DRY CONSTRUCTION

Production and installation
of facilities made of
CONCRETE ELEMENTS

Construction of facilities
made of
LIGHTWEIGHT METAL
STRUCTURES
Radman Housing

• On every construction site, of any purpose and type, one of the most important requirements in regard to construction planning is fire protection – active and passive.
• The systems which we design and carry out appertain to passive fire protection. The main division is: fire protection sealing and fire protection claddings.
• The claddings are carried out by boards of various thickness in order to get linings, ceilings and shafts with different fire protection performances. Coating and painting
  of steel structures with fire protection coatings can also be counted as cladding.
• The sealing is performed on the walls in which different installations have been assembled and these walls being located on the fire sector borders. Around these installations, it is essential to seal penetrations in order to prevent passage of flame in case of fire. Such penetrations can be sealed in different ways and by using different materials and a very high level of fire-resistance can be achieved.
• We are registered in the Court register for designing and implementation of fire protection systems and we also have the license issued by the Ministry of Construction and Physical Planning.
• We have also been licensed by the producers of materials and regularly participate in various seminars and trainings. Some of the construction sites where sealing and claddings have been performed are: SKY OFFICE, VMD CENTAR (25 floors) and numerous smaller facilities.

Partners:
PROMAT | FERMACELL | HILTI

• Smoothing is done in cases of wall unevenness and damages from 3 to 30 millimeters, while in cases of bigger recesses and when covering installation conduits, the wall is covered with plaster and gypsum.
• Smoothing is necessary if the surface is not sufficiently flat and/or cracked and as such unappropriated for paint application, for some other decorative wall techniques or for tiling.
• Smoothing is also carried out on gypsum-cardboard ceilings and walls with different quality levels, e.g. Q1, Q2, Q3 and Q4.
• The painting works also include painting of walls and ceilings, decorative elements such as borders and alike.
• Various painting coatings are also used for protection against fire, moisture and spreading of bacteria.

Dry Screed

Dry screed is a flooring system made from special gypsum fibreboards made for that purpose. It is assembled by laying panels on a substrate made from fine granules which serve for levelling the substrate and as a heat and shock sound insulator. Panels are laid with mutual overlaying and interconnecting, thus forming a whole. Joints are filled with gypsum-based mass, thus making the surface of the screed uniformly smooth and straight. Identical systems have been developed for uses in wet areas, but with cement-based panels in order to avoid swelling of the gypsum.

Advantages of this type of screed in regards to the classic glazing are as follows:

• Dry screed is a flooring system made of gypsum fiberboards specially fabricated for that purpose. It is assembled by laying boards on the surface which is composed
  of small granules.
• The advantages of these floors are: quick assembling, no drying process, high level of compressive strength and bearing capacity, low
  weight.
• Dry screed floors are moist proof, waterproof and fire-resistant up to 120 minutes what can be used as floor structure fire protection.
• Increased system strength – no ruptures or expensive repair work on cracks with epoxy resins.
• More accurate fabrication – panels are level, there are no “peaks and troughs” on the surface of the glazing and therefore no need for sanding or levelling.
• Speed – dry screed can be laid much more quickly than classic glazing, and finishing linings may be glued the next day, while the glazing must be left to dry until an acceptable level of moisture is reached, thus allowing the laying of the finishing floor linings. Due to the glazing composition and weather conditions, glazing often cannot dry naturally and must be dried by specialised equipment, which is quite expensive to rent. Also, the expenditure of electrical energy is not negligible. During the colder days, glazing even needs to be heated in order to evaporate the moisture, which causes the heating costs to multiply.
• Smooth surface – unlike with classic glazing, the surface is smooth and does not need to be levelled by floor levelling compounds prior to the gluing of the thin floor linings.
• Lighter construction – less weight per unit of surface area enables it to be used in statically limited structures (e.g. structures with wooden interfloor structure etc.) and, due to its inclusion in the calculations of static load for new buildings, it enables simpler and less expensive dimensioning of the structural elements of the object.
• Simple fitting of the installations underneath the floor surface.

Raised floorings are modular floors assembled by placing panels on metal legs. Due to the great variability in the leg height, the necessary flooring and structure height can be achieved with modular panels which can be subsequently opened. They represent a sort of a revolution in the flooring construction. Such systems enable the routing of a large number of services underneath the floor, as well as subsequent modifications on said services. Due to these features, they are especially suitable for office spaces with many desks and electrical and networking installations, since all installations must be routed to each workplace underneath the floor surface. Due to this, they are commonly known as raised access computer floors. If such floor is combined with some sort of modular finish lining (e.g. carpet in panels), all subsequent modifications to the installations, which are made when offices are rearranged, require only minimal investments to route all the necessary services to the desired location. As an alternative variant, there are modular floors made from calcium-sulphate panels. They are glued to each other to form a strong, interconnected unit with a smooth and straight surface ready for laying any final lining, taking into account that floor panels are mounted on special metal legs, thus forming an elevated floor structure that also enables passage of different installations underneath the floor surface. They are exceptionally suitable for installation in kitchens, toilets and bathrooms.

