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PN: 50663GE <br />November 20, 2006 <br />Retaining or <br />foundation wall <br />Water proof <br />membrane or <br />similar placed on <br />the foundation wall <br />and extending <br />below outer face of <br />Pervious drain board <br />fabric (optional) <br />Footing <br />Subsurface Drain System Concept <br />Impervious backfill for <br />upper 2 feet <br />Compacted backfill that <br />meets lateral earth pressure <br />design criteria. <br />Perforated pipe surcounded by <br />fabric wrapped free-draining <br />material. Note: The elevation <br />of the pipe will depend on the <br />location in the system at which <br />the cross section is considered. <br />No Scale <br />There aze often aspects of each site and structure which require some tailoring of the subsurface <br />drain system to meet the needs of individual projects. We are available to provide consultation <br />for the subsurface drain system for this project, if desired. <br />8.0 CONSTRUCTION CONSIDERATIONS <br />The section of the report provides comments, considerations and recommendations for aspects <br />of the site construction which may influence, or be influenced by the geotechnical engineering <br />considerations discussed above. The information presented below is not intended to discuss all <br />aspects of the site construction conditions and considerations that maybe encountered as the <br />project progresses. If any questions arise as a result of our recommendations presented above, or <br />if unexpected subsurface conditions aze encountered during construction we should be contacted <br />immediately. <br />is TRAUTNER ~ <br />A DIVISION OF TRIGONH31d <br />