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23_10_16_1339 Background Record Materials
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Last modified
10/16/2023 3:12:15 PM
Creation date
10/16/2023 3:10:51 PM
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Template:
PDD_Planning_Development
File Type
MA
File Year
23
File Sequence Number
5
Application Name
River Road-Santa Clara Neighborhood Plan
Document Type
Misc.
Document_Date
10/16/2023
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Yes
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Teri Higgins <br />June 30, 2016 <br />Page 6 <br />Table 2. Eugene Sewer Pipe Lengths (in feet) by Material and Diameter (inches) <br />8" or less 10"‐12" 15"‐20" 21"‐30" 36"‐48" 54"‐72" <br />Concrete ‐ assumed <br />bell & spigot 1,196,312 154,417 125,096 128,049 81,383 37,904 <br />PVC/Truss 1,391,462 82,639 25,834 8,575 <br />Continuously Lined <br />between Manholes ‐ <br />Various Host Pipes, <br />includes HDPE 302,756 54,595 17,979 4,935 1,016 <br />Transite 9,365 6,575 3,772 <br />Cast Iron/Steel 2,268 499 176 125 21 <br />Clay 12,464 686 175 <br />Total 3,649,078 <br />Table 3 shows the expected number of repairs when the sewer system is subjected to wave propagation <br />(shaking). This is not a precise number with a range in the results of minus 50% to plus 100%. Repairs <br />for areas subjected to liquefaction are not included in this table. The large majority of the repairs are in <br />small diameter concrete and PVC/Truss pipe, driven by the large footage in these categories. These <br />repairs would be randomly distributed across the system. <br />Table 3. Expected Gravity Pipe Repairs Due to Wave Propagation (PGV) <br /> Pipe Type K <br />8" or <br />less <br />10"‐ <br />12" <br />15"‐ <br />20" <br />21"‐ <br />30" <br />36"‐ <br />48" <br />54"‐ <br />72" Total <br />Concrete ‐ assumed bell & <br />spigot 0.7 10 1 1 1 1 0 14 <br />PVC/Truss 0.7 11 1 0 0 0 0 12 <br />Continuously Lined between <br />Manholes ‐ Various Host <br />Pipes, includes HDPE 0.4 2 0 0 0 0 0 2 <br />Transite 0.5 0 0 0 0 0 0 0 <br />Cast Iron/Steel 1.0 0 0 0 0 0 0 0 <br />Clay 1.0 0 0 0 0 0 0 0 <br /> Total 23 2 1 1 1 0 29 <br />2020 Eugene Wastewater Master Plan Appendix A-6
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