Solutions for energy-efficient buildings, and in particular for buildings with the Passive House standard, they say nothing about the aesthetic canons according to which such a building is to be built. The guidelines for energy efficiency affect the shape of the building, but …
Author Archives: lore
Wood-based materials
The materials of the light wood wool boards contain cement as a binder. In combination with water contained in humid air, cement gives a strongly alkaline reaction. It makes it, that alkyd varnishes are saponified and become water-soluble.
Veneered interior doors have …
Aluminium
Aluminium
Why aluminum can be anodized and what is it about? Anodized aluminum is an electrically oxidized aluminum. An oxide layer is electrochemically deposited on the aluminum surface, increasing the resistance of this surface. At the same time, different colors can be obtained by anodizing.
Large aluminum windows …
Coating in the waste water tank
In the tank of the new sewage treatment plant, the built-in and already primed steel elements were intended for painting. About 10% the surface of steel elements shows corrosion. The coating must be resistant to the effects of wastewater with a pH value of 1. Please list the necessary painting activities …
Troweled plaster
A new floated plaster is to be made on the plaster of the Stair Mother. Please list one by one the works that make up its execution
The works related to the implementation of floated plaster are as follows:
1) sandblasting the existing plaster, repairing minor damage to plaster with gypsum-based putty;…
Condensation of water vapor in the wall
Please compare the thermal insulation from the outside with the thermal insulation from the inside in terms of the conditions of water vapor condensation in the wall
Temperature distribution in the cross-section of the wall at the same internal and external temperature values:
When the wall has no thermal insulation, temperature …
Painting tools
The following materials are currently used in the manufacture of brushes:
1) natural bristles (swine);
2) natural hair (horse, of the marten, badger, with an ox, coward, squirrel, the bears, goat);
3) fiber fibers;
4) artificial bristles (polyester, nylon, a pearl);
5) artificial bristles (polyester, polyamide).
Advantages …
Fire dampers with a multi-plane cut-off partition
A different solution from the one discussed above are the multi-plane dampers. They allow the use of knees, arches and offsets right behind the hatch. However, pay attention, that the multi-blade fire dampers currently available on the Polish market are made of steel sheet. In relation with …
Wooden cube outside
Wooden cubes in the outer area.
Wooden paving stones to be placed outside the building are distinguished as square and round. The square block consists of sections of rectangular beams or sleepers. The round cube is made of machine-peeled softwood logs.
WITH …
Painting of plastics
Hardened PVC is often used for the production of plastic windows and gutters. What coating materials can be applied to this material? What requirements should these coatings meet?
The following materials are suitable for rigid PVC components, giving coatings o …