Sump Pump Pit Install Question - Plumbing - DIY Home Improvement | DIYChatroom
Advertisement


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Plumbing

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Like Tree1Likes
Reply
 
Thread Tools Search this Thread
Display Modes
Old 02-07-2017, 08:16 PM   #16
Concrete & Masonry
 
Join Date: Nov 2008
Location: Wisconsin
Posts: 3,785
Rewards Points: 516
Default

Re: Sump Pump Pit Install Question


Quote:
Originally Posted by sbkim View Post
1. Absolutely, there is quiet check valve. I have Proseries pump and a backup pump with battery which is tied to whole house generator.

2. I can adjust this with my switch. Right now, I have it running for 14 sec. Default is 10 sec.

Sadly, once the pit is clear of water, it fills up quickly up to about 10" and the last 1" would take probably an hour or more to fill before it activates the switch - hope that makes sense.

One more info that might be relevant. My pit is 18" wide and 22" deep. Would it help if I got 24" wide pit? I am wondering if that would perhaps lower the water level in the pit?
Sorry for the delay.

YES, a larger sump crock will definately help spare your primary pump. The longer it runs each cycle, the longer the pump will last, as it cut's down on the number of total cycles. I'm not a plumber or electrical engineer, but I do know that there used to be a minimum run time of 20 seconds for effluent pumps (sewer, not sump) for sanitary pits. I've always used this as a rule of thumb.

As for your other concerns, I don't think this is out of the ordinary in any way. You have to realize you're dealing with somethign that we call an "artificial water table", which is created by making a huge hole (basement) in the ground, and filling around it with well perculating stone & loose soil.
jomama45 is offline   Reply With Quote
The Following User Says Thank You to jomama45 For This Useful Post:
sbkim (02-08-2017)
Sponsored Links
Advertisement
 
Old 02-10-2017, 10:53 PM   #17
Member
 
Join Date: Nov 2007
Location: Nashua, NH, USA
Posts: 8,904
Rewards Points: 3,412
Default

Re: Sump Pump Pit Install Question


It is not necessary or desirable to plug little holes in the pit liner unless lots of dirt comes in.

The properly installed and working sump pump, pit, and drain tile system creates an artificial water table lower than the surrounding natural water table thus sparing your basement from flooding.

If you turn off the sump pump and leave it off, the artificial water table under your house gradually rises to more or less match the natural water table again.

The natural water table may vary with rainfall. There may be some weeks when the natural water table will also be below your basement floor and the water will rise in the pit and stop before the fat drain pipes (from the perimeter drain tiles) dumping into the pit are submerged. The pump can be adjusted so it does not continually run during these times.

If the water level stops with the pit partly filled and there is no basement flooding then things can stay that way indefinitely without pumping. But when the pump does start, it should keep going until the pit is nearly empty.

The water table can vary even in a horizontal span of a few feet. f you adjust the pump start water level upwares and a little too high and then the far side of the basement floods, then adjust it back down and let the pump run normally for about a week to see if you lowered the artifical water table again far enough.

When the pit fills rapidly after being emptied and then slows down this could mean that the pump finishes when lots of water is still queued up in the drain tiles and dumping into the pit. This can be improved by having a larger or deeper pit.
__________________
Stick to your lawn watering schedule until it really pours. Otherwise the storm might miss and the part that gets watered last (3 days away?) will dry up.

Last edited by AllanJ; 02-10-2017 at 11:21 PM.
AllanJ is online now   Reply With Quote
Sponsored Links
Advertisement
 
Old 02-11-2017, 07:04 AM   #18
Member
 
Join Date: Apr 2012
Posts: 308
Rewards Points: 438
Default

Re: Sump Pump Pit Install Question


Thank you AllaJ - very helpful ans easy to understand for a dummie like me.

Changing out to a bigger pit or adding another pit sounds like a lot of work and $. My pump currently runs once an hour (even without rain) all throughout the day with the switch set at the middle of the pit (water sitting right at the bottom of pvc). Is this too often? I have a backup pump and willing to change out primary after 2-3 years to prevent issues.

If I raise this an inch, I think it would go 4-5 hours before next run. I have a feeling that water level eventually goes up to that higher mark...Is it OK to cover up the PVC inlet pipe with water but still have the water level around 8 to 9" from the basement floor?

Last edited by sbkim; 02-11-2017 at 07:09 AM.
sbkim is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 02-11-2017, 08:05 AM   #19
Member
 
Join Date: Nov 2007
Location: Nashua, NH, USA
Posts: 8,904
Rewards Points: 3,412
Default

Re: Sump Pump Pit Install Question


You can usually get away with the water covering the PVC drain tiles halfway. It is risky to cover the PVC completely because, if the drain tiles get completely full of water anywhere along the perimeter of the basement, you can get basement floor flooding at the far side of the basement.

If you raise the switch an inch, how long it eventually takes for the water to rise to that higher mark depends on the natural water table and climate and rain conditions that week. Adjusting the switch is trial and error. Allow a week between trials for the artificial water table to respond to the switch level change.
__________________
Stick to your lawn watering schedule until it really pours. Otherwise the storm might miss and the part that gets watered last (3 days away?) will dry up.

Last edited by AllanJ; 02-11-2017 at 08:20 AM.
AllanJ is online now   Reply With Quote
The Following User Says Thank You to AllanJ For This Useful Post:
sbkim (02-11-2017)
Sponsored Links
Advertisement
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Sump Pump Questions henlij Plumbing 22 03-16-2015 10:00 PM
Sump Pump Basin install, existing rough sump hole. McSweny1103 Building & Construction 3 02-12-2012 02:45 PM
SUMP PUMP Question Stevera64 Plumbing 5 08-09-2009 07:43 PM
Sump pump drainage question famdog Plumbing 1 01-05-2009 01:42 PM
Sewer gas smell in basement from sump pump mirage212 Plumbing 15 10-23-2008 06:09 PM




Top of Page | View New Posts