SECTION 602 - REINFORCING STEEL
602.01 Description. This work consists of furnishing and placing reinforcing steel in
accordance with these specifications and in reasonably close conformity with the dimensions, bending, spacing, and other requirements shown on the plans. Synthetic structural fibers meeting the requirements of Subsection 711.04 may be used in lieu of wire mesh in some items of construction. Substitution of fibers for wire mesh will be allowed in the construction of paved ditches, paved flumes, paved inlet apron, driveways, guard rail anchors and pile encase ments. Substitution in any other items of work must be approved by the State Construction Engineer prior to use.
602.02 Materials. Reinforcing steel shall conform to the requirements of Section 711
and Subsection 805.02.
602.03 Construction Requirements.
602.03.1 Bar List and Order Lists . The bar lists and bending schedules shown on the
plans are primarily for the purpose of estima ting quantities. Lengths of box culverts and box bridges, and depths of inlets, etc. shown on the plans are also approximate. The Contractor shall verify the quantity, size, and shape of the reinforcement for compliance with the structural drawings and make the necessary corrections, if any, before ordering. In the case of box culverts, box bridges, inlets, etc., verification shall be made after the Engineer has furnished the Contractor with a list of the staked lengths or depths for structures. Errors in the bar list and bending schedule shall not be cause for adjustment of the contract unit price, and the Contractor shall be fully responsible for all expenses caused by the Contractor’s failure to furnish the proper size, shape, length, and quantity of reinforcing steel required. When stipulated in the contract, or at the option of the Contractor when not stipulated, order lists and bending diagrams shall be furnished to the Engineer for approval. In these cases no materials shall be ordered until the lists and bending diagrams have been approved. The approval of order lists and bending diagrams by the Engineer will in no way relieve the Contractor of the responsibility for the correctness of the lists and diagrams. All expense incident to the revision of materials furnished in accordance with such lists and diagrams to make them comply with the design drawings and lengths as staked by the Engineer shall be borne by the Contractor.
602.03.2 Protection of Materials. Steel reinforcement shall be protected in accordance
with Subsection 805.03.1.
602.03.3 Bending. Bending shall be in accordance with Subsection 805.03.2.
602.03.4 Placing and Fastening. The steel reinforcement shall be accurately placed in
the positions shown on the plans and firmly held during the placing and setting of concrete. Bars shall be tied at all intersections, except where spacing is less than one foot in each direction alternate intersections may be tied. All reinforcing steel shall be securely spaced from the forms and between layers by means of approved precast mortar bl ocks of minimum size for ad equacy, or metal spacers or devices. Where possible, all spacer devices shall be arranged so that they cannot be detected in the completed structure. Metal devices that are in contact with the exterior surface of the concrete shall be one of the types specified in Subsection 711.02.7. Gravel, pieces of broken stone or brick, metal pipe, and wooden blocks shall not be used for spacers or chairs. Reinforcement shall be accurately and secure ly placed to the dimensions shown on the plans, within a tolerance of one-half inch, then inspected and approved by the Engineer prior to the placing of concrete. Concrete pl aced in violation of th is provision may be rejected and its removal required. Substitution of different size bars will be permitted only with specific authorization by the Engineer. If steel is substituted, it shall have a cross sectional area equivalent to or greater than the design area.
602.03.4 1--Splicing. Except where shown on the plan s, splicing of bars will not be
permitted without the written approval of the Engineer. Splices, when permitted, shall be staggered as far apart as possible. Unless otherwise shown on the plans, spliced bars shall be lapped 20 diameters. In lapped splices, the bars shall be placed in contact and wired together in a manner that will maintain
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