The Theory and Practice of Project Network Planning

Author: Mao Yihua
Publisher:
Publish Date: 2003-09-01
Features:
1. Natural Conditions Data
Natural conditions data include:
(1) Topographic maps of the construction area and site, clearly indicating the location of the construction object, transportation conditions in the area, all above-ground structures on the site, distribution of rivers and lakes, contour lines, and coordinate grids.
(2) Engineering hydrogeological data, including the layout of geological boreholes, borehole logs, engineering geological profiles, physical and mechanical properties of soil, and conditions of surface and groundwater. These data play a crucial role in determining underground construction methods and lowering groundwater levels, and also influence the preparation of the schedule.
(3) Meteorological data, including precipitation records, temperature data, wind direction, wind speed and frequency, and the start and end dates of winter and rainy seasons. Based on meteorological data, winter and rainy season construction projects can be reasonably arranged, and relevant seasonal construction measures can be formulated to ensure plan implementation.
2. Technical and Economic Conditions
(1) Local construction industry data, including the distribution of material depots, building material factories, and prefabricated component plants, as well as product names, specifications, supply capacity, and prices.
(2) Local resource data, including the reserves and mining/extraction conditions of materials commonly used in construction, such as sand, gravel, limestone, insulation materials, and clay, as well as the feasibility of their use in construction. Additionally, methods of transporting materials to the construction site, delivery prices, and transportation costs should be understood.
(3) Transportation data, including the distribution of railways, highways, and docks in the construction area, as well as the transportation capacity and prices of road networks.
(4) Power and water supply data, including the location of substations, power supply capacity, and connection points; the existing water supply and drainage systems' pipe diameters, elevations, water pressure, supply and drainage capacity, and feasibility of use.
(5) Machinery base conditions, including the availability of nearby construction machinery bases and equipment, repair workshops, and their utilization for the project.
(6) Labor and living facilities data, including the quantity and quality of available labor, labor costs, and living, medical, and cultural welfare facilities available to construction teams, such as their locations, quantities, equipment conditions, and transportation access.
Fully utilizing local technical and economic conditions can achieve on-site material sourcing, reduce transportation costs, and serve as the foundation for preparing the network schedule.
3. Funding Supply Situation
As everyone knows, construction funds are the economic foundation for project implementation. The availability of funding is crucial to the normal progress of construction, making it a critical guarantee condition for the realization of the construction plan. The preparation of the construction network schedule must be based on funding supply data. Data collection for funding supply includes:
(1) The preliminary design and total budget of the construction project have been approved, and the total investment does not exceed the originally approved budget by more than 10%.
(2) Credit certificates for the project investment, which must:
① The funds allocated by the above approval must be opened as a dedicated account in the Construction Bank;
② Self-raised funds for the project must be deposited first and then approved, and after approval, they can be used only after being deposited for the required duration in the Construction Bank.
③ An audit opinion on pre-construction audit issued by the audit authority. If the project investment source does not comply with national regulations or funds are not secured, or if the project approval procedures and documents are incomplete, the audit authority will not issue an opinion permitting the start of construction.
4. Relevant Standards, Norms, Codes, and Regulations
Relevant standards, norms, codes, and regulations for preparing the unit engineering construction network schedule include:
(1) The National Standard "Technical Specification for Engineering Network Planning" (JGJ／T122—99).
(2) National or local labor norms for building and installation construction. These are used to determine the construction time or flow pace of sub-projects.
(3) National or local budget norms and unit price tables. These are used to prepare construction budgets, control investment use, or obtain project payments from the client during plan execution.
(4) Relevant construction and installation norms, technical standards, operation procedures, and mandatory provisions. These data determine the selection of construction plans or methods and serve as the basis for construction technology and processes.
(5) Other data related to the project, such as bidding documents, engineering contracts, design drawings, minutes of drawing reviews, and instructions or requirements from the project developer and its competent authorities. These often also relate to or determine the preparation of the construction network schedule.