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READ AND REMOVE THIS PAGE BEFORE PLACING
THE SPECIFICATION SECTION IN THE CONTRACT

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DIVISION 3:  CONCRETE

SECTION 03310 ‑ STRUCTURAL CONCRETE

USE:	Furnishing and placing concrete, reinforcing steel, and framework for construction projects.  It is limited to grades 40 or 60 reinforcing bars, and type A or B concrete, 27 600 kPa or 20 700 kPa respectively (4,000 psi or 3,000 psi respectively).  This section is a complete concrete section in itself and is not intended to be used with other "Concrete" sections. 

NOTES TO SPECIFIER:

A.	Options within paragraphs are identified by enclosure in brackets; blank spaces enclosed by brackets [      ] provide for information to be inserted, as appropriate to individual projects.

B.	TO AVOID CONFLICTING REQUIREMENTS AND COSTLY MISTAKES, the specifier must edit (delete, substitute or add to the text).  The remaining paragraphs must be renumbered.

C.	DELETE FOR FINAL COPY: Notes to the Specifier, located between lines of asterisks; all [brackets], underlining, boldface, and italics within the paragraphs; and this page.  (Open Reveal Codes [alt F3] to do this accurately).

D.	To Edit “(Footer B)”: (Corel 8).  ENTIRE FOOTER SHOULD BE BOLDED.  Click in the footer and delete the “Project Name (ftr B)” text and replace it with the Name Of The Project (upper/lower case).  Replace date with current MM/YY (WITHOUT BRACKETS). 

E.	The Guide Specifications are intended to be continuously reviewed and revised.  User’s technical comments are appreciated.  Also, other related or similar specifications that are written “from scratch” that could benefit others, or other questions can be sent to NSTC A/E Group, ST-110 or call (303) 987-6851.

F.	DESIGN NOTES:

1.	DRAWING DATA REQUIRED:

A.	Indicate rebar size, placement, and spacing within the concrete on the drawings.

B.	Indicate concrete outlines and dimensions on the drawings.

REVISIONS OF THIS SECTION:
CSI format, editorial changes 9/99
Metric: 10/99
Technical Update: 12/99

SECTION 03310

STRUCTURAL CONCRETE

PART 1:  GENERAL

1.1	SUMMARY

A.	Section Includes:  Furnishing and placing cast-in-place concrete, including reinforcing steel, formwork, [waterstops,] [and] [gravel subbase]. 

B.	Related Sections

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LIST ITEMS OF WORK THAT MIGHT LOGICALLY BE FURNISHED AND INSTALLED UNDER THIS SECTION, BUT INSTEAD ARE SPECIFIED IN ANOTHER SECTION.  THIS ARTICLE IS RARELY REQUIRED.
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1.2	SUBMITTALS

A.	Requirements:  Submittals shall be according to [Section 01009 ‑ General Information and Requirements.]  [Section 01330 ‑ Submittal Procedures.]  [and] [Section 01331 ‑ Certificates.]

B.	Manufacturer's Literature:  Submit for approval five copies of the manufacturer's descriptive data for the admixtures to be used on this project.  Include the brand name, description, mix of concrete, (including other admixture), purpose for which used and location in which this concrete shall be placed.

C.	Shop Drawings:  Submit for approval five copies of shop drawings for the reinforcement to be used on this project.  Shop drawings shall show the lengths, bends, and splices. 

D.	Mix Design:  Submit for approval five copies of the design mix and strength test results for each strength, class and type of concrete to be used on this project using material the Contractor proposes to use on the project.  Mix designs and strength test results shall be prepared by a certified testing laboratory.

E.	Mill Test Reports:  Submit three copies for each shipment of Portland cement and reinforcement to be used on this project.

F.	Certificates of Conformance:  Submit three copies of the batch certificates for each load of ready‑mix delivered to the jobsite, certifying that the batch conforms to the requirements of this specification.

