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4-92 FRI 8:18 KANSAS CITY FAX NO, 9136422847 05 <br />Inspection Engineering & Testing Job No: 02-9025-001-01-10 <br />November 23, 1992 Log No: 2-2696 <br />Page 4 <br />iii. The encasement should be sufficiently rigid to <br />not allow any settlement of the subgrade soils. <br />under the footings, as well as to protect the <br />conduit from excessive pressure due to the <br />planned footings. <br />b. Sewer Line <br />i. We understand from Mr. Pat Johnson of Johnston <br />Burkholder Associates, that the existing sewer <br />line is at least 8 feet below finished floor <br />elevation. <br />ii.Per the loads indicated on the Foundation <br />Plan, the maximum pressure exerted by the <br />footings above the sewer line will be 200 <br />lb/lin. foot, or 133 lb/ft2, based on the <br />indicated footing width of 1.5 foot. <br />iii. Using the Westergaard analysis for pressure <br />exerted beneath footings, we have estimated <br />the maximum pressure on the sewer line due to <br />the planned footings to be 201 lb/ftz. <br />iv.We therefore expect that the sewer pipe should <br />not be significantly influenced by <br />construction of the proposed footings, in our <br />opinion. <br />C.6-inch PVC Pine <br />The purpose and present use of the existing 6-inch <br />DEC-