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NCHRP Synthesis 381: Falling Weight Deflectometer Usage (2008)
National Cooperative Highway Research Program Synthesis Program (NCHRPSYN)

Citation Manager

Alavi, Sirous, Tavares, Michael P, LeCates, Jeffrey F, Transportation Research Board. "Part 5: GeneraL FWD Testing Procedures." NCHRP Synthesis 381: Falling Weight Deflectometer Usage. Washington, DC: The National Academies Press, 2008.

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Page
80
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Page
80
Front Matter (R1-R10)
Summary (1-2)
Purpose (3-3)
Scope (4-4)
Definitions (5-6)
Falling Weight Deflectometer Types and Configurations (7-7)
Falling Weight Deflectometer Manufacturers (8-9)
Maintenance Practices (10-11)
Calibration Procedures (12-12)
Calibration Requirements (13-13)
Calibration Centers (14-14)
Data Collection Guidelines (15-19)
Data Storage (20-20)
Data Analysis Methods (21-21)
Data Analysis Software (22-22)
Analysis Output File Types (23-23)
Qualifications (24-24)
Additional Training Opportunities (25-26)
Outsourcing Requirements (27-28)
Case 2. Pavement Rehabilitation and Overlay (29-29)
Case 4. Pavement Management Systems (30-30)
Case 7. Spring Load Restrictions (31-31)
Case 11. Project Acceptance and Evaluation (32-32)
Case 12. Conversion of Data from Other Nondestructive Testing Devices (33-33)
Case 13. International Practices (34-34)
Portable Falling Weight Deflectometer (35-35)
Mechanistic-Empirical Pavement Design (36-36)
CHAPTER TEN - Conclusions (37-38)
References (39-42)
Bibliography (43-43)
Abbreviations (44-44)
APPENDIX A - Survey Questionnaire (45-67)
Part 1: Background Information (68-68)
Part 2: FWD Equipment Types (69-69)
Part 3: FWD Equipment Maintenance (70-73)
Part 4: FWD Equipment Calibration (74-79)
Part 5: GeneraL FWD Testing Procedures (80-83)
Part 6: FWD Field Testing - Flexible Pavements (84-92)
Part 7: FWD Field Testing - Rigid Pavements (93-102)
Part 8: FWD Computers (103-104)
Part 9: Data Analysis (105-107)
Part 10: Data Management and Storage (108-109)
Part 11: Personnel Training (110-115)
Part 12: FWD Program Administration - Part 1 of 2 (116-117)
Part 13: FWD Program Administration - Part 2 of 2 (118-126)

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OCR for page 80
80 Question 21: Would your agency sponsor such a calibration facility? FIGURE B17 Survey response to Question 21: "Would your agency sponsor such a calibration facility?" Part 5: General FWD Testing Procedures Question 22: How many crew members do you use to operate an FWD unit on a typical project? FIGURE B18 Survey response to Question 22: "How many crew members do you use to operate an FWD unit on a typical project?"

OCR for page 81
81 Question 23: What facilities do you test with the FWD? (Check all that apply.) FIGURE B19 Survey response to Question 23: "What facilities do you test with the FWD?" (Check all that apply.) Question 24: What is the average lead time from the date you receive a request to the date of testing? FIGURE B20 Survey response to Question 24: "What is the average lead time from the date you receive a request to the date of testing?"

OCR for page 82
82 Question 25: What is the average turnaround time from the date of testing to the date the results are submitted to your customer? FIGURE B21 Survey response to Question 25: "What is the average turn-around time from the date of testing to the date the results are submitted to your customer?" Question 26: Is there an equipment inspection checklist prior to testing? FIGURE B22 Survey response to Question 26: "Is there an equipment inspection checklist prior to testing?"

OCR for page 83
83 Question 27: Is there a written warm-up procedure prior to testing? FIGURE B23 Survey response to Question 27: "Is there a written warm-up procedure prior to testing?" Question 28: Who provides traffic control? FIGURE B24 Survey response to Question 28: "Who provides traffic control?"