1.4	QUALITY ASSURANCE

A.	Causes for Rejection:  Concrete may be rejected for, but not limited to, the following reasons:
1.	Inadequate strength after 28 calendar days as indicated by test cylinders.  The Contractor shall be responsible for further testing required by the Government to determine the strength of the concrete.
2.	Freezing within first 3 calendar days of placement.
3.	Segregation of aggregate or over‑vibration resulting in excessive water in the surface of the concrete or lack of water in vertical surfaces.
4.	Honeycomb over 25 percent of the surface.
5.	Voids larger than 2-inches (50 mm) across.
6.	Exposed reinforcing steel.
7.	Misalignment of concrete.
8.	Substandard aggregate in the mix.
9.	Failure to cover or seal concrete during initial 7‑day curing period.
10.	Improper placement of cut-offs, blockouts, anchor bolts, or other imbedded items.
11.	Irregular, cracked, crazed, or spalled concrete surfaces.
12.	Stained or discolored surfaces.

PART 2:  PRODUCTS

2.1	MATERIALS

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SELECT TYPE OF CEMENT USED; INDICATE LOCATIONS OF BOTH TYPES ON DRAWINGS WHEN MORE THAN ONE TYPE IS USED.  AVAILABLE CEMENT TYPES ARE:

Type I		normal
Type IA		normal, air entraining
Type II		moderate sulfate resistance
Type IIA		moderate sulfate resistance, air-entraining
Type III		high early strength
Type IIIA	high early strength, air entraining
Type IV 		low heat of hydration
Type V		high sulfate resistance
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A.	Cement:  ASTM C 150, portland cement, Type [    ].  The use of caked or hardened cement will not be permitted.

B.	Water:  AASHTO T 26.  Water shall be clean and free from harmful amounts of acids, alkalis, and organic materials.  Potable water is acceptable without testing.

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VERIFY THAT LARGEST AGGREGATE SIZE WILL EASILY FIT BETWEEN REINFORCING AND ALLOW SMALLER AGGREGATE AND CEMENT PASTE TO CONSOLIDATE BETWEEN REBAR WITHOUT CAUSING WEDGING.  IF THE STATE DOT MIX IS READILY AVAILABLE AND WILL MEET THE REQUIREMENTS, MODIFY THE BELOW GRADATION REQUIREMENTS ACCORDINGLY TO REDUCE POSSIBLE COST OF A SPECIAL MIX DESIGN.
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C.	Aggregates
1.	Course:  ASTM C 33, hard, durable, uncoated [crushed] stone or gravel. Course aggregate for concrete having an exterior surface exposed, except floor slabs shall meet the following gradation:
95 to 100 percent shall pass a 1‑1/2 inch (37.5 mm) sieve;
35 to 79 percent shall pass a 3/4-inch (19 mm) sieve;
10 to 30 percent shall pass a 3/8-inch (9.5 mm) sieve and not over 5 percent shall pass a No. 4 sieve.  Percentages are by weight.
2.	Fine:  ASTM C 33 clean, hard, durable, uncoated sand grains, free from silt, loam and clay [with a fineness modulus of not less than 2.5 nor more than 3.0.] and shall meet the following gradation:
95 to 100 percent by weight passing No. 4 sieve;
45 to 70 percent passing No. 16 sieve;
15 to 30 percent passing No. 50 sieve;
 	3 to  8 percent passing No. 100 sieve.
3.	For cement topping finish, use([    ]-inch ([    ]-mm) minimum and [    ]-inch ([    ]-mm) maximum size aggregate.
4.	The maximum size aggregate in floor slabs shall be [3/4] inch ([20] mm).

D.	Reinforcing Steel:  Shall have a yield point of [60] [40] KSI ([414] [276] MPa) and shall be ASTM A 615, grade [60] [40].

