Stone production rate, weight, thickness, price calculation method

The formula for calculating the yield of marble slabs:

The yield per cubic cube is = 1000 / (product thickness + knife slit 5 mm)

For example, the output rate of 20MM large board is 1000/ (20+5)= 40 (M2/M3)

The formula for calculating the yield of granite slab: the yield of each square meter = 1000 / (product thickness + 8.5 mm slit), such as the output rate of 20MM slab = 1000 / (20 + 8.5) =35.08 (M2/M3), the sales price of non-20MM large board is based on 20MM board. When the large board is opened by sawing machine, 25MM large board price = 1.2 times 20MM big board price, 30MM big board price = 1.35 Double 20MM large plate price, 40MM large plate price = 1.75 times 20mm large plate price.

How to calculate the weight of stone

Stone weight = length * width * thickness * specific gravity, stone specific gravity, also called density

Usually the specific gravity of marble is 2.5 weight (ton)

Granite density or specific gravity is about 2.6 tons to 2.9 tons per cubic metre

How to calculate the thickness of the stone

1. Calculated in centimeters (cm): 1 cm (cm) = 10 mm (mm) = 0.01 m (m)

Common thickness of granite: 15mm, 19mm, 25mm, 30mm, 50mm

Common thickness of marble: 20mm, 30mm, 40mm

Common thickness of granite and imported granite: 12mm, 19mm

2. Calculated by points: 1 point = 1/8吋 = 3.2mm (commonly known as 3mm)

4 points = 4/8吋 = 12.8mm (commonly known as 12mm)

5 points = 5/8吋 = 16mm (commonly known as 15mm)

6 points = 6/8吋 = 19.2mm (commonly known as 19mm)

Stone price calculation method:

First, the specification of stone examples: According to the usual practice of stone curtain wall, the thickness is usually 18mm, 25mm, 30mm. Take the three cases as an example to illustrate the process of calculating the material price:

1. The stone block material should be cut and processed into a shape and thickness that can be used. According to 18mm, the sawing material is 8mm, and each cubic meter of material can be produced 1000÷(18+8)=38.46 square meters.

2, the price of the block is usually 6,000 yuan / cubic meter, the big cut to consider the cutting fee of 80 yuan / m2, then the cost price is 6000 ÷ 38.46 = 156 yuan / m2, plus cutting costs is 156 + 80 = 236 yuan / m2.

3, due to the different size of the stone plate, there is the problem of cutting utilization, generally take 90%, considering the impact of cutting loss, the cost price should be 236÷90%=262 yuan/m2.

4, stone manufacturers generally have to consider 15% to 30% of the profit, if calculated by 15%, the manufacturer's offer should be 262 ÷ 85% = 308 yuan.

5, stone freight 18mm stone 8 ~ 10 yuan / m2, 25mm stone 14 ~ 16 yuan / m2, 30mm stone 18 ~ 23 yuan / m2, are considered a loading and unloading, the choice of high and low costs mainly depends on the location of the project from the processing location. For example, the price of 25mm stone is: 1000÷(25+8)=30.30m2; 6000÷30.30=198 yuan/m2; 198+80=278 yuan/m2; 278÷90%=309 yuan/m2; 309÷85%= 363 yuan / m2, consider the freight after 363 + 14 = 377 yuan / m2. For example, the price of 30mm stone is: 1000÷(30+8)=26.31m2; 6000÷26.31=228元/m2;228+80=308元/m2;308÷90%=342元/m2;342÷

85% = 402 yuan / m2, considering shipping costs 402 + 18 = 420 yuan / m2.