# The calculation formula of decoration cost teaches

2022-07-22
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1. Floor tile consumption: (Note: generally, the loss rate of different room types is different, about 1-5%)

1. Floor tile consumption: (Note: generally, the loss rate of different room types is different, about 1-5%)

consumption per 100m =100/< (block length + mortar joint width) × (block width + mortar joint width) > × (1+ loss rate)

for example, the specification of retro floor tiles is 0.5 × 0.5m, the seam width is 0.002m, the loss rate is 1%, and the number of blocks required for 100 square meters is:

100 square meters dosage =100/< （0.5+0.002） × （0.5+0.002） × (1+0.01) about 401

floor tiles total price = number of floor tiles × Floor tile unit price

3. Ceiling amount:

ceiling plate amount = (length - shielding length) × (width shielding width)

for example, calculate the amount of PVC plastic ceiling based on the net size area. The unit price of PVC plastic plate is 50.81 yuan per square meter, the length and width of shielding are 0.24M, the length and width of ceiling are 3M and 4.5m, and the dosage is as follows:

dosage of ceiling plate = (3-0.24) × (4.5-0.24) approximately equal to 11.76 per square meter

3. Door volume:

door material volume = door frame length × The width of the outer door frame is

for example (as shown in the figure). If the outer door frame is 2.7m long and 1.5m wide, the material consumption is as follows:

material consumption of the door =2.7 × 1.5=4.05 square meters

4. Wallpaper consumption:

wallpaper consumption = (high shielding length) × (width - shielding width) × Wall number? Door area? Window area

for example (as shown in the figure), if the net size area of the wall is calculated, the shielding is 24cm, the wall height is 2.5m, the width is 5m, the door area is 2.8 square meters, and the window area is 3.6 square meters, the dosage is as follows:

wallpaper dosage =< （2.5－0.24） × （5－0.24）> × 4-2.8-3.6 is about 36.6 square meters

the above is the calculation of partial material consumption. The total material cost of the decoration project is obtained by multiplying the material consumption of each part one by one by their respective unit prices

5. Floor consumption: (solid wood)

longitudinal consumption = room length/floor tile length

horizontal consumption = room width/floor tile width

in case of inexhaustible division, carry method should be used, and cannot be rounded off, but less than half a block is counted as half a block in the longitudinal direction, and more than half a block is counted as a block

total floor price = total consumption × Unit price

floor loss = floor area - housing area

floor loss rate = floor loss/housing area

note: generally, the floor loss rate is not more than 5%

6, the amount of wall materials

after the color and variety of wall materials are determined, the size of materials can be reasonably calculated according to the size of the living room. Considering the possible loss during construction, you can buy about 5% more than the actual amount. There are two methods to calculate the wall material:

1 According to the formula, multiply the area of the room by 2.5, and the product is the number of materials used for sticking the wall. For example, the material for a 20 square meter room is 20 × 2.5=50m。 There is also a more accurate formula:

s= (l/m + 1) (H + H) + c/m

where: S - the length of the required wall material (m)

L - the total length of the four walls behind the windows, doors, etc. (m)

m - the width of the wall material (m), plus 1 as the margin of the splicing pattern

h - height of the wall material required (m)

h - distance between two identical patterns on the wall material (m)

c - area of the wall required above and below windows, doors, etc. (square meters)

2 For field measurement, this method is more accurate. First, understand the width of the wall material to be selected, and measure the perimeter of the room wall (excluding doors, windows, etc.) according to this width. In the perimeter, there are several widths of the wall material, that is, how many pieces need to be pasted. Then measure the height of the wall to be pasted, and multiply it by the number of frames, that is, the length of the wall materials required for the walls outside the doors and windows (meters). Finally, use this method to measure the length of materials needed in the wall under the window, irregular corners and other places, and add it to the calculated length, that is, the total length. This method is more suitable for wall sticking materials with finely patterned patterns that do not need special alignment during splicing

7. Estimation method of coating dosage

introduce a simple calculation method:

divide the room area (square meter) by 4, and the height of the wall to be painted (decimeter) by 4. The sum of the two is the kilogram of coating required. For example, if the area of a room is 20 square meters and the wall height is 16 decimeters (except for the 12 decimeter dado), then (20 ÷ 4) + (16 ÷ 4) =9, that is, 9 kg of paint can paint the Wall twice

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