If you were Registered and logged in, you could reply and use other advanced thread options
|
Posted by james on October 7, 2009, 3:09 pm
I want to have crawlspace drainage installed. My crawlspace is approximately
a rectangle with some protrusion (e.g. a dining nook).
When making crawlspace french drain, is it better for the drain to follow
the foundation wall including all the nooks and crannies, or is it better to
keep the drain straight, i.e. make a large rectangle that fit inside the
foundation?
Two contractors proposed different approaches, and I wonder which one is
better. The water is believed to come from the ground during rainy season
(i.e. rise in waterbed), although this is not proven. The other possibility
is leaky downspount drain lines.
Also, the sump pump will soak in water in a drain bucket at all time. Even
though sump pump are designed to sit in water, I think they still last
longer out of water. Would it be better to put a tiny hole at the bottom of
the drain bucket, so that large amount of water still get pumped out, but
standing water (below the water level switch) will gradually drain out and
leave the pump dry?
The reason I believe the pumps last longer when dry, is because I once left
a sump pump in a hottub for several years. When I pulled it out, all the
fasteners (screws) have become rusty.
|
|
Posted by bob haller on October 7, 2009, 9:23 pm
> I want to have crawlspace drainage installed. My crawlspace is approximat=
ely
> a rectangle with some protrusion (e.g. a dining nook).
> When making crawlspace french drain, is it better for the drain to follow
> the foundation wall including all the nooks and crannies, or is it better=
to
> keep the drain straight, i.e. make a large rectangle that fit inside the
> foundation?
> Two contractors proposed different approaches, and I wonder which one is
> better. The water is believed to come from the ground during rainy season
> (i.e. rise in waterbed), although this is not proven. The other possibili=
ty
> is leaky downspount drain lines.
> Also, the sump pump will soak in water in a drain bucket at all time. Eve=
n
> though sump pump are designed to sit in water, I think they still last
> longer out of water. Would it be better to put a tiny hole at the bottom =
of
> the drain bucket, so that large amount of water still get pumped out, but
> standing water (below the water level switch) will gradually drain out an=
d
> leave the pump dry?
> The reason I believe the pumps last longer when dry, is because I once le=
ft
> a sump pump in a hottub for several years. When I pulled it out, all the
> fasteners (screws) have become rusty.
as long as the drain field follows the general outline of the home it
probably doesnt matter.............
any chance the drain could drain to daylight like the home sitting
well above grade........
no sump pump is perfect, its best if you dont need one at
all..................
|
|
Posted by mike on October 8, 2009, 12:20 am
> I want to have crawlspace drainage installed. My crawlspace is approximat=
ely
> a rectangle with some protrusion (e.g. a dining nook).
> When making crawlspace french drain, is it better for the drain to follow
> the foundation wall including all the nooks and crannies, or is it better=
to
> keep the drain straight, i.e. make a large rectangle that fit inside the
> foundation?
1. Fix all downspouts and have them drain far away from the house in
a safe location.
2. The french drain (and drainage in general) should prevent your
foundation from being saturated with water, not drain water out after
the fact. Any trench should be outside the foundation so it can
intercept and redirect water before it gets there. I doubt that the
origin of the water is under the house.
|
|
Posted by bob haller on October 8, 2009, 8:41 am
> > I want to have crawlspace drainage installed. My crawlspace is approxim=
ately
> > a rectangle with some protrusion (e.g. a dining nook).
> > When making crawlspace french drain, is it better for the drain to foll=
ow
> > the foundation wall including all the nooks and crannies, or is it bett=
er to
> > keep the drain straight, i.e. make a large rectangle that fit inside th=
e
> > foundation?
> 1. =EF=BF=BDFix all downspouts =EF=BF=BDand have them drain far away from=
the house in
> a safe location.
> 2. =EF=BF=BDThe french drain (and drainage in general) should prevent you=
r
> foundation from being saturated with water, not drain water out after
> the fact. =EF=BF=BDAny trench should be outside the foundation so it can
> intercept and redirect water before it gets there. =EF=BF=BDI doubt that =
the
> origin of the water is under the house.
it can come from under the home.
although exterior french drain with new downspout lines is a easy job
with a backhoe, and since the downspout lines should be addressed
first, i would do the exterior now, then under the home if needed.
its best if the lines can run downhill to daylight, so as part of the
exterior job run a dedicated line to under the home.
even if its not as low as the bottom of a future sump pump it can be a
useful sump overflow / overfill line.
|
|
Posted by Ken L on October 8, 2009, 9:56 am
> I want to have crawlspace drainage installed. My crawlspace is approximat=
ely
> a rectangle with some protrusion (e.g. a dining nook).
> When making crawlspace french drain, is it better for the drain to follow
> the foundation wall including all the nooks and crannies, or is it better=
to
> keep the drain straight, i.e. make a large rectangle that fit inside the
> foundation?
> Two contractors proposed different approaches, and I wonder which one is
> better. The water is believed to come from the ground during rainy season
> (i.e. rise in waterbed), although this is not proven. The other possibili=
ty
> is leaky downspount drain lines.
> Also, the sump pump will soak in water in a drain bucket at all time. Eve=
n
> though sump pump are designed to sit in water, I think they still last
> longer out of water. Would it be better to put a tiny hole at the bottom =
of
> the drain bucket, so that large amount of water still get pumped out, but
> standing water (below the water level switch) will gradually drain out an=
d
> leave the pump dry?
> The reason I believe the pumps last longer when dry, is because I once le=
ft
> a sump pump in a hottub for several years. When I pulled it out, all the
> fasteners (screws) have become rusty.
My basement has a drain/sump system that was installed after the house
was built. It follows the perimeter of the basement walls, on the
inside, and works fine. As for the pump, I would say the pump is
designed to sit in water and you should not worry about it. I have
never had a pump fail due to rusty screws; the failure mode generally
seems to be the switch. Besides, it will rust just as fast, maybe
faster, sitting in moist air. --H
|
| Similar Threads | Posted | | crawlspace french drain -- would it weaken the foundation? | December 28, 2005, 10:21 am |
| French Drain through Load Bearing Wall? | March 30, 2008, 2:59 pm |
| Suggestions for Connecting Filter Backwash Drain to French Drain? | July 22, 2007, 5:02 pm |
| French drain help..... | April 17, 2007, 1:05 pm |
| French drain | May 12, 2008, 9:52 am |
| Who do I call? dry well, french drain | August 25, 2005, 8:48 am |
| Cover French Drain | June 22, 2005, 3:01 pm |
| Raised french drain? | December 16, 2005, 10:06 am |
| Tile over/around french drain | March 4, 2006, 7:37 pm |
| Flooding - French Drain | April 16, 2007, 3:45 pm |
|
|
Yahoo! 
Google 
Windows Live 
del.icio.us 
digg 
Netscape 
XML Sitemap