Magazine of civil engineering, №7(9), 2009
The day of Finnish energy audit in RussiaOn November, 9th at Consulate general of Finland in Saint-Petersburg the seminar "A day of instruction in energy audit. The praxtice and the results of finnish programmes in the field of energy audit" was held. The representatives of finnish companies shared experience in new field which is new for Russia yet.
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The low-rise construction in the Leningrad regionOn November, 19th the Leningrad region Government with Saint-Petersburg Construction Centre conducted the conference "The developpment of low-rise construction in the Leningrad region, preparation of the engineering infrastructure and application of new building technologies".
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In the article the contemporary air conditions and their influence on
the human organism are analysed. On the base of previous researches
which were described in a series of articles (look issues №1-6, 2009),
a conclusion about the necessity of effective ventilation systems is
made and the general recommendations are given.
V.M. Vasil'ev, A.V. Malkov
In view of the active developpment of Ufa, including the field of
construction, the reconstruction of municipal sewerage was decided to
do. The project was conducted by a company from Saint-Petersburg.
Project's particular qualities are described in the article. The main
innovational element of this sewerage is the common system of tunnel
V.S. Slepchenok, G.P. Petrakov
The contemporary heat supply system of Saint-Petersburg based on on the
radial metal pipe network is considered. It is characterized by high
damageability, big heat loss and as a consequence by insufficient
economy of water heat systems in the maintenance stage. The energy
saving and economical technologies for the reconstruction of heat
networks are given.
In the article the possible use of concrete heaters in the building
heating systems is considered. The results of computer simulation
and thermotechical tests of several concrete heaters samples are
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The influence of the different plasticizers, fine mineral additives and
water on the concrete shrinkage deformation is given it the rasults of
experimental research. The adjusted mathematical modelling of the
concrete shrinkage deformations are produced. The modified concrete
shrinkage value i s described in connection with the type of the used
cement, type of chemical modifier, concrete mobility index, compression
strength of the concrete in the age of 28 days.
A.V. Ulybin, S.D. Fedorov
Ultrazonic method of construction inspection is considered by the
example of a building damaged by fire. The method lies in the
determination of concrete strength in every point of sample by the
velocity of ultrasonic waves passing. The methods and results of
measurements are described.
Voilokov, A.M. Gorb
Often the influence of handling
machinery is one of the most important in the calculation of industrial
The authors conducted theoretical studies and got corresponding
formulas. The necessity of taking into account of these influences when
constructing the floors is proved.
investigating the mode of deformation and stability of shells under the
of sustained load it is necessary to take into account that with time
property becomes apparent in the material. It leads to the decrease of
carrying capacity discovered in the elastic behavior of material.
Often thin shells are
reinforced by ribs to increase its rigidity. When investigating the
of these shells it is important to conduct the verification of their
as nearby the buckling loads the stress level for the majority of
exceeds the permissible level.