Seismic Design and Detailing of Reinforced Concrete Structures Based on CSA A23.3 - 2004
A23.3-04_Corbels
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A23.3-04 Precast Corbel Design Spreadsheet Design Information fc' = 35 Mpa fy = 400 Mpa (Always use Gr 400W) Vf = 1000 kN Nf = 200 kN (Min. 0.2 Vf, Max. 1.0 Vf) Lp = 300 mm (Corbel Projection) a = 165 mm (Typ. 0.75 Lp) h = 600 mm (Overall Corbel Height) d = 545 mm b = 600 mm (Corbel Width) Lc = 600 mm (Column Depth) c = 50 mm (Cover to back of As bars) 0.70 (0.70 for CPCI Certified Plant)) ag = 20 mm (Aggregate size, mm) a/d = 0.303 (Should be < 1.0) fc = fy Lc c Lp e (e = 100 mm)- min. (2/3 Avf + An)
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Corbel design
Transcript of A23.3-04_Corbels
Sheet1A23.3-04 Precast Corbel Design SpreadsheetJan 2008A23.3-04 Precast Corbel Design SpreadsheetJan 2008A23.3-04 Precast Corbel Design SpreadsheetJan 2008Tension Development Length Calculations & Details for Std. Hooks In TensionLdh = Lhb*mod factor in Cl. 12.5.3, but >8db, or >150 mmvr,max =6.13MpaVr,max =2205kN(Should be < Vf)Af =1217mm2An =588mm2As = Af+An1805mm2As =1860mm21015M bars720M barsDesign Information425M bars330M barsfc' =35Mpa235M barsModification Factor =0.70(Can use 0.70, if side cover to edge As bars is > 60 mm, back cover "c" is > 50 mm)fy =400Mpa(Always use Gr 400W)- Make sure As bars fitVf =1000kN(See pg. 3 for min spcg)fc' =35MpaLdh-Req'dLdh-MinLdh-Actualdb (mm)Nf =200kN(Min. 0.2 Vf, Max. 1.0 Vf)15M189150550mm16.0Avf =1908mm2An =588mm2As = Af+An1860mm220M231156550mm19.5Lp =300mm(Corbel Projection)(2/3) Avf =1272mm225M298202550mm25.2a =165mm(Typ. 0.75 Lp)30M354239550mm29.9h =600mm(Overall Corbel Height)35M422286550mm35.7d =545mm(Min. clr spcg bet bars)b =600mm(Corbel Width)A or GSminMin bend IDLc =600mm(Column Depth)15M253mm3015M90c =50mm(Cover to back of As bars)20M304mm3020M100fc =0.70(0.70 for CPCI Certified Plant))As,min =1145mm225M403mm3525M150ag =20mm(Aggregate size, mm)30M489mm4230M20035M589mm5035M250a/d =0.303(Should be < 1.0)(Grade 400W)Ah =636mm2(2/3)d =363mmAdd410M corbel ties withinof the As steel (Equally spaced)Page 1 of 3Page 2 of 3Page 3 of 3
fyLccLpce(e = 100 mm)-min.d(2/3 Avf + An)Af
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