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APPENDIX 2F
MODEL SPECIFICATIONS
Chapter 2
Helical Foundation Systems
14
FIELD COMPRESSION LOAD TESTING
14.1 If field compression load testing is required, the Installing Contractor shall furnish all labor,
equipment and pre-production helical piles necessary to accomplish the testing as shown in
the approved pile design documentation. Installing Contractor shall apply the specified loads
for the specified durations and record the specified data, for the specified number of piles.
No deviations from the test plan(s) will be allowed without explicit approval in writing from the
Owner. Pile testing shall be in general accordance with the ASTM D1143 quick test method and
the following criteria:
14.1.1 Failure criteria shall be in accordance with AC358 and is when plunging occurs or when
the net deflection exceeds 10% of the average helix plate diameter, whichever occurs
first.
14.1.2 An alignment load equal to 5% of the anticipated failure load or maximum anticipated
test load may be applied prior to the start of the test to take out slack in the load test
frame.
14.1.3 Loading increments shall be performed at 5% of the anticipated failure load or maximum
anticipated test load with a minimum hold time of 4 minutes at each increment.
14.1.4 Upon completion of the maximum test load hold increment, the pile shall be unloaded
in 5 to 10 even increments with minimum hold times of 4 minutes at each increment.
14.2 Installing Contractor shall provide the Owner copies of raw field test data within 24 hours after
the completion of each load test. Formal test reports shall be submitted within 30 days following
test completion. Formal test reports shall include the following information:
14.2.1 Name of project and Installing Contractor’s representative(s) present during load testing.
14.2.2 Name of manufacturer’s representative(s) present during load testing, if any.
14.2.3 Name of third party test agency and personnel present during load testing, if any.
14.2.4 Date, time, duration and type of the load test.
14.2.5 Unique test identifier and map showing the test pile location.
14.2.6 Pile model and installation information including shaft type, helix configuration, lead and
extension section quantities and lengths, final pile tip depth, installation date, total test
pile length and final termination torque.
14.2.7 Calibration records for applicable pile installation and test equipment.
14.2.8 Tabulated test results including cumulative pile head movement, loading increments
and hold times.
14.2.9 Plots showing load versus deflection for each loading/unloading interval.
15
CLEANUP
15.1 Within one week of completion of the work, the Installing Contractor shall remove any and all
material, equipment, tools, debris or other items belonging to the Installing Contractor or used
under the Installing Contractor’s direction.
