Structural · S-BPYR9

Cantilevered Concrete Retaining Wall with Fence Post Foundation

Materials

Concrete Masonry / CMU

Elements

Columns Walls Retaining Walls Foundations / Footings Stem Walls Arches Drainage Anchors / Embeds Reinforcing

Connections

Rebar Splice / Development

About this detail

A reinforced concrete retaining stem wall bears on a spread footing measuring four feet six inches wide by ten inches thick, with three inches of typical concrete clearance below bottom reinforcement and two inches at top slab reinforcement. The footing contains number four or number five reinforcing bars spaced at sixteen inches on center along the bottom, and number four bars at sixteen inches on center horizontally on each face and vertically within the stem wall. The stem wall extends upward to support a concrete masonry unit wall above, tied together with vertical dowels matching the masonry wall size and spacing. A field fence foundation cage is integrated into the retaining wall, accommodating a field fence post by others with number six reinforcing bars at corners and number four bars at sixteen inches on center. Subgrade preparation requires excavating twelve inches below the foundation subgrade, adding structural fill compacted to ninety-five percent relative compaction per geotechnical recommendations. Drainage provisions include a two-foot width of angular drain rock and a drain pipe referenced to civil drawings.

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