[Weekly Topic] 10-11-22 Engineering Management: What are the main factors affecting project progress?

1. Factors related to work errors: The entities that affect the progress of project construction include not only the construction company but also the design firm, the project owner, the general contractor, the supervision agency, as well as **, local construction management departments, and the Construction Bank, among other organizations. The project manager must not only control the project’s construction schedule but also ensure good coordination among the relevant parties. Only in this way can the project construction progress be effectively controlled. Otherwise, any operational errors by any department will affect the progress. 2. Project investment factors: In accordance with the provisions of the project contract, the project owner shall allocate an advance payment to the contractor at the start of the project for use in the preliminary construction work. If the project owner fails to allocate the funds for this project on schedule or experiences a shortage of funds during construction, it will inevitably affect the progress of the project. 3. Factors for project design changes Project design change factors include: the project owner or its supervising authority altering the original design functions of the project during its implementation ； Errors or changes in the project design drawings ； Factors such as a slowdown in construction progress, or even suspension of work, resulting from changes to the original construction schedule. 4. Project construction technical factors include: underestimating the technical difficulties of project construction ； Solutions to certain design or construction issues were not taken into account ； No corresponding research and experiments were conducted ； The design intent and technical requirements of the project were not fully understood, resulting in inappropriate measures being taken ； There is a lack of experience in the application of new technologies, materials, and structures, leading to reckless construction and technical accidents such as quality defects in the project. 5. Factors related to material supply and construction organization: Factors such as the inability to deliver materials, tools, or equipment required for project construction to the site, discovery of quality issues with these items upon delivery, as well as improper allocation of labor and machinery, all of which can affect the construction progress. 6. Adverse conditions and unforeseen factors: During project construction, adverse geological conditions such as floods, groundwater, underground faults, karst caves, or land subsidence may arise ； Unforeseen events such as harsh conditions, natural disasters, underground obstacles, and construction accidents may also occur ； All of this will affect the project construction schedule.

There are many factors that affect project progress, among which human factors are the biggest source of interference. Common influencing factors in the project construction process: (owner, contractor, objective conditions) 1. Owner factors ； 2. Survey and design factors ； 3. Construction technology factors ； 4. Natural environmental factors ； 5. Organizational management factors ； 6. Social environmental factors ； 7. Material and equipment factors ； 8. Funding factors, etc.

1. Construction cost； 2. Organization and coordination ； 3. Quality requirements ； 4. Construction period quota ；

What are the factors that affect project progress and what are the solutions? 　There are many factors that affect project progress. These factors can be categorized into human factors, material factors, technical factors, financial factors, engineering hydrogeological factors, meteorological factors, environmental factors, social environmental factors, and other unpredictable factors. Among these, human factors have the greatest and most severe impact. In terms of their sources, they can arise from developers and higher-level regulatory authorities; from design firms; from contractors (subcontractors) and higher-level regulatory authorities; from suppliers of materials and equipment; from supervision agencies; from **the competent authorities; and also from societal factors as well as various natural conditions. These factors are summarized as follows: (This article includes conventional approaches and solutions for project management; due to limited experience, no thorough research was conducted on relevant materials, so there are many omissions and inaccuracies. I urge colleagues to suggest corrections and more practical solutions.) I. Factors originating from the developer 1. Inaccurate survey data provided, especially errors or omissions in geological information, which lead to unforeseen technical obstacles. (Problems may arise during foundation treatment, trench excavation, and support work; is it possible to request an extension of the deadline from the client and to negotiate based on a new design and construction plan? The main responsibility lies with the surveying agency, with the client taking the lead in formulating plans, the design team handling the subsequent design work, and the construction company modifying the original trench construction plan according to the agreed changes before proceeding with the construction.) What are the factors that affect the project timeline and what are the solutions for them? 　　2. The provided control coordinate points and elevation point data are inaccurate or incorrect. (After the contractor arrives on site, this issue should be identified during the initial construction phase and during surveying and layout. The supervisor should promptly request that the client coordinate with the original design and surveying units to provide specific horizontal control points and leveling points. Depending on the extent of the impact on the construction schedule, a request for an extension of the deadline or additional costs for expediting the work may be made.) It should be emphasized that if the construction party proceeds with construction rashly without addressing this issue in a timely manner, the deviation of the survey control points constitutes a serious engineering accident, and I believe the construction party will bear primary responsibility. 