E.	Welded Wire Fabric:  ASTM A 185, electrically cold‑drawn wire of the gauge and mesh size shown on the drawings. 

F.	Reinforcement Supports:  Shall be of the size and type required.

G.	Isolation Joint Material:  ASTM D 994.  Preformed filler strips shall be the full width and depth of slab or joint.  Unless otherwise indicated, the material shall be l/2-inch (13 mm) thick.  Joint Sealer:  ASTM D 1190.

H.	Adhesive for Sealing Joints:  Mastic‑type.

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CLASS A CURING COMPOUND IS WAX BASED.  TYPE I IS CLEAR OR TRANSLUCENT WITHOUT DYE; TYPE 1-D IS CLEAR OR TRANSLUCENT WITH FUGITIVE DYE; TYPE B IS WHITE PIGMENTED.
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I.	Membrane Curing Compound:  ASTM C 309, Type [1][1D] Class [A][B], [chlorinated rubber‑based], [100 percent resin‑based].  

J.	Moist Curing Material 
	1.	Mats:  ASTM C 171.
2.	Burlap:  AASHTO M 182. 
3.	Sand:  ASTM C 144.

K.	Impervious Sheet Covering:  Shall be one of the following: 
1.	Polyethylene sheeting shall be 4‑mil (0.1 mm) minimum thickness, black.
2.	Polyethylene‑coated kraftpaper.
3.	Waterproof paper:  ASTM C 171.

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INDICATE ON THE DRAWINGS THE AREAS REQUIRING DUST PREVENTIVE ADMIXTURES.  INDICATE THE TYPE AND QUANTITY OF ADMIXTURE REQUIRED.
INDICATE ON THE DRAWINGS THE AREAS REQUIRING SURFACE HARDENER OR SEALERS.  INDICATE THE TYPE OF HARDENER REQUIRED.
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L.	Admixtures:  Other than specified herein, or by reference, admixtures may be used only when approved in writing by the Contracting Officer.  When used, comply with the manufacturer's written instructions.
1.	Air content by volume:  ACI 211.1, paragraph 6.3.3, plus or minus 1 percent.  Air entrainment additives:  ASTM C 260.
2.	Calcium chloride shall be used when specified or approved by the Contracting Officer.  Do not use near galvanized materials.
3.	Water reducing or retarding chemical admixtures:  ASTM C 494.  Used only when specified in the mix design or approved by the Contracting Officer.
4.	Pozzolanic or fly‑ash admixtures:  ASTM C 618 and ASTM C 311.
5.	Dust preventative agents: Fluorosilicate solutions, 2 pounds (1 kg) ) of magnesium fluorosilicate per 1 gallon (4 liters) of water, or 2 pounds (1 kg) of zinc fluorosilicate-crystalline salts per 1 gallon (4 liters) of water, shall be used when approved in writing by the Contracting Officer.
6.	Surface hardener:  Natural aggregate or iron‑bearing dry‑shake material for concrete surface improving and hardening, manufactured for this purpose, containing quartz, trap‑rock, emery, or granite, and approved in writing by the Contracting Officer.

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INDICATE ON THE DRAWINGS THE AREAS REQUIRING VAPOR BARRIER. 
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M.	Vapor Barriers:  Polyethylene sheeting, 6 mil (1.5 mm) thickness.

N.	Control Joints:  Nonstaining wood, plastic, or metal formed to be removed without spalling concrete.

O.	Waterstops:  [ASTM D 570, D 624, D 638, D 746, D 747, D 792, D 1149, D 1203, and D 2240] [polyvinyl chloride (PVC)] [ASTM D 2628, rubber of the type shown on the drawings].

P.	Epoxy Bonding Material:  ACI 503.1 for hardened concrete or ACI 503.2 for plastic concrete.

Q.	Forming Material
1.	Formwork for exposed concrete surfaces shall be plywood, metal‑framed plywood‑faced, or other panel-type materials to provide continuous, straight, smooth, as‑cast surfaces.  Furnish formwork in largest practicable lengths to minimize the number of joints.  Form material shall be of sufficient stiffness to withstand pressure of newly placed concrete without bowing or deflection.  Plywood shall conform to the requirements of PS 1.
2.	Concrete surfaces which will be unexposed in the finished structure may be formed with plywood, lumber, metal, or other materials acceptable to the Contracting Officer.  Provide lumber that is dressed on at least two edges and one side for tight fit.

