19 February 2024
Now, in almost all cities of the country, protective concrete shelters are being built - monolithic structures made of concrete and reinforcement to protect people from debris, shock waves, cluster bombs weighing up to 30 kg and direct hits from some shells.
A mobile concrete shelter is made with walls 25 cm thick and a ceiling 30 - 40 cm thick. Additional reinforcement with a double mesh 50x50 and reinforcement 12 is aimed at ensuring that the concrete can withstand impact.
To build the simplest reinforced concrete shelter, you need formwork.
What formwork is needed to build a shelter?
If you want to make a concrete shelter, you need the following formwork for the shelter:
- Vertical (wall) formwork to cast walls;
- Horizontal slab formwork.
Formwork panels, formwork posts of different heights, tripods, crowns, beams, crossbars, etc., necessary to create a monolithic concrete structure, can be ordered from the Ukrainian manufacturer on the website virastar.ua.
When creating thick walls, braces are used to support the vertical formwork panels and help them withstand the pressure of the concrete mass.
Vertical formwork panels are made of laminated plywood with a thickness of 18-21 mm. Heavy formwork panels are mounted into a continuous system using a crane. The manufacturer takes into account the maximum concrete pressure on the panels of 90 kN/m2. In this case, the speed at which the concrete mixture rises to the height of the shield can be anything. The calculated bending of the shield under a load of 80 kN/m2 is 1.5 mm. For the construction of thick-walled reinforced concrete structures, reinforced formwork panels of the strongest series are used.
How to make a concrete bomb shelter?
Reinforcement and concrete are used to make shelters. It is recommended to use concrete class C25/30.
- A frame is erected from reinforcement along the entire width and length;
- formwork panels of the required size are installed;
- concrete mixture is poured;
- sealing devices are used to prevent the appearance of cavities;
- the reinforced concrete structure dries and hardens;
- the formwork is dismantled.
A properly constructed monolithic reinforced concrete shelter:
- will withstand pressure from blast waves up to 20,000 Pa;
- has a service life of at least 50 years (if it is not destroyed by a shell);
- does not burn.
Experienced builders are able to erect concrete shelters at any time of the year: spring, summer, autumn and winter.
If you are planning to build a bomb shelter, you can buy formwork directly from the manufacturer and it will be delivered to you as soon as possible at competitive rates!
Call us or write a message so we can answer your questions about formwork!