Landscape · L-KSCEQ

CMU Planter Wall and Drainage Detail at Mat Slab

Materials

Concrete Steel Stainless Steel Masonry / CMU

Elements

Walls Floors / Slabs Foundations / Footings Vaults / Domes Expansion / Control Joints Waterproofing / Flashing Drainage Site / Paving Anchors / Embeds Reinforcing

Connections

Rebar Splice / Development Expansion / Slip Connection

About this detail

A concrete masonry unit planter wall bears on a concrete mat slab foundation system. Raised planter soil mix is retained between two concrete masonry unit walls, with mulch held three inches below the top of the wall. Ten gauge stainless steel flashing with sealant tooled for water run-off caps the wall. Waterproofing and drainboard are applied to the exterior face of the CMU wall, backed by filter fabric. A four-inch perforated pipe and drain rock wrapped in filter fabric run centrally beneath the planter, connecting to the storm drain, alongside an area drain with dome and an irrigation drip stubbed under or through the wall and sealed with silicone sealant. The concrete footings are doweled into the mat slab with minimum six-inch vertical and one-foot horizontal clearances. A concrete paving finish grade abuts the exterior of the planter wall with an expansion joint.

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