R.	Anchor Bolts and Embedded Steel:  Section 05120 - Structural Steel.

2.2	MIXES

A.	Concrete Design Mix:  Design the mix to provide concrete, including specified admixtures and cement, with the following properties using material the Contractor proposes to use on the project:
1.	Type A Concrete shall be [27 600] kPa ([4,000] psi), 28‑day compressive strength. The water‑cement ratio shall not exceed     5 gallons (19 liters) per sack of cement, inclusive of water in the aggregate.  The proportions of aggregate to cement shall produce concrete with a slump of 2 to 4 inches (5 to 10 mm) according to ASTM C 143.
    2.	Type B Concrete shall be [20 700] kPa ([3,000] psi), 28‑day compressive strength. The water‑cement ratio shall not exceed     6 gallons (23 liters) per sack of cement, inclusive of water in the aggregate.  The proportions of aggregate to cement shall produce concrete with a slump of 2 to 4 inches (50 to 100 mm) according to ASTM C 143.
3.	Air content shall be 4 to 6 percent at the point of placement .
4.	Ready‑mixed concrete that meets the above specifications will be permitted when approved in writing by the Contracting Officer.  The Contracting Officer will have access to the mixing plant during concrete mixing operations.

2.3	SOURCE QUALITY CONTROL

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DETERMINE WHETHER THE GOVERNMENT OR THE CONTRACTOR IS GOING TO PERFORM THE REQUIRED TESTING AND EDIT ACCORDINGLY.  INDICATE HOW MANY CYLINDER TESTS WILL BE REQUIRED OF THE DESIGN MIX.
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A.	Testing:  [The Government will perform the required air content tests, compression tests of 3 cylinders and slump tests to substantiate mix designs.  Results will be recorded and distributed.]  [The Government will make arrangements for a certified, independent testing laboratory to perform the air content, compression tests of [3] cylinders and slump tests to substantiate mix designs.  Results will be recorded and distributed.]  [Perform the air content tests, compression tests of [3] cylinders, and slump tests to substantiate mix designs.]  [Furnish necessary equipment, labor, and materials to conduct the testing.]  [Testing shall be conducted in the presence of the Contracting Officer who shall be given 48-hours notice before any test is to be conducted.]  [Make arrangements for a certified, independent testing laboratory, according to the requirements of Section 01458 - Testing Laboratory Services, to perform the air content tests, compression tests of [3] cylinders, and slump tests to substantiate mix designs. Record and distribute the results.]

PART 3:  EXECUTION

3.1	PREPARATION

A.	Clearing and Grubbing:  Section 02231 - Clearing and Grubbing.

B.	Aggregate Subbase:  Shall be placed under the slab, as shown on the drawings, prior to erecting formwork, according to Section 02322 ‑ Excavation and Fill for Structures.

C.	Form Construction:  ACI 347, Chapters 1 through 4.  Construct to the exact sizes, shapes, lines, and dimensions shown, and as required to obtain accurate alignment, location, grades, level, and plumb work in finished structures.  Provide required detail work, construction aids, and embedded items.  Use selected materials to obtain required finishes.  Fabricate forms for removal without hammering or prying against concrete surfaces.  Provide crush plates or wrecking plates if stripping may damage cast-concrete surfaces.  Provide kerfed-wood inserts for forming keyways, reglets, and recesses to prevent swelling and assure ease of removal.  Form oil may be applied to facilitate removal of the forms.

D.	Form Inspection:  Notify the Contracting Officer 24 hours in advance of concrete placement to allow for inspection of the formwork and placement of items to be placed in the concrete.  Excess water shall be removed from the forms before concrete placement.

E.	Bonding to Existing Material:  Surfaces required to be bonded to the concrete shall be prepared for bonding adhesive according to the manufacturer's instructions.

