Reconstruction of the Zarechye boiler house, Noginsk

Scope of work

• 12 boreholes 10 to 24 m deep — 217 linear metres of cased drilling
• 11 trial pits by the foundations of the existing building and 6 CPT soundings down to 15 m
• sampling of 23 undisturbed cores and 57 disturbed sand samples, plus 3 soil and 3 groundwater samples for corrosivity towards concrete and metals
• 41 triaxial compression tests, 6 shear tests, physical properties on 80 specimens
• reconnaissance survey of the territory — 1 km, collection of archival materials from previous surveys

Results

1. Geotechnical conditions — complexity category II (medium).
2. Beneath made ground containing construction debris up to 2.8 m thick, five engineering geological units have been identified down to a depth of 24 m: medium-grained and coarse alluvial sands (EGU-2 and 3, deformation modulus 25–28 MPa), dense fine sands (EGU-4 and 5, 37–38 MPa) and hard Jurassic–Cretaceous sandy clay (EGU-6, 38 MPa).
3. Groundwater was encountered in all boreholes at a depth of 0.5–2.8 m — the site is naturally waterlogged, and substructure waterproofing and site grading are recommended in the design.
4. Groundwater is slightly aggressive to W4 concrete and moderately aggressive to metal, while made ground is highly aggressive to steel — underground structures require protection.
5. Standard frost penetration depth is 1.34 m for sands and 1.29 m for made ground; the sands are non-frost-susceptible. No karst hazard — Stability Category VI.

Scope of work

• 1:500 engineering topographic plan for a 1.6 ha site, contour interval — 0.5 m
• horizontal and vertical survey control network: 2 temporary markers tied to MOBTI base stations, coordinate system — MSK-50, height system — Baltic
• detection and tracing of underground and overhead utilities across 1.6 ha
• approval of the completeness and accuracy of utility plotting with operating organisations, registration of the report in the Moscow Region ISOGD

Results

1. Ground surface elevations are 128.9–129.7 m AOD; the site is flat, located on a terrace of the River Klyazma.
2. District heating pipes, gas pipelines, water mains, sewers, power networks and telecommunications lines are plotted on the plan; the completeness and accuracy of plotting have been confirmed by the utility owners.
3. The technical report was registered in the ISOGD of the Moscow Region on 09.07.2025; following incoming quality control, the report was revised and reissued.

Scope of work

• 10 topsoil and subsoil samples to a depth of 4 m: heavy metals, petroleum hydrocarbons, benzo(a)pyrene; 2 samples each for microbiology and parasitology
• reconnaissance gamma survey of 1 ha, dose rate at 10 control points, 10 samples for radionuclides, radon flux density
• interpretation of satellite imagery, enquiries to regulatory authorities, schematic map of environmental conditions and zones with special conditions for land use (ZOUIT)

Results

1. Soils and ground down to 4 m fall into the 'permissible' contamination category and are 'clean' in microbiological and parasitological terms; unrestricted use.
2. The radiation environment is normal: no anomalies, Class I soils, and radon flux density within regulatory limits.
3. The site falls within the aerodrome environs of Chkalovsky Aerodrome and the sanitary protection zones of three neighbouring industrial facilities — these restrictions are shown on the ZOUIT map.

Scope of work

• climatic summary from Moscow VDNKh and Pavlovsky Posad weather stations: temperatures, precipitation, wind, snow, glaze ice
• design and characteristic parameters for engineering design under SP 131.13330 and SP 20.13330
• certificate on hazardous hydrometeorological phenomena in the area

Results

1. Climatic sub-region IIB, temperature of the coldest five-day period −29 °C, absolute minimum −43 °C.
2. Snow region III (1.5 kPa), wind region I (0.23 kPa), ice region II.
3. Westerly, southerly and south-westerly winds prevail, with a mean wind speed of 1.6 m/s; no hazardous hydrometeorological phenomena affecting the project were identified.

Scope of work

• 11 trial pits by the foundations, non-destructive concrete strength testing, reinforcement scanning by magnetometry with verification opening-up, and tilt and deflection survey
• structural survey of the boiler house and extension: foundations, walls, columns, beams, roof girders and slabs, roofing, staircases
• structural check calculations of load-bearing capacity for columns, beams and slabs under actual loads
• survey of a chimney and above-ground flue duct within the reconstruction zone of influence, including an assessment of maximum permissible additional deformations

Results

1. The boiler house building is generally in a serviceable condition: foundations, walls, columns, beams and slabs are serviceable, whereas the roof beams in one bay, part of the roof covering and the external fire escape stairs are in a limited serviceable condition.
2. Based on the building survey results, it was recommended to strengthen five roof beams with steel jackets, restore the heads of two columns, replace the roof covering and fire escape ladders, and construct a perimeter apron. The permissible additional settlement is 3 cm and tilt is 0.001.
3. The chimney on a 12.7 m diameter monolithic slab and the above-ground flue duct on pad foundations are in a serviceable condition; their maximum permissible additional deformations within the zone of influence of the new construction have been determined.

Scope of work

• compliance assessment report on technical regulations to obtain a permit for deviation from maximum permitted construction parameters
• analysis of the land use and development rules (PZZ), GPZU, EGRN records, and planning restrictions of the plot
• land plot layout plan at 1:500 showing zones with special conditions for use of territories

Results

1. A 1 ha plot in a utilities zone, maximum height 3 storeys; the new boiler house building does not fit within the minimum 3 m setback from the northern plot boundary.
2. A technical report on compliance with technical regulations for reducing the northern boundary setback was prepared as the basis for a deviation permit under Article 40 of the Urban Development Code.