COMMUNITY FORUM

Kingrhino

05:19PM | 08/13/03
Member Since: 08/12/03
2 lifetime posts
Bvbasement
While investigating a problem with the air conditioning unit that resides in my crawlspace I discovered a more serious problem. I found that a small sinkhole has formed which runs under the footing of one of the cinderblock support piers that holds up one of the main beams under my house. I called a foundation repair company to come and check out the situation and was told that the pier has not failed and that it is still holding fine. The foundation company recommended just filling the hole with concrete. They said if the pier fails then a helical pier is the solution.
I estimate that the hole is about 20 inches deep and 20 inches wide and runs for about 24 to 30 inches. The hole is also filled with water. I have pumped the water out of the hole two times. Each time it has refilled with water overnight. We have had a tremendous amount of rain this summer and the ground is very saturated. I have verified that the water is not coming from a leaky pipe or the air conditioning unit.

My plan right now is to pump the water out of hole and then scoop out any loose or gooey slop. I will then immediately fill it with concrete. I estimate it will take about six to eight bags of concrete to do the job.

Does this sound like a good solution? Will the water in the ground mess with the concrete as it hardens? Should I possibly wait for the dryer weather to see if the ground water level lowers leaving a dry hole to fill?

I would appreciate any thoughts or Ideas.

treebeard

01:29AM | 08/14/03
Member Since: 01/14/03
265 lifetime posts
If the pros have told you that the pier isn't in danger of immediate failure, and the hole isn't getting any larger, then I think I'd wait for dryer conditions before filling. Even then, I think I'd just fill with clean gravel. If this pier is under the house in an area that is tough to get at, and the hole gets bigger still, then an extra blob of concrete that needs to be broken up and removed and really lends no support to the pier will just be a nuisance at that time. The gravel will be easier to remove (if it's still there...)

There has to be a reason for the hole, and that reason will be underground, under the hole. The material that was in the hole has gone 'somewhere', and that somewhere is under the hole. If there is, or was, a cavity down there, perhaps it's filled with the missing material now. Perhaps not. New gravel in the hole can migrate down into that cavity if that's what nature has in store here. A blob of concrete will simply sit there and allow the earth under it to subside, and you'd never know until the blob goes down, too. And things will be really late then.

Keep and eye on it and call your pros back if things don't get better after you fill it.

Kingrhino

02:11AM | 08/14/03
Member Since: 08/12/03
2 lifetime posts
The gravel idea sounds ok but I am concerned that I would not be able to compact the gravel enough to add strength to the undermined footing.

I also forgot to mention that I found some pieces of what looked like rotten wood in the hole. There is a depression that makes me believe that a log was burried under the crawlspace floor. This log probably rotted and left a void which may grown to the size it is now.

More Ideas are still welcomed.

devildog

05:19AM | 08/18/03
Member Since: 09/16/02
251 lifetime posts
Is the house new or old? They probably backfilled with any garbage that was left at the site. I think I would pour sand in the hole to fill it. It's cheap and flows easy. As far as the water, do you have gutters? Does the land outside your house slope away from your house GOOD. That's where most of the water comes from in a craw/basement. Do you have a sump pump? If not you can put a sump pump in a crawl space. I had a basement waterproofer come to a house I owned and I learned a lot from them about hydrostatic pressure and where water comes from in a crawl/basement. Didn't cost anything for the estimate and info.
Click_to_reply_button
Inspiration_banner

INSPIRATION GALLERY



Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.

Reply_choose_button

captcha
type the code from the image

Anonymous

Post_new_button or Login_button
Register

Painting your front door a striking color is risky, but it will really grab attention. Picking the right shade (and finish... Built on a rocky island in the Drina River, near the town of Bajina Basta, Serbia, this wooden house was cobbled together ... Large steel-framed windows flood the interior of this remodeled Michigan barn with daylight. The owners hired Northworks A... Edging formed with upside-down wine bottles is a refreshing change. Cleverly and artistically involving recycled materials... A Washington State couple called on BC&J Architects to transform their 400-square-foot boathouse into a hub for family bea... Similar to the elevated utensil concept, hanging your pots and pans from a ceiling-mounted rack keeps them nearby and easy... For windows, doors, and mirrors that could use a little definition, the Naples Etched Glass Border adds a decorative flora... The thyme growing between these stepping stones adds a heady fragrance to strolls along this lush, low-maintenance garden ... Decoupage is an easy way to add any paper design to your switch plate, whether it is wallpaper, scrapbook paper, book page... Twine lanterns add pops of crafty—but sophisticated—flair to any outdoor setting. Wrap glue-soaked twine around a balloon ... When securely fastened to a tree or the ceiling of a porch, a pallet and some cushioning make the ideal place to lounge. V... Reluctant to throw away any of those unidentified keys in your junk drawer? Hang them from a few chains attached to a simp... A stripped-down model, sans screened porch, starts out at $79,000. Add the porch, a heated floor for the bath, and all the... Salvaged boards in varying widths and colors make up the dramatic accent wall in this attic space. The high-gloss white of... This garden shed has been decked out to the nines. Designer Orla Kiely created the intimate home for a flower trade show, ...
Follow_banner_a
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon
 
webapp2