first, get the corresponding local quota. For example, I am from Gansu, first set a granite staircase with a quota of 1-14, and input the engineering quantity of 261 square meters (note: 261 here does not refer to the direct granite area, but the projected area of the staircase obtained according to the calculation rules. If it is not 261, it must be calculated accurately and then input. After inputting 261, the actual granite slab is 376.22 square meters, including loss, etc. And the amount of inclined stairs calculated according to the projection of 261 square meters), and then take the quota of 1-74 non-slip stairs, steps and ramps, 11*4, and input the engineering quantity of 482 (the actual amount is 511.92, which takes into account the loss). The direct cost of the above two quotas is 123,811.12 yuan, and then the adjustment of labor and materials is carried out. The man-day is 217 man-days, which is transferred from the quota of 22.77 yuan (Gansu quota) to 46 yuan, with a total adjustment of 4,818.8 yuan. The material adjustment: granite is 376.22 square meters, and it is transferred from the quota price of 298.3 yuan to 621 yuan, accounting for 121,129.97 yuan, cement. The white cement is 36.4kg, and the adjustment difference is 2.91 yuan. The sand you wrote should be 42.21 yuan per square, the dosage is 8.683 cubic meters, the adjustment difference is -137.1 yuan, the copper bar adjustment difference is 4,184.43 yuan, and the total price difference is 124,958.41 yuan. Finally, the fee is charged. You only listed three items, which are actually more than that. You should include all the fees according to the local cost rules, and the fixed direct fee+manual adjustment+material adjustment+charging items = total price. There is also a basic question about the charging project. For example, if your overhead fee is 11%, which refers to the fixed direct fee or the labor fee, the tax rate is generally the last one, and the sum of all the previous items is the base. You should be familiar with the local cost rules. Finally, the basic values I use for adjustment are all in the 14 quota of Gansu decoration project, and the places are different.