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APPENDIX 2F
MODEL SPECIFICATIONS
Chapter 2
Helical Foundation Systems
9
PRE-CONSTRUCTION SUBMITTALS
9.1 Within 2 weeks of receiving the contract award, the Installing Contractor and/or helical Soil Nail
Designer shall submit the following helical soil nail design documentation:
9.1.1 Certification from the Soil Nail Designer that the proposed soil nails meet the requirements
of this specification.
9.1.2 Qualifications of the Installing Contractor and Soil Nail Designer per Section 8.
9.1.3 Product designations for helical soil nail lead and extension sections and all ancillary
products to be supplied at each helical soil nail location.
9.1.4 Individual soil nail nominal loads, factors of safety, LRFD load and resistance factors
and required ultimate torque-correlated capacities, where applicable.
9.1.5 Individual soil nail loading or post-tensioning requirements (if any).
9.1.6 Manufacturer’s published allowable system capacities for the proposed soil nail
assemblies, including load transfer devices, if any.
9.1.7 Calculated mechanical and theoretical geotechnical capacities including unit bond
stress of the proposed soil nails.
9.1.8 Minimum helical soil nail termination torque requirements.
9.1.9 Maximum estimated installation torque and allowable installation torque rating of soil
nail.
9.1.10 Minimum and/or maximum embedment lengths or other site specific embedment length
or depth requirements as may be appropriate for the site soil profiles.
9.1.11 Inclination angle and location tolerance requirements.
9.1.12 Load test procedures and failure criteria, if applicable.
9.1.13 Copies of certified calibration reports for torque measuring equipment and load test
measuring equipment to be used on the project. The calibrations shall have been
performed within one year of the proposed helical soil nail installation starting date or
as recommended by the equipment manufacturer.
9.1.14 Provide proof of insurance coverage as stated in the general specifications and/or
contract.
10
PLACEMENT REQUIREMENTS
10.1 Helical soil nails shall be installed within 3 inches of the indicated plan location.
10.2 Helical soil nail shaft alignment shall be within 2 degrees of the inclination angle shown on the
Plans.
10.3 Soil nail wall bearing plate edge distance from face of wall shall be within 1 inch of the design
placement as shown on the Plans.