Pipe Inspection Reports and Deflection Analysis Summary
The provided content includes detailed reports on post-installation pipe inspections, as well as a summary of deflection analysis conducted for a project in Fayette County. The reports cover aspects such as inspection dates, contractor information, pipe materials, lengths, diameters, and any observed issues like joint separations. The included images offer additional insight into the inspection and reporting processes.
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Presentation Transcript
Post Installation Pipe Inspection Prepared for KYTC Section Engineers Meeting March 5, 2013 By Kean H. Ashurst Jr., P.E. Kentucky Transportation Center
Overview More structured and standardized reporting format Different technologies for laser deflection testing What to look out for Certification Program
Video Inspection Summary Report Project Information Item #: 1-234.56 Fayette Inspector Information Project #: FD01 234 567 890-012 District: D7 Date: 12/15/11 County: Route: US1 Inspecting Contractor: Operator Name: John Doe Operator Name: Random Pipe Inspections Inc. Operator Name: Operator Name: Inspecting Contractor Signature: Date: Pipe Information Cracks > 0.1" N/A N/A N/A N/A Joint Beginning Station 174+00.00 215.00 LT 200+02.30-399.28 LT 228+85.59 RT 227+35.00 RT Ending Station 174+00.00-407.79 LT 200+65.58 452.79 LT 228+84.29 LT 228+85.59 RT Dia. 24 30 18 15 Material HDPE HDPE HDPE HDPE Length 169.1 82.2 41.1 147.3 Type Pvmnt SD SD CD SD Pages 2 to 8 9 10 11 Separations Y N N N Other Y N N N N N Y Y
Video Inspection Report - Individual Pipe Project Information Item #: 1-234.56 Project #: FD01 234 567 890-012 District: D7 Date: 12/15/11 County: Fayette Route: US1 Inspector Information Inspecting Contractor: Random Pipe Inspections Inc. Operator Name: John Doe Operator Name: Operator Name: Operator Name: Pipe Information 11/09/11 Begin Sta. 174+00.00 215.00 LT HDPE Pipe Length Backfill Material Under Pavement No 174+00.00-407.79 LT Inspection Date 12/14/11 Installation Date Pipe Diameter 24 in. Pipe Application Type Lining Type Inspection Information Location 0.0 ft. Begin Video Inspection at Junction 2.7 ft. 22.2 ft. 28.4 ft. Joint Separation > 1.0 inch (1.21 ) 30.4 ft. 51.4 ft. 61.1 ft. 70.0 ft. Joint Separation > 1.0 inch (1.15 ) 77.7 ft. 91.3 ft. Joint Separation > 1.0 inch (1.42 ) 106.5 ft. 111.7 ft. Joint Separation > 1.0 inch (1.59 ) 123.8 ft. 136.6 ft. End Sta. Inspected Length Embankment Height Pipe Material Storm Drain 173.7 ft. 173.7 ft. Native Soil Backfill 7.5 ft. N/A Inspection Information Continued Comment End Inspection at Outlet Headwall Comment Page Location 3 4 4 4 5 5 5 6 6 6 7 7 7 8 Page 8 173.7 ft. Sag Sag Sag Sag Sag Sag Sag Sag Sag
Deflection Inspection Summary Report Project Information Item #: 1-234.56 Project #: FD01 234 567 890-012 District: D7 Date: 12/15/11 County: Fayette Route: US1 Inspector Information Inspecting Contractor: Operator Name: John Doe Operator Name: Random Pipe Inspections Inc. Operator Name: Operator Name: Signature: Date: Pipe Information Dia Material 24 30 18 15 Beginning Station 174+00.00-407.79 LT 200+65.58 452.79 LT 228+84.29 LT 228+85.59 RT Ending Station 174+00.00 215.00 LT 200+02.30-399.28 LT 228+85.59 RT 227+35.00 RT Date 12/14/11 12/14/11 12/14/11 12/14/11 Length 169.1 82.2 41.1 147.3 Type Pvmnt SD SD CD SD Pages 2 to 5 6 7 8 to 11 > 5% Y N N Y > 7.5% N Y > 10% N HDPE HDPE HDPE HDPE N N Y Y
Deflection Inspection Report - Individual Pipe Project Information Item #: 1-234.56 Project #: FD01 234 567 890-012 District: D7 Date: 12/15/11 County: Fayette Route: US1 Inspector Information Inspecting Contractor: Random Pipe Inspections Inc. Operator Name: John Doe Operator Name: Operator Name: Operator Name: 11/09/11 Begin Sta. 174+00.00-407.79 LT HDPE Pipe Length Backfill Material Under Pavement No 174+00.00 215.00 LT Inspection Date 12/14/11 Installation Date Pipe Diameter 24 in. Pipe Application Type Lining Type Inspection Information Location 169.1 ft. Begin Laser Inspection 150.1 ft. 129.8 ft. 109.6 ft. 89.1 ft. 77.3 ft. Begin deflection > 5% 74.2 ft. End deflection > 5% 68.9 ft. 48.6 ft. 28.4 ft. 16.0 ft. Begin deflection > 5% 13.6 ft. End deflection > 5% 10.2 ft. End Laser Inspection 6.2 ft. End Sta. Inspected Length Embankment Height Video calibration bar Inspection Information Continued Comment End of Pipe Pipe Material Storm Drain 169.1 ft. 159.7 ft. Native Soil Backfill Calibration Method 7.5 ft. N/A Comment Attachment Page Location YES 4 YES 5 Attachment Page 0.0 ft. Joint Joint Joint Joint Joint Joint Joint Joint
Different Technologies Video inspection Laser inspection 2 different technologies in use in KY Rausch (spinning laser head) Cues (laser ring) Both use laser light to measure off a picture Not time of flight laser measuring
What to look out for All deflection measurements should be based off of AASHTO nominal diameter The last 5 to 12 feet of all laser inspections are always missing Rausch unit is consistent Cues unit will vary Maximum scanning speed should not exceed 30 ft/min
What to look out for Rausch (spinning laser head) As pull back speed increases the gap between identical points increases Rausch - Single point scans Whole run scan vs. single point scan Single point scan is more accurate Rausch - Unit has to be centered in pipe
What to look out for Calibration is critical for the Cues system Pipe is racked Can control rather than horizontal/vertical Cues has an ovality report Rausch has a wireframe diagram If you can see deflections then most likely the pipe is over deflected
Rausch Single Point Scan Footage Horizontal Deviation Vertical Deviation Reference Ring Scanned Profile Width Average diameter for this slice Nominal Diameter
Rausch Wireframe Diagram Color Deflection Limits Red/Black > 5.7% Yellow/Brown >2.1% Diameter, deformation & deflection % Distance in pipe
Certification Program Post installation pipe certification program Test track 3 materials (RCP, CMP, HDPE) Distressed pipe Show they can complete form Adequately identify distresses and deflections Operator certified for their equipment
Thank You Kean H. Ashurst Jr., P.E. Kentucky Transportation Center University of Kentucky 176 Raymond Building Lexington, KY 40506 (859) 257-7319 kean.ashurst@uky.edu
