PILECAP DESIGN CALCULATIONS Project Name : s Client Name : s Engineer Name : s Design File : D:\Working\RCDC\Documentation\ACI Pilecap 2014\PC ACI 318M-14.rcdx Analysis File : C:\Users\Sudeep.PM\OneDrive - Bentley Systems, Inc\Desktop\RCDC -SampleFiles\Staad-Samples\STAAD Sample file new\RCC Wall - RCDC STAAD Demo.std Analysis Last Modified : 22-Apr-21 12:57:14 PM
Definitions:
 1. α = Coefficient of Thermal Expansion 2. ρact = Percentage steel provided 3. A1 = Area of Base for Load Transfer in 'sqm' 4. A2 = Area of Bearing under column in 'sqm' 5. AsfrPrv = Area of face reinforcement provided in 'sqmm' 6. AsfrReq = Area of face reinforcement required in 'sqmm' 7. AstPrv = Area of tensile reinforcement provided in 'sqmm/m' 8. AstReq = Area of tensile reinforcement required in 'sqmm/m' 9. AsvPrv = Area of shear reinforcement provided in 'sqmm/m' 10. AsvReq = Area of shear reinforcement required in 'sqmm/m' 11. Av = Location of section of shear-check from Pile Center 12. Beff = Effective Width for design for bending and shear in 'mm' 13. Beffsfr = Effective Width for design for Face Reinforcement in 'mm' 14. BMux = Factored Design Bending Moment for pile-cap along column D in 'kNm' 15. BMuy = Factored Design Bending Moment for pile-cap along column B in 'kNm' 16. Cx = Width of column in 'mm' 17. Cy = Length of column in 'mm' 18. D = Depth of Pilecap in 'mm' 19. Deff = Effective Depth of Pilecap in 'mm' 20. DfCol = Distance of Pile center to face of column in 'mm' 21. Icr = Moment of Inertia of concrete crack section in 'mm4' 22. Mcr = Cracking Moment 23. Mx = Bending Moment in column along Column D (from analysis) in 'kNm' 24. My = Bending Moment in column along Column B (from analysis) in 'kNm' 25. P = Axial load in pile due to Ptotal in 'kN' 26. Pcomb = Axial load in column for a load combination in 'kN' 27. Ppile = Axial Load on pile in 'kN' 28. Ptotal = Total vertical load on pile-cap for a load combination in 'kN' 29. Pmx = Axial load on pile due to moment Mx in 'kN' 30. Pmy = Axial load on pile due to moment My in 'kN' 31. sp = Spacing Between bars at outer most layer in 'mm' 32. Temp1 = Peak Hydration temperature in Degree 33. Temp2 = Seasonal Temperature Variations in Degree 34. Vc = Nominal shear strength provided by concrete in 'kN' 35. Vs Capacity = Shear strength capacity of provided shear reinforcement 'kN' 36. Vu = Design shear force in 'kN' 37. Vus = Design shear force for stirrups in 'kN' 38. Vs = Nominal shear strength provided by shear reinforcement, in 'kN' 39. Vx = Shear in Column along major axis (from analysis) in 'kN' 40. Vy = Shear in Column along minor axis (from analysis) in 'kN' 41. y = Neutral axis depth in 'mm' 42. φ = Strength reduction factor in shear 43. φ1 = Strength reduction factor in concrete bearing 44. Φ1Pnb = Bearing strength of column in 'kN' Code References: ACI 318M - 14 1. Ptmax : 7.3.3.1, 8.3.3.1, 9.3.3.1 2. Ptmin : 7.6.1.1 & 8.6.1.1/7.7.2.3 3. Vc : 22.6.5 4. Vcper : 22.5.5, 22.5.6 5. AvReq : 22.5.10.5 & 22.6.7 6. Min Shear Reinf : 7.6.3, 9.6.3 & 10.6.2 7. Max Stirrup Spacing : 9.7.6 & 10.7.6 8. One Way Shear Criteria : 13.2 & 13.4 9. Load transfer : 22.8 10. fs,perm : 24.3.2.1 11. fc,perm : 22.2.2.4.1 12. Wcr : Eq 4.2(a) BS 8007 (For Early / Initial Thermal Cracking) 1. Surface Zone for suspended slab : Figure A.1 2. Surface Zone for ground slab : Figure A.2 3. Factors for the calculation of minimum reinforcement : Table A.1