The guard post - protective shelter Volat

A two-section protective shelter and security post allows personnel to remain on-site at all times and maintain constant control over order and the territory.

Features:

• Durable Material: Manufactured from high-grade reinforced concrete, the "Volat" shelter delivers maximum reliability and structural longevity.
• Enhanced Blast Resistance: A specialized polymer coating significantly increases the blast resistance of the structure.
• Safety Configuration: The shelter is equipped with reinforced airtight doors, seating benches, a fire extinguisher, a universal first-aid kit, power grids and forced ventilation.
• Convenience and Comfort: The package includes a desk, a Wi-Fi router, a recuperator, and glass embrasures made of Class 6+ multi-layer armored glass.

Warranty: Comes with a 50-year warranty on the reinforced concrete structure, cementing its exceptional quality and durability.

Key Specifications:

• Capacity: 5 people
• High-Quality Materials: Class C35/45 reinforced concrete, Grade A500C reinforcement, and Grade S245 steel embedded parts.
• Rapid Assembly: The shelter consists of individual blocks joined together by welded seams. Assembly time ranges from 6 to 10 hours.
• Mobility: Can be deployed above-ground, semi-buried, or fully underground.

The "Volat" protective shelter is engineered to meet the safety and comfort requirements of personnel monitoring security on-site. This structure allows personnel to remain at their workstations at all times, ensuring reliable protection and convenience.

Configuration

• Reinforced, airtight doors (440 kPa)
• Seating benches
• Fire extinguisher, universal first-aid kit
• Power grids
• Forced ventilation
• Documentation and Certificate of Conformity
• Wi-Fi router
• Recuperator
• Desk
• Glass embrasures (made of Class 6+ multi-layer armored glass)

Dimensions

• Overall dimensions: 2660 x 2000 x 2660 mm
• Wall thickness: 300 mm
• Internal dimensions: 2000 x 1400 mm
• Internal area: 2.8 sq. m
• Weight: approx. 18 t

About the Volat Shelter

Volat fortification structures are multi-section, multi-purpose shelters engineered for civil and military defense deployment. Designed by top-tier specialists, they have successfully undergone rigorous field and physical blast testing at the State Research Institute of Building Constructions in Kyiv. The structure withstands an air blast overpressure of nearly 850 kPa. The walls are engineered using a patented steel-fiber reinforced concrete formula.

The shelter elements are manufactured using a unique concrete mix composition that fully satisfies all requirements and standards of DSTU B (V.2.6-2:2009), DSTU-N B (A.3.1-34:2016), DSTU B (V.2.6-168:2011), DSTU 9195:2022 "Rapidly Erected Protective Structures of Civil Defense of Modular Type," and DBN V.2.2-5:2023 "Protective Structures of Civil Defense."

The units feature heavy reinforcing steel bars up to 18 mm in diameter, rebar mesh grids positioned with an offset so that the intersections of one mesh sit directly opposite the openings of the adjacent mesh, an internally fortified concrete mix core, and steel fiber reinforcement additives.

The Volat shelter is a rapidly erectable structure consisting of individual precast block elements joined by welded connections. These welds are designed with the capability to be disconnected (by de-welding or cutting) for repeatable subsequent joining and separating operations. It can be installed above-ground, semi-buried, or fully underground, with on-site assembly taking between 6 to 10 hours.

Embrasure Glass

Withstands direct hits from an SVD (Dragunov Sniper Rifle) firing a 7.62 mm pointed bullet with a steel core in a steel jacket.

Technical Information

Structurally, the Volat mobile reinforced concrete shelter is composed of a set of standardized modular items (sections). The total number of standardized sections in a module can vary. Along the length of the module, internal diaphragms with doorways are integrated, while solid, windowless diaphragms close off the module ends. The shelter structure can be executed in various configurations: 2- or 3-section layouts, windowless solid walls, walls with embrasures, treated with blast-resistance coatings, and more. The individual sections are welded together securely using embedded steel parts.

The Volat modular fortification system features a protection class rating of A-I/A-II/A-III. With a wall thickness of 300 mm, it absorbs an air blast overpressure of 849.94 kPa, satisfying Class A-I as well as Classes A-II, A-III, and A-IV without requiring additional reinforcing elements. When earth-bermed, it provides a radiation protection factor (Kz) ranging from 1,000 to 5,000, ensuring absolute defense against weapon fragmentation (shells, missiles, etc.) and other airborne debris swept up by blast waves, preventing structural failure or overturning.

The spatial rigidity of the structure is provided by the architectural formwork geometry of the standardized sections working in unison, reinforced by the internal stiffening diaphragms positioned along its length.

Materials: All load-bearing reinforced concrete elements of the frame are cast using Class C35/45 structural wall concrete. For the reinforcement of all concrete framework components, Grade A500C steel is used for both longitudinal and transverse reinforcement. Embedded parts are manufactured from Grade S245 steel. Rebar selection is calculated specifically with crack resistance parameters taken into account.

Alternative deployment scenarios for the Volat modular fortification builder include: military fortification assets, dual-purpose protective facilities, civil defense shelters, civil defense shelters for commercial enterprises, and the structural protection of critical infrastructure nodes.

The shelter complies with all mandatory DSTU requirements and standards. When built on a project-specific basis, it can be tailored to meet DBN code requirements. Our shelters connect seamlessly with one another, forming an adaptive protective space for anywhere from 1 to 30+ individuals. They are available in diverse versions ranging from 2 to 10+ sections, with either solid windowless walls or viewing window layouts.

Analysis Via Numerical Modeling

An engineering study was conducted to establish a structural calculation model for individual elements and the complete system of the Volat modular mobile reinforced concrete fortification shelter. Based on the results of numerical modeling under design hazard factors, the study determined core characteristics of the structural model (joint deformations under loading, total loads on the facility, and loads transferred to the foundation base). It also mapped design combinations of internal forces within key structural components and calculated the necessary reinforcement areas for the load-bearing reinforced concrete frames.

According to the technical report and the results of numerical modeling against design hazards, the cross-sections of the load-bearing components specified in the stage R working drawings (KZb mark) are fully sufficient to withstand all active design loads.

For convenience, all design loads factored into the calculation model are summarized in the tables provided below. Structural calculations were performed using the Structure CAD (SCAD) software package, for which the definitive computational model was built.

Snow and wind loads were omitted from the calculation due to their negligible values when evaluated in comparison to the extreme forces exerted by the air blast wave.

The structural layout factors in soil resistance under the foundation slab, assuming a subgrade reaction coefficient value of С1 = 100 t/m³.

The consequence class (reliability class) is designated as CC1, determined in compliance with DBN V.1.2-14:2018 "General Principles for Ensuring Reliability and Structural Safety of Buildings and Structures." Load distributions are assigned category "A" (for primary load-bearing structural members).

Design Weapon Characteristics:

Additional Information

• The price includes the cost of pre-assembling the shelter at the factory. In cases where unloading a fully assembled shelter is impossible due to site constraints, assembly will be completed directly at the delivery site and calculated separately.
• Delivery is calculated as a separate line item.
• Comes with a 50-year warranty on the reinforced concrete structure.
• All prices are stated inclusive of VAT.

Our defining mission is preserving human lives and securing critical infrastructure nodes. We emphasize the speed, simplicity, and ease of deployment and disassembly for mobile shelters. This delivers a dependable long-term or temporary protective solution for civilians against small arms fire, shrapnel, fragmentation, falling structural debris, and explosive blast waves during attacks on public locations. Features capability for a partial or completely autonomous internal life support system configuration.