A reinforced concrete girder grid will be constructed under the external load-bearing walls, to support the flooring of the ground floor and also bear the loads of the superstructure. The girder is connected to a foundation system formed by sinking well rings and concreting them underwater, which transfers the loads to the load-bearing soil layer. Foundation structures are usually made of C30/37 grade concrete. The ground floor is made of 20 cm thick reinforced concrete slabs, load-bearing in both directions, under which a 30 cm thick layer of sandy gravel bedding is placed. The subgrade (Trg = 90 %, k=15 MN/m2/m) and the bedding (Trg = 95 %, k=30 MN/m2/m) are compacted.


The vertical load-bearing system of the buildings is made up of steel and reinforced concrete columns of various cross-sections as well as 30 cm thick brick walls. The reinforced concrete structures are typically made of C25/30 grade concrete, steel structures are S235 grade. The walls are made in 30 cm width, out of prefabricated, grooved, fired clay masonry elements (POROTHERM 30 N+F) in accordance with the standard MSZ EN 771-1. Minimum requirements for masonry elements: compressive strength min. 10 N/mm2; thermal conductivity λ=min. 0.09 W/mK; Water vapour diffusion resistance coefficient μ=5/10; gross dry density ρ=min. 700 kg/m3; fire protection class/fire resistance limit for external load-bearing wall = D/RE 15, for internal load-bearing wall = D/REI 15; Rw (plastered wall): min 42 dB. The load-bearing walls are built in thermal insulation masonry mortar in accordance with the traditional MSZ EN 998-2 standard, with ½ element bonding per row.


Above the floors, 20 cm thick, bi-directional load-bearing, multi-girder, monolithic reinforced concrete slab structures are built, supported by walls, columns and beams. The cantilevered overhang exposed reinforced concrete slabs (Schöck Isokorb) are connected to the building via thermal bridge-break elements. Shear reinforcement capable of absorbing shear forces is installed at the places where the forces are concentrated (above wall corners, pillars), using modern shear pin structures (Peikko, Halfen or Schöck products). Above the openings in the brick walls, Porotherm ceramic-clad prestressed reinforced concrete lintels for spans over clear openings conforming to MSZ EN 845-2:2003+A1:2016 are installed up to 150 cm between the openings with a minimum fire resistance rating of R 120 (for plastered construction). Lintels larger than this, as well as the spans under large slabs, are built as monolithic reinforced concrete structures. A shading pergola system is built over the second floor terrace. Its main supporting structure is made of hot-rolled sections (HEA), on top of which typically a secondary structure of rectangular steel closed sections is placed to support the shading wood slats. The slabs are made of C25/30 grade concrete, the steel structure is made of S235 grade sections.


Between the floors, two-armed, straight-armed monolithic reinforced concrete plate stairs are built, supported on the edges of the slabs and the boundary walls.


The internal spaces of the buildings will be separated by partition walls made of 10 cm thick POROTHERM 10 N+F bricks with EI 90 grade fire resistance (for plastered structures).


Insulation against soil moisture:

Waterproofing substrates on the mineral surfaces of both horizontal and vertical waterproofing substrates shall be reinforced with solvent bituminous reinforcements, welded on 1 layer over the entire surface, minimum 4 mm thick, meeting the water tightness requirements of 10 kPa 24 h and the water tightness requirements after artificial ageing, a glass-fibre base layer, sand-blasted, fire protection class E, with a minimum tensile strength of 800/800 N/50 mm and a minimum breaking elongation of 2/2%, SBS modified bituminous thick board insulation under the main walls and in the floor placed on the ground soil. The insulation is installed on the outside of the façade walls with a lead-in height of 30 cm above the final pavement level.

Insulation against precipitation water:

The waterproofing of the buildings is provided by 2 layers of thick SBS modified bituminous thick board insulation, welded on the whole surface, minimum 2x 4.0 mm thick, meeting the water tightness requirement of 10 kPa 24 h and water tightness requirements after artificial ageing, with a glass fibre substrate, sandblasted surface, fire protection class E, minimum tensile strength 800/800 N/50 mm, minimum breaking elongation of 2/2%, SBS modified, with a reverse layered construction. The insulating boards are joined by hot-air welding with a width of 30 mm and with an overlap of 80 mm. The slope is provided by the subconcrete prepared under the insulation at a slope of 2%. Rainwater runoff to the roof surface is drained via spot drains through the slab. The base section of the insulation is designed with an inverted layering system. The insulation layers will be applied to the adjoining walls at a height of 20 cm above the final cladding level.