Partners:
LINDNER | KINGSPAN | KNAUF | FARMACELL

• They are carried out with standard, waterproof and fireproof boards.
• They are installed beneath existing roof or floor structures with dropping height ranging from 3 cm up to an unlimited value.
• Ceilings are usually dropped to hide installations and to install lighting and create special light effects in spaces.
• Types and performances are numerous : gypsum boards ceilings, metal modular, mineral or wooden ceilings with various purposes – aesthetical aspect of interior design, for heating/cooling, as prevention against fire, radiation and noise.

Except for the partitions, gypsum boards are used in the construction of dropped ceilings, which are built, if required, from standard, watertight or fire resistant boards. Ceilings are usually dropped to hide installations and to install lighting and create special light effects in the room. Attractive design possibilities are virtually unlimited, the same as in the case of gypsum board walls. Except in the form itself, the possibilities of different solutions are evident in the vertical play, i.e. cascading ceilings and creation of different levels of dropped ceilings, accompanied by the installation of lighting elements. One of the important features of dropped ceilings is that they retain a layer of air in the interstice, which serves as thermal insulation between two floors or towards the exterior areas. The construction of dropped ceilings with perforated GK panels significantly reduces the echo in the room, and individual manufacturers have developed the manufacture technology to the point where they are able to manufacture perforated panels in accordance with the specifications given by the client, and deliver them already painted in three coats, ready for installation.

Partners:
KNAUF | RIGIPS | FERMACELL | ARMSTRONG | OWA | VOGL | HUNTER DOUGLAS | ECOPHON

• One of the basic and most common elements used in dry construction
• Lighter than all other structures
• Using different structures, it is possible to achieve high level of thermal and acoustic insulation, fire protection as well as resistance to humidity, water, chemicals, various radiations etc.
• Modern systems offer the possibility of installation of space heating or cooling elements.
• Various wall shapes can be carried out – space or apartment is easily rearranged or transformed.
• Partition walls can be high up to 15 meters, fire-resistant up to 180 minutes with acoustic insulation up to 75 dB which are top characteristics required on every bigger construction site.

One of the basic and most common elements in dry construction are gypsum board wall linings, which have numerous advantages over any other system. Gypsum boards wall linings are far lighter than any other structure, which enables use in facilities with weak static conditions. The use of different systems depending on the client requirements and regulations, considerably better properties can be achieved when compared to other wall solutions and at a lower cost. Considering the multi-layer construction of the wall itself, it is possible to achieve completely different properties on the opposite sides of the wall, in line with the requirements and intended purpose of the spaces on both sides. By using different constructions, it is possible to achieve a high degree of heat and sound insulation, fire protection, moisture resistance, and, by using special panels and other layers in construction, if necessary, other properties, such as protection from harmful radiation, intrusion protection, protection from firearms and fragmentation of explosive devices, as well as various other special properties, can be achieved. Modern systems even offer the possibility to install heating or cooling elements, which enables the wall to function as radiators or air conditioning devices and they can even play music after the installation of special oscillation modules and connecting them to the home audio systems. Considering all of the above mentioned, we can see how wide the possibilities in building gypsum board walls truly are and we can boldly claim that there is a system for every requirement.
Furthermore great advantages of gypsum board walls when compared to classical wall constructions, are as follows:

• Quick construction – in comparison to classic walls, there are almost no technological halts in construction, they can be immediately built to full height, walls do not need to be mortised, rendered and plastered, construct horizontal and vertical ring beams etc.
• Increased precision – special laser devices are used for placing of the construction during the process, i.e. the assembly, which achieve almost perfect vertical and horizontal orientation of the walls.
• Smooth and straight surfaces – gypsum boards used for wall assembly are smooth and straight. After the trowel finishing of the wall, final works can be carried out the very next day, regardless of whether this includes painting, tiling, wallpapering or placing of any other wall lining.
• Quick placement – installation – routing installations through gypsum board walls is exceptionally quick and simple and there is no need for mortising since the installations are routed during the wall’s assembly through the interspaces between two linings. Subsequent routing of installations is greatly facilitated since the wall is only partially opened and its repair is much quicker and simpler.
• Possibility of creation of various details, shapes, decorative elements, curved walls in both horizontal and vertical direction.
• Works are carried out dry and with minimal waste, and can be performed in already finished spaces, with only minimal dust protection of the surrounding area.
• Healthier microclimate for human habitation – natural regulation of humidity in the air, without releasing any odours, unlike cement-based materials

Partners:
KNAUF | RIGIPS | FERMACELL | PROMAT | ISOVER