VIDEO INSPECTION AND LASER PROFILING IN FLORIDA. AASHTO SOC Conference Larry Ritchie, FDOT August 14, 2013

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1 VIDEO INSPECTION AND LASER PROFILING IN FLORIDA AASHTO SOC Conference Larry Ritchie, FDOT August 14, 2013

2 PIPE INSPECTION Over the last 5 years, the Department has spent approximately 175 million dollars on drainage pipe and over 9.5 million dollars on pipe repair. With costs like these, it is extremely important to insure that pipe is installed correctly, inspected thoroughly and replaced or repaired correctly when warranted.

3 PIPE INSPECTION FDOT is an optional pipe materials state. We allow the use of both flexible and rigid pipe and have specific performance criteria for each pipe material. The Department strives for problem-free installation of drainage systems on all DOT construction projects. Specifications for installing pipe and the Final Pipe Inspection Report are tools used to achieve this goal

4 DRAINAGE INSTALLATION

5 PIPE INSPECTION Pipe Inspection allows the contractor and the Department to obtain a first hand account of the condition of culvert pipe installed on a construction project. Provides the Department with some assurance that the Drainage system was installed correctly and is functioning properly.

6 PIPE INSPECTION

7 PIPE INSPECTION

8 PIPE INSPECTION

9 PIPE INSPECTION

10 WHAT NEEDS TO BE INSPECTED?? For pipe 48 inches or less in diameter, provide the Engineer a video DVD and report using low barrel distortion video equipment with laser profile technology, non-contact video micrometer and associated software that provides: 1. Actual recorded length and width measurements of all cracks within the pipe. 2. Actual recorded separation measurement of all pipe joints. 3. Pipe ovality report 4. Deflection measurements and graphical diameter analysis report in terms of x and y axis 5. Flat analysis report 6. Representative diameter of the pipe 7. Pipe deformation measurements, leaks, debris, or other damage or defects. 8. Deviation in pipe line and grade, joint gaps and joint misalignment.

11 WHAT IS THIS STUFF???

12 INSPECTION EQUIPMENT Laser Profiling and Video Inspection Equipment consists of 4 main components: 1. Crawler- Moves the equipment through the pipeline. 2. Closed Circuit TV camera- records images and sends data back to a computer 3. Laser Profiler provides numerous measurements of a pipe s internal surface. 4. Software interprets data and generates an inspection report.

13 CRAWLER These machines come with several different wheel sets or tracks that must be changed out to accommodate the size and type of pipe being inspected.

14 CCTV The Closed Circuit Television (CCTV) records all of the images for the pipe inspections. This is the equipment that pans and tilts around the inside of a pipe for observations and measurements.

15 LASER PROFILER There are currently two different types of technology used for profiling pipe in the Florida. Rotating head laser profiler Continuous ring laser profiler

16 ROTATING PROFILER The rotating head profiler has two laser diodes built into the CCTV camera head. The diodes take continual measurements while the camera head rotates 360 at a set speed while the crawler is pulled back through the pipe. DIODES

17 CONTINUOUS RING PROFILER The continuous ring profiler projects a visible laser beam onto the internal surface of the pipe. The beam is centered in the field of view of the CCTV camera and the camera records the image of the beam as it is pulled back through the pipe.

18 CONTINUOUS RING PROFILER

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21 PIPE OVALITY REPORT

22 PIPE OVALITY REPORT

23 FLAT GRAPH ANALYSIS

24 Common Pipe Issues Seen During Inspection Over the past couple of years, the majority of pipe issues reviewed and repaired have been: Leaking Joints Joint Gaps Deflection Cracking

25 PIPE INSPECTION Overall, the quality of the video inspection documentation has improved greatly. However, there are still several areas of concern: 1. Camera Speed during the video inspection 2. Failure to dewater prior to inspection 3. Partial inspection or completely missing joints 4. Only inspecting joints and not evaluating the entire pipe 5. Not measuring all of the defects observed 6. Poor picture quality due to lighting, video, etc. 7. Wrong file format that make files hard to open

26 WHAT S NEXT?? FDOT is working with the University of Florida on a research project to provide operator certification to all contractors performing pipe inspection for the Department. Contractors will have to pass a field test to show that they know how to operate their equipment correctly and can meet FDOT s specifications.

27 WHAT S NEXT?? The Department s test track has been assembled and we just finished preliminary evaluations. We are now scheduling test runs with different laser profiling equipment to verify that different measurement technologies will provide consistent results.

28 AND FINALLY.. 12 Alligator found in the storm sewer during pipe desilting operations in Okeechobee on SR 70

29 QUESTIONS???