F.	Construction Joints:  Shall be made with beveled keyways at locations as approved by the Contracting Officer [or as indicated on the drawings].  Reinforcing steel shall be continuous through joints.

G.	Reinforcing Steel:  Shall be held securely in position by steel wire or metal chairs during the placement of concrete.  Reinforcing steel shall be clean of dirt, grease, and rust prior to placement of concrete.

H.	Waterstops:  Shall be carefully placed and supported at the locations shown on the drawings.  Splices shall be avoided to the maximum extent possible, and splices shall be made in accordance with the manufacturer's written instructions.  Take precautions so that waterstops are not displaced or damaged by construction operations.  Keep waterstop surfaces free of oil, grease, dried mortar, or other foreign matter while the waterstops are being embedded in concrete; portions of the waterstops designed for embedment in concrete shall be tightly enclosed in dense concrete.

I.	Vapor Barrier:  Shall be installed as shown on the drawings; lap seams 6-inches (150 mm).

J.	Anchor Bolts and Embedded Steel:  Shall be placed with a template.

K.	Concrete Mixing:  ACI 304.
1.	Mix materials for concrete in a drum‑type batch machine mixer.  For mixers of 1 cubic yard (meter) or smaller capacity, mix concrete for a minimum of 1‑1/2 minutes but not more than 5 minutes after ingredients are in the mixer before the batch is released.  For mixers with a capacity larger than 1 cubic yard (meter) increase the minimum mixing time by 15 seconds for each additional cubic yard (meter) or portion thereof.
2.	When using ready‑mixed concrete, comply with the requirements of ASTM C 94 and as herein specified.  During hot weather or under conditions contributing to rapid setting of concrete, a shorter mixing time than is specified in ASTM C 94 may be required.  When air temperature is between 85 and 90 degrees F, reduce the mixing and delivery time from 90 to 75 minutes.  When air temperature is above 90 degrees F, reduce the mixing and delivery time to 60 min.

L.	Admixtures that have been approved in writing by the Contracting Officer may be used to aid in setting times when pouring during hot or cold weather conditions.

3.2	CONCRETE PLACEMENT

A. 	Placement and Consolidation
1.	When concrete cannot be placed within the time frame specified above, do not place it, but remove it from the jobsite.
2.	Concrete shall be placed only in the presence of the Contracting Officer who shall be notified 24 hours in advance of each intended concrete placement.  Concrete shall be placed in maximum lifts of [18] inches ([450] mm), and shall be well-vibrated, rodded, or spaded into place to fill voids and angles to ensure smooth surfaces and dense concrete.  Concrete shall be deposited at its final position, and shall not be  allowed to flow in a manner that will cause segregation of the materials.  Concrete must not be dropped more than [5] feet ([1500] mm) vertically without use of a tremie or similar device.

B.	Bonding to Existing Concrete:  When a bond is desired between fresh concrete and concrete which has set, the surface of the concrete already in place shall be thoroughly cleaned of loose material, laitance, dirt, and other foreign material, and the old concrete shall be soaked with water.  When no bond is desired between the old concrete and the new, the surface of the old concrete that will come in contact with the fresh concrete shall be painted with an asphaltum or other suitable material to prevent bonding.

C.	Hot Weather Concreting:  ACI 305R.

D.	Cold Weather Concreting:  ACI 306R.  Materials needed for protection shall be on the jobsite before concrete work is started.  Do not place concrete on a frozen subgrade or against surfaces having deposits of frost, snow, or ice.

