Correctly to choose the basis for the house from gazolikatny blocks, it is necessary to know in what feature of such constructions and what requirements are imposed to the base on which they will be located.
Instruction
1. Houses from gas concrete have the features: they have small weight thanks to rather light construction material and demand rigid base which will be able to compensate all motions of soil and to prevent cracking of porous gas concrete. Therefore for such buildings it is necessary to build the buried reliable basis.
2. What base is better for houses from gas concrete on unstable soil? Screw piles best of all will be suitable for such conditions. In what their advantage? First of all is the depth of laying of support. Piles screw in in soil until they are not reliably recorded in it. As a rule, the basis of support is 30-50 cm below than point of freezing of the soil. It provides guarantee that the house will not warp from influence of forces of rebound. Such base will be suitable absolutely for all types of soil, irrespective of depth of its freezing and level of underground waters. Installation of screw piles is optimal solution and in case relief on the site difficult with considerable height differences.
3. The base on screw piles differs in the high speed of mounting: it can be established in only one working day. Long time was considered that for the house from gas-silicate blocks optimal solution is the buried monolithic plate. But practice has shown that screw piles – more reliable and acceptable decision, especially for unstable soil with the increased humidity. In addition, such basis much cheaper and is more durable.
4. What base is better for houses from gas concrete on stable soil? The unambiguous decision – melkozaglublenny monolithic plate. Its big deepening is not required for the reason that on such platforms the seasonal motions of the soil are insignificant. In construction of this basis there is one feature: filling of plate – process long and labor-consuming. In addition, she has to "to rest in bed" some time before the device of the lower binding. Therefore if in construction of the house the speed of works is decisive factor, it is recommended to stop on screw piles.
5. If on the site underground waters are located highly (closer than 3 m from earth surface), the plate basis will require the device of ring or wall drainage. These communications will allow to take away surplus of water from concrete and to prevent its destruction from moisture surplus. It will be required to give due consideration and waterproofings of plate: to process it water-repellent mastic and to lay on gravel and sand "pillow" of cloth of roofing material in several layers.