for Highway Construction Page 397 of 71 5 SECTION 521 – DYNAMIC PILE TESTING AND CAPWAP ANALYSIS
521.01 Description.
Retain a pre- approved consultant as specified in 521.03.B.5 to perform dynamic pile testing and signal matching analyses using the case pile wave analysis program (CAPWAP) program as specified or as directed. The Engineer will use this information to confirm or modify pile- driving criteria developed by the wave equation analysis for the planned hammer- pile-soil combination.
521.02 Materials.
Provide equipment for dynamic pile testing in accordance with the following: High Strain Dynamic Testing of Piles ........................................................................ ASTM D4945 -12 Provide access to the pile in the leads with a personnel lift or basket that can be raised to the pile top or by other safe methods to attach instrumentation. For access to the test pile on the ground, provide at least 3 feet of clear access to opposite faces of the pile to allow drilling holes for instrumentation. Provide sufficient time for installing in strumentation on the pile in the leads. Short interruptions during driving may be necessary due to instrument malfunction.
521.03 Construction Requirements – Testing.
A.General. Perform dynamic pile testing on each test pile as specified or as directed. If the required bearing capacity is not achieved during initial driving, restrike the test pile as directed. Perform dynamic pile testing during the pile r estrike. Perform a CAPWAP analysis on the pile restrike data, or as directed. A dynamic pile test and CAPWAP analysis will be required for each pile restrike performed.
B.Testing and Reporting. The consultant engineer will operate the pile driving analyzer and monitor pile driving in real time on- site or remotely, from the beginning to the end, or as directed. In addition, the consultant will continuously monitor the test piles for potential damage and for the occurrence of non -axial driving, and inform the Engineer and the Contractor immediately if there is any indication that pile damage has occurred during driving. The consultant will submit preliminary test results to the Engineer and the Contractor within 24 hours of t he dynamic testing completion for each test pile and before leaving the project site. The consultant will include the following information with the preliminary test results:
1.Energy transfer from the pile- driving hammer to the pile (EMX or “Enthru”) and rated transfer efficiency.
2.Peak force (FMX) and stress (CSX) at the pile dynamic analyzer (PDA) sensor location near the pile top.
3.Ultimate pile bearing capacity computed in the field with a suitable case method calculation and preliminary test results using CAPWAP analysis.
4.Graphs showing RMX, BLC, CSI, STK, and FMX by depth of penetration. for Highway Construction Page 398 of 71 5 5. The hammer stroke and blow count when the CAPWAP analysis is performed will also be included. The Contractor will submit a final CAPWAP analysis report to the Engineer that is sealed and signed by an Idaho licensed professional engineer within 2 working days after the test(s) completion for each project site visit. The report will contain the required information and the CAPWAP analysis. The report must include t he project key number, and information on the test pile, soil conditions, pile driving hammer, field test results (including the pile hammer stroke height at the hammer blow used for the CAPWAP analysis and the interval pile hammer blow count), and CAPWAP analysis with any comments that the consultant may have on the results. Before submitting the report, the consultant will send the Engineer and the Contractor the CAPWAP analysis resul ts by telephone, fax, or email as soon as possible. The Engineer may request more than 1 CAPWAP analysis per dynamic pile test. Schedule additional site visits for dynamic pile testing as requested by the Engineer. Retain only the following Department preapproved consultants for performing the dynamic pile t esting and CAPWAP analyses: Table 521.03- 1 - Preapproved Consultant Information Company Address Phone number PDA Engineering PO Box 25065 Salt Lake City, UT 84125 801-908-7664 GRL Engineers, Inc. 23015 SE 270th St Maple Valley, WA 98038 425-381-9690 Geodesign, Inc. 15575 SW Sequoia Pkwy, Ste 100 Portland, OR 97224 503-968-8787 SK Geotechnical 2611 Gabel Rd Billings, MT 59108 406-652-3930 Intermountain GeoEnvironmental Services (IGES) , Inc. 4153 Commerce Dr Salt Lake City, UT 84107 801-270-9400 for Highway Construction Page 399 of 71 5 Table 521.03- 1 - Preapproved Consultant Information Company Address Phone number Strata 8653 W Hackamore Dr Boise, ID 83709 2815 Garrett Way, Ste C Pocatello, ID 83201 W 280 Prairie Ave, Ste 2 Coeur d’Alene, ID 83815 208-376-8200 208-237-3400 208-772-2428 Lachel & Associates 16300 Christensen Rd, Ste 304 Tukwila, WA 98188 206-244-3593 Gerhart Cole Inc. 668 E. 12225 S, Ste 203 Draper, UT 84020 801-849-0055 Robert Miner Dynamic Testing, Inc. PO Box 340 2288 Colchester Dr East Manchester WA 98353 360-871-5480
521.04 Method of Measurement.
The Engineer will measure acceptably completed work by each test and each CAPWAP analysis. 521.05 Basis of Payment . The Department will pay for accepted quantities at the contract unit price as follows: Pay It em Pay Unit Dynamic Pile Testing ............................................................................. Each CAPWAP Analysis ................................................................................. Each Standby time for consultants, contractor personnel, or equipment due to scheduling errors, instrument malfunction, or equipment breakdowns is incidental . for Highway Construction Page 400 of 71 5 SECTION 522 – CONTROLLED DENSITY FILL (CDF)
522.01 Description.
Furnish all labor, materials, equipment, and incidentals necessary to provide, load, haul, place, and consolidate the controlled density fill (CDF) to the lines and grades specified.
522.02 Materials.
Provide CDF usin g concrete aggregates, fly ash, cement, and water. Guideline mix proportions are presented below: Portland Cement ................................................................................. ASTM C15 0 or AASHTO M 85 Fly Ash .................................................................................................................. Class F or Class C Aggregates ........................................................................................................................ ASTM C33 Water ...................................................................................................................................... Potable Admixtures ..............................................................................AASHTO M 194, ASTM C260 or C494 Ensure CDF mixture meets the acceptable properties in Table 522.02- 1. Table 522.02-1 – CDF Mixture P roperties CDF Mix Property Maximum gallons of mixing water per cubic yard 50 Pounds of cement per cubic yard 50 ± 5 Pounds of fly ash per cubic yard 250 ± 10 Pounds of dry aggregate per cubic yard (an assumed specific gravity of 2.67) 3,200 ± 100 Slump, inches 6 - 8 Submit the CDF mix design with the backup data for approval. Do not install CDF until after the CDF mix design has been approved. Provide a mix design from an approved laboratory.
522.03 Construction Requirements.
Batch, transport, and place CDF as specified in 502.
522.04 Method of Measurement.
The Engineer will measure acceptably completed work by the cubic yard. Measurement will be based upon batch delivery tickets submitted at the time of placement .
522.05 Basis of Payment .
The Department will pay for acceptable quantities at the contract unit price as follows :
Source: Idaho Standard Specifications for Highway Construction, 2023 Edition. Pages 433–435 of 768.