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Stability of Rubble Retaining Wall

Stability of Rubble Retaining Wall

Stability of Rubble Retaining Wall

(OP)
Anyone had experience in the stability of this type of retaining wall? Thank you.

RE: Stability of Rubble Retaining Wall

There's an FHWA Manual CFLTD 06-006 on rockery. I also attached a standard drawing from 1913 (NYC Bronx Borough President) on construction of dry rubble walls.

I've inspected several hundred rubble walls, quite a few in the 20+' height. Bulging is obviously a major concern. I've seen concrete walls that have noticeably tilted or displaced laterally; with stone they'll fail first. Another thing to look for is weathering/deterioration of stones; erosion along the base because water is meant - at least in the old days - to flow through the wall. Vegetation growing from a wall can also affect stability.

Most of the stone walls I've inspected are probably 100+ years old and generally still functioning well.

RE: Stability of Rubble Retaining Wall

(OP)
Thank you for the FHWA download information and insights.

RE: Stability of Rubble Retaining Wall

no problem

RE: Stability of Rubble Retaining Wall

Attached is a rockery design guide. It sounds like they have preformed well however I still feel slightly uncomfortable with them. Usually the ones I see are missing stones/boulders or need more frequent maintance. However these are probably not designed or not constructed properly.

EIT
www.HowToEngineer.com

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