Pile Cap For 1 Piles 2k5x35

PILECAP DESIGN FOR 1 PILES WITH A SINGLE COLUMN THICKNESS OF PILECAP (T) = 0.60 m CLEAR COVER = 0.075 m WIDTH OF PILECAP (B) = 0.70 m LENGTH OF PILECAP (L) = 0.70 m WIDTH OF COLUMN (b) = 0.30 m DEPTH OF COLUMN (d) = 0.30 m fck FOR PILECAP = 25 Mpa fy FOR PILECAP = 415 Mpa THICKNESS OF SOIL LAYER ABOVE PILECAP = 0.80 m 3 UNIT WEIGHT OF SOIL ABOVE PILECAP = 18.00 kN/m CLEAR CANTILEVER FROM PILE = 0.15 m DIAMETER OF PILES = 0.40 m UNFACTORED REACTIONS AT COLUMN BASE Fy (kN) Fx (kN) Fz (kN) Mx (kN.m) Mz (kN.m) COLUMN 317.87 -2.59 -18.94 0.00 0.00

C

Y

0.6

X Z

0.7 0.3 0.7

1

0.3

COLUMN MOMENT DUE TO SHEAR AT PILECAP BASE (MX') MOMENT DUE TO SHEAR AT PILECAP BASE (MZ') TOTAL BENDING MOMENT (MX) TOTAL BENDING MOMENT (MZ) TOTAL VERTICAL UNFACTORED FORCE

-11.36 1.55 -11.36 1.55 363.68

kN.m kN.m kN.m kN.m kN

PILE NO. 1

2

rxi (m)

rxi

0.000

0.00

FINAL FORCES IN PILE (kN) 364

X Z 364 kN 0.3

0.15

364 kN SECTION ALONG X

MAXIMUM ULTIMATE BENDING MOMENT (MUZ) EFFECTIVE DEPTH ALONG-X DIRECTION EFFECTIVE DEPTH ALONG-Z DIRECTION X-DIRECTION Ast REQUIRED

= 82 = 0.519 = 0.507

kN.m m m

= 727

mm2

MIN. Ast REQUIRED DIA. OF MAIN BARS DIA. OF DISTRIBUTION BARS REQUIRED NUMBER OF MAIN BARS PROVIDED NUMBER OF MAIN BARS REQUIRED NUMBER OF DISTRIBUTION BARS PROVIDED SPACING OF DIST. BARS Z-DIRECTION MIN. Ast REQUIRED DIA. OF DISTRIBUTION BARS REQUIRED NUMBER OF MAIN BARS PROVIDED NUMBER OF DIST. BARS

= 436 = 12 = 12 =6 =6 =4 =4

mm mm mm mm mm mm mm

= 426 = 12 =4 =4

mm2 mm mm mm

2

CHECK FOR SHEAR

MAXIMUM ULTIMATE SHEAR AT CRITICAL SECTION (VU) ULTIMATE SHEAR STRESS (τu) pt OF STEEL PROVIDED (%) SHEAR STRESS IN CONCRETE (τC)

= 546 = 1.50 = 0.20 = 0.33

kN

SHEAR STRESS RESISTED BY SECTION (τC')

= 1.69

N/mm2

DESIGN FOR SHEAR IS NOT REQUIRED IN X-DIRECTION.

2

N/mm % 2 N/mm

X-DIRECTION Ast REQUIRED

= 727

mm2

= 436 = 12 = 12 =6 =4 = 99 = 188

mm mm mm

2

= 426

mm2

MIN. Ast REQUIRED DIA. OF MAIN BARS

= 426 = 12

2

NO OF BARS REQUIRED FOR MAIN STEEL

=4

REQUIRED SPACING OF MAIN BARS

= 195

MIN. Ast REQUIRED DIA. OF MAIN BARS DIA. OF DISTRIBUTION BARS NO OF BARS REQUIRED FOR MAIN STEEL NO OF BARS REQUIRED FOR DIST. STEEL REQUIRED SPACING OF MAIN BARS REQUIRED SPACING OF DISTRIBUTION BARS Z-DIRECTION Ast REQUIRED

mm mm

mm mm

15 0.15 0.2 0.25 0.5 0.75 1 1.25 1.5

0.28 0.315 0.35 0.46 0.54 0.6 0.64 0.68

1.75

0.71

2 2.25 2.5 2.75 3

0.71 0.71 0.71 0.71 0.71

mm 2.5 2.8 3.1 3.5

20

25

30

0.28 0.315 0.36 0.48 0.56 0.62 0.67 0.72

0.29 0.325 0.36 0.49 0.57 0.64 0.7 0.74

0.29 0.33 0.37 0.5 0.59 0.66 0.71 0.76

0.75

0.78

0.8

0.79 0.81 0.82 0.82 0.82

0.82 0.85 0.88 0.9 0.92

0.84 0.88 0.91 0.94 0.96

15 20 25 30

2 3 4 5

0.2 0.2 0.20

4

0.325 0.325 0.325