Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Building & Construction

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

Reply
 
Thread Tools Search this Thread Display Modes
Old 05-01-2010, 01:41 PM   #1
Member
 
Join Date: Jan 2009
Location: N Georgia
Posts: 114
Share |
Default

How would I form this sump pit design?


I have a 3'x5' area in my crawlspace that I want to form a sump pit out of concrete, but I'm unsure how to form it.

I'd like to have a 16"x16"x 1' deep square catch basin in the middle and have the rest of the concrete have a slight slope so that any water it catches will be directed to the sump.

I could use a plastic container for the middle basin, but would prefer the concrete approach.

Right now I'm thinking of a 2 stage pour.
1) Pour the top slab by making a form in the middle to define the area for the catch basin

2) Dig down a foot+ in the middle. Pour the bottom later of the catch basin. Place a box on the base concrete and then fill the outsides of the box to the top of the slab.


Does this sound reasonable, or is there a way to do it in a single pour?

walkman is offline   Reply With Quote
Old 05-01-2010, 05:14 PM   #2
Member
 
Join Date: Mar 2007
Location: Long Island, NY
Posts: 9,519
Default

How would I form this sump pit design?


You can purchase sump basins and just insert them into the slab. If you still want to build your own, 12" is too shallow. I would make it 16"-18" deep.
Ron

Ron6519 is offline   Reply With Quote
Old 05-02-2010, 06:38 AM   #3
Member
 
Join Date: May 2009
Location: Owasso OK
Posts: 347
Default

How would I form this sump pit design?


Just asking.....why would you want to go to all the trouble and mess of pouring concrete in a crawl space? I can not see the benefit to all that additional work.

I had water problems in mine: Purchased a Little Giant crawl space kit that comes with pump and plastic "pit."

Dug the pit, gravel in first 4-8 inches..pit it, then filled with gravel surrounding pit approx 6 inch circumference around pit. I also dug channels leading to the pit, using 2 inch perf pipe and gravel.

What is the purpose of the concrete?

ror
RoyalAcresRod is offline   Reply With Quote
Old 05-02-2010, 03:19 PM   #4
Member
 
Join Date: Jan 2009
Location: N Georgia
Posts: 114
Default

How would I form this sump pit design?


Quote:
Originally Posted by RoyalAcresRod View Post
Just asking.....why would you want to go to all the trouble?

ror
I pulled out 50 yards of dirt from the crawlspace portion of my basement and created a 13'x15' utility area with 8' ceiling. It has a slab floor and 5' high block retaining walls on 3 sides. I still have a 5' wide area of crawlspace along the front of the house that leaked water when we had very heavy rains earlier this year.

I want to be able to capture any flooding from the crawlspace area before it could reach the slab, plus have a way to exit water from my humidier, or from a water heater overflow, etc.
walkman is offline   Reply With Quote
Old 05-02-2010, 04:06 PM   #5
Member
 
Join Date: May 2009
Location: Owasso OK
Posts: 347
Default

How would I form this sump pit design?


Well that makes a little more sense. I was envisioning a short crawl, and couldn't understand why you'd want to go to the trouble of concrete.

I would prepare the pump pit approx 3 ft wide by at least 3 ft deep. Put about 6 inches of gravel on bottom, put in sump pit, and then surround the remainder with gravel to about 2-3 inches of surface, then form the perimeter with 1X or 2x lumber...then make the pour.

If there are supplemental areas you want to drain to pit, put those pipes in so that they drain to pit before you pour.

rod
RoyalAcresRod is offline   Reply With Quote
Old 05-02-2010, 11:25 PM   #6
Newbie
 
Join Date: May 2010
Posts: 5
Default

How would I form this sump pit design?


A five gallon pail set in a concrete pad works, but depending on how much water you get, probably not the best way. If you get a constant flow, it would be better to have a 20 gal pumpout then a 5 gal to be easier on the pump. Also, a check valve is important if pumping upward. Not an expert, just my experiences
jgipp is offline   Reply With Quote
Old 05-03-2010, 07:05 AM   #7
Member
 
Join Date: May 2009
Location: Owasso OK
Posts: 347
Default

How would I form this sump pit design?


Little Giant makes several pre-packaged sump systems complete with pump, pit, and check valve. I've used a number of their systems and have been quite satisfied. All are available for online purchase.

Rod
RoyalAcresRod is offline   Reply With Quote
Old 05-03-2010, 11:53 AM   #8
Member
 
Join Date: Jun 2009
Location: atl & hilton head
Posts: 3,191
Default

How would I form this sump pit design?


we buy the 30" tall sumps, ck valves, & zoeller pumps from ferguson supply ( $ 235 +/- ) then install the sump on 6" of 1 1/2"- stone,,, surround w/stone, then place 3" of conc around the sump,,, that's our normal install & most pro's do the same,,, good luck !
stadry is offline   Reply With Quote
Old 05-03-2010, 01:47 PM   #9
liscenced electrician
 
Join Date: Jul 2008
Location: Oregon coast
Posts: 983
Default

How would I form this sump pit design?


i agree with everyone else. Why not just use plastic, and then dig trenches and fill with drain rock to capture any water and lead it to the pump?

jimmy21 is online now   Reply With Quote
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 pit/pump questions aliasoink Building & Construction 8 03-02-2010 11:41 PM
Basement sump pumps, 1 runs more than other cjdock Building & Construction 3 11-02-2009 06:28 AM
Sump pump drainage problem sk8z Plumbing 6 11-29-2008 10:09 PM
Sewer gas smell in basement from sump pump mirage212 Plumbing 15 10-23-2008 06:09 PM
Sump Pump Design handy man88 Plumbing 2 10-04-2008 09:48 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.