Do we need geological survey for the construction of a private house - the answers

With the growth of the individual building owners of land parcels in practice faced with a number of issues that previously or have never heard of, or have this very vague idea.One of them - geological survey for the construction work.Do I have to deal with them, and pay for it pretty solid money?

Why is this necessary?

foundation for any construction cost is very large (sometimes up to 40%) of all construction costs.No point to explain that its reliability depends, primarily, durability structures.But how much it will have to spend, given the prices of rebar and cement?

If the base to make massive, "in reserve", such construction will cost "a lot of money."In addition, and how to behave in the soil in this place?It does not begin with the time sink of excess load?At the same time, the excessive (and sometimes unjustified) savings will lead to the fact that the design will stand for a long time precisely because of the base damage.

In addition, at the design stage is necessary to determine the type of foundation.After all, he selected "under" specific circumstances.The most common view of its low-rise building with a ribbon.But he does have some limitations on the installation conditions, because of maintenance-free operation of the foundation depends on the configuration of underground aquifers, the depth of soil freezing and the like.In addition, you need to decide with his penetration.

additional strengthening of soil required at some sites.To what extent, in what way to do this (technique) - to these and similar questions can be answered only by a professional.

There are a number of issues on which it is difficult to make an independent decision.For example, what type of septic tank at a given soil can be installed, whether to equip the drainage system of the site is necessary and many others.

clear that it is impossible to independently consider and appreciate all the nuances of the preparatory activities.It will have to analyze not only the results of research obtained soil samples.In order to get the full picture, you need to study more and some archival materials.For example, seasonal temperature fluctuations, changes in the depth of groundwater (and trend), as well as a whole series of specific data that are clear only to professionals.And you must also be able to make them the basis of a correct conclusion.

If built "by eye", focusing only on the owners of the adjacent plots, it is a risk that the money, time and energy will be wasted, because after a short period of time have to deal with major repairs, and the whole house.After all, if the "lead" the foundation, then it will have an impact on the rest of the structural elements.Cracks in walls, the deformation (or destruction) of the roof system, flooding the basement - just not listed.

Therefore, the conclusion can be only one - for small buildings (garage, barn, sauna) we can restrict, for example, and melkozaglublennym strip foundations as neighbors.But if the house is built, the services of professionals in the field of geological surveys is better not to neglect.

Price question

To the reader could get a general idea of ​​how much to invest in the construction before the purchase of materials and the organization of works, lists the approximate rates for surveys.Take into account that not all the specialized organizations that provide this service to the population, carried out a range of activities.Its cost includes not only the purely mechanical work (ground excavation), but a number of others - laboratory testing and registration of all accounting documentation.

price is largely determined by the depth and the number of wells at a specific site.

• to 8 meter in 2 pieces.expect to pay about 33 000, 3 pcs.- 6 thousand more.
• drilling to a depth of 10 m 2 is behind the pit - about 36 000, 3 - 40 000.
• 12-meter wells: 2 pcs.- 40 000, 3 pcs.- 50 000.

Practical recommendations

, directly related to the drilling process (its price) is more or less if a package of measures is clear, firstyou enter into a contract with a contractor, you need to immediately clarify what else is included in the cost of the work and how much will have to pay more than this?The fact that later can "float" the following items in the budget, as the remoteness of the site, drilling complexity factor and a number of others, some of whom initially Contractors "modestly" silent.We, as customers, should first of all interested in the final amount of the estimated costs.

way, such as a component of the laboratory studies, is one of the most expensive.Practice shows that it is more expedient to enter into a contract directly to the full range of necessary work in one of the Contractor than trying to save and pay for their phased conducting various structures.

on the site owner can erect any structure.But it will not be registered as a living, if it has not let down a number of utilities necessary for life support.And this is - a somewhat different type of work, which has its own rates, and pay for them separately.

For example, if there is a question about the gasification of the house, the soil investigation at the track will cost 25 to 45 thousand rubles.If necessary, arrangement of drainage system - about the same amount (calculated per 1 ha area).If you plan to build an artificial body of water - is still around 1 500 rubles / mp.

On this basis, it is necessary to visit the offices of several organizations involved in geological research.For what?

First , find out how much it will cost the full range of necessary measures and whether they do them all?

Second , find out what in the organization are discounts, there are facilities provided for certain categories of people (for example, veterans of labor)?

Third , specify the turnaround time and getting paper work.

And only then, by comparing the totals and temporary "settings", you can draw a conclusion about the advisability of writing a contract with a particular contractor.

probably does not make sense to explain, though, and should remind that it is necessary to make sure whether the firm a license for such activity and not expired if its expiration date?

And one more thing, which does not take into account all, but we think it is important.Any profile specialist confirms that the ground shifts, and hence the load on the base, caused by a number of external factors.For example, laying near the site of the highway or industrial piping, large-scale construction, deployed nearby, are among them.

Since any house built on decades that such a perspective is provided.The necessary information on the law is available to any taxpayer, without any restrictions.Suffice it to refer to the relevant body in charge of urban development issues in the area.So you need to ask the contractor if his experts consider all this in the preparation of the final documentation, or have this question to figure out on their own?