3.3	CONCRETE FINISHING

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INDICATE THE TYPE OF FINISH REQUIRED HERE OR ON THE DRAWINGS.
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A.	Concrete Surface Finishes
1.	The top surface of walls and interior slabs shall be given a [wood-float] finish after screeding.  [Concrete shall be finished as indicated on the drawings.]
2.	Finish exterior slabs with a broomed finish unless otherwise indicated on the drawings.  After floating and troweling and after the water sheen has disappeared, brush lightly with an approved steel, fiber, or horsehair broom not less than 450 mm (18 inches) wide.  Brush to form a uniform roughened surface at right angles to the centerline.  Edge joints and panel edges with a metal tool to leave a smooth border around each panel.
3.	Apply a sealer and hardener to the floor according to the manufacturer's instructions. 
4.	Finish interior slabs according to ACI 301, paragraph 11.7.3.  The finished floor surface shall have a smooth architectural-type finish with no irregularities, cracking, crazing, or spalling.

B.	Form Removal:  Formwork not supporting concrete, may be removed after curing at not less than 50 degrees F for 24 hours after placing concrete, and when curing and protection procedures are followed as specified.  The concrete shall be sufficiently hard so as not to be damaged by form removal.  Formwork and false work supporting live or dead loads of concrete (such as slabs and other structural elements) shall not be removed for a minimum of 14 days, and after the 14 days, not until concrete has attained the design minimum 28-day compressive strength as indicated by test cylinders.

C.	Concrete Finish Patching:  Immediately after the removal of the forms, remove bulges and projections on exposed concrete by chipping or tooling, and rub or grind the surface.  Chip honeycombed or other defective areas to solid concrete; cut edges to right angles with the surface.  Brush cavities with a grout of cement and water, and point with a mortar of cement, sand, and water similar to that used in the concrete.  Keep the concrete thoroughly saturated with water during the finishing.

D.	Joint Sealing:  Use compressed air to blow dirt and dust from joints to be sealed.  When joints are dry and dust‑free, apply sealant in the joints according to the manufacturer's instructions.  The finished joints shall have no depressions or protrusions and continuous seals shall be formed along the joints.

3.4	CONCRETE CURING

A.	Curing Time:  Cure concrete for a period of 7 calendar days from time of placement by using one of the following methods:
1.	The liquid membrane-forming compound shall be sprayed on and shall be dry to the touch in not more than 4 hours from time of application, according to Paragraph 7.1, ASTM C 309.  This method of curing shall not be used where additional concrete, mortar, or joint sealant will be placed against the cured concrete.
2.	Cover the damp concrete surfaces with impermeable sheets of polyethylene material or other sheet coverings with joints lapped a minimum of 6-inches (150 mm) and sealed to keep moisture in.
3.	Concrete forms may be left in place to provide proper curing of concrete in contact with the forms.  Curing of unformed concrete surfaces shall be by one of the methods shown above, and shall begin as soon as the concrete is hard enough to allow application of the curing material.  If forms are removed before the end of the 7-day period, curing by use of the liquid membrane-forming compound or sheets of polyethylene material shall begin immediately, and shall continue for the remainder of the 7-day curing period.
3.5	FIELD QUALITY CONTROL

A.	Testing:  [The Government will perform the compression and slump tests, record, and distribute the results.]  [The Government will make arrangements for a certified, independent testing laboratory to perform the required compression and slump testing, record and distribute the results.]  [Perform the compression and slump tests.]   [Furnish necessary equipment, labor, and materials to conduct the testing.]  [Testing shall be conducted in the presence of the Contracting Officer who shall be given 48-hours notice before tests are to be conducted.]  [The Contractor shall make arrangements for a certified, independent testing laboratory, according to the requirements of Section 01458 - Testing Laboratory Services, to perform the compression and slump testing, recording, and distributing of the results.]

B.	Air Content Test:  ASTM C 231.  A minimum of one air content test shall be performed prior to each pour of concrete.

C.	Compression Tests:  A minimum of one set of test cylinders (each set shall consist of six cylinders) shall be provided each day concrete is placed.  An additional set of test cylinders shall be provided on days the pour exceeds [15] cubic yards ([11] cubic meters).  The test cylinders shall be made and cured according to ASTM C 31.  Twenty‑four hours after taking cylinders, they shall be carefully transported to the testing laboratory for moisture curing.  Expense of original sets of tests will be borne by the [Government.]   [Contractor.]  The concrete placement locations represented by the test cylinders shall be noted on record drawings.  Test cylinders shall be identified with symbols to indicate the location where the concrete was obtained for the test.  Two cylinders are to be tested to failure at 7 days and two at 28 days, according to ASTM C 39.  Other cylinders shall be kept for testing in case the 28‑day test falls below required strength.

