Simple conversion method between glass weight box and square

October 19, 2021

[China Glass Network] First, the weight box concept

The measurement method of ordinary flat glass is generally calculated by “weight box”, which is a unit of measurement for calculating the material and cost of flat glass. A weight box equals 2 mm thick flat glass with a weight of 10 square meters and a weight of 50 kg. By the front step, the volume of the square glass with a volume of 2 mm is 10 square meters: 0.002m*10m2=0.02 cubic meters. The second step: the specific gravity of the specific gravity glass is 2500 kg/m3, which is a constant third step. : The weight of 10 square meters of flat glass with a weight of 2mm is: 0.02 cubic meters * 2500 kilograms / cubic meter = 50kg. Step 4: Comprehensive (0.002m * 10m2) * 2500kg / cubic meter = 50kg

Second, the conversion of the number of glass heavy boxes and the number of squares

By the front step, the volume is still the formula above, weight = volume * specific gravity, push back, volume = weight / specific gravity. The volume of 1500 heavy box is 1500*50kg/2500=30 cubic second step, the area is 30 cubic meters / 0.004 = 7500m2

Third, the calculation method of the square of different thickness of a heavy box

Take 2mm glass as an example: (0.002m*10m2)*2500kg=50kg Push back the square: (50kg/2500kg) / 0.002=10m2, 1.5mm glass: (50kg/2500kg) / 0.0015= 13.3333m23 mm glass: (50kg/2500kg) / 0.003 = 6.66666m24 mm glass: (50kg/2500kg) / 0.004 = 5m2

Easier way: You can see that 50kg/2500kg is a constant, which is 0.02. After that, you only need to divide the thickness by 0.02 to get the square of the thickness of the glass one heavy box. We have expanded the divisor and dividend by a thousand times, and the result is the same with 0.02/0.002=20/2. Later, it is easy to understand and more practical: the square of a 2 mm glass heavy box is 20 divided by 2 = 10 square.

Similarly, the square of the 3 mm glass heavy box is 20 divided by 3 = 6.66 square 4 mm. The square of the heavy box is 20 divided by 4 = 5 square 5 mm. The square of the heavy box is 20 divided by The square of the glass one heavy box of 5=4 square 10 mm is 20 divided by 10=2 square.

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