lateral water pressure on wall

If your building department has abrogated its responsibility, this is what CON MEN are allowed to do to your home…”, U S Army Corps, lateral soil pressure, backfill with gravel etc etc weight of water in the soil, The take away I am getting is walls are typically designed for 1.) FYI - I attached a graphic showing a curtain drain to intercept surface and subsurface water flow in a hillside lot. Why is there 5GB of unallocated space on my disk on Windows 10 machine? Powered by Discourse, best viewed with JavaScript enabled, hydrostatic lateral foundation wall pressure, https://www.youtube.com/watch?v=5dpGpiB7kQI, https://www.youtube.com/watch?v=AyVA73ILPUM, https://www.youtube.com/watch?v=Q7jprh5f2p8, https://www.youtube.com/watch?v=h-GaOiWZPYM, Basement Wall Failures - Donan - Forensic Engineering Experts, Forces Harmful to House Foundation & Footers - Ask the BuilderAsk the Builder, http://www.amherst.ny.us/pdf/building/soilsstudy/TOASFS_section3.pdf, https://www.youtube.com/watch?v=jLjltBxHKfU, https://www.youtube.com/watch?v=INFPk66SG1g, https://www.youtube.com/watch?v=cLzdt6wkS24, https://www.youtube.com/watch?v=AHqScpQQqZI, https://www.youtube.com/watch?v=3KFycoizC84, A Definition | Colorado Geological Survey, https://www.youtube.com/watch?v=c4Ozr64HKsc, https://www.youtube.com/watch?v=owwskmlN388, https://www.youtube.com/watch?v=FK6PW6AyHig. I don’t claim to have the solution to every single homeowners problem, to every single leaky basement or crawl, NO, but i do claim to have most homeowners solutions, dang skippy. I want to find the maximum design lateral pressure such a wall must resist in the presence or absence of built-up hydrostatic pressure, and the height above the lower ground level at which that pressure should be taken as being exerted for calculation purposes. Seems like one would need to improve performance of existing exterior perimeter footer drain tile. Using gravel as backfill is a superior way to relieve wall pressure from native swelling/expansive soils that the builder may have used instead, Using gravel as backfill provides a superior low resistance path for water next to the foundation wall to get to a footer drain tile below. Where are all the supposed problems of this accumulation? If so, any bricks below grade? If you get moisture/water on your wall when soaking the foundation wall (below grade) then I’d calla few peeps and tell them you would like the corner waterproofed, not 1/2 the wall, not the entire wall, the corner. Since your aren't analysing the wall yet, we will keep that for later. Active vs. At Rest vs. Pore water pressure 4. For DECADES on many, many houses… throughout many long, hard rains, water has gone through the soil above the drain tiles and eventually got down there AND below the tiles, alongside the footings etc. And so some are going to try and tell me, these interior chumps are honest experts??? Mike, this cost $$$$$$$ an interior drainage knothead system was installed, then the wall bowed in, more cracks etc. I am assuming my interior system was at least doing a good job of preventing water table from building up too high underneath my slab … at least at that point. As an FYI, John (aka, Mark) is an expert at sealing basement water entry in SE Michigan…and, you would do well listening to his advice. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. But realistically that’s a difficult task, so the next best solution is to minimize the water that reaches the foundation and to quickly drain any water away that does. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. There is no benefit IMO in allowing water to accumulate near the foundation wall. Thanks for the additional video and comments. Making statements based on opinion; back them up with references or personal experience. Saturated soil can force water through very small, hairline cracks in poured walls, “IF” there is a rod hole in the area you see moisture 5’ up from floor, you’d have to look, check… you may not, just bringing up the possibilities, but if you do then it may be deteriorating and allowing the water in, in that area 5’ up. The Yoder article you provided talked about the dangers of this water saturated soil pressure causing future cracks which is why I am concerned and want to better understand and quantify the problem/risk before evaluating solutions. Come on this board aaround 12 years ago, have sincerely tried to help anyone who asked for it or those searching for it and every now n then I catch some nonsense from some who are playing games or have never guaranteed their recommendations to homeowners and those homeowners spent $$$ and the supposed solution didn’t solve their problem. https://www.youtube.com/watch?v=FK6PW6AyHig) Exterior waterproofing of a foundation wall is a superior way to keep water from entering my basement through cracks below grade in m foundation wall. Wall cracks due to external soil pressure are due to poor wall design IMO. Have never had any problem that some bring up time to time about what if there are no drain tiles or the water needs a place to go or it only works if the drain tiles accept it, say again, NO problems…anywhere, throughout 40 years. Some would answer, ‘Oh they didn’t dig the little trench deep enough or they used the wrong drain tiles in the trecnh’ etc etc, NONSENSE. Well, if 1+ openings in the boat occurs aka hits an iceberg! The density of water is much less than most soils (64 pcf) however its lateral pressure coeffcient is = 1.0 so the Equivalent Fluid or Lateral pressure is 64.5 psf/ft which is higher than most soils in an active pressure case. On some of the jobs, the soil was wet/moist most of the way down and on some the soil was wet, saturated all the way down… whether it just had rained heavily… or not. The more water you add to dry soil the more fluid like it becomes. I live in MD an will do flood test this weekend. Let’s assume the external crack is below grade and I find a reputable company out here to properly seal it. ... to determine the lateral pressure caused by the surcharge loading. So unless you live in a desert every builder and homeowner has to deal with water. The movement of the wall is resisted by the front soil and exerts a lateral pressure on the wall, in a direction opposite to that of active earth pressure, as shown in Fig. The equations for the maximal pressure are the same for each side: $ q_{clay} = k * \gamma_{clay} * H \\ q_{water} = k * \gamma_{water} * H $. Why doesn't a mercury thermometer follow the rules of volume dilatation? How can I label segments of a smooth curve through some nodes? Randy, just asking, so your answer to leaky basements is a curtain drain and adding soil, regrading, pitch n slope? You guys have been great and I have been doing much more reading as a result. Homeowners with leaky basements are told ALL KINDS of crrrrap, lies, misrepresentations etc, yes they are. endobj What about those foundation walls that were backfilled with most or all… SAND? hahahhaa Why is the basement still leaking and more mold? I'm expecting the answer to depend on the characteristics of the specific clay to an extent, but I can't work out which characteristics are critical and how much they affect the answer. There are no buildings or other sources of pressure on the soil other than its own weight and soil mechanics, and hydrostatic effects of any water it contains. Even if it were possible to keep most or all water away from entire depth of a wall, from getting under foundation walls and footings imo you wouldn’t want to. A retaining wall 6m high and 2.5m wide retains water up to its top. Specifically I think what I'm trying to find is the maximum design lateral pressure exerted by the soil and any ground-water on the wall, and the point at which that pressure is exerted for calculation purposes (a) if there are ample weepholes/drainage, (b) if there are no weepholes/drainage. All due respect but you wanted some help, some answers on a leaky area in basement… i, some others have tried to provide that honest help and backed up what i could with other links or videos. but maybe not for 2.) https://www.youtube.com/watch?v=AyVA73ILPUM), Crack plus ‘other’ direct openings/gaps ABOVE the crack and to the right of the crack, deteriorating bricks n joints… https://www.youtube.com/watch?v=Q7jprh5f2p8). It’s quite easy for some to recommend a, b,c supposed solutions when they have never had to guarantee these basements won’t leak after the homeowner spends $, shtt wish i could do that. “IF” , you get water in on floor at–along the bottom of wall–floor meet or through the crack, your problem is the crack, waterproof the crack on the exterior…small job. 1.) Water pressure is the term used to describe the strength of water flow through a channel or pipe. 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