Best Of Column footing details pdf, It’s Free! Eng-Tips’s functionality depends on members receiving e-mail.
By joining you are opting in to receive e-mail. Promoting, selling, recruiting, coursework and thesis posting is forbidden. 2 members like this thread! Sorry, if this is a dumb question I’m an EE on the wrong board but will concrete blocks last underwater? After much review I’ve decided I need to fill in my basement with 3ft of pea gravel and make it a 5ft crawl space.
It is just too far below the water table and I cannot pay the electricity for two constant pumps. The floor has about 10,000 cracks and water just comes through making a stream from one end of my house to the sump crock. I’ve talked to four contractors in the area and I keep getting mixed information over what to do with the cement blocks. Half say I should fill the cores and waterproof the insides others just say just leave the blocks as is and they will last.
The house was built in 1999 it’s a 30×50 1500sqft ranch, the 10″ CMU blocks look to be in great shape from the inside no visible leaks, cracks or bowing in the blocks. So should I do something to treat the blocks or just let them under the water table? Better give us 2-3 days for someone to come along with answers for you. Conc blocks are usualy kept dry, though. Are you in an area where freezing will be a factor? If you let the water table remain so high, will frost penetrate to the water? This would reduce the life of the blocks.
How did your house get a building permit with gw so high? Or did someone regrade nearby, creating this problem? I’m in Michigan so it does get cold, but I don’t think frost will make it to the water table. Based on previous nightmares I don’t want to go into I believe the water will go up to about 20-25 inches. This gives 60″ for frost and I believe the Michigan frost lines to be about 42″. I plan on going up to 3ft which will put my basement about the same as my neighbor whose sump pump has only runs when it rains. Also, the water has traditionally gone down in the winter except for this one.
How it was built here I don’t really know. First off it’s a small village in the country and from what I gather they didn’t really jump on the bandwagon of ‘formal’ building codes until the early 2000’s. I ‘m in the lowest spot around, but I believe the problem was exacerbated by the subdivision that was put in behind my house in 2002. It brings the whole subdivisions water to a pond 2-3 lots away and I believe raises the ground water faster than it did before. I’ve talked with a local civil and he said there wasn’t much I or even the county could do to divert the water. There is also some details about the furnace and hot water heater I need to take care of.
Back in my Joe-builder days . On several projects with bad ground water we installed what is essentially a dry moat filled with gravel. This was dug completely around the house but maybe 10′-15′ away from the house. This was dug below the footing elevation and drain tiles installed just like the basement footing should have. Problem with this is, you have to have somewhere to run the drains. Over time, the water table should go down.