Метка: engineering
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What is the difference between cement D0 and D20
In options D0 and D20, cement grades M500 and M400, also known as “five hundred” and “four hundred”, respectively, are mainly produced. It is intended for masonry and plastering work, and is used in pouring foundations, manufacturing structures, beams and floor slabs from concrete, in residential and industrial construction. Marking «M500» means that this cement…
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What is better to choose — quartz or mechanical watches
There are two types of wrist chronometers — quartz and mechanical. And they differ not only in price. They are similar only in the scope of use and, perhaps, the presence of arrows. Quartz and mechanical watches differ in the principle of operation, the need for maintenance and accuracy. How mechanical watches work Mechanical…
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Compare strip foundation and monolithic slab
The tape and monolithic foundations are constantly competing with each other, because among builders and non-professionals there are supporters of both one and the other type of foundation. Both are certainly good, but which one is better? To answer this question, our analysts looked into the design features of both options. Features and benefits of…
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Compare polystyrene and mineral wool
Builders often argue about which insulation is better to choose for certain conditions. Some say — polystyrene, others insist on the good old mineral wool. In general, both options are great for home insulation, since they have almost identical thermal conductivity coefficients. But other than that, they are radically different. Our experts understood the question:…
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Compare two-pin and one-pin lamp
Lamps that are used in the lighting system of a car (headlights, interior lighting, parking lights, brake lights, and so on) can be single-pin and two-pin. And they differ not only, as the name implies, in the number of contacts, but also in functionality. And, of course, they are not interchangeable. Let’s figure out how…
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Compare drywall and plaster | What is best for walls
Often, if it is necessary to finish the premises in new buildings or during repairs, the question arises: which option to choose for leveling the walls — sheathing with plasterboard sheets or plaster? No one can give a direct answer to this question, because each of these types of finishes has certain advantages, but also…
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Compare dry or wet floor screed
Screeds are made for the device of a flat base for flooring. In addition, the screed can, if necessary, serve to create floor slopes in order to drain water; engineering communications can be laid in it. Screeds are divided into two types: dry and wet. With the help of our experts — professional builders —…
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Compare parquet and engineered board
Our experts — professionals in the field of construction and repair have analyzed the properties and features of two similar flooring materials — parquet and engineered boards, made a comparative analysis of their advantages and disadvantages, which will help you make the right choice. parquet board A high-tech product that is made by gluing…
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Comparing teflon and ceramic coating
The choice of dishes, kitchen appliances and other utensils that help to manage the household is a responsible undertaking. Firstly, all these items will come into contact with food, so they must be made from high-quality, safe materials. Secondly, the taste and appearance of cooked dishes often depend on what utensils and household appliances were…
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What is the difference between a switching power supply and a conventional one: features and differences
The vast majority of modern electronics operates on direct current with low values of power and voltage. For example, routers consume 12 volts and 5 amps, and smartphones in most cases — 5 volts and 2 amps. It’s just that a completely different current is distributed in the household network — alternating, with a frequency…