TVD system

Transformable Variable Design

Fast and economical, the TVD modular building process is an advanced technology for an intelligent building. Conform to the latest DIN and ISO norms, the TVD process has been patented as a complete building process. The license of the TVD thermo-panel "the basic element of the building system " is registered at the State Institute of Patents of Croatia and Germany (EEC).


The concept is simple. Several building phases (boarding, concrete-work, thermal/sound insulation, internal installations, inside and outside final layers) are integrated in the basic element: the “sandwich” or “thermo” panel, a three-dimensional grating and insulation. Building operations are thereby reduced from 156 to 25.

TVD merges modern material and methods, with rationalisation of building in all its phases, from planning and design to site preparation and structural erection, thus reducing costs and delays while combining high stability and safety with good thermal, acoustic and anti-seismic properties. Building costs are successively monitored from the beginning to the end, which contributes to a cost reduction and a system optimization. Productivity is therefore optimal for a minimal price, with regard to the intrinsic quality of the building, either low cost or luxury, since the same basic structure is applied. Simple and performing, the TVD technique is fully adapted to environments where building must meet the need for fast and economical results adapted to the architectural and construction standards of a specific location, ensuring structures able to withstand the devastating effects of earthquakes (protection is 2° higher on the Richter scale than the competition) and hurricanes.

The TVD buildings have a high thermal insulation (Low Energy Houses); therefore very little energy is necessary for heating (and/or cooling), reducing production of carbon dioxide (CO2). Materials used are completely safe for health (no radiation). Implementation All kinds of constructions – with any design – can be made:

  • individual houses
  • apartment-buildings (up to 6-8 floors without additions)
  • schools, kindergartens
  • hospitals
  • hotels, tourist villages
  • industrial buildings, factories

TVD starts from the foundations and finishes with the roof.

Basic element: Sandwich (thermo) panel

Structural description

TVD System is very flexible from the structural point of view and enables building of the following structural types:

  • with load bearing sandwich panels in both directions
  • wall-frame structures with openings
  • frame structures which consist of strengthened TVD elements
  • infill systems for other structural systems

All systems have stiff slab structure in horizontal direction. Buildings made in TVD system can be built in a seismic and non-seismic regions up to 8 stories high according to the structural design. Structural analysis is anew performed for each building (or can optionally be typified). Vertical and horizontal connections among the panels are typified. They enable force transfer in both directions and prevent cold bridges (direct contact between outer and inner wall’s side). Using special equipment, typified joints and details around the openings „in-situ“ works are maximal reduced and chance for improvisation (or failure) is as small as possible. Electrical, water- and sewage, heating elements are dry-set „in situ“ before concrete spraying. After completing the panel with concrete, by applying spraying method, gained are load-bearing walls (sandwich panels) that already have very good thermal and acoustic characteristics.

Wall structure

Production and costs

Former classical construction methods have not been able to fulfill the rising demand for housing to satisfy many populations needs. Because of that, in the last two decades, new construction methods have been attempted, all over the world, to speed up the process and make building cheaper, while corresponding to new standards of living. One of them is the TVD System.

The TVD System comprises of design, preliminary work, construction, expense accounting and maintenance.

Expenses are successfully traced all the way, from the initial planning to final submitting of the building. Each phase is influenced by reduction of expenses and system optimization (handy erection of the panels, building floor by floor, integration of plumbing, electrical installations, pipes for water and sewage), thus reducing construction time for high quality buildings performing all construction physics criteria.

Productivity is increased by:

  • eliminating unproductive work (boarding and building slabs are useless)
  • reducing number of materials used to (3): steel meshes, insulating element, and cement
  • eliminating need for heavy machinery and cranes on site
  • reducing transport costs
  • reducing the need for a large number of qualified workers by industrializing production
  • gaining usable area of the building by reducing final wall dimensions
  • inducing a total reduction of construction expenses up to 30%
  • reduction of maintenance expenses
  • reduction of heating and cooling expenses
  • reduction of environmental pollution

Maintenance costs are up to 2.5 times less than for classical buildings. All these factors are influencing the attractiveness of the system, increasing the popularity of TVD latest global version. TVD is already present in Sudan, Libya, Algeria, India, and under negotiation in many other places, mainly for mass construction in high temperature environments.

Comparision and advantages

In comparison to other similar systems the advantages of using TVD System are unsurpassed energy efficient panel system, integration of all building phases included in the license > Design > Material and panel production > Construction > Supervision and extreme fire resistance

Design advantages are visible in design freedom, plasticity and good quality control.

Functional advantages are structural capabilities of using load-bearing panels, efficient building envelope for excellent protection from climatic conditions, excellent thermal and acoustical properties, excellent fire resistance, durability and little or no maintenance with trouble- free maintenance.

Construction site advantages:

  • Time saving Panels are manufactured in industry and transported to the site while foundation and site works proceed at the same time, allowing delivery and erection from truck to structure on precise and predetermined construction schedules. On larger projects this telescoping of critical path functions results in significantly reduced construction time. The time required for construction is reduced by continuous spraying of concrete. Delays in spraying of concrete due to time required for initial curing of concrete, form removal, and re-erection of forms is eliminated.
  • Minimized usage of skilled labour with minimal number of workers.
  • Economical erection by minimizing the on site work, erection without large cranes or other equipment for transporting the heavy loads, elimination of forms and enabling the erection in all kinds of weather.
  • Rapid structural enclosure which allows earlier access of finishing trades and minimizes the delays caused by bad weather, allowing the year round construction. Faster completion reduces interim financing costs and results in earlier cash flows.
  • Trade scheduling.
  • Achievement of high precision and productivity while all manual work is minimized.

Economic advantages is visible when all numbered advantages come to full in its economy side. Decreasing transport costs, site operations, no need for heavy construction equipment and minimal number of workers needed for all types of structures will assist in stabilizing the overall cost of the finished building. Financing costs will be additionally reduced by the shorter overall construction time.

Business data:

Project application
Mass production of building panels Unlimited possibilities for any erected building, system from idea to sale, implementation: individual houses, apartment-buildings, schools, kindergartens, hospitals, hotels, tourist villages, factories etc., specific feature: up to 6-8 floors without added static elements.

Project reach:
Suited for one country (state).

Business model
Licensed system: technology and know-how, licence validity: lifetime, buying options: modular, partnership: optional and negotiable.