GB 50500-2013 第4.3.1条
| **** | **The other items list shall include the following: provisional sum, provisional price, daywork, and general contractor service fee.** For hotel projects, the provisional sum is generally reserved at **10%–15%** of the divisional and sub-divisional works cost (for design changes and added functions); provisional prices include provisional material prices (e.g., imported sanitary ware) and provisional prices for specialist works (e.g., kitchen equipment installation). |