Foundation is an important part of the building. That is why any construction
starts from soil preparation and footing. At this stage of construction there
are no essential differences with traditional methods.
The only difference is that the wall of polystyrol blocks is twice thinner and
three times lighter compared with brick wall of two bricks, that is why the
foundation poured may be essentially thinner than the usual one, i.e. less
labor intensive and therefore, cheaper.
In the process of footing erection it is necessary to leave on its surface
connecting rods to connect with vertical fittings of walls. It is very important
to make water isolation of foundation.
Wall construction process consists of three stages:
Wall construction starts from installation of the first run of concrete forms along the whole perimeter of house footing. Then distances, heights, corners, diagonal lines etc. must be accurately measured. Necessary distribution lines and reinforcement are laid before concrete casing. Reinforcement diameter and spacing are calculated by the designer. Along the perimeter of the whole building in the first run of blocks.
Prefabricated reinforcement cage is laid. Similar cage, only vertically, is laid in each corner of the building, door and window aperture, and in the last run of blocks under floor slab. Then concrete mixture is poured.
The second, third etc. runs of blocks are laid with bias (as in brick work) overlapping the vertical seams of the lower layer, thus rigidly fixing the walls under construction. Next day 4-8 runs of blocks may be installed (of 1-2m high) depending on the whether conditions and configuran of contructions and this procedure must be repeated again (Installation of concrete form blocks, Reinforcement, Filling of reinforced blocks with concrete).
Creation of door and window apertures is made by means of preparation of respective concrete form runs. End faces of polystyrene foam blocks forming a door or window aperture are cut, if required, or simply locked by special plugs preventing from concrete leakage. The upper layer over the aperture is reinforced and is supported from the bottom (for example, board, beam channel) to prevent from concrete leakage.
Inserted floors are made using any traditional method: cast-in-situ slabs, reinforced concrete slabs, on wooden beams. To ease assembly of lift slabs in the house construction a polystyrol block (corner) of interfloor overlapping is applied.
Herewith the overlapping rests upon reinforced concrete wall of 150 mm thick (it is quite enough according to construction norms).
To obtain round shape of the wall a common block is used. From the internal side of the block using construction knife it is necessary to make a vertical notch of 1.5 cm wide in front of each block cell, to bend the block and to fix the required form with construction scotch.
Before casing with concrete the pipes are easily laid inside the wall and are taken outside where it is necessary. It is also possible to assemble pipes in a regular manner.
The roof is constructed in a common way. For this purpose, it is necessary to reinforce anchor pin with thread in the last run before roof, so that it is possible to fix to them joists and planks, whereon roof timbers are mounted. The roof is recommended to be encased for warmth-keeping with foam sheet for more effective heat insulation.
This stage of construction is simple. For this purpose, it is necessary to chase with construction knife channels in the internal layer of insulant, to mount metal or PVC sleeves, and to lay wiring therein.
Due to its properties and rough surface polystyrene foam perfectly contacts with any adhesive cements of domestic and foreign manufacturers. It settles the problem of outside and interior finish with all types of finishing materials;
Face brick, facing plaster, paving tile, center-beaded board, siding etc. are used for facades.
Walls of buildings from permanent form are recommended to be finished with fasage tiles, which are stuck on the ideally plane surface (decreases labor intensiveness of work), though any known desired finishing materials may be used: facing plaster, ceramic tile, siding, decorative PVC panels etc.