How to set quota for pump
In engineering construction, the application of pump quotas is an important part of budget preparation and cost control. This article will combine the hot topics and hot content on the Internet in the past 10 days, analyze the pump quota application method in detail, and provide structured data for reference.
1. Basic concepts of pump quota application
Quota application refers to the process of selecting appropriate quota sub-items based on the actual conditions of the project, and adjusting the consumption of labor, materials, machinery, etc. to reflect the actual construction costs. When applying pump quotas, factors such as pump type, specifications, and installation methods must be considered.
| Pump type | Common specifications | Applicable fixed quota subheadings |
|---|---|---|
| centrifugal pump | Flow rate 5-100m³/h, head 10-50m | GB-001 |
| submersible pump | Flow rate 10-200m³/h, head 5-30m | GB-002 |
| plunger pump | Flow rate 1-20m³/h, head 50-200m | GB-003 |
2. Key steps in applying pump quotas
1.Determine pump type and size: According to the design drawings or actual needs, clarify the pump model, flow rate, head and other parameters.
2.Choose the appropriate quota subheading: Refer to local or industry rating manuals to find the subheading that matches the pump type and size.
3.Adjust labor and material consumption: According to the construction environment, installation difficulty and other factors, adjust the labor and material consumption in the quota.
| adjustment factors | Manual adjustment factor | Material adjustment factor |
|---|---|---|
| Ordinary installation environment | 1.0 | 1.0 |
| High altitude or narrow space | 1.2-1.5 | 1.1-1.3 |
| Special material pipes | 1.1-1.3 | 1.5-2.0 |
3. Answers to popular questions
1.How to determine whether the installation height of the pump affects the rating?
When the installation height of the pump exceeds a certain range (usually 3m), the consumption of labor and mechanical shifts needs to be increased. For specific coefficients, please refer to the local quota instructions.
2.How to set the quota for variable frequency pump?
When applying the quota of a variable frequency pump, additional installation and debugging costs of the frequency converter need to be considered, usually adding 10% to 15% of labor and material consumption based on the original quota.
| Pump type | Inverter power (kW) | Extra labor (man-days) |
|---|---|---|
| Small variable frequency pump | ≤5.5 | 0.5 |
| Medium variable frequency pump | 5.5-22 | 1.0 |
| Large variable frequency pump | ≥22 | 1.5-2.0 |
4. Precautions
1. The application of quotas must be combined with the actual situation of the project to avoid applying it mechanically.
2. Regularly update the quota manual to ensure that the latest version is used.
3. For special pump types or installation methods, please consult professional estimators or relevant departments.
Through the above steps and data analysis, the pump quota application can be completed more accurately, providing a reliable basis for project budget and cost control.
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