SECTION 03200

CONCRETE REINFORCEMENT

PART 1 – GENERAL

1.1 DESCRIPTION OF WORK

A. Reinforcement for concrete structures shall comply with the following

requirements for materials and applications:

1. Non-Coated Steel: Use non-coated steel for those portions of structures

situated one meter and higher above grade. Also use non-coated
steel whenever the reinforcement is cathodically protected. Refer to
Section 03200.

2. Epoxy-Coated Steel: Use epoxy coated steel for those portions of

structures situated below grade and up to one meter above grade,
provided that the reinforcement is not cathodically protected. Refer to
Section 03210.

3. Polymer Grids: Use polymer grids reinforcement for non-load bearing

structures on grade including sidewalks and aprons. Refer to
Section 03220.

B. The work of this Section includes furnishing, fabrication and placement of

un-coated reinforcement for cast-in-place concrete, including bars, welded wire
fabric, ties and supports.

C. Related Work:

1. Section 03100: Concrete Formwork

2. Section 03210: Epoxy Coated Concrete Reinforcement
3. Section 03220: Polymer Grids (Plastic Mesh) Reinforcement
4. Section 03300: Cast-In-Place Concrete
5. Section 03400: Precast Concrete

1.2 QUALITY ASSURANCE

A. Codes and Standards: Comply with the provisions of the following codes,
specifications, and standards, except as otherwise shown or specified:

RCMYAS Guide Specs 03200-1 Contract No.

Rev C, 29 Oct 05
 1. AWS D12.1 "Recommended Practices for Welding Reinforced Steel,
Metal Inserts and Connections in Reinforced Concrete Construction."

2. CRSI "Manual of Standard Practice."

3. ACI 301 "Specifications for Structural Concrete for Buildings."

4. ACI 315 "Manual of Standard Practice for Detailing Reinforced Concrete

Structures."

5. ACI 318 "Building Code Requirements for Reinforced Concrete."

6. ASTM A615 "Deformed and Plain Billet-Steel Bars for Concrete

Reinforcement."

7. ASTM A706 "Low Alloy Steel Deformed Bars for Concrete

Reinforcement."

8. SASO 2 "Steel Bars for the Reinforcement of Concrete."

9. SASO 223 "Method of Testing for Steel Fabric for Concrete

Reinforcement."

10. SASO 224 "Steel Fabric for Reinforcement of Concrete."

DELETE BELOW IF NOT REQUIRED.

B. Mock-Up or Sample Panels: Provide reinforcing for mockup or sample panels as

may be required for the cast-in-place concrete work specified.

1.3 SUBMITTALS

A. Manufacturer's Data:

1. For information only, submit copies of manufacturer's specifications and

installation instructions for all proprietary materials and reinforcement
accessories.

B. Mill Certificates:

1. Contractor shall furnish the Royal Commission copies of the

manufacturer's records of chemical and physical properties of all heats of
billet steel bars and copies of affidavit for materials stating that the
RCMYAS Guide Specs 03200-2 Contract No.
Rev C, 29 Oct 05
 material furnished meets the requirements for the steel reinforcement
specified. Manufacturers' records shall include certificates of mill analysis,
tensile, and bend tests.

DELETE THE FOLLOWING IF SHOP DRAWINGS NOT REQUIRED.

C. Shop Drawings:

1. Submit shop drawings for fabrication bending, and placement of concrete

reinforcement. Comply with ACI 315 "Manual of Standard Practice for
Detailing Reinforced Concrete Structures." Show bar schedules, stirrup
spacing, diagrams of bent, bars, arrangements and assemblies, as
required for the fabrication and placement of concrete reinforcement.

D. Mock-up or Sample Panels: Provide reinforcing for mockup or sample panels

required for mockup or sample cast-in- place concrete work.

