Pile Cap Configurations

7/24/2019 Pile Cap Configurations

1/11

CHAPTER 7: Reinforced Concrete Column and Wall Footings

7.3 Pile Cap Configurations

Description

This application calculates pile coordinates and pile cap plan dimensions for pile groups with 2 to 20 piles.The purpose of this application is to show the pile group layout, pile coordinates and plan dimensions used in

Section 7.2 for selecting pile cap depth and reinforcement.

The user must enter the minimum pile spacing, factors for rounding pile coordinates and pile cap plan

dimensions to practical dimensions, and the minimum edge distance from center of pile to outside face of

concrete.

Input

Notation

Input Variables

Minimum pile spacing: s 3

Factor for rounding pile spacing: SzP 1

2

Factor for rounding pile cap dimensions: SzD 1

Minimum edge distance from center of pile: E +1 3


2/11


3/11

Pile Group P3

X3

+s 2 E Y3

+s2 2 E

=X3

5.5 ft =Y3

5.125 ft

P3

x3

T

s0 s

2

s

2

=

T

x3

0 1.5 1.5 ft

y3

T

2 s2

3

s2

3

s2

3

=

T

y3

1.75 0.875 0.875 ft

Angle between the centerline of the two piles in the base row and a centerline drawn between either of the two

piles in the base row to the pile at the apex of the 3 pile group:

atan

2 s2

s

= 60.255 deg

Dimension A rounded up to a multiple of SzD:

A SzD ceil

2 E

1

sin

1

tan

SzD

=A 18 in

Dimension B rounded up to a multiple of SzD:

