How to calculate nuclear increase and nuclear decrease in construction project audit?

It is common to increase or decrease the audit of construction projects. The specific increase or decrease is the difference between construction drawings, project budget quota, national price policy and national project settlement documents, that is, the project settlement book amount reported by the construction unit is greater than the construction drawings, budget quota, price policy and settlement documents. Commonly known as "nuclear subtraction", on the contrary, it is "nuclear increase", which generally appears in the following parts: \x0d\ 1. As-built drawings are calculated, the quantity of works is assumed to be 100 unit (or meters, tons, etc. ), and the construction unit reported 120 units. Obviously, the construction unit reported 20 more units. \x0d\ 2. The unit price of constructional column in the predetermined amount is one in 200 yuan, and the budget submitted by the construction unit is the unit price of frame column in 230 yuan. Obviously, the construction unit has overstated the project quantity by 30 units, so it is necessary to delete 30 projects, that is, to subtract them; \x0d\ 3。 The process of finding out the price difference between materials in the budget book. For example, for the sake of unified management, the state has made rigid regulations and fixed prices for large-scale comprehensive materials, such as 3,000 yuan per ton of steel bars, 2,000 yuan per ton of cement 300 yuan and 2,000 yuan per cubic meter of wood. Moreover, this price will be implemented regardless of the price during construction procurement, and some will not be implemented at a fixed price, but will be calculated at the invoice price. For example, the above three items are 3,500 yuan respectively. \x0d\ 4。 The settlement documents were not carefully implemented, resulting in a decrease. For example, the charging documents of the construction unit clearly stipulate that different tax rates shall be applied to projects implemented in different locations, with the site tax rate in the city being 3.48 1% of the direct fee, the site tax rate in the county being 3.35% of the direct fee and the site tax rate in the township being 3.20% of the direct fee. Some budget departments of construction units consider the construction site, that is, which one is higher, and the result is still reduced \x0d\ The above examples are all reduced, and vice versa.