What quota for breaking concrete covers: Analysis of hot topics on the entire network in the past 10 days
Recently, one of the hot topics in the field of engineering construction is "What quota should be broken for concrete covers". This issue has sparked widespread discussion in major forums, social media and industry websites. This article will combine the hot content of the entire network for the past 10 days, structure the relevant data and give professional answers.
1. Statistics of popular topics across the network
| platform | Related topics | Popularity index | Main discussion points |
|---|---|---|---|
| Zhihu | 120+ | 85 | Applicability of quota, construction technology |
| Baidu Post Bar | 200+ | 92 | Regional differences, cost accounting |
| WeChat public account | 50+ | 78 | Policy interpretation, case analysis |
| Tik Tok | 80+ | 65 | Construction video and tool display |
2. Analysis on the quota of breaking concrete
According to the "Construction Project Bill of Quantity Pricing Specifications" (GB50500-2013) and local quota standards, the following factors must be considered when breaking the application of concrete:
| Key factors | Quota application rules | Common Mistakes |
|---|---|---|
| Concrete strength grade | Apply ordinary quotas below C30, and adjust the coefficients above C30 | Unified price without distinction |
| Break the way | Mechanical breaking/manual breaking corresponds to different sub-items respectively | Construction method does not match the quota |
| Rebar content | Steel cutting needs to be calculated separately for the content of reinforcement >1%. | Missing steel bar treatment costs |
| Waste transportation | The transportation distance is ≤1km included in the quota, and the excess distance must be calculated separately | Actual transportation distance is not considered |
3. Latest adjustment points for 2023
According to recent documents of the Ministry of Housing and Urban-Rural Development and local supplementary regulations, special attention should be paid to:
1.Upgraded environmental protection requirements: The dust prevention measures required for crushing operations are required, and some regions require the application of "Environmental Protection Special" sub-items (such as Beijing and Shanghai)
2.Mechanical shift adjustment: Starting from the second quarter of 2023, the unit price of hydraulic breaker hammer shifts will generally increase by 5-8%
3.Recycling Reward: For projects with concrete waste utilization rate ≥30%, a quota coefficient discount of 3-5% can be applied for.
4. Comparison of quotas in typical regions
| area | Quota number | Unit price (yuan/m³) | Special Instructions |
|---|---|---|---|
| Guangdong Province | AZ1-0025 | 218 | Loading is included and not transport is included |
| Jiangsu Province | J3-124 | 195 | No steel bar cutting |
| Sichuan Province | SC-A-036 | 206 | Including 50m in-site transportation |
| Beijing | BJ-2023 Break-07 | 245 | Including dust suppression measures |
5. Practical advice
1.Make an on-site visa: Record key data such as actual broken thickness and steel bar content
2.Compare construction plan: For concrete slabs with a thickness of less than 30cm, artificial crushing may be more economical
3.Pay attention to local supplementary quotas: Especially for special quotas for special structures such as subway tunnels and bridges
4.Use BIM to calculate quantity: Accurately calculate the volume through three-dimensional scanning to avoid controversy
With the digital transformation of the construction industry and the increase in environmental protection requirements, the quota management of concrete breakage will be more refined. It is recommended that engineering personnel regularly participate in the quota publicity meeting organized by the housing and construction department to keep abreast of the latest policy trends.
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