B SzD ceil

E

+1 tan

1

sin 1

SzD

=B 19 in


4/11

Pile Group P4

X4

+s 2 E Y4

+s 2 E

=X4

5.5 ft =Y4

5.5 ft

P4

x4

T

s

2

s

2

s

2

s

2

=T

x4

1.5 1.5 1.5 1.5 ft

y4

T

s

2

s

2

s

2

s

2

=

T

y4

1.5 1.5 1.5 1.5 ft

Pile Group P5

X5

+s1 2 E Y5

+s1 2 E

=X5

6.75 ft =Y5

6.75 ft

P5

x5

T

s1

2

s1

2s0

s1

2

s1

2

=T

x5

2.125 2.125 0 2.125 2.125 ft

y5

T

s1

2

s1

2s0

s1

2

s1

2

=T

y5

2.125 2.125 0 2.125 2.125 ft


5/11

Pile Group P6

X6

2 +s E Y6

+s 2 E

=X6

8.5 ft =Y6

5.5 ft

P6x

6 T

s s 0 s s s 0 s

=T

x6

3 0 3 3 0 3 ft

y6

T

s

2

s

2

s

2

s

2

s

2

s

2

=T

y6

1.5 1.5 1.5 1.5 1.5 1.5 ft

Pile Group P7

X7

2 +s E Y7

2 +s2 E

=X7

8.5 ft =Y7

7.75 ft

P7

x7

T

s

2

s

2 s s 0 s s

2

s

2

=T

x7

1.5 1.5 3 0 3 1.5 1.5 ft

y7 T

s2 s2 s0 s0 s0 s2 s2

=T

y7

2.625 2.625 0 0 0 2.625 2.625 ft

Pile Group P8

X8

2 +s E Y8

2 +s2 E

=X8

8.5 ft =Y8

7.75 ft

P8


6/11

x8

T

s s 0 s s

2

s

2s s 0 s

=T

x8

3 0 3 1.5 1.5 3 0 3 ft

y 8 T

s2 s2 s2 s0 s0 s2 s2 s2

=T

y8

2.625 2.625 2.625 0 0 2.625 2.625 2.625 ft

Pile Group P9

X9

2 +s E Y9

2 +s E

=X9

8.5 ft =Y9

8.5 ft

x9 T

s s 0 s s s 0 s s s 0 s

P9

=T

x9

3 0 3 3 0 3 3 0 3 ft

y9 T

s s s s 0 s 0 s 0 s s s

=

T

y9

3 3 3 0 0 0 3 3 3 ft

Pile Group P10

X10

+3 s 2 E Y10

2 +s2 E

=X10

11.5 ft =Y10

7.75 ft

P10x

10 T

s s 0 s 3 s

2

s

2

s

2

3 s

2s s 0 s

=T

x10

3 0 3 4.5 1.5 1.5 4.5 3 0 3 ft

y10 T

s2 s2 s2 s0 s0 s0 s0 s2 s2 s2

=T

y10

2.625 2.625 2.625 0 0 0 0 2.625 2.625 2.625 ft


7/11

Pile Group P11

X11

+3 s 2 E Y11

2 +s2 E

=X11

11.5 ft =Y11

7.75 ft

P11

x11

T

3 s

2

s

2

s

2

3 s

2s s 0 s

3 s

2

s

2

s

2

3 s

2

=T

x11

4.5 1.5 1.5 4.5 3 0 3 4.5 1.5 1.5 4.5 ft

y11 T

s2 s2 s2 s2 s0 s0 s0 s2 s2 s2 s2

=T

y11

2.625 2.625 2.625 2.625 0 0 0 2.625 2.625 2.625 2.625 ft

Pile Group P12

X12

+3 s 2 E Y12

2 +s E

=X12

11.5 ft =Y12

8.5 ft

P12

x12

T

3 s

2

s

2

s

2

3 s

2

3 s

2

s

2

s

2

3 s

2

3 s

2

s

2

s

2

3 s

2

=T

x12

4.5 1.5 1.5 4.5 4.5 1.5 1.5 4.5 4.5 1.5 1.5 4.5 ft

y 12 Ts s s s s 0 s 0 s 0 s 0 s s s s

=T

y12

3 3 3 3 0 0 0 0 3 3 3 3 ft


8/11

Pile Group P13

X13

2 +2 s2 E Y13

2 +s E

=X13

13 ft =Y13

8.5 ft

P13

x13 T

2 s2 s0 2 s2 s2 s2 2 s2 s0 2 s2 s2 s2 2 s2 s0 2 s2

=T

x13

5.25 0 5.25 2.625 2.625 5.25 0 5.25 2.625 2.625 5.25 0 5.25 ft

y13

T

s s s s

2

s

2s0 s0 s0

s

2

s

2s s s

=T

y13

3 3 3 1.5 1.5 0 0 0 1.5 1.5 3 3 3 ft

Pile Group P14

X14

+3 s 2 E Y14

2 +s3 E

=X14

11.5 ft =Y14

10.75 ft

P14

x14

T

s s 0 s 3 s

2

s

2

s

2

3 s

2

3 s

2

s

2

s

2

3 s

2s s 0 s

=T

x14

3 0 3 4.5 1.5 1.5 4.5 4.5 1.5 1.5 4.5 3 0 3 ft

y14

T

s3 s3 s3 s

2

s

2

s

2

s

2

s

2

s

2

s

2

s

2s3 s3 s3

=T

y14

4.125 4.125 4.125 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 4.125 4.125 4.125 ft


