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.r <br /> Project No. 90161e <br /> 7 June 1990 <br /> SUBDRAIN DETAIL <br /> 12" native soil <br /> _ compacted to 901 <br /> oQ�xFilter fabric layer <br /> Gar • ' • <br /> aczass top of drain <br /> JA material only <br /> .•off:; •O <br /> ! .p'r0%.,p�p�aa' <br /> Peri-azable material. <br /> ?DraPL yob=q A. Pea gravel or graded <br /> :=G`r�`' concrete rix aggregate' <br /> Sr 1iininium or as <br /> directed by they <br /> {I Geotechnical Engineer 4p= n <br /> o•c ;�:�,o:�. ;p 4" perforated pipe <br /> i b :;• - <br /> :�-•,- ...A:`. mac;' With holes turned doirn <br /> a. .n om •o•: 6" n11nimum <br /> 6 . 6 <br /> yin. <br /> plotes: Slope trench arid vipe at least 2' to drain. <br /> 1®V N.GDA R L - <br /> &ASSOCCATES R\TC_ <br /> zmr� Ma CHTECKKMEKCIKEERSLCONSTRUCTWKU,BS. -. . <br /> Figure No. 16 <br />