a separate portion of the mixing water or in a separate portion of the fine aggregate in a manner to ensure uniform distribution of the admixtures throughout the batch. The dispensing systems shall provide a convenient means of visually observing from the control panel the admixture in process of being batched or discharged.

3.1.8 Sampling

The Contractor shall provide suitable facilities and labor for obtaining representative samples of concrete from the mixer or the wet batch hopper for Contractor quality control and Government quality assurance testing.

All necessary platforms, tools, and equipment for obtaining samples shall be furnished by the Contractor.

3.1.9 Control Equipment Protection.

The indicating, recording, and control equipment shall be sufficiently protected against exposure to dust, moisture and vibration so there will be no interference with proper operation of the equipment.

3.2 CONCRETE MIXERS

3.2.1 General

Mixers may be stationary mixers, truck mixers, paving mixers, or turbine-type mixers of approved design. The mixers shall have a rated capacity of at least 27 cu. ft. of mixed concrete and shall not be charged in excess of the capacity recommended by the manufacturer.

Mixers shall be capable of combining the materials into a uniform mixture and of discharging this mixture without segregation. Each stationary and paving mixer shall be provided with an acceptable device to lock the discharge mechanism until the required mixing time has elapsed. Truck mixers shall be equipped with accurate revolution counters. The mixers shall be operated at the drum or blade speed designated by the manufacturer on the nameplate. The acceptability of truck mixers will be determined by uniformity tests as required by

ASTM C94/C94M. The mixing periods specified herein are predicated on proper control of the speed of rotation of the mixer drum or mixing blades and on proper introduction of the materials into the mixer. The mixing time of stationary or paving mixtures shall be increased when such increase is necessary to secure the required uniformity of the concrete or when test samples of concrete taken from the first, middle and last portions of the mixer discharge is less than any of the following requirements when tested in accordance with the provisions of COE CRD-C 55. When authorized by the Contracting Officer, the mixing time may be reduced to the minimum time required to meet all the following requirements.

Maximum Allowable

Variation of Any One

Test Value from the

Test Average of Three

Weight per cubic foot of mortars calculated to an air-free basis, lb/ft3 plus or minus 1.6

Air content, volume percent of plus or minus 1.0 concrete

Slump, inches plus or minus 1.0

Coarse aggregate content, portion by weight of each sample retained on No. 4 sieve, percent plus or minus 6.0

Average compressive strength at

7 days, percent plus or minus 10.0

Water content, portion by weight of each sample passing No. 4 sieve, percent plus or minus 1.5

When the Contractor proposes to reduce the mixing time, uniformity tests at reduced mixing time will be made by the Government, at the Contractor's expense, to determine whether the reduced mixing time meets the requirements of the specifications. Excessive over-mixing requiring additions of water will not be permitted. The mixers shall be maintained in satisfactory operating condition, and mixer drums shall be kept free of hardened concrete. Mixer blades shall be replaced when worn more than 10 percent of their initial depth. Should any mixer at any time produce unsatisfactory results, its use shall be promptly discontinued until it is repaired. Suitable facilities shall be provided for obtaining representative samples of concrete for uniformity tests. All necessary platforms, tools, labor and equipment for obtaining samples shall be furnished by the Contractor.

3.2.2 Stationary Mixers

If no uniformity test data are available, the mixing time for each batch after all solid materials are in the mixer shall be one minute for mixers having a capacity of one cubic yard, provided that all of the mixing water is introduced before one-fourth of the mixing time has elapsed. For mixers of larger capacities, the minimum mixing time shall be increased 15 seconds for each additional cubic yard or fraction thereof of concrete mixed. When a stationary mixer is used for partial mixing of the concrete

(shrink-mixing), the mixing time in the stationary mixer may be reduced to the minimum necessary to intermingle the ingredients (about 30 seconds).

3.2.3 Truck Mixers

Truck mixers and the mixing of concrete therein shall conform to the requirements of ASTM C94/C94M. A truck mixer may be used either for complete mixing (transit-mixed) or to finish the partial mixing accomplished in a stationary mixer (shrink-mixed). Each truck shall be equipped with two counters from which can be determined the number of revolutions at mixing speed and the number of revolutions at agitating speed.

3.2.4 Paving Mixers

Paving mixers, if used, shall be used at the site' of the work. Paving mixers may be either single compartment drum or multiple compartment drum type. Multiple compartment drum paving mixers shall be properly synchronized and the mixing time shall be determined by including the time required to transfer the concrete between compartments of the drum.

If no uniformity test data are available, the mixing time for each batch, after all solid materials are in the mixer drum shall be one minute for mixers having a capacity of one cubic yard, provided that all the mixing water is introduced before one-fourth of the mixing time has elapsed. For mixers of larger capacities, the minimum mixing time shall be increased

15 seconds for each additional cubic yard or fraction thereof of concrete mixed. Vehicles used in transporting material from the batching plant to the mixers shall have bodies or compartments of adequate capacity to carry the materials and to deliver each batch, separate and intact, to the mixer. Except as otherwise approved by the Contracting Officer, loose cement and fly ash shall be transported from the batching plant to the mixers in separate boxes or compartments which shall be equipped with windproof and rainproof covers.

3.3 ARTICULATED CONCRETE MATTRESS

3.3.1 Scope

The work covered by this section consists of furnishing all materials and equipment except as provided in the section entitled, "SPECIAL CONTRACT

REQUIREMENTS", paragraph GOVERNMENT-FURNISHED FACILITIES and paragraph

IDENTIFICATION OF GOVERNMENT-FURNISHED PROPERTY, and performing all labor for the manufacturing,…