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A next-generation certified Anti-Radiation Shelter (ARS), ARCA SPACE is a reinforced concrete modular shelter providing the highest protection class in Ukraine.
The certified ARCA SPACE modular shelter by BUNKEROK, with an internal width of 4.0 meters and a height of 2.5 meters, represents the optimal balance between capacity, protection level, and comfort.
The certified ARCA SPACE Anti-Radiation Shelter (ARS) is a flagship next-generation modular protection system. It is engineered according to the modern CPS (Civil Protection Standard) and created for a new reality where safety is not a temporary fix, but a strategic responsibility for human lives.
The certified ARCA SPACE Anti-Radiation Shelter (ARS) is a multi-purpose reinforced concrete modular shelter that combines a superior level of protection, engineering reliability, and adaptability for the private sector, business, and public and critical infrastructure.
Specifications
- Number of sections: 4
- Number of vestibules: 2 (enclosed)
- Capacity: 27 people
- Weight: 135 t
- Shelter Protection Class: А-І
- Class of ARS and Dual-Purpose Facilities (DPF) with ARS protective properties: P-4, P-5, P-6 (above-ground without additional earth berming, included in the price)
- Class of ARS and DPF with ARS protective properties: P-1, P-2, P-3 (with additional earth berming or buried, calculated separately)
- Ceiling thickness: 700 mm
- Wall and floor thickness: 350 mm
Dimensions
- Overall dimensions (WxLxH): 4.70 x 8.60 x 3.55 m
- Internal dimensions (usable area without vestibules): 4.00 x 4.10 x 2.50 m
- Usable area: 16.4 m²
Materials
- Reinforced concrete: Class C35/45.
- Embedded parts: Grade S245 steel.
- Reinforcement: Grade A500C (designed for crack resistance)
- Double reinforcement area
Calculated separately after site inspection:
- Site preparation: earthworks, additional waterproofing, connection to engineering utilities, etc.
- Delivery and unloading
Complies with standards DSTU B V.2.6-2:2009, DSTU 9195:2022, and DBN V. 2.2-5:2023. Certified by the State Research Institute of Building Constructions, Certification Body "CENTROSEPROBUD".
ARCA SPACE is one of the most technologically advanced shelters in Ukraine
ARCA shelters:
- have been successfully battle-tested against the explosion of a Shahed-136 strike UAV warhead (47.8 kg), verified by official test protocols;
- feature a lab-tested 10-fold safety margin;
- comply with the highest protection class in Ukraine: A-I+;
- withstand blast overpressure exceeding 500 (1300) kPa;
- comply with Anti-Radiation Shelter (ARS) classes P-4, P-5, and P-6 in above-ground execution;
- comply with ARS classes P-1, P-2, and P-3 in above-ground execution with earth berming, or in buried and underground executions;
- are engineered for modern civil defense scenarios and critical threats.
Engineering Technologies of ARCA SPACE
TriCore Armor
A continuous three-tier reinforcing cage that:
- increases structural integrity;
- reduces the risk of progressive collapse;
- preserves geometric stability;
- helps maintain airtightness even under partial damage.
Dual Armor
An enhanced dual reinforcement area system for:
- superior distribution of explosive loads;
- reduction of local failure risks;
- containment of fragmentation damage;
- minimization of crack formation.
Blast Comfort
An anti-explosion valve that:
- dampens the blast wave;
- reduces overpressure;
- increases the safety and comfort of people inside the shelter.
BlastLock (Optional)
Reinforced protective doors with a reinforced concrete core to:
- provide additional protection against fragmentation;
- strengthen the resistance of the entrance group;
- maintain the shelter's protective perimeter.
Primary Purpose of ARCA SPACE 4.0
Public Safety: shelter solutions for schools, kindergartens, universities, hospitals, parks, playgrounds, transport infrastructure, and crowded public areas.
Business Continuity: solutions for offices, manufacturing plants, logistics centers, warehouses, the agricultural sector, pharmaceuticals, and commercial properties.
Infrastructure Protection: engineering defense for energy facilities, critical infrastructure, municipal systems, and strategic enterprises.
ARCA SPACE Deployment Formats
Above-Ground Format: a rapid modular solution that avoids large-scale earthworks. Provides ARS and DPF with ARS protective properties of class P-4 / P-5 / P-6, depending on the configuration.
Above-Ground + Gabion Protection: a reinforced outer perimeter for enhanced protection against fragmentation and blast wave impacts. Provides ARS and DPF with ARS protective properties of class P-4 / P-5 / P-6, depending on the configuration.
Semi-Buried Format: delivers an optimal balance between cost, installation speed, and heightened protection levels.
Fully Underground Format: the ultimate baseline level of defense: provides ARS and DPF with ARS protective properties of classes P-1, P-2, P-3; Fallout Shelter class and DPF with fallout shelter protective properties; protection against direct UAV strikes.
Underground + Damper Slab: the highest tier of engineering defense for ultra-high threat scenarios, including direct missile strikes in the corresponding design execution.
Anti-Radiation Protection
ARCA SPACE can be deployed as:
- an ARS (Anti-Radiation Shelter);
- a DPF (Dual-Purpose Facility) with ARS protective properties;
- a Fallout Shelter and a DPF with fallout shelter protective properties.
The structure seamlessly adapts to the required level of protective properties according to the client's specific objectives.
Base Configuration
- Installation and setup
- Reinforced airtight doors
- Seating benches
- Fire extinguishers
- Collective first-aid kit for protective structures
- Power grids
- Forced ventilation (without filtration)
- Anti-explosion valve
- Certificate of Conformity
- Ramp
Note: All other options—including filter-ventilation units, restrooms, etc.—are calculated upon request in accordance with the customer's Technical Specifications (TS).
ARCA SPACE is more than just a shelter
It is a multi-functional modular protection system built for:
- living;
- working;
- learning;
- operational continuity;
- long-term safety.
Up to a 50-year warranty on the concrete structure makes ARCA SPACE a foundational piece of modern infrastructure for generations to come.
ARCA SPACE 4.0
Modular protection created to preserve life.
BUNKEROK creates safety where people live, work, learn, and build the future.
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.
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- Freight transport across Ukraine
- Special transport across Ukraine
- Direct deposit
- Payment online (Visa/MasterCard)
- 100% original product
- Warranty is up to 50 years
