How to build a leakproof waterfall?
As you can guess I want to find out how to build a leakproof
waterfall. So if anyone has any tips they would be greatly appreciated. Firstly let me explain my concept. I want to build a natural rock waterfall about 12 feet tall and about 16 feet wide at the top. I'll be using large rocks (grey limestone) which will be at from about 2 foot long , 2 foot wide and about 10 inches thick upto about 6 feet long and 3 feet wide and also about 10 inches thick. We have a crane and a large telescopic lifter so we'll be able to move and place them without too much back ache. I was planning to first build a large mound out of topsoil and have the digger driver roughly shape out the area for the rocks, essentially some shelves to hold the rocks on. Then I was going to cover the entire area with soft sand, cover this with a protective fleece and then lay a layer of butyl rubber liner, then another layer of protective fleece on top of the liner. Then before we placed the rocks I was going to spray the underside with expanding foam, just to make sure the liner didnt get punctured by the weight of the rocks. Next I planned to use a cement mix (with some kind of polysomething aditive to prevent cracking) with a final layer of waterproof paint. The idea is that all the water from this waterfall will flow into a large pond which we plan to construct similarly (sand, protective membrane, butyl rubber liner, protective fleece, concrete, waterfproof paint). I know this is an abitious project and a reasonable budget has been set aside but we want to get it right first time. I discussed the pumps and filtration systems already and thats solved. My worry is will this layered construction method work or should I try some other method. Bottom line is whatever method we choose it has to work 100% from day one. Any thoughts greatly appreciated. |
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