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ARCA IS PROTECTION
A multi-section protective shelter will allow students, staff, and passersby to always remain nearby and safe.
Durable material: Made of high-quality reinforced concrete, the shelter ensures maximum reliability and durability.
Increased blast resistance: A special polymer coating significantly increases the blast resistance of the structure. ARCA can be used as all types of civil defense protective structures (shelter, radiation shelter [PRU], simplest shelter, dual-purpose facility [PMU], and others). ARCA fortification structures are multi-section, multi-purpose shelters for civil and military use. They were designed by top-tier specialists and have undergone field and physical testing at the State Research Institute of Building Structures in Kyiv. It withstands an overpressure from an air shock wave of over 300 kPa. They feature enhanced reinforcement with rebar up to 18 mm in diameter, reinforcing meshes arranged with an offset so that the intersection of one mesh is opposite the openings of another mesh; an appropriately strong internal concrete mix; and metal fiber reinforcement.
Protection class: A-II, A-III, A-IV. Withstands an overpressure from an air shock wave of over 300 kPa. Reduction of radiation exposure up to Kf = 5000 is possible.
Specifications
- Usable area: 16.25 m²
- Capacity: 27 people
- Weight: 117 t
- Protection class: A-II, A-III, A-IV
- Rebar content: 40%
- Wall and ceiling thickness: 350 mm
- Number of sections: 6
Dimensions
- Overall dimensions including vestibules: 3.20 x 11.00 x 3.20 m
- Internal dimensions (usable area without vestibules): 2.50 x 6.50 x 2.50 m
Materials
- Reinforced concrete: class C35/45.
- Embedded parts: S245 grade steel.
- Rebar: class A500C (designed for crack resistance).
Complies with DSTU B V.2.6-2:2009, DSTU 9195:2022, and DBN V. 2.2-5:2023 standards. Certified by the State Research Institute of Building Structures, Certification Body "CENTROSEPROBUD".
About ARCA Shelters
- Capacity: from 5 to 100+ people.
- Type: aboveground, underground, semi-buried, modular block.
- Wall and ceiling thickness: from 350 mm.
- Warranty: 50 years on the concrete structure.
ARCA is a fully equipped solution.
Base Configuration
- Installation and setup
- Reinforced, airtight doors (440 kPa)
- Benches for seating
- Fire extinguisher
- Collective first-aid kit for protective structures
- Electrical networks
- Fan heater
- Forced ventilation (without filtration)
- Documents and certificate of conformity
- Ramp
All other options—including filter-ventilation units, restrooms, etc.—are calculated upon request in accordance with the customer's Technical Specifications (TS).
The price does not include:
- site preparation works at the installation location
- delivery
Calculated additionally, depending on the specific requirements and distance.
No questions about this product, be the first and ask your question.
BUNKER-OK is a Ukrainian engineering brand providing modern shelters and civil defense solutions for the private sector, business, and civil and strategic infrastructure.
We design and manufacture protective structures, systematically improving them based on practical operational experience, analysis of shelling consequences, and the actual behavior of structures during combat strikes.
Drawing on the experience of over 400 installed shelters, the BUNKER-OK team has reached an unequivocal conclusion: not every structure that looks like a shelter is capable of providing the proper level of protection.
We have studied actual destruction and structural weaknesses of low-quality installations, and we responsibly state: effective protection is determined not by the volume of concrete, but by structural integrity and a well-engineered reinforcing cage that stops shrapnel, localizes impact damage, and saves lives.
That is why the BUNKER-OK team is the first in Ukraine to establish CPS (Civil Protection Standard) — a next-generation quality standard.
CPS was created based on physical loads, engineering expertise, and field testing against modern combat threats, including:
- 120 mm OF-843 mortar shell
- 125 mm OF A-IX-2 tank shell
- HE-Frag warhead of the Shahed-136 strike UAV (47.8 kg)
In today's reality, the legally established testing standard of 2 kg of explosives (TNT) is increasingly becoming just a basic regulatory threshold. It rarely corresponds to the scale of modern threats, cannot be considered a comprehensive indicator of protection, and is not a convincing basis for evaluating a shelter's reliability.
The CPS quality standard by BUNKER-OK significantly exceeds current state requirements and sets a new safety benchmark for the market.
We are convinced: the CPS quality standard must become the fundamental basis of choice for every buyer and a new benchmark of quality for every shelter manufacturer.
BUNKER-OK is not just a manufacturer.
We are a company shaping a new culture of protection in Ukraine and worldwide.
Act now! Your personal protection solution selection is waiting!
CHOOSE A PROTECTION SOLUTION ►
We are open to partnerships, collaborations, and co-creating a stronger, safer future.
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Together, we don't just talk about defense. Together, we shape a culture of responsibility, strength, and safety for generations to come.
Join us. Share. Build a future where protection is a conscious choice for everyone.
- Freight transport across Ukraine
- Special transport across Ukraine
- Direct deposit
- Payment online (Visa/MasterCard)
- 100% original product
- Warranty is up to 50 years
