Civil · C-PW985

Tree Well Plan and Section Details with Bioretention Soil and Drainage

Elements

Walls Foundations / Footings Drainage Site / Paving Anchors / Embeds

Connections

About this detail

A street tree well features a city standard sidewalk, shrubs, and a tree planted in an 18-inch biotreatment soil mix over 12 inches of Class II permeable rock. A 4-inch perforated PVC pipe is raised 6 inches from the bottom for drainage, accompanied by a 6-inch ponding depth and a 2-inch mulch layer. Side walls and a pier system utilize 8-inch by 8-inch by 6-foot piers at corners and mid-span walls with tree stakes embedded 3 feet minimum into native soil. The plan view shows a trench grate, inlet stormwater facility, 8-inch diameter cleanout with overflow drain, and a 4-inch perforated storm drain.

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