Earthwork estimate: 2 million yuan.
Basic project budget: 4 million yuan.
Estimated budget of the main structure project:12 million yuan.
Estimated budget for electrical, HVAC and water supply and drainage works: 3 million yuan.
Estimated budget of building and curtain wall project: 4 million yuan.
Estimated budget of interior decoration project: 5 million yuan.
The estimation of square meters can be carried out according to the following methods:
Earthwork: the cost per square meter is about 10 yuan and 30 yuan, with an average of about 20 yuan/square meter, so the estimated earthwork is about 20 yuan/square meter × 200,000 square meters = 4 million yuan.
Foundation works: the cost per square meter ranges from 50 yuan to 100 yuan, with an average of about 75 yuan/square meter, so the estimated budget of foundation works is about 75 yuan/square meter × 200,000 square meters =15 million yuan.
Main structure project: the cost per square meter varies from 500 yuan to 800 yuan, with an average of about 650 yuan/square meter. Therefore, the budgetary estimate of the main structure project is about 650 yuan/m2× 200,000 m2 =13 million yuan.
Electrical, HVAC and water supply and drainage works: the cost per square meter varies from 80 yuan to 150 yuan, with an average of 1 15 yuan/square meter, so the estimated cost of electrical, HVAC and water supply and drainage works is about 1 15 yuan/square meter× 200,000 square meters = 2.3 million.
Building and curtain wall engineering: the cost per square meter ranges from 600 yuan to 1 000 yuan, with an average of about 800 yuan/square meter, so the estimated budget of building and curtain wall engineering is about 800 yuan/square meter × 200,000 square meters =16,000,000 yuan.
Interior decoration project: the cost per square meter varies from 700 yuan to 1.500 yuan, with an average of 1.000 yuan/square meter, so the estimated budget of interior decoration project is about 1.000 yuan/square meter × 200,000 square meters = 20 million yuan.