Retrospective Evaluation of Cured-in-Place Pipe - (NEPIS)(EPA ...

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When utilized for measuring the thickness of a 6.5 mm, well-impregnated and cured CIPP liner, the discrepancy between thickness values measured using slide calipers and the ultrasonic probe were on the order of 1% (see Figure B-6). Figure B-6. Ultrasonic Instrument Used to Measure Well Cured Liner - MTC (left) and Insituform (right) A summary of the measured average thicknesses for all sample specimens is given in Table B-3. Table B-3. Comparison of Thickness Measured using the Slide Calipers and the Ultrasonic Device Sample Specimens Improperly cured CIPP liner (Ultra Sonic 1) Properly cured CIPP liner (Ultra Sonic 2) Properly cured CIPP liner (Ultra Sonic 3) Properly cured CIPP Liner Ultra Sonic 4) Slide Calipers (in.) Measured Thickness B-4 Ultrasonic Device (in.) 0.203 N.A. 0.280 0.281 None. 0.270 0.271 None. 0.268 0.267 None. PVC Pipe SDR 35 0.187 0.183 None. Polyurea/polyurethane hybrid 0.127 N/A None. White Felt 0.112 N/A None. Steel N/A = Reading not available 0.187 0.188 None. B.4 References 01. http://www.bamr.co.za/velocity%20of%20materials.shtml 02. Olympus 37DL – Manual Remarks Improperly impregnated sample
APPENDIX C INTERNATIONAL STUDY INTERVIEW REPORTS
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EPA/600/R-12/004 | January 2012 | w
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DISCLAIMER The work reported in thi
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ACKNOWLEDGMENTS This report has bee
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samples had a flexural modulus valu
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CONTENTS DISCLAIMER ...............
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4.3.10.2 Upstream Sample ..........
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9.2.2 Recommendations for Developme
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Figure 5-27. Raman Spectra for the
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ABBREVIATIONS AND ACRONYMS AMP Asse
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1.0: INTRODUCTION This report forms
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1.2 Organization of the Report Foll
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Some sections of a sewer system may
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• The depth of the pipe below the
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Figure 2-3 highlights the main diff
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The most commonly used resins are i
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the glass fiber. The tube, which is
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3.0: DEVELOPMENT OF CIPP EVALUATION
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• The municipality would be willi
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• Measurements and/or physical sa
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Table 3-3. Laboratory Evaluation an
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4.1 Introduction 4.0: CITY OF DENVE
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Figure 4-1. Images of the Recovered
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Sample ID Figure 4-4. Soil Grain Si
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Location Table 4-5. Denver 8-in. Li
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Profile Plot Red - Steel tube Green
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Table 4-7. Results from Flexural Te
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35 Table 4-9. Comparison of Test Da
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4.2.12 Buckling Test. A steel mecha
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Figure 4-18. Pressure Gage and Pres
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4.2.13 Shore D Hardness. Durometer
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Figure 4-24. Barcol Hardness Readin
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increases and the heat of cure decr
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In summary, CCTV inspection of thre
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Figure 4-28. Thickness for Denver 4
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4.3.6.2 Downstream Sample. Seven sp
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Figure 4-34. Flexural Stress-Strain
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Table 4-18. Flexural Test Results f
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4.3.8.2 Upstream Sample. Specimens
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4.3.10 Barcol Hardness 4.3.10.1 Dow
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4.3.11.2 Downstream Sample. The Ram
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5.1 Introduction 5.0: CITY OF COLUM
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April 16, 2010 The specimen was rec
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The resulting gradation curves are
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Table 5-4. Soil pH at Designated Lo
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Figure 5-8. Average Thickness at Di
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5.2.12 Flexural Testing. Specimens
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Figure 5-14. Flexural Stress-Strain
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Figure 5-16. Tensile Stress-Strain
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5.2.15 Buckling Test. A mechanical
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Figure 5-24. Localized Leak on the
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Figure 5-26. Barcol Hardness Readin
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5.3.3 Visual Inspection of Liner. I
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Figure 5-32. Ultrasonic Testing for
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Table 5-13. Geometric Data for Flex
Page 109 and 110: Figure 5-38. Shore D Hardness of Co
Page 111 and 112: 6.1 Introduction 6.0: REVIEW AND CO
Page 113 and 114: Overall, the liners appear to be ho
Page 115 and 116: age difference between the liners i
Page 117 and 118: Looking for correlations to the low
Page 119 and 120: A significantly lower range of Shor
Page 121 and 122: 7.0: RECOMMENDED TEST PROTOCOL FOR
Page 123 and 124: combining this broadly available in
Page 125 and 126: Table 7-3. Overall Structure for a
Page 127 and 128: Table 8-2. CIPP and Other Rehabilit
Page 129 and 130: Table 8-5. Rehabilitation Specifica
Page 131 and 132: 113 Table 8-9. Process Verification
Page 133 and 134: Göttingen Stadtentwässerung: Göt
Page 135 and 136: experience and quality, and do not
Page 137 and 138: km of pipe and 50-year-old pipes ar
Page 139 and 140: methods are detailed in the Guide t
Page 141 and 142: The business of pipeline rehabilita
Page 143 and 144: • Destructive testing (but will n
Page 145 and 146: In Denver, in CCTV inspections of n
Page 147 and 148: 9.2 Recommendations for Future Work
Page 149 and 150: Falter, B. 1996. “Structural Anal
Page 151 and 152: Lehmann, M.A, J.P. Schroeder and C.
Page 153 and 154: APPENDIX A LIST OF TEST STANDARDS R
Page 155 and 156: The following table lists the non-A
Page 157 and 158: B.1 Introduction This study was con
Page 159: Mean thickness values for each cont
Page 163 and 164: The original Insituform liner insta
Page 165 and 166: However, the figures published by O
Page 167 and 168: exfiltration and infiltration. Any
Page 169 and 170: STW uses CIPP for virtually all of
Page 171 and 172: method. Top hat repairs to junction
Page 173 and 174: All design and construction supervi
Page 175 and 176: Process verification test samples a
Page 177 and 178: consultant born out of the corporat
Page 179 and 180: BW continues to use CIPP, mainly in
Page 181 and 182: East, but has not yet had marked su
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