Our driveway is sunk maybe 5 feet down from the
level of the front yard, and they're separated by
a rock retaining wall. (Rocks maybe 5 to 10 or 12
inches wide/high, don't know how thick (going back
perpendicular to the wall.)

Anyway, over the years the water pressure (rain)
has, in some places, washed out the concrete or
grout or whatever they used for binding it all
together.

So they're holes between some of the rocks, of
size, at the largest, maybe six inches in both
directions.

Question: what to do about it?

And how much work might it be?

(Something you do yourself, or instead hire
someone? (Here in Westchester County, NY,
just north of the Bronx, there's lots of
(mexican, central-american) immigrants who
seem to know rock-work.))


Ideas welcome!


Oh, whatever you use to fill up the holes,
do you have to make a big deal of mixing it,
or might it come "ready to use"? Pros and cons?



Thanks!


David

On 15 Jul 2008 13:19:58 -0400, (David Combs) wrote:

Our driveway is sunk maybe 5 feet down from the
level of the front yard, and they're separated by
a rock retaining wall. ...

So they're holes between some of the rocks, of
size, at the largest, maybe six inches in both
directions.

Question: what to do about it? ...

Oh, whatever you use to fill up the holes,
do you have to make a big deal of mixing it,
or might it come "ready to use"? Pros and cons?

Just something to keep in mind: Not that I've ever built one, but I see
a lot of tipped over retaining walls. I think is due to water pressure.
IMO, you need good drainage from the back side. One way to do this is
to leave the joints fairly open.

G

On Jul 20, 8:06�am, George wrote:
On 15 Jul 2008 13:19:58 -0400, (David Combs) wrote:

Our driveway is sunk maybe 5 feet down from the
level of the front yard, and they're separated by
a rock retaining wall. �...

So they're holes between some of the rocks, of
size, at the largest, maybe six inches in both
directions.

Question: what to do about it? ...
Oh, whatever you use to fill up the holes,
do you have to make a big deal of mixing it,
or might it come "ready to use"? �Pros and cons?

Just something to keep in mind: Not that I've ever built one, but I see
a lot of tipped over retaining walls. �I think is due to water pressure.
IMO, you need good drainage from the back side. �One way to do this is
to leave the joints fairly open.

G

the easiest best long term solution is remove wall completely and
regrade yard, plant groundcover on slope.

no wall means this will never happen again.

retaining walls fail way too often. and few want to spend the bucks on
a real solution.

with a proper footer, below frost line and all the rest to do a good
long term job