08.05.2019
Reception of indications of counters of hot and cold water supply
The feasibility and benefits of installing water meters is beyond doubt. To determine the amount of payment for the resource is required ...
08.05.2019
Calculation of the area of air ducts of various shapes and fittings
When constructing a ventilation system, it is important to correctly select and determine the parameters of all elements of the system. Need to find ...
07.05.2019
Chemistry of combustion processes. Explosion energy
Explosive energyThe main advantages of explosives over other energy sources are compactness, transportability and ...