Our dome facilities offer superior strength compared to all other building options, allowing the domes to significantly outperform traditional building alternatives.
Among the benefits of our domes:
- Engineered to meet both FEMA 361 / ICC-500 as well as NRC Regulatory Guide 1.76 as required to withstand 360 mph wind speeds.
- Virtually unaffected by time, weather, seismic activity or manmade assault, thus meeting standards for near-absolute survivability
- Customizable open span floor plans
- Lower construction costs than conventional construction
- Proven speed to market as construction process significantly shorter than that of conventional construction
- Proprietary construction process is not compromised by harsh weather conditions, allowing us to commit to more aggressive schedules
- Incorporate the latest green technologies and provide significant long-term cost savings vs. the cost of conventional construction
- 30-35% reduction in energy consumption and costs
- Incorporate recycled materials, low-emitting paints, grey water recycling, LED lighting and geo-thermal HVAC systems where applicable
EXTREME FLEXIBILITY IN INTERIOR SPACE PLANNING
The free-span structural design eliminates structural bearing walls, columns, and other load-bearing elements on the building interior. This free-span capability allows pratically unlimited flexibility in interior space planning at the time of the original building design or as remodeling needs reshape the building interior in the future.
INHERENTLY GREEN CONSTRUCTION PROCESS
- The concrete thin-shell structural system provides a continuous thermal mass that performs as heat sink to moderate temperature fluctuations in the building.
- The spray-applied building insulation and concrete ensure that there is minimal material waste.
- The durability of the the shell concrete structure provides a lasting sustainable building asset.
- Our concrete thin-shell facilities are significantly more energy efficient than traditional building options. Much of the superior energy efficiency is attributed to the insulated concrete thin-shell assembly of the building envelope. A thin-shell building has thermal mass from the concrete, continuous insulation and superior air- and waterproofing integrated in one continuous building envelope assembly.
- Energy Savings
- Structure Longevity
- Temperature Control
The major structural assembly of our concrete thin-shell consists of three main components. Several inches of reinforced concrete unbridged to the building exterior creates the innermost layer of the structural system. This concrete is isolated from the building exterior by several inches of continuous polyurethane insulation and a continuous waterproofing membrane. These outer two components ensure that the building is water and airtight to practically eliminate temperature fluctuations resulting from air infiltration. The continuous unbridged mass of the concrete acts as a thermal battery that mitigates severe temperature fluctuations within the building. This thermal battery can be used as part of a complete HVAC system including energy recovery components. It can also act as a heat sink to delay need for interior cooling during peak use periods within the building.
Temperature fluctuations in building types over several days
Sample core of an insulated concrete thin shell showing interior reinforced concrete & outer insulation
HVAC SYSTEM DESIGN OPTIONS
The increased energy efficiency of our domes allows for greater flexibility and efficiency in the design of HVAC systems for the buildings. The reduced demand on the systems allows for potentially smaller equipment capacity and savings on initial capital investment for HVAC equipment. Additionally, considering the building geometry and thermal mass properties of the concrete, non-traditional HVAC system designs can result in less need for distribution or return airducting.
FINITE ELEMENT ANALYSIS
The diagrams demonstrate Finite Element Analysis of a structure under a 250 mph wind.
Displacement under wind loading
Lateral Stresses under wind loading
EXCEEDS CURRENT BUILDING CODES BY 200%
Usable building life is extended by many decades because of the extreme strength of the concrete thin-shell. Building codes change on a typical cycle of 3 years and during each cycle, many design requirements become more restrictive. A building designed to minimum code standards today will likely not meet code requirements after only a few code change cycles. In contrast, our domes will easily meet structural code requirements far beyond this same time period allowing the usable building life to extend several times longer than a traditional structure.
EASILY WITHSTANDS STRUCTURAL OVERLOADING
The doubly curved building forms integrated in our concrete thin-shell provide superior strength against overloading from extreme winds, snow and earthquakes allowing these buildings to outperform other building systems. Our domes provide "near absolute protection" from high wind events.
BUILDINGS PERFORM 40% ABOVE ASHRAE 90.1 STANDARDS
Computer energy models and actual building data confirm performance considerably more efficient than current energy codes. The energy efficiency of our concrete thin-shell may contribute to 15 or more points under the USGBC LEED® green building certification program.