9/11

Pile Group P15

X15

+4 s 2 E Y15

2 +s E

=X15

14.5 ft =Y15

8.5 ft

P15

x15 T

2 s s s 0 s 2 s 2 s s s 0 s 2 s 2 s s s 0 s 2 s

=T

x15

6 3 0 3 6 6 3 0 3 6 6 3 0 3 6 ft

y15 T

s s s s s s 0 s 0 s 0 s 0 s 0 s s s s s

=

T

y15

3 3 3 3 3 0 0 0 0 0 3 3 3 3 3 ft

Pile Group P16

X16

+3 s 2 E Y16

+3 s 2 E

=X16

11.5 ft =Y16

11.5 ft

P16

x16

T

3 s

2

s

2

s

2

3 s

2

3 s

2

s

2

s

2

3 s

2

3 s

2

s

2

s

2

3 s

2

3 s

2

s

2

s

2

3 s

2

=T

x16

4.5 1.5 1.5 4.5 4.5 1.5 1.5 4.5 4.5 1.5 1.5 4.5 4.5 1.5 1.5 4.5

y16

T

3 s

2

3 s

2

3 s

2

3 s

2

s

2

s

2

s

2

s

2

s

2

s

2

s

2

s

2

3 s

2

3 s

2

3 s

2

3 s

2

=T

y16

4.5 4.5 4.5 4.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 4.5 4.5 4.5 4.5


10/11

Pile Group P17

X17

+4 s2 2 E Y17

+3 s 2 E

=X17

13 ft =Y17

11.5 ft

P17

x17 T

s2 s2 2 s2 s0 2 s2 s2 s2 2 s2 s0 2 s2 s2 s2 2 s2 s0 2 s2 s2 s2

=T

x17

2.625 2.625 5.25 0 5.25 2.625 2.625 5.25 0 5.25 ft

y17

T

3 s

2

3 s

2s s s

s

2

s

2s0 s0 s0

s

2

s

2s s s

3 s

2

3 s

2

=T

y17

4.5 4.5 3 3 3 1.5 1.5 0 0 0 1.5 1.5 3 3 3 4.5 4.5 ft

Pile Group P18

X18

+4 s2 2 E Y18

+3 s 2 E

=X18

13 ft =Y18

11.5 ft

P18

x18 T

2 s2 s0 2 s2 s2 s2 2 s2 s0 2 s2 s2 s2 2 s2 s0 2 s2 s2 s2 2 s2 s0 2 s2

=T

x 18 5.25 0 5.25 2.625 2.625 5.25 0 5.25 2.625 2.625 5.25 0 5.25 2.625 ft

y18

T

3 s

2

3 s

2

3 s

2s s

s

2

s

2

s

2s0 s0

s

2

s

2

s

2s s

3 s

2

3 s

2

3 s

2

=T

y18

4.5 4.5 4.5 3 3 1.5 1.5 1.5 0 0 1.5 1.5 1.5 3 3 4.5 4.5 4.5 ft


11/11

Pile Group P19

X19

2 ++s s2 E Y19

+3 s 2 E

=X19

13.75 ft =Y19

11.5 ft

P19

x19 T

s4 s2 s2 s4 s0 s4 s2 s2 s4 s0 s4 s2 s2 s4 s0 s4 s2 s2 s4

=T

x19

5.625 2.625 2.625 5.625 0 5.625 2.625 2.625 5.625 0 5.625 ft

y19

T

3 s

2 3 s

2 3 s

2 3 s

2s

s

2

s

2

s

2

s

2s0

s

2 s

2 s

2 s

2 s 3

s

2 3 s

2 3 s

2 3 s

2

=T

y19

4.5 4.5 4.5 4.5 3 1.5 1.5 1.5 1.5 0 1.5 1.5 1.5 1.5 3 4.5 4.5 4.5 4.5 ft

Pile Group P20

X20

+4 s 2 E Y20

+3 s 2 E

=X20

14.5 ft =Y20

11.5 ft

P20

x20 T

2 s s s 0 s 2 s 2 s s s 0 s 2 s 2 s s s 0 s 2 s 2 s s s 0 s 2 s

=T

x20

6 3 0 3 6 6 3 0 3 6 6 3 0 3 6 6 3 0 3 6 ft

y20

3 s

2

3 s

2

3 s

2

3 s

2

3 s

2

s

2

s

2

s

2

s

2

s

2

s

2

s

2

s

2

s

2

s

2

3 s

2

3 s

2

3 s

2

3 s

2

3

2

=T

y20

4.5 4.5 4.5 4.5 4.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 4.5 4.5 4.5 4.5

Pile Cap Configurations

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