6 foot cantilver balcony over retaining wall
6 foot cantilver balcony over retaining wall
(OP)
Greetings,
I am looking to design a 6-foot concrete balcony which will project over a concrete MSE wall. The soil side of the wall will be 6-feet long, and can tie into a sizable (4x4') concrete footing.
Has anyone had any problems with such a light load over an MSE? I often see culverts and parking placed adjacent but not over.
Thanks for your suggestions.
I am looking to design a 6-foot concrete balcony which will project over a concrete MSE wall. The soil side of the wall will be 6-feet long, and can tie into a sizable (4x4') concrete footing.
Has anyone had any problems with such a light load over an MSE? I often see culverts and parking placed adjacent but not over.
Thanks for your suggestions.






RE: 6 foot cantilver balcony over retaining wall
I would expect that there's be some type of foundation on the earth side of the wall that would support the cantilever over the wall. This foundation would most likely need to be deeper - to avoid additional lateral thrust on the MSE wall system.
RE: 6 foot cantilver balcony over retaining wall
An expert is a man who has made all the mistakes which can be made in a very narrow field
RE: 6 foot cantilver balcony over retaining wall
Now for a few reality comments. I have never a spread footing bridge abutment on a MSE wall in the midwest. I have seen details in the Ohio DOT bridge manual for it though as well as in Reinforced Earth COmpany's (RECO) online material.
In our office we check the bearing (of the original soil) and stability of the whole wall and whatever loads on are it.
You should consider the impact of what you're placing on the MSE wall due to strap maintenance or any future excavation that may need to be done which will impact the MSE fill.
Regards,
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RE: 6 foot cantilver balcony over retaining wall
RE: 6 foot cantilver balcony over retaining wall
RE: 6 foot cantilver balcony over retaining wall
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RE: 6 foot cantilver balcony over retaining wall
And for the record here since many of us are talking about on or behind the wall, the MSE wall is the entire granual backfill with straps that includes the concrete face panels. The face panels are not, however, the reason the wall retains fill, it is the granular fill reinforced with straps that do the retaining.
Having noted that most pile endbents for bridges are founded in the MSE wall not behind it.
I had hoped to point out that structures are often designed to sit atop MSE wall fill provided the bearing pressure of the original insitu soil and stability are checked for both the new MSE wall and whatever will sit atop.
Thanks!
Regards,
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