1.4 DELIVERY, HANDLING AND STORAGE

A. Deliver reinforcement to the project site bundled, tagged and marked. Use metal
tags indicating bar size, lengths, and other information corresponding to
markings shown on placement diagrams.

B. Store concrete reinforcement materials at the site in the manner to prevent

damage and accumulation of dirt or excessive rust.

C. The manufacturer’s recommendations shall be followed in all aspects concerning

the shipping and storage of the high strength polymer grids reinforcement.

PART 2 – PRODUCTS

2.1 GENERAL

A. Proprietary names used for materials are intended to imply that products of the
named Saudi manufacturers are required. Equivalent products of other
manufacturers may only be used where local supply is not available.

2.2 MATERIALS

SELECT FROM BELOW. DELETE ITEMS NOT IN PROJECT OR IF

CLEARLY SHOWN ON DRAWINGS.

RCMYAS Guide Specs 03200-3 Contract No.

Rev C, 29 Oct 05
A. Deformed Reinforcing Bars: ASTM A615, and as follows:

1. Provide Grade 40 bars, except as otherwise indicated.

2. Provide Grade 60 bars, except as otherwise indicated.

B. Reinforcing Bars to be welded: ASTM A706.

DELETE BELOW IF NOT REQUIRED. COORDINATE DRAWINGS IF

BOTH PLAIN AND GALVANIZED REQUIRED.

C. Galvanized Reinforcing Bars: ASTM A153, hot-dip galvanized after fabrication

and bending.

D. Steel Wire: ASTM A82.

E. Welded Wire Fabric: ASTM A185.

DELETE BELOW IF NOT NECESSARY. CAN COST EXTRA.

1. Furnish in flat sheets, not rolls, unless rolls are acceptable to the Royal
Commission.

F. Column Spirals: Plain, cold-drawn wire, ASTM A82, or hot-rolled rods for spirals,
ASTM A615.

G. Supports for Reinforcement: Bolsters, chairs, spacers and other devices for
spacing, supporting and fastening reinforcement in place.

1. Use wire bar type supports complying with CRSI recommendations,

unless otherwise indicated. Do not use wood, brick, and other
unacceptable materials.

RETAIN THE FOLLOWING FOR EXPOSED STRUCTURES.

2. The supports shall be used in such a manner that they will not be exposed
or contribute to the discoloration or deterioration of the concrete.

RCMYAS Guide Specs 03200-4 Contract No.

Rev C, 29 Oct 05
 DELETE OR REVISE BELOW TO SUIT THE PROJECT.

3. For exposed-to-view concrete surfaces, where legs of supports are in

contact with forms, provide supports with either hot-dip galvanized or
stainless steel protected legs, at Contractor's option.

SELECT BELOW OR RETAIN LAST OPTION IF NO PREFERENCE.

4. For abrasive-blasted or bush-hammered concrete, provide special

stainless bar supports. (CRSI, Class E).

2.3 FABRICATION

A. General: Fabricate reinforcing bars to conform to required shapes and

dimensions, with fabrication tolerances complying with Concrete Reinforcing
Steel Institute (CRSI) "Manual of Standard Practice." In case of fabricating
errors, do not re-bend or straighten reinforcement in a manner that will injure or
weaken the material.

B. Unacceptable Materials: Reinforcement with any of the following defects will not
be permitted in the work:

1. Bar lengths, depths, and bends exceeding specified fabrication tolerances.

2. Bend or kinks not indicated on contract drawings or final shop drawings.

3. Bars with reduced cross-section due to excessive rusting or other cause.

PART 3 – EXECUTION

3.1 INSTALLATION

A. Comply with the CRSI recommended practice for "Placing Reinforcing Bars," for
details and methods of reinforcement placement and supports, and as herein
specified.

B. Clean reinforcement to remove loose rust and mill scale, earth, and other
materials which reduce or destroy bond with concrete.

RCMYAS Guide Specs 03200-5 Contract No.