D.	Slump Test:  ASTM C 143.  A minimum of one slump test shall be performed for each pour of concrete.  

3.6	PROTECTION

A.	Requirements:  Concrete shall be protected from mechanical and chemical damage resulting from construction activities.  Floor slabs shall be protected from impact and wheel traffic as well as staining resulting from oils, solvents, chemicals, and paints.

PART 4:  MEASUREMENT AND PAYMENT

4.1	METHOD OF MEASUREMENT

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WHEN A "LUMP SUM" CONTRACT IS USED, DELETE THE TITLE PART 4:  MEASUREMENT AND PAYMENT, AND BOTH ARTICLES FROM THIS SECTION.  MEASUREMENT AND PAYMENT WILL BE ADDRESSED IN PART 4 OF SECTION 01009 -GENERAL INFORMATION AND REQUIREMENTS OR SECTION 01010 - SUMMARY OF WORK.

WHEN NOT A "LUMP SUM" CONTRACT, SELECT APPLICABLE PHRASES; USE THE "NO MEASUREMENT" PHRASE WHEN NONE OF THE PAY ITEMS IN THIS SECTION ARE INCLUDED IN THE BID SCHEDULE.
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A.	Units:  The work described in this section will [not be measured for payment.]  [be measured and paid for] [on a lump sum basis.]  [by the cubic yard, based on the dimensions of the structure and the details shown on the drawings.]  [No payment will be made for concrete placed beyond the lines and grades shown.]  [Reinforcing steel will [be measured and paid for by the pound as computed based on the dimensions and reinforcing details shown on the drawings.]]  [not be paid for separately, but is a part of the payment for concrete.]]  [Clearing and grubbing will be [paid for separately under Section 02231 ‑ Clearing and Grubbing.]]  [included in the bid price for other items of the Contract.]]

4.2	BASIS OF PAYMENT

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WHEN NOT A "LUMP SUM" CONTRACT, SELECT APPLICABLE PHRASES; USE THE "NO DIRECT PAYMENT" PHRASE WHEN NONE OF THE PAY ITEMS IN THIS SECTION ARE INCLUDED IN THE BID SCHEDULE.

WHEN NOT A "LUMP SUM" CONTRACT AND PAYMENT IS TO BE MADE UNDER THIS SECTION, SELECT APPLICABLE PAY ITEMS.  DO NOT CHANGE PAY ITEM NUMBER.  WHEN GOVERNMENT‑FURNISHED PROPERTY IS SPECIFIED FOR PAY ITEMS, THE LETTER SUFFIX GF WILL BE ADDED AFTER THE PARENTHESIS OF THE ITEM NUMBER.
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A.	Payment:  [No direct payment for the work described under this section will be made.  Include consideration for this item in the bid price for other items of the Contract.]  [Prices and payment will be full compensation for the work described in this section.  Payment will be made under:]

Pay Item                                    		Pay Unit

03310(01)  Structural Concrete	Lump Sum
03310(02)  Structural Concrete	Cubic Yard
03310(03)  Structural Concrete	Cubic Meter
03310(10)  Concrete, Type A	Lump Sum
03310(11)  Concrete, Type A	Cubic Yard
03310(12)  Concrete, Type A	Cubic Meter
03310(20)  Concrete, Type B	Lump Sum
03310(21)  Concrete, Type B	Cubic Yard
03310(22)  Concrete, Type B	Cubic Meter
03310(30)  Reinforcing Steel	Pound
03310(31)  Reinforcing Steel	Kilogram

END OF SECTION