I. 30 mm fine asphalt concrete stall construction process
Construction preparation for ground-level acceptance and clean-up measurements of leaking/glucose oil spills and leachate mixture transport temperature test (≥150°c) → mass stand-off (velocity: 1-3m/min) → initial pressure (steel wheel static pressure, temperature 135-150°c) → final pressure (steel wheel vibration + voltage) ≤ 80°c) → open traffic (temperature 50°c) ≤ final pressure (steel wheel receipt, temperature 80°c)。
Ii. Analysis of the cost and price of the specialized subcontracting of the package (in dollar/m2)
Labour costs (small jobs only)
Work and efficiency: auxiliary small workers are responsible for border processing, temperature monitoring, cleaning, etc., paid at a wage of 260 yuan per day, and an auxiliary stand of 700 m2 per class。
Cost: 260 ÷ 700m2 = 0. 37/m2。
2. Materials
Fine-particle asphalt concrete (ac-13):
Consumption: 30 mm x 1. 02 (pressure factor) = 0. 0306 m3/m2
(a) purchase unit price: south china market included a tax price of $1375/m3 in 2025
Cost: 0. 0306 m3 x $1375/m3 = 42. 08/m2。
Transboundary/colate oil (pc-3 emulsified asphalt):
Consumption: 0. 5 l/m2
Procurement unit price: 3. 5 usd/l
Cost: 0. 5l x 3. 5 = 1. 75/m2。
Total cost of materials: 42. 08 + 1. 75 = 43. 83 usd/m2。
3. Machinery
Combination machine (≥6m wide):
Rental costs: $5550/class (covering 900 m2)
Cost: $5550 ÷ 900m2 = $6. 17/m2。
Two steel wheeled circuitrs (≥11t):
Rental costs: $1,700 per shift (covered 1,200 m2)
Cost: 1700 ÷ 1200 m2 = 1. 42 / m2。
(b) volkage wheelers (≥25t):
Rental costs: $1,600 per shift (covered 1200 m2)
Cost: $1600 = 1200 m2 = 1. 33 / m2。
Total mechanical costs: 6. 17 + 1. 42 + 1. 33 = $8. 92/m2。
4. Direct engineering costs
Artificial 0. 37 + material 43. 83 + mechanical 8. 92 = 53. 12 usd/m2。
5. Management fees
At 5 per cent of direct engineering costs: 53. 12 x 5 per cent = 2. 66 yuan/m2。
6. Profitability
Target profit margin of 10 per cent (based on direct engineering): 53. 12 x 10 per cent = $5. 31/m2。
7. Taxes and charges (value added tax)
Discounts: (53. 12 + 2. 66 + 5. 31) x 9% = $5. 50/m2。
Imports:
Material entry: 43. 83 ÷ (1 + 13%) x 13% = 5. 04 yen/m2 (bluen concrete and lactation asphalt)
Artificial entry: 0. 37 ÷ (1+3%) x 3% = 0. 01/m2
Mechanical object: 8. 92 ÷ (1 + 3 %) x 3 = 0. 26/m2 (rent services tax)
Total progress: 5. 04 + 0. 01 + 0. 26 = $5. 31/m2。
Vat tax payable: 5. 50 - 5. 31 = $0. 19/m2。
8. Sub-contracted quotations, including taxes
Total cost: 53. 12 (direct) + 2. 66 (management) + 5. 31 (profit) + 0. 19 (value added tax) = 61. 28/m2。
