352 Percent Reduction = f’c-X 0.6f c - Where: f c = Design Strength, psi X = Observed Strength, psi = Standard Deviation The percent reduction shall be applied to the sublot with the low strength.
601.16 Pay Items :
ITEM DESCRIPTION UNIT 601001 -* Class A Concrete Cubic Yard 601002 -* Class B Concrete Cubic Yard 601003 -* Class K Concrete Cubic Yard 601003 -* Class K Concrete, Architectural Cubic Yard 601005 -* Class C Concrete Cubic Yard 601006 -* Class D Concrete Cubic Yard 601009 -* Class H Concrete Cubic Yard 601019 -* Concrete Protective Coating Square Foot 601025 -002 Modified Concrete, Class A Cubic Yard 601025 -003 Modified Concrete, Class B Cubic Yard 601025 -005 Modified Concrete, Class C Cubic Yard 601025 -006 Modified Concrete, Class D Cubic Yard 601025 -007 Modified Concrete, Class H Cubic Yard 601025 -008 Modified Concrete, Class K Cubic Yard 601026 -002 Modified Architectural Concrete, Class B Cubic Yard 601026 -003 Modified Architectural Concrete, Class H Cubic Yard 601026 -004 Modified Architectural Concrete, Class K Cubic Yard 601046 -* Modified Concrete End Post Each * Sequence number 353 SECTION 602 REINFORCING STEEL 602.1 -DESCRIPTION : This work shall consist of furnishing and placing galvanized, epoxy coated, or uncoated reinforcing steel or corrosion resistant reinforcement in accordance with these Specifications and in reasonably close conform ity with the Plans. 602.2 -MATERIALS : The materials shall meet the requirements specified in the following Subsections of
Division 700 — :
MATERIAL SUBSECTION Corrosion Resistant Reinforcing Steel Bar, Stainless* 709.1.1 Corrosion Resistant Reinforcing Steel Bar, High Chromium* 709.1.2 Epoxy Coated Reinforcing Steel 709.1.4 Galvanized Reinforcing Steel 709.1.3 Reinforcing Steel Bar 709.1 Welded Wire Fabric Reinforcement 709.4 * The degree of corrosion resistance will be specified in the plans. CONSTRUCTION METHODS 602.3 -ORDER LISTS : All order lists and bending diagrams shall be furnished by the Contractor. If requested by the Engineer, order lists and bending diagrams shall be submitted for approval. Approval of order lists and bending diagrams by the Engineer shall in no way relieve the Contractor of responsibility for the correctness of such lists and diagrams. 602.4 -PROTEC TION OF MATERIALS : Steel reinforcement shall be stored above the well -drained surface of the ground upon platforms, skids, or other supports and shall be protected from mechanical injury. Reinforcem ent shall be free from injurious defects such as cracks and laminations. Any loose scale, loose rust, dirt, paint, grease, oil or other foreign materials present on the reinforcement shall be removed by wire brushing, sand blasting or other approved metho ds before the placement of concrete. Reinforcing steel which will be exposed over the winter shall be protected, within one week after the placing of the initial concrete, with a brush coat of neat cement, mixed with water to a consistency of thick paint. This coating shall be removed by lightly tapping with a hammer or other tool not more than one week before the placing of the adjacent pour. 602.5 -BENDING OF REINFORCING BARS : Unless otherwise permitted, all reinforcing bars shall be cold bent in the shop. Bars partially embedded in concrete shall not be field bent except when shown on the Plans or permitted by the Engineer. Only competent men shall be employed for cutting and bendin g, and proper appliances shall be provided for the work.