S1 class pressure-resistant bomb shelter "BSF L/XL"
The shelter created by Bomb Shelter Finland includes a certified ventilation system made in Finland, specially developed for bomb shelters, and a pressure-resistant door and hatch, which make our shelter a truly secure bomb shelter. The bomb shelter is built of thermal blocks with a 302 mm thick concrete core and is available in different ready-made packages so that you can choose the shelter that suits your needs and budget. It is an excellent solution with a small construction area and a very fast construction process for building in the courtyard of existing buildings, under new houses or in a completely remote location. The shelter can be built both underground and semi-underground in the style of a basement.
- U-value of wall material – 0.24 W/m²K
- EPS insulation material thickness – 134 mm
- Reinforced concrete wall thickness – 302 mm
- Ceiling reinforced concrete thickness – 457 mm
- Floor reinforced concrete thickness – 250 mm
- Ventilation – Ventilation system with certified pressure-resistant valve system, pressure resistance up to 300 kPa (3 bar)
- Door / Hatch – Certified pressure-resistant up to 200 kPa (2 bar)
- The ceiling is cast on a Ruukki metal profile, which protects against possible concrete pieces and dust falling from the ceiling in the event of an impact.
Bomb Bunker BSF M
Compact size bomb shelter with a floor area of 11.9 m²-
Shelter for max. 15 people.
-
Recommended maximum attached building size 595 m²
-
Outer dimensions 5.4 x 4.35 x 3.2 m
-
Entrance area 1.1 x 3.5 x 2.5 m
-
Shelter room 3.5 x 3.5 x 2.5 m
-
Well suited for single-family homes and multi-apartment buildings. The best solution for protecting your family.
Bomb Bunker BSF L
A more spacious bomb shelter, with a floor area of 20.5 m²-
Shelter for max. 27 people.
-
Recommended maximum size of attached building 1025 m² (2050 m² in industrial building)
-
Outer dimensions 7.9 x 4.35 x 3.2 m
-
Entrance area 1.1 x 3.5 x 2.5 m
-
Shelter room 5.9 x 3.5 x 2.5 m
-
Meets the requirements of public shelter S1 and is suitable for smaller apartment buildings and public institutions.
Bomb Bunker BSF XL
Our most spacious bomb shelter, with a floor area of 28.9 m²-
Shelter for max. 38 people.
-
Recommended maximum size of attached building 1445 m² (2890 m² in industrial building)
-
Outer dimensions 10.3 x 4.35 x 3.2 m
-
Entrance area 1.1 x 3.5 x 2.5 m
-
Shelter room 8.3 x 3.5 x 2.5 m
-
Meets the requirements of public shelter S1 and is suitable for larger apartment buildings, public institutions and workplaces.
The shelters comply with Finnish S1 class. By special order, BSF shelters are also available with doors and accessories that meet S2 class requirements!
The explosion resistance of the material used in our shelters was determined in an experiment conducted in 2003 at the Quantico Marine Corps Base in the USA, where the resistance of our manufacturer’s thermal blocks was tested using controlled explosions on the ground with a 22.7kg TNT explosive charge, using a thermal block with a 150mm concrete core at six different explosion distances. The explosion closest to the walls was carried out 6 feet or 1.8 meters from the thermal block walls. As a result of the explosion, cracks with a maximum width of 2mm appeared in the concrete and no damage was observed on the inside of the walls. Considering that the bomb shelter is located underground and the walls we offer are made of 302mm concrete wall, which is twice as thick as the one used in the test, the results are also valid for our underground bomb shelters and the real protection is stronger than the test results given. The document can be viewed HERE.