Vol 2 - Garney Construction

2.03 FABRICATIONbe embedded. Precast concrete supports shall be cast and properly curedfor at least 7 days before use and shall have a wire or other device castinto each block for the purpose of attaching them securely to reinforcingsteel.5. In Beams, Columns, Walls, and Slabs Exposed to View after FormRemoval: Use small precast concrete blocks made of same color asconcrete in which they are embedded. All-plastic bar supports and sideform spacers may be used, except where surface is exposed as describedabove.6. Design and fabricate special bar supports for top reinforcing bars inslabs where standard bar supports do not possess necessary geometry,strength, or stiffness.A. Follow CRSI Manual of Standard Practice.B. Bend bars cold.PART 3EXECUTION3.01 PREPARATIONA. Notify Engineer when reinforcing is ready for inspection and allow sufficienttime for inspection prior to placing concrete.B. Clean reinforcing bars of loose mill scale, oil, earth, and other contaminants.C. Coat wire projecting from precast concrete bar supports with dielectricmaterial, epoxy, or plastic.3.02 INSTALLATIONA. Bundle or space bars, instead of field bending where construction accessthrough reinforcing is necessary.B. Spacing and Positioning: Conform to ACI 318.C. Location Tolerances: In accordance with CRSI publication, “PlacingReinforcing Bars”.D. Splicing:1. Follow ACI 318.2. Use lap splices, unless otherwise shown or permitted in writing byEngineer.REINFORCING STEELPW/WBG/38205903 21 00 - 4 AUGUST 15, 2012©COPYRIGHT 2012 CH2M HILL