Geotechnical Engineering Circular No. 9 Design, Analysis, and Testing of Laterally Loaded Deep Foundations that Support Transportation Facilities
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Soldier Rev B
| 1.0 DESCRIPTION This work shall consist of furnishing all design, materials, labor, tools, equipment, services, and incidentals necessary to perform the testing of piles under lateral loads in accordance with the Contract Documents and this Specification. (Commentary: It is assumed that there is a specification for the installation of the foundation elements accordingly, pile construction is not addressed herein. Similarly, there maybe a separate test specification for axial load testing that should be coordinated with this section. The following requirements relate to the lateral load tests but should be included in the foundation construction specification • All lateral load testing should be completed and the testing results evaluated by the Engineer prior to installation of production foundation elements, unless authorized by the Engineer. • The same installation procedures should be used for production foundation elements as for the test foundation elements. Any changes in the procedures must be evaluated by the Engineer for potential impacts on lateral load capacity. The Engineer may require additional lateral load tests to evaluate the impact of changes to installation procedures, at no cost to the owner. The scope of work could also include subsurface investigation borings at the load test sites if design- phase borings are not available at these locations. Site-specific borings are needed to interpret the load test results and to correlate lateral resistance to the soil/rock conditions at the test site. 256 Terminology: 1. The word pile is used here and throughout, but the specification should reference the actual foundation type used (driven pile, drilled shafts, micropiles, or CFA piles, as applicable. 2. The term Contract Documents is used throughout. This term is intended to cover the requirements of the contract such as plans, specifications, special provisions, technical provisions, etc. This term may be replaced by Plans and Specifications Contract Drawings and Specifications or similar terms as appropriate. 3. The term Engineer is used throughout. This term maybe adjusted depending on the contract type. For a design-bid-build contract, the Engineer is typically the Construction Manager and, indirectly, the Designer. Fora design-build contract, the Engineer is typically the Engineer of Record) 1.1 Related Specifications (Commentary: Engineer to indicate related specification sections here. At a minimum, this will likely include specifications that govern the installation of the foundation elements (driven pile, drilled shaft, CFA, or micropile specification section, the ASTM standard for lateral load tests, and the design specifications for the project. Additional sections should be included as appropriate) 1.1.1 Specification Sections Insert reference to foundation construction specifications and axial load testing, if required) 1.1.2 Reference Standards ASTM D Standard Test Method for Deep Foundations Under Lateral Load AASHTO LRFD Bridge Design Specifications, Seventh Edition, US. Customary Units, 2014. (Commentary: Other standards, such as the AASHTO Bridge Construction Specifications, DOT Specifications, and reference documents can be added here as applicable) 1.2 Submittals 1.2.1 Qualifications At least 45 days prior to the start of testing, the load testing contractor shall submit proof of qualifications and experience. The load testing Contractor shall be experienced in the performance of lateral load testing of piles and shall have successfully performed at least 5 lateral load tests in the last 5 years of similar test type as those required in this Contract. Submit a project reference list including a project name, location, description of number and type of test piles, maximum test load, test dates, and Owner or client’s contact name and phone number. Submit an example lateral load test report from one of the projects. Submit a personnel list that identifies the load test designer (if applicable) and the supervising engineer assigned to the project. Include a summary of each individual’s experience sufficient for the Engineer to determine the required qualifications are met. Both individuals should be licensed engineers in the state in which the project is located. |