Pile Cap Design (4-Piles)

DESIGN OF PILE CAP ( For Four Piles Only)( Considering Full Pile Capacity For Design)

INPUT DATA: GENERAL PILE CAP-1Maximum Load On A Pile/Pile Capacity (kN) P 567.5Total Gravity Load (kN) 800

Diameter Of Pile (m) 0.3

Length Of Col./Pedestal Along X Dir (m) 0.7

Length Of Col./Pedestal Along Z Dir (m) 0.7

415

20Load Factor F z 1.5

0.5dASSUMED DATA:

Dia Of Bar Along X-Direction(mm) 12

Dia Of Bar Along Z-Direction(mm) 12

Dia Of Secondary Bars (mm) 10Depth Of Slab(mm) 700Pile Spacing Along X Direction (m) 1.1Pile Spacing Along Z Direction (m) 1.1Projection Of Slab Beyond Piles (m) 0.15DERIVED DATA:Cantilever Projection Along X Direction (m) 0.2Cantilever Projection Along Z Direction (m) 0.2Effective Depth In X Direction (mm) 644Effective Depth In Z Direction (mm) 632Length Of Slab Along X Direction (m) 1.7Length Of Slab Along Z Direction (m) 1.7

113.14285714

113.14285714DESIGN OF SLAB:Along X Direction Factored moment (kN-m) 340.5 Effcctive Depth Required (mm) 269.38881284 Provide Overall Depth (mm)Check For Depth (OK/NOT OK) OK Effective Depth Provided (mm) 644Area Of Steel:

A 4.4069338235 B .87fy*d 232516.2 C M*10^6 340500000

1507.4855562

13.323735977

14

1584 Spacing (mm) 121.42857143 Spacing Provided (mm) 121Percentage Steel Provided 0.1446839605Along Z Direction Factored moment (kN-m)

DP

Lcx

Lcz

Yield Stress Of Steel (N/mm2) fy

Yield Stress Of Concrete (N/mm2) fck

Фx x

Фz O

Фsec

Area Of Фx Bars (mm2)

Area Of Фz bars (mm2)

0.87*fy2/(fck*bz)

Area Of Steel(Ast) (mm2)

Nos Of ΦX Bar Required

Nos Of ΦX Bar Provided

AstCD Provided (mm2)

Effcctive Depth Required (mm) Provide Overall Depth (mm) Effective Depth Provided (mm)Area Of Steel:

A

B

C

Spacing (mm) Spacing Provided (mm)

CHECK FOR SHEAR:One Way Shear Check:Section For Diagonal tension is tested at adistance 0.5d from the face of the pedestal ie at section AA

Distance Between Pile & Column/Pedestal Faces (mm) X 50Along X Direction

Y 272 Z 28

Shear Force By Linear Interpolation (kN) 105.93333333

0.0967604433Shear strength of Concrete For Above %

pt 0.1446839605

20Beta 16.050197182

0.2829391177

Whether Ok For One Way Shear OKTwo way Shear CheckThe Critical Section Lies 0.5d Around The Pedestal Of The Column

Shear Force Vo (kN) 1200

0.3466060337

Shear Strength Of Concrete 1.1180339887Whether OK For Two Way Shear OK

CHECK FOR DEVELOPMENT LENGTH :

Bond Stress 1.92

564Straight Length Available Beyond The Face Of Pedestal (mm) 450

0.87*fy*dz

4*.87*fy2*MFac*106/(fck*bx)

2*0.87*fy2/(fck*bx)

Area Of Steel(Ast) (mm2)

Nos Of ΦX Bar Required

Nos Of ΦX Bar Provided

AstCD Provided (mm2)

Vu

Nominal Shear StressГv (N/mm2)

Of Steel (n/mm2)

fck

Гc(N/mm2)

Nominal Shear StressГv (N/mm2) Гv (N/mm2)

Гc (N/mm2)

Гbd (N/mm2)

Development Length Of Фx Bars (mm) Ld

Whether Bending Of Bar Required REQUIREDMin Length Of Bars To Be Bent (mm) 114

DESIGN OF PILE CAP ( For Four Piles Only)( Considering Full Pile Capacity For Design)