construction

Wedeveloped an effective reconstruction system of the existing bridges with the expansion of the span clearance by different types of reinforced concrete imposed slab with protruding consoles without the extension of pillar. At the same time the beams are strengthened by the change of their static scheme from freely leaned to rigid or completely strangulated beam on pillars at the maximum preservation of the existing structures and provision of clearance and capacity required by the current design regulations of the new bridges.

The metal combined ceiling structures enable to cover the building with a span of 18-30 m by the inclusion of the joint operation of reinforced concrete slab.

Such structures have been successfully recommended themselves in installation of the exhibition center Lemberg (Lviv), SPAGeneva (Truskavets), Sportlife (Zubrivska Street, Lviv).

The use of lightweight metal structures is possible not only in new buildings, but also in reconstruction, in particular in installation additional ceiling within the existing building.

These domes are designed for temple construction. Their installation is supposed to be conducted without scaffolding. The domes structure is ribbed and consists of prefabricated rib-less reinforced concrete slabs of double curvature and rigid reinforced frames for reinforced concrete monolithic meridian and end ribs, which perceive all the loads during the installation.

Monolithiation of the ribs is conducted gradually from the bottom up to top till the height of annular ribs after installing the prefabricated slabs between them.

Collapsible frame of the new structure is developed to solve the problems of the affordable low-rise private housing construction, a significant decrease of its value (2-3 times), and construction and commissioning period.

New constructions are designed to solve the problems of road and urban transport due to the traffic intensity grow, especially in suburban areas of the cities with dense housing, and taking into account the possible need to accelerate the pace of construction of the bridges, flyovers, trestles and multilevel transport interchanges, at presence of difficult construction conditions using absolutely new constructive and technological decisions.

Due to physical deterioration and obsolescence, hostile environment impact on the existing structures of the industrial, public and residential buildings there is often a need to assess their remaining life, to reinforce them or at least to restore their carrying capacity. It is possible to achieve the economic effect from the increasing the exploitation time of the reinforced structures owing to the increase of their reliability in comparison with the modern methods.

Furnace for fire tests of the building constructions and thermo-physical tests of materials is designed as a box (4 m x 1.8 m) with an internal flame retardant layer. The walls have openings for fuel and testing equipment; in the bottom there are embedded items for fixing the construction under study.

Design of the ceilings using trusses and frames of different shapes combined by the system of horizontal and vertical connections between 24.0-48.0 m spans. There is a possibility of forming the spans up to 31 m long, where the multistory central part can be installed on the crossbars.

The construction material is steel S345 or S375.

The use of fiberglass reinforcement with 115 kN/cm² strength along with the concrete of S55/60 class and more, in the tensile region allows to significantly reduce the construction weight, its cost, and to improve the reliability and durability.

As a result of the pre-compression of the high-tensile reinforcing bars At-V in the marginal stage of the compressed elements there was made a maximum use of the strength characteristics of the high-tensile steel. The use of the mild steel elements (A-II; ВСт3кл2) in the spatial reinforced frames for receiving the compression load of high-tensile reinforcement also made it possible to fully use its compressive characteristics.