Paint is mainly divided into wall paint and wood paint. Therefore, we need to calculate the formula to calculate the amount of paint for wall paint, the amount of homemade wood furniture primer, and the amount of homemade wood furniture. A new 120 square meter home 1. The total area of ​​the ceiling and wall is 260 square meters. How much latex paint is needed? 2. The two-door shoe cabinet with self-made louver shape is 0.9 meters, 0.3 meters and 1 meter in length, width and height respectively. How much paint is needed? 3. The self-made bookcase is 4.4 meters long and 2.4 meters high with a row of glass doors in the middle. How much paint does this bookcase need to brush? Ceiling and wall paint According to the brush calculation, 1 kg of latex paint can cover about 10 square meters of wall surface. In other words, 1/10 kg of latex paint is needed per square meter of wall. The total area of ​​the ceiling and wall is 260 square meters. According to the brush, it takes about 260*1/10=26 kg. Generally speaking, the ceiling and the wall need to be painted twice, then the amount of latex paint required by Mr. Xu to brush the ceiling and the wall is about 26*2=52 kg. Paint usage of homemade shoe cabinets Calculate the amount of paint used in homemade shoe cabinets. There are two ways to do this. Method 1: Calculate the number of panels used in the shoe cabinet According to the brush calculation, 1 kg of paint can cover about 15 square meters of the panel, which means that 1/15 kg of paint is needed per square meter of panel. So how many panels do you need to paint on this shoe cabinet? Let's assume that X panels are used. The area of ​​a panel is about 3 square meters. Then, according to the brush, the paint consumption of this shoe is about 1/15. *3*X kg. According to the calculation of “three bottoms and two sidesâ€, the amount of primer and topcoat is multiplied by 3 (pass) and 2 (pass) respectively, ie 1/15*3*X*3 kg and 1/15*3*X*2 kg. Method 2: Calculate the area of ​​the panel to be painted as needed In addition to the back and bottom, the top, the front and both sides need to be painted. The length, width and height of this shoe cabinet are 0.9 meters, 0.3 meters and 1 meter respectively. Then, the areas of the top surface, the front surface and the two side surfaces are 0.9*0.3 square meters, 0.9*1 square meters, 0.3*1*2 square meters, that is, 0.27 square meters, 0.9 square meters, and 0.6 square meters, respectively. Because the two doors of the shoe cabinet are louvered, the amount of paint used is relatively more. The paint amount of the two doors is multiplied by a factor of 1.2, that is, the two doors of the shoe are equal to the panel of 0.9*1.2 square meters. . According to the brush calculation, the paint amount of this shoe is 1/15* (0.27+0.9*1.2+0.6)=0.13 kg. According to the "three bottoms and two sides" calculation, the amount of primer and topcoat required for this shoe cabinet is 0.39 kg and 0.26 kg, respectively. Homemade bookcase paint usage The bookcase is 4.4 meters long and 2.4 meters high. It needs to be painted. In addition to the upper and lower rows of doors, there is also the inside of the cabinet that can be seen through the glass. We can calculate the area of ​​the upper and lower rows of doors first, 4.4*(2.4-1.2)=5.28 square meters, although the middle row is glass, but the corners of the glass and the inside of the cabinet that can be seen through the glass need to be brushed. Paint, and the amount is relatively large, the total is about 4 times the glass area, that is, 4.4*1.2*4=21.12 square meters. Therefore, according to the calculation of the brush, the paint amount of this homemade bookcase is about 1/15* (5.28+21.12)=1.76 kg. For the calculation of “three sides and two sidesâ€, the amount of primer and topcoat is 5.28 kg and 3.52 kg, respectively. Two questions about the amount of paint latex paint are summarized for your reference. Wall latex paint consumption = 1/10 * total wall area * 2 (brush twice) The amount of furniture primer is 1/15*, the area to be painted *3 (three times brush) The amount of furniture topcoat = 1 / 15 * area to be painted * 2 (two times brush)
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