>>>The basic elements that should be available after the completion of home decoration In recent years, there have been more and more disputes concerning the size of commercial housing, and in the final analysis, some unscrupulous developers have "caused the problem of cats and cats". Because, when we buy a house, it is generally the real estate company that provides the existing housing area data. So how do you do it? To this end, we have invited experts to introduce the method of self-testing commercial housing area. Decorative design tools: ordinary tape measure, calculator. Note: Measure refers to measuring and calculating two different steps. Measurement: The main measure is the actual size of the house. Step 1: Get a detailed standard floor or floor plan of your home. According to the detailed residential floor plan measurement and calculation can be convenient and accurate. The main data that should be included in the floor plan are: the dimensions of each room's axis (ie, the dimension between the center lines of the load-bearing walls or columns) and the total size of the external walls, ie the two dimensions, and the area of ​​use of each room. Most of the households are on the standard floor. Measurements and calculations are mainly based on standard floor plans and areas. If the floor of the residence is more special, such as the bottom floor, the drawing of the floor where the residence is located is used. In order to measure the area of ​​a house, it is not necessary to measure the area of ​​the entire building. Step 2: Measure and calculate your own internal use area and building area. Use area estimates. The size obtained by measuring the interior of the room is the size of the room axis minus the thickness of the wall and the thickness of the screed and cannot be used as the size in the area. In other words, the area calculated from this size is not the use area. The use area is calculated based on the internal dimensions of the room, which is the dimension of the axial dimension to remove the thickness of the structure. In general, when the load-bearing wall is a brick wall, the structure is 24 cm thick, the wall thickness in the cold area is 37 cm, the thickness of the concrete wall structure is 20 cm or 16 cm, and the non-bearing walls are 12 cm, 10 cm, and 8 cm. In general, the axis is located in the middle of the wall, and each side is half a wall thickness. White plaster thickness is generally 2-3cm. The measurement position should be 1-1. 2 meters above the ground. For rooms with an axis size of 360cm, the measurement result should be 360-20-2. 5 x 2 = 335cm. Based on this, the dimensions of the room's internal axis can be calculated to be 360cm and the calculated size is 340cm. If the dimensional error is within a few centimeters, it means that the thickness of the plaster is inaccurate and uneven. Generally, it does not affect the size of the axis and the internal dimensions of the room. There may be problems if the error is close to or exceeds 20 cm. Measure the interior dimensions of the room in both directions and multiply to get the room area. The area of ​​doors and windows is not included in the area of ​​use. Each room (including: foyer, aisle, hall, bedroom, kitchen, bathroom, storage room, wallpaper, balcony and other non-fixed structure surrounded by space) use area for the total area of ​​residential use. The measurement position should be 1-1. 2 meters above the ground. For rooms with an axis size of 360cm, the measurement result should be 360-20-2. 5 x 2 = 335cm. Based on this, the dimensions of the room's internal axis can be calculated to be 360cm and the calculated size is 340cm. If the dimensional error is within a few centimeters, it means that the thickness of the plaster is inaccurate and uneven. Generally, it does not affect the size of the axis and the internal dimensions of the room. There may be problems if the error is close to or exceeds 20 cm. Measure the interior dimensions of the room in both directions and multiply to get the room area. The area of ​​doors and windows is not included in the area of ​​use. Each room (including: foyer, aisle, hall, bedroom, kitchen, bathroom, storage room, wallpaper, balcony and other non-fixed structure surrounded by space) use area for the total area of ​​residential use. Home inspection Balcony Doors & windows Room Residential house Window Space Toilet design Toilet door size Bathroom size Bathroom door Tapered roller bearings refer to radial thrust rolling bearings with tapered rollers as rolling elements. There are two types: small cone angle and large cone angle. The small cone angle mainly bears the radial and axial combined load based on the radial load, and is often used in pairs, installed in reverse, the inner and outer seat rings can be installed separately, and the radial and axial clearance can be adjusted in installation and use; The large cone angle mainly bears the axial and radial combined load based on the axial load, and is generally not used alone to bear the pure axial load, and can be used to bear the pure radial load when it is used as a pair configuration (the end of the same name is relatively installed). The ability of a single row tapered roller bearing to withstand an axial load depends on the contact angle, i.e. the outer ring raceway angle, the greater the angle, the greater the axial load capacity. The most widely used tapered roller bearing is a single row tapered roller bearing. In the front wheel hub of the car, small double row tapered roller bearings are used. 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