How to choose the rubble for the foundation - a necessary fraction brand and flakiness

Scope of this building material is extremely broad.But speaking in relation to the structure of the foundation, it is necessary only to specify, for any construction it is raised?A relative fractions of crushed stone for the foundation of a relatively short - for massive structures 20 - 40, for low-rise construction (1 - 2 tiers) enough 5 - 20.

digit indicates the linear dimensions of the granules, and material requirements defined relevant GOST (and theirquite a lot, for each product variety).But information given - is too simplistic explanation of the subject of this paper, and the use of it is not enough.Although, if only because the assortment of crushed stone is large enough and choose, taking into account the specifics of the application and the importance of the structural element of the building, as a basis, it is necessary still the best option.

Type rubble

This material is categorized according to the raw material, which was used in the production.The most durable is granite gravel, but its value does not fall clearly within the definition of "construction budget".Individual builders it is advisable to focus on the gravel variety of products, it is cheaper.For residential 1 - 3 storey building of brick or concrete is well suited.And in the case of the construction of light structures (eg frame, cellular concrete) is enough and cheaper rubble - lime.

Flakiness

Hearing this term, few people understand what is at stake.If it is to "decode" it is nothing more than "the degree of plane" granules.Products obtained by crushing different species, hence the fractions have different shapes - like a triangular stones, acicular, plate and so forth.On this basis rubble divided into 4 categories.From a practical point of view, for the foundation of a better fit cube-shaped pellets.Pros - convenient to stamp, and higher strength.

Conclusion

For construction of private residential building best option rubble - gravel (or lime) with grains from 5 to 20 mm cuboid shaped marks 1200 - 1400 .Moreover, the fraction must be different.In this case, the solution is poured seal better quality, hence its structure will have less voids.So, artificial stone will acquire the necessary foundation for the characteristics (especially, strength).