Re: Details of install of new sump pit and pump
This is an ongoing saga ... I'm getting closer and closer ... :-)
I inhabit a small brick bungalow, built in 1954, poured-concrete
foundation, about 800 square feet. Perhaps twice a year we
get hard/fast rains (i.e. 3" in 12 hours) which cause a
hydrostatic water problem in the basement. The water "pushes
up" from underneath the basement floor.
I need to specify/install both a sump pit and a sump pump. I am
modestly competent (not expert) at such DIY projects.
The sump pit will be about 24" in diameter and about
26" deep. I will place the edge of the pit about 15"
from a wall. I've drilled 2 holes thru the basement
floor: it appears to be (surprisingly) only about 2"
thick. I currently *hope*
to be able to cut the hole
with a 'diamond' blade on a standard-duty circular
I'd love to be able to bevel-cut a square hole so
the bevels would support the pad (with the sump basin
in the middle) I'm going to pour. Not practical?
What kind/grade of concrete should I use? I *hope*
to be able to walk on the .5+ " (thick) lid that I will cut.
Strength and adherence are the highest priorities.
What should I backfill with and where can I commonly
get it? "Crushed stone"? Gravel? From Home Depot or ?
The basin tapers from 22" diameter at the top to about
16" at the bottom, and is 23" hi. I'm thinking of
drilling 3 rows of .5" holes starting about 1" above
the top of the pump. I have some waterproof wood
glue that _might_
be suitable for gluing fine nylon
mesh outside the holes (to keep larger particles out).
Other suggestions are welcome.
I'm looking at a 1/3 hp Flotec submersible pump with
a vertical-float switch (instead of "the ball"),
and an in-line Flotec hose-type check valve. I've
heard the hose-type connection reduces vibrations.
Right next to what will be the sump pit is a washing
machine, discharge from which is routed to a floor
drain with 1.5 " PVC. I hope to integrate the discharge
from the pump (this conforms to local code). Any
reason not to do this?
I am still uncomfortable re mounting of the pump. Folks
say put 3" of gravel or a couple bricks in the bottom
of the sump basin and rest the pump on top of that.
I need to be able to remove the pump easily for maintenance
/repair. Should I just cut the PVC coming out of the basin
and use a small hose section and clamps to make it
removable? Are there issues with stability, vibration,
Any/all info/suggestions are welcome.