PILE CHECK

A NEW DYNAMIC PILE TESTING SYSTEM

GEORGE GOBLEGOBLE PILE TEST

NEW EQUIPMENT DEVELOPMENT DEVELOPMENT GOALS

• Reduce the Cost of Dynamic Pile Testing

• Obtain A Capacity Prediction for Every Hammer Blow

• Make the Equipment Easy to Operate

AVAILABLE TOOLS

• Well Developed Fundamental Technology

• Greatly Increased Computer Capabilities

GENERAL INPUT DATANOT REQUIRED FOR ANALYSIS

• Project Name• Date and Time – Automatic• Pile Number• Hammer Type• Specific Hammer

REQUIRED INPUT DATASTEEL

• H- Section• HP 10 x 42

• HP 10 x 57

• etc.

• Pipe Section• Diameter

• Wall Thickness

REQUIRED INPUT DATACONCRETE

• Square• Side Dimension

• Cylinder• Diameter• Wall Thickness

ADDITIONAL REQUIRED DATA

• Pile Length• Pile Length Below Gages• Yield Stress for Steel • Permitted Compression Stress• Concrete Strength (ksi)• Permitted Tension Strength (ksi)• Effective Prestress

EXAMPLE MEASUREMENT

Force

Velocity

EXAMPLETEST

RESULTS

Salt Lake City TestIHC S-70Hammer

Throttled Back

12-3/4 Pipe3/8 inch Wall

Blow #

Capacity (kips)

Force LCC

Velocity LCC

Match Quality Indicator

Maximum Comp. Stress

Energy (kip*ft)

1 318.0 0.9959 0.9948 99.13 28.26 20.00

2 291.6 0.9935 0.9928 98.66 27.59 20.32

3 276.5 0.9955 0.9955 99.10 24.99 17.95

4 280.4 0.9947 0.9941 98.91 24.75 15.88

5 322.0 0.9947 0.9930 98.86 25.42 16.14

6 266.5 0.9949 0.9943 98.95 25.51 16.56

7 255.8 0.9961 0.9959 99.21 24.55 16.83

8 263.5 0.9938 0.9946 98.80 24.23 15.71

9 254.5 0.9957 0.9945 99.08 25.08 16.72

10 268.3 0.9950 0.9957 99.03 25.88 16.39

11 273.3 0.9964 0.9953 99.23 24.93 16.63

12 272.7 0.9959 0.9956 99.17 25.13 16.27

13 273.0 0.9957 0.9951 99.10 24.81 16.58

14 279.0 0.9941 0.9927 98.75 25.06 15.69

15 262.4 0.9957 0.9956 99.14 25.42 16.85

16 148.2 0.9972 0.9966 99.41 12.76 3.93