Laserfiche WebLink
1 3 inches to a concrete surface deposited against earth without intervening forms. <br /> 2 <br /> 3 2% inches to the top surface of a concrete bridge deck or bridge approach slab. <br /> 4 <br /> 5 2 inches to a concrete surface when not specified otherwise in this section or in the <br /> 6 Contract documents. <br /> 7 <br /> 8 1'/2 inches to a concrete barrier or curb surface. <br /> 9 <br /> 10 Except for top cover in bridge decks and bridge approach slabs, minimum concrete cover ' <br /> 11 to ties and stirrups may be reduced by ' inch but shall not be less than 1 inch. Minimum <br /> 12 concrete cover shall also be provided to the outermost part of mechanical splices and <br /> 13 headed steel reinforcing bars. <br /> 14 <br /> 15 Reinforcing steel bar location, concrete cover and clearance shall not vary more than the <br /> 16 following tolerances from what is specified in the Contract documents: <br /> 17 <br /> 18 Reinforcing bar location for members 12 inches or less in thickness: ±0.25 inch <br /> 19 <br /> 20 Reinforcing bar location for members greater than 12 inches in thickness: ±0.375 <br /> 21 inch <br /> 22 <br /> 23 Reinforcing bar location for bars placed at equal spacing within a plane: the greater <br /> 24 of either ±1 inch or±1 bar diameter within the plane. The total number of bars shall <br /> 25 not be fewer than that specified. <br /> 26 <br /> 27 The clearance between reinforcement shall not be less than the greater of the bar <br /> 28 diameter or 1 inch for unbundled bars. For bundled bars, the clearance between <br /> 29 bundles shall not be less than the greater of 1 inch or a bar diameter derived from <br /> 30 the equivalent total area of all bars in the bundle. <br /> 31 <br /> 32 Longitudinal location of bends and ends of bars: ±1 inch <br /> 33 <br /> 34 Embedded length of bars and length of bar lap splices: <br /> 35 <br /> 36 No. 3 through No. 11: -1 inch <br /> 37 <br /> 38 No. 14 through No. 18: -2 inches <br /> 39 <br /> 40 Concrete cover measured perpendicular to concrete surface (except for the top <br /> 41 surface of bridge decks, bridge approach slabs and other roadway surfaces): ±0.25 <br /> 42 inch ' <br /> 43 <br /> 44 Concrete cover measured perpendicular to concrete surface for the top surface of <br /> 45 bridge decks, bridge approach slabs and other roadway surfaces: +0.25 inch, -0 inch <br /> 46 <br /> 47 Before placing any concrete, the Contractor shall: <br /> 48 <br /> 49 1. Clean all mortar from reinforcement, and <br /> 50 <br />