Rev C, 29 Oct 05
C. Position, support, and secure reinforcement against displacement by formwork,
construction, or concrete placement operations. Locate and support reinforcing
by metal chairs, runners, bolsters, spacers and hangers, as required.

D. For concrete in contact with soil, reinforcement including ties, shall be placed to
obtain a minimum concrete cover of 75 mm, while concrete exposed to weather,
concrete clear cover shall be 50 mm. For concrete not in contact with soil or
exposed to weather, reinforcement including ties shall have a minimum concrete
cover of 20 mm for slabs, walls and joists, and 40 mm for beams and columns.
For shells and folded plates, concrete cover shall be 20 mm for 20 mm bars and
larger, and 12 mm for 16 mm bars and smaller.

E. Arrange, space, and securely tie bars supports and reinforcement together with
1.52 mm wire to hold reinforcement accurately in position during concrete
placement operations. Set wire ties so that twisted ends are directed away from
exposed concrete surfaces.

F. Install welded wire fabric in as long lengths as practicable. Lap adjoining pieces
at least one full mesh and lace splices with 1.52 mm wire. Do not make end laps
midway between supporting beams, or directly over beams of continuous
structures. Offset end laps in adjacent widths to prevent continuous laps.

G. Provide sufficient numbers of supports and of strength to carry reinforcement.

Do not place reinforcing bars more than 50 mm beyond the last leg of any
continuous bar support. Do not use supports as bases for runways for concrete
conveying equipment and similar construction loads.

H. Splices:

1. Provide standard reinforcement splices by lapping ends, placing bars in

contact, and tightly wire tying. Comply with requirements of the contract
drawings for minimum lap of spliced bars.

FOR BRIDGE STRUCTURES, DELETE ABOVE AND RETAIN THE

FOLLOWING.

2. All splices in reinforcement shall be as shown on contract drawings or as

directed by the Royal Commission. Minimum lap for bar splices shall be as
noted on the plans. Bar splices shall be made by lapping ends, placing
bars in contact, and securely wiring together.

DELETE THE FOLLOWING IF NOT PERMITTED.

RCMYAS Guide Specs 03200-6 Contract No.

Rev C, 29 Oct 05
 3. Mechanical butt splicing, using exothermic welding processes and high-
strength steel sleeves which develop the same values of strength, may be
used in lieu of electric-arc welding, at Contractor's option. Comply with
manufacturer's directions for preparation of bars and installation
procedures.

DELETE THE FOLLOWING IF NOT PERMITTED. USE ONLY WHEN NO

COMPUTED TENSION IN COLUMNS.

4. End splices in vertical reinforcing for 35 mm bars and larger may be made
using a mechanical friction device which provides positive alignment
during placement. Comply with manufacturer's directions for bar
preparation and installation of clamping devices.

5. Welding: Comply with the requirements of AWS D12.1 for field welding.
Prior to field welding, determine the weldability of reinforcing bars by a
laboratory chemical analysis of steel. Only steel conforming to the
chemical requirements specified in AWS D12.1 may be welded.

DELETE THE FOLLOWING IF NOT REQUIRED.

a. Inspection and Tests of Welds: Tests shall be made by the

independent testing laboratory for reinforcing bar welds, as follows:

(1) Certificate of welders engaged in electric-arc welding of

reinforcing.

(2) Inspection of reinforcing bar welds.

(3) X-ray test of one of the first 3 arc-welds made by each

welder.

(4) Make 2 tensile tests of sample welds of the largest size bar
for each type of welding.

b. Deficient welds will require the Contractor to provide and pay for
such additional X-rays and tests as directed by the Royal
Commission. Repair or replace defective welds to the satisfaction of
the Royal Commission.

RCMYAS Guide Specs 03200-7 Contract No.

Rev C, 29 Oct 05
 + + END OF SECTION 03200 + +

RCMYAS Guide Specs 03200-8 Contract No.

Rev C, 29 Oct 05