Construction of passive houses.
Important criteria for the construction of passive houses.
As we mentioned in the description of the features of a passive house, the construction of such a house should take into account certain criteria at every stage of the investment. Starting with the selection of a building plot, położenia i bryły takiego budynku a kończąc na …
Passive house features.
What distinguishes a passive house.
A passive house is a building that has a much lower demand for energy consumption compared to energy-saving buildings. The basic criterion for assessing whether a building meets the parameters of a passive house is energy consumption …
Single-family houses designed today, especially passive houses, they should resemble a thermos flask, both in terms of structure and properties. Means, that they must have a very durable structure, perfect tightness and thermal insulation. Otherwise, all building components must be designed and …
YTONG blocks can be built in winter conditions, at temperatures below + 5 ° C, after fulfilling the additional requirements specified in the further part of this chapter. The decision to undertake the works may be made by the construction manager or the supervision inspector, who is able to judge the possibility of correct them …
Old substrates
What damage to the old coating, constituting the foundation of the new one, must be checked before reworking it?
Before applying a new coating, the following should be checked for damage to the old coating:
1) Dirty;
2) discoloration, fungus, pubescence;
3) calcification;
4) insufficient grip;
5) scratches;
6) presence …
Zinc and galvanized steel
What types of galvanization are there?? What is the usual thickness of the zinc coating?
Most often, types of galvanization and standard thickness of the zinc coating layer are as follows:
| A type of galvanization | Coating thickness |
| Hot dip galvanizing | on single items 50-80 μm; already |
Cast iron and steel
What is the difference between steel and cast iron?
Steel contains less than 1,7% coal, while in cast iron it is 2-4% coal. The carbon content in the cast steel is 1,7-2,0%. Compressive strength and hardness increase with increasing carbon content, decreases …
Fiber-reinforced cement boards
It is planned to make the coating on the facade with fiber-reinforced cement panels. What technical conditions must be met in order to obtain a durable and defect-free coating?
Fiber-reinforced cement boards must be protected against underside moisture. …
What are the required substrate tests for aerated concrete prior to coating?? How defects and damage can be recognized?
The following substrate tests and damage identification are required:
| Subject of the study | Test method | Diagnosis |
| Moisture | visual | darker color |
| The presence of loose fit, brittle parts on |
To unambiguously determine the condition of the concrete surface, the degrees of surface damage are formulated from 1 do 5.
Degree 1. The concrete does not show any defects or damage, but should be protected against reduction in alkaline pH. The pores and cavities of the crayfish should be closed. Color of concrete …