The issue of determining the allocation ratios for various design specialties

This post was last edited by lqh2009 on 2015-10-7 at 09:22. For better clarity, copy and paste one page: Attachment 7: Allocation ratios of various specialties for design projects. 1. Allocation ratios of design workload among specialties All design projects are divided into three stages: pre-design, preliminary design, and construction drawing design. The division of tasks among different specialties at each stage is carried out in accordance with the company’s regulations. The allocation ratios of design workload among specialties are specified as follows: 1.1 Chemical plant design projects The allocation ratios of design workload among specialties at various stages of chemical plant design are detailed in Tables 1 to 5. The design scope of chemical plants includes: process production units, analysis and testing laboratories within the plant (or workshop), control rooms, power distribution rooms, offices, mechanical, electrical, and instrumentation maintenance areas, as well as the process heating pipelines, external power lines, telecommunications facilities, roads, and overall site layout within the plant area. Excluded: raw materials, finished product warehouses, wastewater treatment, circulating water, main substation, overall plant transportation as well as mechanical, electrical, and instrumentation maintenance, plant-wide living and welfare facilities and analysis and testing services, and plant-wide utility facilities. The budgeting department prepares the construction drawing budget, calculating the output value by multiplying the actual charges by the project coefficient. Table 1 Proportions of various specialties in the preliminary design phase Specialty Process Engineering (including analysis, thermodynamics, materials, and exterior piping) Equipment (including industrial furnaces, mechanical maintenance, and mechanical operations) Automation and Electrical Engineering (including telecommunications) Percentage% 45 43* 1 2* 1 6 Specialty Civil Engineering (including architecture, structure, and site planning) Utility Systems (including water supply and HVAC) Technical Economics (including cost estimation and economic evaluation) Project Management Total Percentage% 7 7 15 12 6 100 Note: The values marked with * represent the proportion allocations for process engineering and equipment in the overall design of new factories; the proportions for other specialties remain unchanged. Table 2 Proportions of Various Specialties in the Early Design Stage
Specialty: Process Engineering (including analysis, thermal engineering, materials, and external piping)
Specialty: Equipment Engineering (including industrial furnaces, mechanical maintenance, and mechanical operations)
Specialty: Automation and Electrical Engineering (including telecommunications)
Proportion (%) : 50.5, 48.5*, 5, 8*, 8, 7*, 2

Specialty: Civil Engineering (including architecture, structure, and site planning)
Specialty: Utility Engineering (including water supply and heating/ventilation systems)
Specialty: Technical Economics (including cost estimation and technical economics)

Project Manager-led specialties
∑ Proportion (%) : 2, 2.5, 12, 12, 6, 100

Note: (1) For those marked with *, these are the proportions of the process engineering, equipment engineering, and automation specialties when there is an industrial furnace (of the process type) in the facility; the proportions of the other specialties remain unchanged. (2) The pre-design phase refers to tasks such as proposals, project proposals, and (pre-)feasibility study reports, which can be charged separately. Activities such as soliciting quotes for technology introduction projects, external technical exchanges, and contract negotiations are all included in the preliminary design phase.