4920 DOVER ST 2018-01-02 MF Import

CASCADE GEOTECHNICAL July 6, 1987 Job No. 877-3G Shari Barlow and Greg Gabrio Page 3 Garaqe Floor r If the garage floor slab is placed on the uncontrolled fill found at the site, long term settlement and crackinq of the slab may be anticipated. If this is not aceptable, the fill should be removed and replaced with a select sand and gravel material which is com- pacted in twelve (12) inch lifts to 95% of the ASTM D-1557 maximum dry density. Foundation Wall Backfil.l Where the backfill height exceeds three (3) feet, the wall backfill should consist of free -draining material up to within two (2) feet of the top of the wall, in order to limit lateral forces on the walls. P perforated pipe drain which is bedded and backfilled with pea gravel should be placed at the base of all,walls. The wall and footing drain lines should be kept separate from any downspout lines and all drain lines should be run to the bottom of the slope with solid pipe. General We recommend that the soils engineer be asked to confirm bearing soil when the foundation excavation is complete. We expect the on -site soil conditions to reflect our findings; how- ever, some variations may occur. Should soil conditions be encoun- tered that cause concern and/or are not discussed herein, the soils engineer should be contacted immediately to determ,.ne if additional or alternate recommendations are required. This report has been prepared for the exclusive use of Shari Barlow