Do I need a sandy pillow under foundation or on it can you save?

FROMtroitelstvo - not cheap. Even if you do not use hired labor of builders (who usually eats up 50-60% of the budget), and build everything yourself, spending on construction still are enormous.

IN such circumstances, the question arises - whether you want to make a pillow of sand and gravel under the foundation or is it a waste of money? I answer at once - you need to, and Article deployed prove it. Go!

By the way, at the end of the article, I still tell one way to save on the pillow, so read up to the end!

In order to judge the appropriateness of sand bags, we must first understand what function it performs.

-1- Pillow aligns the bottom of the trench beneath the strip foundation to the future rigid structure did not go on a break

-2- The pillow distributes the weight of the house, blocking the soil compression and shrinkage at home

-3- Sand bed serves to divert water away from the foundation (blocks rising moisture from the soil).

ANDso, it is obvious that without a sand cushion under the foundation of any type can not do, and the savings it will be very costly in the future. The thickness of the sand cushion depends on the structure of the estimated weight and the type of soil beneath it, but if you are looking for some universal thickness the 15-25 cm pillow under the foundation is usually sufficient for a standard house of 100-150 squares.

ABOUTdnako how can save its construction, if the budget for the construction minimum?

Clean river sand can be replaced by a mixture of sand and gravel fines - it perfectly fulfills the function of drainage, but is much cheaper.