Copyright 2011 – Magnum Piering, Inc.

Helical Pile Load Testing

Howard A. Perko, Ph.D., P.E.Magnum Geo-Solutions, LLC

Copyright 2011 – Magnum Piering, Inc., All Rights reserved. May be distributed

and printed by express written permission of the author only.

MAGNUM Informational Bulletin ISO-MHP5-11A

Copyright 2011 – Magnum Piering, Inc.

• Compression Load Test• Tension Load Test• Load Test Interpretation• Contact Information

Outline

Copyright 2011 – Magnum Piering, Inc.

Compression Load Tests

ASTM D1143

Demonstration of a compression load test on a helical pile.

Copyright 2011 – Magnum Piering, Inc.

ASTM D3689

Tension Load Tests

Demonstration of a tension load test on a helical anchor .

Copyright 2011 – Magnum Piering, Inc.

Comparison between

Standard Davisson

(1972)

and

Modified Davisson

(ICC-ES, 2007)

Load Test Interpretation

0

5

10

15

20

25

30

35

40

0 0.5 1 1.5 2 2.5

Displacement (in)

Ap

plie

d L

oad

(K

ips)

Load Limit= 18 kips [80 kN]Standard

Load Limit= 32 kips [142 kN]Modified

Note: 1 kip= 4.45 kN, 1 in= 25.4 mm

Copyright 2011 – Magnum Piering, Inc.

Contact InformationMagnum Piering, Inc.

www.magnumpiering.com800-822-PIER (7437)

6082 Schumacher Park DriveWest Chester, OH 45069