ACI 318-Development and Splices
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DEVELOPMENT AND SPLICES OF REINFORCEMENT ACCORDING ACI318M-08, CHAPTER a- Tension Development Length Calculations According ACI 12.2: fy 420 fc' 28 1.3 For Top bars (Min. 300mm concrete Cast below), ACI 1 1.0 For others, ACI 12.2.4 1.0 For uncoated and zinc-coated (galvanized) reinforcem λ 1.0 For normalweight concrete Ld for Bars dia <= 20 mm : ACI 12.2.2 = 49.1 d For Top bars (Min. 300mm concrete Cast below), ACI 1 = 37.8 d For others, ACI 12.2.4 Ld for Bars dia > 20 mm : ACI 12.2.2 = 60.7 d For Top bars (Min. 300mm concrete Cast below), ACI 1 = 46.7 d For others, ACI 12.2.4 b- Compression Development Length Calculations According ACI 12.3: = 19.0 d ACI 12.3.2 = 18.1 d ACI 12.3.2 = 19.0 d c- Tension Development of standard hooks length Calculations According ACI 12. = 19.0 d ACI 12.5.2 N/mm 2 N/mm 2 ψt ψe Ld= Ld= dc = max o and not less than 200 mm , ACI 12.3.1 Ldh = 8db and 150 mm , ACI 12.5.1
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Transcript of ACI 318-Development and Splices
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
Sheet2
Sheet3