3. The procedures related to temporary water and power supply projects are not handled or implemented in a timely manner, resulting in insufficient supply. (In the construction plan, the contractor should carry out proper calculations regarding the temporary electricity usage at the construction site, and provide the client with the estimated electricity consumption as well as the maximum daily electricity demand. The contractor should enter the site only after the client has completed the necessary preparatory work and the construction conditions are ready.) Under normal construction conditions, supply shortages due to procedural issues should not occur. If it occurs, Party A shall coordinate and provide it in a timely manner. Emphasis: This may be caused by Party A’s unauthorized connection to the municipal power and water networks. Currently, approval procedures must be obtained from relevant **departments prior to construction, even for construction waste disposal. 4. Failure to promptly handle procedures for temporary road occupation and land use for construction. (It should be available before the construction team arrives on site.) It is emphasized that relevant approved documents must be obtained in a timely manner; during construction, these documents are essential. 5. Delays in the relocation of above-ground and below-ground structures as well as various pipelines may prevent the construction site from being handed over to the contractor in a timely manner. (Risk is borne by the client; project timeline will be extended.) 6. The work of transplanting, replacing, or cutting down trees on the construction site cannot be completed in a timely manner. (Risk is borne by the client; project timeline will be extended.) 7. The drawings provided are not timely or complete. (Hold professional engineers accountable; it is emphasized that experienced engineers should be assigned to handle the coordination related to technology and design. ) 8. The developer modifies and adjusts the design in accordance with market changes and operational needs. For example: adjusting the product’s positioning, modifying its functional features, changing its usage standards, or even altering the requirements for its use. (For negotiations) 9. To meet the individual needs of home buyers and provide personalized services, the design is modified. (Design changes) 10. Design modifications made due to changes in municipal infrastructure and public facility provisions. (Design change) 11. Design modifications due to the use of immature new materials, new equipment, new processes, or inappropriate technical solutions. (Design changes) 12. Negotiations regarding issues not covered in the contract. For example: material substitution, designated subcontractors during the construction process, etc. 　　13. Negotiations arising from changes in the content and terms of the contract. For example: increases or decreases in the volume of work, additions or removals of work items, expediting of individual parts or sections of the project, changes in the method and price of material and equipment supply, etc. (As stipulated in the contract; note: the contract must comprehensively address both foreseeable and unforeseeable risks associated with the construction process.) 14. Arbitration or litigation arising from contract disputes. (See the arbitration result) 15. The developer fails to supply the materials and equipment in a timely manner; the quantity, model, and technical specifications do not match the actual requirements, and the quality of the goods is substandard. (Materials supplied by the owner that meet the design quality standards may be used; those that do not meet the standards should be reported to the supervisor for handling; if they fail to meet the design requirements, a design change notice is required.) 16. The developer lacks sufficient organizational, management, and coordination capabilities. Poor project organization leads to conflicts among contractors, subcontractors, material and equipment suppliers, as well as various trades, specialties, and construction processes. Problems arising from this situation are not resolved in a timely manner, making it impossible to adhere to the schedule plan and disrupting the normal order of construction. (Hold the Chief Engineer or professional engineers of Party A accountable. It should be emphasized that experienced engineers must be assigned to handle the coordination related to technology and design.) ) 17. The turnover or job reassignments of key managers and engineering personnel at developers result in certain tasks being left unattended or unknown to anyone, thereby hindering the resolution of problems. (The contractor shall promptly fill out the work contact form, which can serve as proof for requesting an extension of the deadline.) 18. The developer fails to clearly define its authorization regarding supervision management, resulting in supervisors being unable to perform their requisite management duties. (Clearly define the supervisor’s authorities and responsibilities; it should be emphasized that the Client must specify this important matter in the contract with the supervisory entity.) 19. Adjustments to the developer’s management structure, equity restructuring, and asset reorganization. (Notify the head office to coordinate the construction progress of this project) What are the factors affecting the project schedule and what are the solutions? 　　20. Delays in various application approval and review procedures submitted to the relevant industry authorities. (The procedures aren’t completed yet; how can any work be carried out?) 21. Various acceptance inspections are not conducted in a timely manner, such as: line verification, trench inspection, various concealed-work inspections, fire safety inspections, civil air defense inspections, etc. (The necessary signatures must be made; those who are supposed to be present must be there, and the required inspections must be carried out. Engineers aren’t paid to do nothing.) 