Sheet1DEVELOPMENT AND SPLICES OF REINFORCEMENT ACCORDING ACI318M-08, CHAPTER 12 a- Tension Development Length Calculations According ACI 12.2:Yield Strength of Steel (fy)fy420N/mm260000psi414N/mm2fc'28N/mm2Concrete Compressive Strength (fc')t1.3For Top bars (Min. 300mm concrete Cast below), ACI 12.2.44000psi28N/mm21.0For others, ACI 12.2.4e1.0For uncoated and zinc-coated (galvanized) reinforcement,, ACI 12.2.41.0For normalweight concreteLd for Bars dia 20 mm :Ld=ACI 12.2.2=60.7 dFor Top bars (Min. 300mm concrete Cast below), ACI 12.2.4=46.7 dFor others, ACI 12.2.4b- Compression Development Length Calculations According ACI 12.3:Ldc = max of= 19.0 dACI 12.3.2= 18.1 dACI 12.3.2=19.0 dand not less than 200 mm, ACI 12.3.1c- Tension Development of standard hooks length Calculations According ACI 12.5:Ldh == 19.0 dACI 12.5.2and shall not be less than the larger of 8db and 150 mm, ACI 12.5.1d- Tension Splice Length Calculations According ACI 12.15:e- Comperssion Splice Length Calculations According ACI 12.16:For fy 420 MPa== 0.0 dACI 12.16.1MINIMUM DEVELOPMENT AND SPLICE LENGTHS (mm)Bar Size d (mm)TENSIONCOMPRESSION LdHook LdhClass A Splice = LdClass B Splice = 1.3LdTop bars (Min. 300mm concrete Cast below)LdcSPLICELdClass A Splice= LdClass B Splice= 1.3Ld103781903784914914916392002981245422945459059059076722935814529267529688688688894267417166053056057867867861022305477186803436808848848841150343537207563817569839839831278381596251167476116715171517151719734767462813075331307170017001700220953383532149461014941942194219422525610954

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