This outdoor drainage detail shows a swale varying from three to five feet in width, lined with six-inch rounded river rocks ranging from two to six inches in size placed at the base. Two to three man-sized rounded landscape boulders are positioned along the edges alongside planting specified per plan. A trench beneath the rock bed accommodates a perforated pipe, referenced to civil drawings for the French drain installation.
WIDTH VARIES, 3'- 5' WIDE 6" ROUNDED RIVER ROCKS VARIETY OF SIZES FROM 2"- 6" PLACE AT BASE OF SWALE 2 TO 3 - MAN ROUNDED LANDSCAPE BOULDERS PLANTING PER PLAN REF CIVIL FOR FRENCH DRAIN DETAIL
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