retaining wall for waste dump 1

[jartgo]

As background, what I'm describing is the little ramp that people drive up and toss their trash over into a dumpster, then drive back down. The dumpster would set next to the wall, and the public would drive up to the edge of the wall and throw the trash over into the dumpster.

A waste transfer station (as described above) needs a new retaining wall. Anyone ever used an MSE system for this or is it usually cast in place? The owner is telling me that it needs to be a vertical wall (no batter), other than that he has no preferences what it looks like. I had been directed towards an MSE wall by a geotech consultant, but I haven't been able to find any that can be constructed with no batter (nor can I imagine one would exist since it's not a rigid wall). Thought I'd check here before I got into the cast in place walls. Anyone ever done a wall for a waste transfer station, or similar application?

 

[DRC1]

I have never done one but have used a couple. The ones I have seen are made out of concrete "mafia" blocks (2x3x4) and are stacked to form a vertical wall. they can go 2 or 3 (or more deep if needed). Generally they are avialable from precasters, some with interlocking tops and bottoms. The prices are very usually reasonable

 

[wancho]

You could build the MSE wall, then shotcrete or cast the battered face to vertical.

 

[Nuccio]

They do make SRW with little 1/4" setback per course 8" high and zero set back Lookinto keystone retaining walls. The only problem I see is when the rolloff drop his container close to the wall he could hit the wall and damage it over time. A poured in place wall would be better suited for this application.

 

[MSEMan]

We've done a few of them using MSE walls with precast concrete panel facings. These systems are usually built with vertical facings (highway retaining walls and bridge abutments).

See:

http://www.earthteccorp.com

http://www.recousa.com

http://www.tricon.com

You will want to use high quality (i.e. frictional select with less than 15% fines) backfill with these systems. Actually you should want to use high quality backfill with any MSE wall system, since this is the primary determinant of wall performance.

Yours is a pretty standard application so it shouldn't be any problem to get a cost effective design and materials package from any of the above suppliers.

 

[gcgrant]

I agree with Nuccio. The dumpster will be dropped against the srw block and damage them. Make the face next to the dumpster a concrete gravity wall (vertical) and use srw side walls.

 

[jartgo]

Thanks, I'm going with the poured in place.

 

[TDAA]

Good choice. That is what my previous firm allways used. The system that mseman describes might be OK, but for durability and such, cast in place is a good option.