Insulation against industrial and service water:

Waterproofing of wet rooms is performed with a cement-based, fast drying, flexible, waterproofing material (MAPEI MAPELASTIC) in a minimum thickness of 2 layers, with identical expansion and bonding strips at the bends and wall corners, with glass fibre mesh reinforcement between the two layers, and with a permanently flexible waterproof jointing along the bends and edges. Ceramic tile tiling with a permanently flexible waterproof grouting bonded into a waterproof adhesive is used in toilet and hand-washing rooms, or rooms that are located above a room with a different use but a very low intensity of use.


Floor on ground soil:

For the ground floor structure, 16 cm thick, step-resistant expanded polystyrene rigid foam is used in accordance with MSZ 7573, complying with the technical specification MSZ EN 13163, with the following minimum requirements: compressive stress: ≥100 kPa; thermal conductivity: λ=min 0.040 W/mK; fire protection class=E. To protect the thermal insulation, 1 layer of 0.15 mm thick polyethylene foil is laid loosely on top of the insulation, with an overlapping of 10 cm.

Thermal bridges:

On the outer side of the monolithic reinforced concrete beams, corbels, pillars and ledges (where permitted by the structural design), a form-filled expanded polystyrene hard foam board thermal insulation board in accordance with MSZ EN 13163 and MSZ EN 13172 and SCHÖCK Isokorb thermal bridge-free load-bearing elements are placed in the formwork. Specific requirements: fire protection class: insulation core: E, insulation system: D; compressive stress: ≥200 kPa; thermal conductivity: λ=min 0.040 W/mK; dimensional stability in normal climate: ±0.2%; long-term water absorption ≤2%; water vapour diffusion water absorption: ≤5%

Thermal insulation of façades:

The buildings will have a façade thermal insulation system with a 1.5 mm fine-grained plaster, with a 15 cm thick layer of rock wool insulation in front of the ceramic masonry and 20 cm thick layer of rock wool insulation in front of the monolithic reinforced concrete walls and pillars. The thermal insulation part of the plastered façade system will be made of two layers of inhomogeneous façade insulation board. (ROCKWOOL FRONTROCK SUPER) In the plinth layers, a closed-cell, water-repellent extruded polystyrene foam insulation is applied in the full cross-section of the plinth, at least 30 cm above the connected cladding levels, with the same cross-sectional dimensions as the façade insulation above. Due to the low height of the attic walls, the plinth insulation is also applied on the inner side of the attic wall facing the flat roof.

Acoustic insulations:

All floors in the buildings are constructed as a floating structure with 3 cm thick Isover TDPT step-resistant glass wool sheets. At the edges of the floating layers placed in the floors, a perimeter dilation of polyethylene or polystyrene foam of at least 1 cm thickness is made along the wall, which is applied up to the top of the estrich concrete layer. In all rooms, walls (both masonry and precast) start from the upper plane of the waterproofing/reinforced concrete slab structure and continue to the lower plane of the slab of the next floor.



The façade doors and windows are of aluminium construction with three layers of insulating glazing in accordance with EN 14351-1. Technical parameters for windows and balcony doors: wind resistance min. 2C; watertightness: 4A; force required for operation: Class 1 100 N; mechanical strength: Class 2; impact resistance: Class 1; resistance to repeated opening and closing: Class 2 10000 cycles; heat transmission Uw= min. 1.2 W/m2K; acoustic class: according to MSZ 15601-2. Requirements for entrance door: wind resistance min. 1C; watertightness: 2A; force required for operation: Class 2 50 N; mechanical strength: Class 2; impact resistance: Class 2; resistance to repeated opening and closing: Class 5 100,000 cycles; heat transmission Uw= min. 0.6 W/m2K; acoustic class: according to MSZ 15601-2. The installation gaps are sealed in a circumferential manner with an airtight and watertight EPDM membrane, the gaps are filled with polyurethane foam. The doors and windows have a powder-coated, painted finish in anthracite.