22. There isn’t enough funding for development, so it’s impossible to make payments as stipulated in the contract. (Notify the head office and coordinate) 23. Occurrence of unforeseen events, such as: excessive groundwater, quicksand, geological faults, or caves encountered during construction; discovery of underground cultural relics, fossils, ancient coins, or tombs; discovery of **abandoned ammunition, etc. (See contract provisions regarding negotiations or changes.) II. Factors originating from the design unit 1. Failure to provide the drawings required for construction in a timely manner as stipulated in the design contract. (Compensation shall be paid as stipulated in the design contract.) 2. The number of design personnel assigned to the project design is inadequate; there is a lack of coordination and cooperation among various disciplines, resulting in design inconsistencies between them. (What about the total number of workers?) 3. Insufficient design content and inadequate design depth. 　　4. There is no sound design quality management system; issues such as omissions, missing elements, conflicts, and errors in drawings are prevalent, leading to a significant increase in design changes. (Points 3 and 4 are mainly due to the inadequate work by the reviewers from the design unit and the drawing review agencies.) 5. There was insufficient and timely coordination with various specialized design institutes, which led to inconsistencies in the drawings; as a result, construction had to proceed while modifications were being made. (Party A should pay attention to the detailed provisions regarding drawing quality and compensation outlined in the design contract; the construction party shall act in accordance with the design changes.) 6. The design unit may be unable to fulfill its obligations under the design contract due to reasons such as adjustments in its management structure, equity structure, staffing, or asset restructuring. (Termination of contract; Party A demands compensation for breach of contract) 7. For various reasons, the design institute subcontracts design tasks, which may lead to contract disputes with subcontractors, thereby giving rise to arbitration or litigation. 　　8. Design issues that arise during construction cannot be resolved in a timely manner as required by the developer. (What kind of design is this? Invite those experts who are stationed in the yard instead; they’ve been trained for just such occasions.) 9. Unable to participate in various acceptance procedures on time. (It is purely a matter of work attitude and professional ethics; the client can deduct the quality guarantee amount from the design contract fee.) III. Factors originating from the contractor (subcontractor) 1. The management staff assigned by the project management team are not capable of meeting the requirements of construction work; their management skills are poor and they lack experience, which leads to chaos in project organization and prevents completion according to the planned schedule. (Pay attention to process control, identify problems early, and correct them promptly.) 2. The qualifications, expertise, experience, skill levels, and number of construction workers are not sufficient to meet the requirements of the construction work. (The supervisor must conduct strict reviews of the construction unit’s applications regarding their qualifications to commence work; random checks should also be carried out to verify whether on-site personnel are present at their posts.) 3. The construction organization plan is unreasonable; the construction schedule is illogical; and the chosen construction methods are inappropriate. (Comprehensive consideration is required) 4. The scheduling of construction tasks is unreasonable; it fails to address the timing sequence and overlap between different tasks, thereby preventing the achievement of quality standards, optimal use of space, time savings, and an orderly planning of the project timeline. (The supervisors of various specialties and the heads of subcontractors should report on the progress of construction on a weekly basis. The general contractor should hold regular coordination meetings to ensure smooth progress; it is recommended that such meetings be held daily towards the end of the construction period, in order to address promptly any issues related to coordination between different specialties or concurrent construction activities. It should be emphasized that the general contractor must assign engineers and project managers with strong comprehensive skills and experience to be on site.) 5. It is not possible to allocate labor forces and construction equipment in a timely manner based on the conditions at the construction site. (Previously formulate and review plans regarding labor and tool usage. What are the construction timelines, progress schedules, factors affecting project progress, and their corresponding solutions?) Prepare materials in a timely manner and allocate them reasonably. 6. The mechanical equipment used for construction is not properly configured, failing to meet the construction requirements. (As above) 7. Malfunctions occur in the water and power supply facilities for construction, as well as in the construction machinery. (Construction machinery should be under the daily care and maintenance of designated personnel.) 8. Material supply is delayed; the quantity, type, and technical specifications of the materials are incorrect, and the quality of the supplied materials is substandard. (Management of procurement and inventory) 9. The general contractor fails to coordinate the capabilities of the various subcontractors, resulting in inadequate and untimely cooperation among them. training.mypm.net 10. Disputes arising from contract conflicts with contractors and subcontractors, material suppliers, and other collaborating parties that lead to arbitration or litigation. (Subject to the arbitration outcome, the responsible party shall still be accountable for the timeline and quality. 