ENGINEERING-GEOLOGICAL SURVEYS

The company «PETER GEO» performs a full complex of engineering-geological surveys for construction of buildings and structures of I and II level of responsibility, roads, Railways, pipelines, power lines, private houses and cottage settlements. All work is performed by experienced doctors with many years of experience with the use of modern equipment. We occupy one of leading places on the market research of the North-West. Trusting to perform engineering-geological survey us, you get a quality guarantee and 100% result.

Engineering-geological surveys are carried out to study the geological conditions of the territory of future development. Engineering-geological surveys provide:

  • Optimization of the choice of the type and depth of foundations;
  • The forecast of possible flooding areas
  • Evaluation of interaction «compressible strata» with the projected structure
  • To optimize costs

When determining the required scope of engineering-geological surveys are guided by the following regulations:

JV 47.13330.2012 — Engineering surveys for construction. The main provisions
SP 11-105-97 Engineering-geological surveys for construction
JV 24.13330.2011 — Pile foundations
TSN 50-302-2004 — Design of foundations of buildings and structures in Saint Petersburg

The composition of geological engineering:

  • collection and processing of survey materials of prior years
  • obtaining permission to conduct research in the MGO CAB or GAU «State expertise of Leningrad region»* and coordination of the points of drilling with the balance sheet of networks.
  • route surveys (reconnaissance)
  • drilling engineering-geological boreholes, sounding, sampocak
  • geotechnical soil testing (sеlеctiоn of monoliths, samples of soil and water for laboratory research)
  • field experimental work (static and dynamic probing, stamp tests).

Hydrogeological research:

  • Express pumping from wells
  • cluster and single pumping from wells
  • nalive, injection in wells, nalive in the pits.

Stationary observation:

  • regime observations of groundwater level variations
  • modal geophysical and tracer techniques.

Laboratory tests:

  • study of physical and mechanical properties of soils
  • chemical analyses of groundwater.

Cameral stage:
Processing and analysis of obtained data, the result of which is a technical report about engineering-geological researches

The basis for the work, is a signed agreement with the attached terms of reference (document reference) that spells out the scope of work required for passing the examination, taking into account the stages of design and level of responsibility of the facility.

Engineering-geological surveys for area objects.
To areal types of the objects include such structures as:

  • a dwelling house;
  • shopping complexes;
  • Parking lots;
  • warehouses;
  • cottage villages.

Geological surveys for construction and engineering area features include:

  • preparation of terms of reference (document reference) the engineering-geological surveys.
  • open the notification on carrying out engineering-geological surveys MGO CAB (geological-geodesic Department of the Committee for city planning and architecture), if necessary, obtain an order GATI (State Administrative Technical Inspection of St. Petersburg) for the excavation;
  • drilling engineering-geological wells;
  • static or dynamic probing of soils;
  • laboratory work (determination of physico-mechanical properties and corrosion activity of soils);
  • office processing of field materials, drawing up a Technical report about engineering-geological conditions of the study area;
  • the passing of the state examination Technical report.

Engineering-geological surveys for design and construction of linear structures
Are called linear structures of great length, but occupying a relatively narrow strip of the earth’s surface. To linear facilities include:

Railways and roads;

  • transmission lines (power lines);
  • the communication line (LS);
  • objects radio;
  • pipelines.

Geological surveys for linear facilities include:

  • drilling engineering-geological wells;
  • laboratory work (determination of physico-mechanical properties and corrosion activity of soils;
  • office processing of obtained materials, preparation of Technical report about engineering-geological conditions of the study area
  • the passing of the state examination Technical report.

Engineering-geological surveys for design and construction of a residential country house (cottage)
Engineering-geological surveys for construction of country houses, garages, gazebos, SPA-complexes, other buildings, are held for the purpose of studying engineering-geological conditions of the land, which will stand the house or structure.

Engineering-geological surveys for design and construction of a residential country house (cottage)
include:

  • drilling engineering-geological boreholes to define the geological section, groundwater levels, sampling of soil water;
  • laboratory work to determine the physico-mechanical properties of soils
  • laboratory work to identify chemical properties of soils and water;
  • office processing of field and laboratory works, preparation of Technical report about engineering-geological conditions of the study area

Depth of exploratory drilling depends on the type and depth of Foundation height of the house and built up relief platform
The scope of engineering-geological surveys under a private house depends on the Foundation type and anticipated loads.