Today, the foundation blocks are displaced by a monolithic strip foundation. And it is much stronger, cheaper, moreover, it serves much longer. Just how to choose the desired concrete for the foundation for a person who does not understand anything about it at all? There are several options here. The easiest is to order a finished project where the soil is thoroughly painted at the construction site, what will be the load on the foundation, and, accordingly, which brand of concrete must be poured into the formwork. It is best to entrust such work to professionals. However, if you want, you can study the articles yourself. The main thing here is not to forget that the foundation is a very responsible business, since it holds the whole mass of the building, respectively, and the approach to this case should be thorough. Sooner or later, but the question of choosing a concrete brand will still arise and he plays an important role. Here you need to take into account several factors: 1. the weight of the building; 2. groundwater and the type of land on the site; 3. the presence of a basement in the building. Given all these factors, it is better to consult with specialists, as this is a fairly important moment in construction. If you are building a prefabricated house, then it is a M-200 brand, and if a house is made of brick or stone-M-350. The most important thing is that when pouring concrete, the mixture should be homogeneous and there should not be voids. Now there are a huge number of companies that have both concrete mixers and specialized workers, you can only choose. However, even after the work of work by professionals, it is necessary to monitor the work within 28 days. In no case should the concrete dry out, since otherwise it ceases to gain strength. With the right approach to all issues of laying the foundation, your building will last many more years.