The visible sheet metal structures on the building (attic walls, cornices, external window sills) are made of titanium zinc sheet with a minimum thickness of 0.7 mm and are designed in accordance with MSZ EN 612 and MSZ EN 1462. The attic walls are designed with a 5% inwards slope, with sheet metal structures or profiles covering the frontal plane by at least 8 cm.


On terraces, balconies and flat roofs, fall-out protection is provided by 2×8 mm thick two-layer PVB film laminated glass hand rails secured at the bottom.


The walkable flat roofs are made of thermo-treated ash-wood decking with a ribbed top surface finish and 21×125 mm visible element dimensions. The decking is underlaid with a 40×70 mm thermo scots pine bolster system. The wooden decking is fixed to the bolster system by means of A2 quality stainless steel terrace screws (Terrassotec Trilobular).


The shuttering panels, which will be a distinctive feature on the façade, are made of microstructured, powder-coated aluminium closed sections (48×48) and 40×12 mm extruded aluminium hollow chamber profiles in a fixed design.


The walkways in front of the building will be made of 6 cm thick earth-moist concrete paving, laid in 4 cm bedding sand on a 20 cm thick compacted 8-16 mm crushed stone foundation layer. The pavement slope is 1-2 % starting from the building.


On masonry structures smoothed lime cement machine plaster will be applied with preventive cementitious grouting (6-8 kg/m2). Plaster mortar: compressive strength CS II; adhesive strength min. 0.1 N/mm2; dry body density of hardened mortar ρ=min. 1,400 kg/m3; fire protection class = A1. After plastering and rendering, two coats of dispersion paint are applied.


The buildings are heated and cooled by a split design DAIKIN Altherma 3 R air-to-water heat pump, with a built-in 230 litre domestic hot water tank for heating and cooling, with a 9kW auxiliary heating cartridge. The indoor units will be installed in the garage with additional mechanical fittings, the outdoor units will be installed outside next to the garages. The rooms will be equipped with underfloor heating, supplementary wall heating, cooling by ceiling cooling, and independent temperature control for the rooms in accordance with the current regulation. Drinking water is provided to the building’s taps through a backflushable water filter, which is also located in the garage; hot water is provided by the heat pump with built-in storage. A circulation network will be installed so that hot water is available immediately when the taps are opened. The building meets the strict energy requirements of the current regulations and can be operated in a cost-effective way with the above-mentioned mechanical system and the installation of solar panels.


High-voltage electrical network:

Electricity meters of the type accepted by the service provider will be installed in the front garden. Electric feed-in: 3 x 400 V ~ 50 Hz electrical demand, current output of ~ 3×20 A

The planned artificial lighting network will be designed with 1.5 mm diameter copper wires, luminaires with LED light sources in concealed and pendant versions, with motion sensor controls in the passageways, stairwells and outside.

Electrical switches and sockets:

The switches and sockets are flush-mounted in the wall, with a common frame. Standard sockets (IP20 protection) will be installed in the living area and bedrooms, and sealed sockets (min. IP44 protection) will be installed outside and in the toilets, bathrooms and kitchen.

Installation heights:

Switches: 1.1 m in general-purpose rooms, 1.5 m in damp/humid rooms, outdoors.

Plug sockets: 0.4 m in general-purpose rooms, 1.5 m in damp/humid rooms, outdoors.

Recommended fitting quality level: Gira E2, JUNG A550, Siemens Delta miro

Low-voltage networks

The necessary IT and security low-current communication networks in the buildings are routed at the level of protective ducting.

  1. class, large ceramic tiles (minimum 60 x 60 cm). Wooden flooring, suitable for underfloor heating.


Premium quality (Villeroy, Grohe, Hansgrohe) fixtures, bathtubs, sinks, taps and bathroom fittings will be installed.


High-end interior doors in large opening size, with locks or bathroom locks.


Lawned courtyards; the inner area of the park is separated by an green ivy wall fence at the boundaries; planting of 3 to 5 deciduous trees and with automatic irrigation system.