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APPENDIX 3D
MODEL SPECIFICATION – HYDRAULICALLY-DRIVEN PUSH PIER SYSTEMS
Chapter 3
Hydraulically-Driven Push Piers
8.1.6 Manufacturer’s published allowable system capacities for the pier assemblies, including
load transfer devices.
8.1.7 Calculated mechanical and theoretical geotechnical capacity of the proposed piers.
8.1.8 Minimum final drive and lock-off force requirements.
8.1.9 Structural lift requirements, if applicable
8.1.10 Minimum and/or maximum embedment lengths or other site specific embedment depth
requirements as may be appropriate for the site soil profiles.
8.1.11 Pier location tolerance requirements.
8.1.12 Load test procedures and failure criteria, if applicable.
8.1.13 Copies of certified calibration reports for load test measuring equipment to be used
on the project, if applicable. The calibrations shall have been performed within one
year of the proposed starting date for push pier installation or as recommended by the
equipment manufacturer.
8.1.14 Provide proof of insurance coverage as stated in the general specifications and/or
contract.
9
PIER INSTALLATION
9.1 Installing Contractor shall furnish and install all push piers per the project Plans and approved
pier design documentation. In the event of conflict between the project Plans and the approved
pier design documentation, the Installing Contractor shall not begin construction on any affected
items until such conflict has been resolved.
9.2 The Installing Contractor shall conduct their construction operations in a manner to insure the
safety of persons and property in the vicinity of the work. The Installing Contractor’s personnel
shall comply with safety procedures in accordance with OSHA standards and any established
project safety plan.
9.3 The Owner shall request marking of underground utilities by an underground utility location
service as required by law, and the Installing Contractor shall avoid contact with all marked
underground facilities.
9.4 The portion of the construction site occupied by the Installing Contractor, his equipment and his
material stockpiles shall be kept reasonably clean and orderly.
9.5 Installation of push piers may be observed by representatives of the Owner for quality assurance
purposes. The Installing Contractor shall give the Owner at least 24 hours’ notice prior to the
pier installation operations.
9.6 The push pier installation technique shall be such that it is consistent with the geotechnical,
logistical, environmental, and load carrying conditions of the project. The push pier shall be
positioned at the appropriate site survey location as determined from the plan drawings.
9.7 Push pier installation procedures specified in the manufacturer’s technical literature and/or code
agency approved evaluation report shall be followed.