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Old 10-31-2011, 07:14 PM   #1
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Shoring-up part of the property slumping into the ravine


I live at the top of a revine that is quite stable. What's not stable, is the fill at the top that constitues the yard. Over the last 10 years, I've lost probably 6 ft of elevation where this yard meets the ravine due to slow slumping and erosion of this non-native soil layer. The area in question is probably 80 ft in length and would average about 4 ft in hight.

I understand enough about this to move toward a retaining project. The problem with shoring-up a slope is that your shoring-up material also has to reside on a slope! So, I've thought of a number of alternatives but would love some experienced input.

One possibility is a large stone/boulder retaining wall stepped into the slope such that it will remain in place. I found a couple of contractors experienced with this and it looks like about a $10K project that probably will work.

Another option is to put-in plilings to penetrate to the native layer of soil and then use those pilings to support a poured concrete wall. Don't know how pricey this would be but probably a lot more than $10K.

Timbers, fencing, and the like are simply too light for the retention required. Anyone have any other ideas?

thanks!
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Old 10-31-2011, 09:15 PM   #2
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Have you considered anything like this: http://www.versa-lok.com/?
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Old 11-01-2011, 07:21 AM   #3
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There are at least a dozen different types of walls that are built for various purposes. The lowest cost typically are the segmental block retaining walls. The blocks are made by companies such as Versalok or Ideal, and some of them probably have a local plant. Installation is fairly rapid, but does require drainage and proper backfill, so you would almost certainly have to remove a portion of the slumping soil and replace with proper backfill aggregate.

There are all types of gravity retaining walls, including stone, cast concrete block, and complicated reinforced earth structures. Typically expensive to install, usually requires a lot of heavy equipment, not DIY friendly.

There are cast in place concrete walls in all different shapes. One common type is the L shaped wall, which incorporates reinforced concrete. Expensive to build, but can hold back most anything if properly designed. Not for the DIYer.

There are oddball walls such as metal gabions. There are soldier pile and lagging walls that use steel or wooden piles with cross beams to support soil. T Wall makes special shaped concrete blocks that can be used for retaining soil.

That is the short list. I suggest you hire a local engineer familiar with your area to design a cost effective wall for you, and be present at least part of the time during installation, unless you feel up to the DIY challenge of building your own wall. Selection of the "best" wall requires a site visit, local knowledge of conditions, and an in depth discussion with you about exactly what you are looking for in terms of performance, longevity, cost, and appearance. This is hard to do via an internet chat forum.
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Old 07-27-2017, 06:14 PM   #4
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Re: Shoring-up part of the property slumping into the ravine


Hmmm... thanks for the info... when searching for an engineer, what type of engineer should you seek?
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Old 07-27-2017, 06:21 PM   #5
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Re: Shoring-up part of the property slumping into the ravine


geotechnical engineer<<<<<<
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Old 07-27-2017, 06:31 PM   #6
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Re: Shoring-up part of the property slumping into the ravine


Have you considered gabions?

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Old 07-27-2017, 08:46 PM   #7
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Re: Shoring-up part of the property slumping into the ravine


Got a picture. Can you build out in front of the slope so that the fill needed can be selected fro proper drainage? How deep before you reach native soil and what type is it?

I assume you own all of the property in question?

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Old 07-27-2017, 08:57 PM   #8
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Re: Shoring-up part of the property slumping into the ravine


I wonder what he did 6 yrs ago? Interesting stuff, though.
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Old 07-28-2017, 09:28 PM   #9
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Re: Shoring-up part of the property slumping into the ravine


I love it! A six-year-old thread that the OP never came back to reply to is adopted by a new member of the forums and continues as if it was started yesterday! Hopefully he'll stick around long enough to have his problem solved and provide pictures of the final solution.
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Old 07-28-2017, 11:16 PM   #10
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Re: Shoring-up part of the property slumping into the ravine


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Originally Posted by Msradell View Post
I love it! A six-year-old thread that the OP never came back to reply to is adopted by a new member of the forums and continues as if it was started yesterday! Hopefully he'll stick around long enough to have his problem solved and provide pictures of the final solution.
The print on old threads could be colour coded so you would know old right away.
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Old 07-29-2017, 10:25 AM   #11
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Re: Shoring-up part of the property slumping into the ravine


I guess we are all more interested in trying to help and as such do not tend to look at the age of the post.

It is still a helpful thread as there are others that probably have a similar issue.
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Old 08-02-2017, 06:43 AM   #12
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Re: Shoring-up part of the property slumping into the ravine


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Originally Posted by Drachenfire View Post
I guess we are all more interested in trying to help and as such do not tend to look at the age of the post.

It is still a helpful thread as there are others that probably have a similar issue.
I actually noticed the apparent name change of the OP, before the date.
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