SGP company executes a whole package of works for its clients directed to selection of the most optimal and expedient design solutions in construction of facilities of any complexity.
The company is accommodated with its own innovative instrumentation pool and up-to-date laboratory for surveying.
Scope of work is determined by survey program based on preliminary specifications from the customer accounting for designing stage, complexity of natural conditions and responsibility level of buildings and structures.
Topographical surveys
SGP executes topographical engineering surveys for construction that are presented by a package of measurements, calculations and constructions in drawings and at the site, ensuring correct and precise location of buildings and structures, construction of their structural and planned components in accordance with design geometrical parameters and regulatory documentation requirements.
SGP executes the following geodetic works:
- creation of horizontal location and elevation control at construction facility;
- facility affixment to local coordinate system and absolute system of elevations;
- vertical and horizontal planning of construction site, area construction facilities, with scope calculation of earthwork operations;
- staking out of main construction lines, parts and structural components of buildings and structures with height of up to 100 meters inclusively;
- staking out of design lines inside buildings and structures in a unified coordinates system;
- vertical planning of buildings and structures;
- high precision determination of perimeter, floor space, volume of construction facility of any configuration;
- surveying works at installation and erection of plant equipment, tools and instrumentation.
- manufacturing of topographic underlay for linear facilities design;
- cameral and field location of linear construction facilities;
- staking out of design lines of linear construction facilities, under- and overground communication lines.
- compilation of topographic maps with the scale of 1:200-1:5000 in electronic and graphic formats;
- compilation of base maps of underground communications.
- as-built post construction survey with identification of design deviations;
- geodetic monitoring of facility geometrical parameters in course of construction.
Geological surveys
Geological surveys provide opportunity of integrated assessment of engineering geological construction area conditions for the facilities designed (including condition, composition and properties of soils, seismicity, geomorphological and hydrogeological conditions, natural conditions complexity assessment with consideration of hazardous geologic phenomena).
Based on results of geological surveys the decisions are made — regarding type of foundations and mounting bases for underground communications, regarding necessity of construction site protection from adverse environmental impact etc.
Engineering geological surveys include:
- Collection and processing of previous years’ survey materials;
- Territory reconnaissance;
- Drilling of exploratory holes or pit drifting;
- Geophysical exploration;
- Field soil explorations;
- Hydrogeological monitoring;
- Chemical analysis of underground water;
- Cameral processing of materials collected;
- Forecasting alterations in engineering geological conditions;
- Hazard and risk assessment of geological and engineering-geological processes;
- Compilation of a technical statement on engineering-geological conditions of the territory.
By survey execution results the company accommodates the customer with detailed report and annexes:
In text:
- Catalogue of coordinates and elevations of mouths;
- Description of wells;
- Soil properties laboratory research results and their statistic processing;
- Assessment of potential territory underflooding;
- Statement on corrosion behavior of soils;
- Chemical analysis of water;
- Statistic processing of soil field tests;
- Calculation of ultimate resistance for driving piles;
- Data on methods, means and metrological parameters of measurements;
In graphics:
- Layout plan of wells and engineering-geologic lines’ sections;
- Legend to engineering-geologic sections;
- Engineering-geologic sections;
- Static penetration test diagrams;
- Soil testing results.
Environmental surveys
Engineering-environmental surveys ensure integrated studies of natural and production-induced territory conditions, its practical economic use and social sphere.
Engineering environmental surveys are executed to assess actual condition and forecast possible alterations in natural environment under anthropogenic impact. Surveys are executed in order to prevent, reduce or eliminate hazardous and adverse environmental and other related effects and maintain optimal residential conditions for population.
The surveys include:
- Collection, processing and analysis of published and library materials and data on natural environment condition, search for similar facilities functioning in equivalent environment;
- Route observations with description of natural environment and landscapes in general, sources and evidence of pollution;
- Soil research;
- Soil vapor surveys;
- Environment hydrogeological surveys;
- Environmental sampling and pollution assessment of soils, ground, ambient air, underground and surface water;
- Chemical analytical research in laboratory;
- Flora and fauna research;
- Research and assessment of radiation environment;
- Research and assessment of physical effects;
- Sanitary-epidemiological and biomedical research;
- Social and economic research;
- Cameral processing of materials and report generation.
Hydrometeorological surveys
SGP company executes hydrological surveys with the purpose of integrated research of hydrometeorological conditions of construction territory and forecasting of possible alterations in such conditions resulting from interaction with the facility designed. This allows receiving necessary and sufficient materials and data for making substantiated design decisions.
Scopes of hydrologic and meteorological surveys are determined depending on type of facility the survey is executed for, exploration status of the water body regimen and climatic conditions of the territory.
Hydrometeorological surveys include:
- Collection, analysis and compilation of hydrometeorological and map territory coverage materials;
- Reconnaissance of engineering survey area;
- Engineering hydrographic surveys (water survey (depth measurements), hydrological survey (profiling of current velocity and flow rates), alignment and leveling of morpho-section);
- Execution of hydrologic and morphometric works in the areas of linear structure routes crossing water bodies, as well as valley parts of routes located in regimen affected area;
- Research of water bodies regimen (rivers, lakes, water basins, temporary streams, in-shore and shelf sea zones);
- Sampling and analysis of water and bottom deposits;
- Climatic conditions and separate meteorological characteristics;
- Research of hazardous hydrometeorological processes and phenomena;
- Industry-induced alterations of hydrologic and climatic conditions or their separate parameters;
- Cameral processing of materials determining design hydrologic parameters (determination of maximal and minimal flow rates, calculation of runoff characteristics distribution parameters and diverse reliability values);
- Determination of flow rates, stream stages with application of specialized computer programs;
- Compilation of technical report.
Results of reconnaissance research obtained in process of engineering surveys are used to solve the following tasks
- Detection of manifestation areas of hazardous hydrometeorologic processes and phenomena;
- Preliminary route zoning (in case of long mileage) by hydrometeorological conditions and selection of reference section;
- Selection of the most hydrometeorologically beneficial facility construction site (route direction) option;
- Selection of water body or its part for water consumption purposes;
- Selection of location sites for hydrometric section lines and hydrological and meteorological observation stations;
- Mark-setting of maximal water levels by traces of past floods;
- Specification of hydraulic characteristics of riverbeds and floodplains for control stations etc.