Document - 2.pdf

2.2

American Concrete Institute Standard:

ACI 318

Building Code Requirements for Reinforced Con-

crete

2.3

Federal Specification

SS-S-210A

Sealing Compound, Preformed Plastic, for Ex-

pansion Joints and Pipe Joints

3. Ordering Information

3.1 Unless otherwise designated by the purchaser before

placing an order, a structure designed in accordance with

Section

of this specification and found to satisfactorily meet

the requirements imposed when tested and inspected as de-

scribed herein shall be acceptable. The test of materials as

required shall be done in accordance with applicable ASTM

International standards. Inspection, when required, shall in-

clude checks on fabrication and placing of reinforcement and

concrete in accordance with approved design drawings.

4. Materials

4.1

Cementitious Materials:

4.1.1

Cement—

Cement shall conform to the requirements

for Portland cement of Specification

C150

or shall be Portland

blast-furnace slag cement or Portland-pozzolan cement con-

forming to the requirements of Specification

C595

, except that

the pozzolan constituent in the Type IP Portland-pozzolan

cement shall be fly ash.

4.1.2

Fly Ash—

Fly ash shall conform to the requirements of

Specification

C618

, Class F or Class C.

4.1.3

Ground Granulated Blast—

Furnace slag (GGBFS0-

GGBFS) shall conform to the requirements of Grade 100 or

120 of Specification

C890

4.1.4

Allowable Combinations of Cementitious Material—

The combination of cementitious materials used in concrete

shall be one of the following:

4.1.4.1 Portland cement only;

4.1.4.2 Portland blast furnace slag cement only;

4.1.4.3 Slag-modified Portland cement only;

4.1.4.4 Portland-pozzolan cement only;

4.1.4.5 A combination of Portland cement and fly ash;

4.1.4.6 A combination of Portland cement and ground

granulated blast-furnace slag; and

4.1.4.7 A combination of Portland cement, ground granu-

lated blast-furnace slag (not to exceed 25 % of the total

cementitious weight), and fly ash (not to exceed 25 % of the

total cemenetitious weight.

4.2

Aggregates—

Aggregates shall conform to Specification

C33

and lightweight aggregates shall conform to Specification

C330

, except that the requirements for grading shall not apply.

4.3

Water—

Water used in mixing concrete shall be clean

and free of injurious amounts of oils, acids, alkalis, salts,

organic materials, or other substances incompatible with con-

crete or steel.

4.4

Admixtures—

Admixtures shall conform to Specification

C494/C494M

C618

and shall not be injurious to other

products used in the concrete.

4.4.1

Air-Entraining Admixtures—

Air-entraining admix-

tures conforming to Specification

C260

shall be used when

there is a risk that the concrete may be exposed to freeze-thaw

cycles. The concrete mixture shall contain 5.5

1.5 % air by

volume as determined by Test Method

C231

4.5

Steel Reinforcement—

Steel reinforcement shall conform

to Specification

A82/A82M

A496/A496M

for wire; Speci-

fication

A185/A185M

A497/A497M

for wire fabric; Speci-

fications

A416/A416M

and

A421/A421M

for prestressed wire

and strand; or Specification

A184/A184M

A615/A615M

A616/A616M

A617/A617M

, or

A706/A706M

for bars.

5. Design Requirements

5.1

Design Method—

The method of structural design of

reinforced concrete as outlined in the ACI 318 Building Code

shall be used to design the concrete sections, including the

reinforcement required, when the structure is subjected to the

loading conditions covered in Practice

C890

. Design require-

ments in excess of these specifications shall be identified by the

purchaser.

5.1.1

Alternative Method to Design—

An alternative method

to the design of a structure is acceptable, with the permission

of the purchaser, by performing required performance tests on

the completed structure to confirm adequate strength.

5.2

Access Openings—

The structural design shall take into

consideration the number, placement, and size of access

openings.

5.3

Floors—

The minimum floor thickness resulting from

slope shall be considered as nominal floor thickness in the

structure.

5.4

Knockouts and Sumps—

Knockouts and sumps shall be

designed to carry the loads imposed upon them. The basic

structure shall be designed to carry all imposed loads with

knockouts removed.

5.5

Placement of Reinforcement—

The minimum concrete

cover for reinforcing bars, mats, or fabric shall not be less than

1 in. (25 mm) for water retaining structures and

⁄

in. (19 mm)

for other structures subject to the provisions of Section

5.6

Concrete Strength—

The minimum compressive strength

(

) for design shall be 4000 psi (28 MPa) at 28 days of age.

5.7

Joints—

Where required, sealed joints in sectional pre-

cast concrete structures shall be of such a design to prevent

unacceptable leakage when used with a sealant (

Note 3

)

approved by the purchaser and acceptable to the manufacturer.

The criteria for unacceptable leakage will be determined by the

purchaser’s specifications. Where potable water is involved,

caution advises selecting a sealant that will not contaminate the

water for its intended purposes.

OTE

3—Refer to Specification

C990

or Federal Specification SS-S-

210A for guidance.

5.8

Lifting Devices—

Design of embedded lifting devices

shall conform to requirements as specified in 8.4 under Special

Loading Considerations of Practice

C890

Available from American Concrete Institute (ACI), P.O. Box 9094, Farmington

Hills, MI 48333-9094,

http://www.aci-int.org

Available from Standardization Documents, Order Desk, Bldg. 4, Section D,

700 Robbins Ave., Philadelphia, PA 19111-5094. Attn: NPODS.

C913 − 08

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