The base from reinforced concrete blocks is often used for construction of individual houses. Actually such combined base represents derivative of monolithic integral construction, separated into several fragments.
Instruction
1. The main advantage of the bases from reinforced concrete blocks — the speed of their putting into operation, design can be loaded at once after mounting that considerably reduces construction terms. Arrangement of the base from reinforced concrete blocks — one of the fastest mounting modes of foundation of the building.
2. By means of factory foundation blocks it is possible to collect the basis of any complexity. In assortment of manufacturers there are blocks both for mechanized, and for handwork of builders. Blocks are equipped the system of special loops which facilitate their laying in holes.
3. The blocks made industrially undergo certification, apply the checked and quality materials to their creation, they are strong and durable. At the plants release blocks of different types and dimensions therefore it is easy to pick up the necessary products for specific construction.
4. Reinforced concrete blocks which are used for construction of the combined bases have well proved in negative weather conditions. Add special frost-resistant structures to concrete therefore such blocks can be used for base construction in sour or ice soil, even in conditions by spring of permafrost.
5. One of base minuses of blocks is its rather high price, it is more expensive, than monolithic, at the same time has before it no clear advantages. One more shortcoming — at the combined bases from reinforced concrete is a lot of seams between blocks that complicates works on design waterproofing.
6. Reduction of terms of construction is carried out due to deterioration in other indicators. It is necessary to consider that reinforced concrete constructions have considerable weight, for their mounting it is necessary to use special equipment. At production of blocks, their transportation and laying it is necessary to involve large number of people and the expensive equipment.
7. It is the most rational to use blocks from reinforced concrete to construction of the bases of 9-12-storey buildings, in low construction their bearing capacity will be used no more than for 10%. Material inputs at construction of the combined base for 50-75% exceed expenses on construction of monolithic construction.
8. The continuous footings created on the basis of concrete blocks have smaller durability, than monolithic. They cannot effectively maintain the increased loadings, at the draft of the basis there are irreversible deformations of framework that can lead to building collapse.