11. If the contractor (subcontractor) lacks sufficient own funds or has an inadequate funding arrangement, it will be unable to pay the relevant outstanding expenses.) (The project department should promptly compare the budgeted costs with the actual costs of the work completed, analyze the reasons for any discrepancies, and use earned value management techniques to conduct timely assessments and comprehensive control, ensuring expenditures remain within the budget.) 12. Investigation and handling of safety incidents and quality issues. (Treat it promptly in accordance with the emergency plan) 13. Theft and damage to key materials, equipment, and tools. (Improve on-site management levels and pay attention to the protection of finished products. )blog.mypm.net 14. Poor management at construction sites leads to the outbreak of plagues, infectious diseases, and food poisoning among construction workers. (At this point, there’s no point talking about project timelines; safety in production is of utmost importance. First, resolve and arrange these matters properly – compensate those who are due compensation as soon as possible, and report everything without omitting a single detail.) 15. The contractor (subcontractor) may be unable to fulfill its obligations under the relevant contracts due to reasons such as changes in management structure, equity structure, personnel changes, or asset restructuring. 　　IV. Factors originating from material and equipment suppliers (Supplier-related issues should be specified in the supply contract and handled in accordance with that contract; management issues on the part of the construction unit require improved professional skills and better management practices, from budgeting to material procurement, to prevent such problems from recurring.) 1. The supply of raw materials and auxiliary components is insufficient to meet production needs. 　　2. Malfunctions occur due to improper maintenance or use of production equipment, preventing normal production. 　　3. The mode of transportation and capacity do not meet the requirements. 　　4. The model, parameters, and quantity of the produced products are incorrect, or they do not match the sample or the contract specifications. 　　5. The quality of the produced products is substandard. 　　6. Damage and loss of goods caused by improper packaging, storage, transportation, and handling. 　　7. Contract disputes arose with collaborating parties, leading to arbitration and litigation. 　　8. Investigation and handling of safety accidents. 9. The supplier lacks sufficient own funds or has unreasonable arrangements for the use of funds, resulting in an inability to pay the relevant payable expenses. training.mypm.net 　　10. The supplier is unable to fulfill its obligations under relevant contracts due to reasons such as changes in the management structure, equity adjustments, personnel changes, or asset restructuring. What are the factors that affect project progress and what are the solutions? 　　V. Factors originating from the supervision unit (as stipulated in the supervision contract; if the requirements of the project are not met, the supervision unit can be requested to make replacements) 1. The education background, specialty, qualifications, experience, skill level, number, age, and health condition of the supervision engineers assigned to the supervision team do not meet the needs of project supervision. 　　2. Lacking a strong sense of responsibility and weak management and coordination skills, resulting in an inability to take effective measures in a timely manner based on the actual conditions at the construction site to ensure that the project progresses as planned. 　　3. Performance of the contract cannot be ensured due to reasons such as adjustments in the supervision and management structure, equity changes, personnel changes, or asset restructuring. 　　VI. Factors arising from the **competent authorities (which should be fully taken into account when assessing risks; changes in laws and regulations may allow for adjustments to the execution of contracts as permitted by relevant documents issued by the construction commission). 1. Adjustments to relevant policies, laws, regulations, and management rules. 　　2. Various procedures have changed. 　　3. **Adjustments to management organizational structure, management responsibilities, and staffing.** 　VII. Factors arising from societal and various natural conditions (force majeure is excluded from the contract amount and can be adjusted according to what actually occurs; other foreseeable and avoidable factors can be negotiated depending on the responsible party). 1. Natural disasters such as severe weather, **, floods, fires, etc. 　　2. Various sudden criminal cases. 　　3. Major **events, social events. 　　4. The urban water, power, and gas supply systems fail and cease to provide services. 　　5. Traffic control, traffic disruptions. The above factors include, but are not limited to, the following. Considering the extent to which these various factors affect project progress, developers and contractors (subcontractors) play the most important role, followed by design firms and material suppliers. As the organizer and manager of construction projects, developers need to effectively control progress. What are the factors that affect project progress and what are the solutions for them? To do this, it is necessary to conduct a comprehensive evaluation and analysis of various factors that affect progress. Source: Fangcewang

This post was last edited by ms3210 on 2010-11-22 10:39 ]/hide]

There are many factors that affect engineering projects, but they can be summarized into five main aspects: Man, Material, Machine, Method, and Environment, commonly referred to as the 4M1E factors. (1) Quality of personnel: People are the main actors in production and business activities; they are also the decision-makers, managers, and operators in project construction. The entire process of project construction, including planning, decision-making, surveying, design, and construction, is carried out by people. The quality of personnel has a direct and indirect impact on the quality of planning, decision-making, surveying, design, and construction. Therefore, implementing a system for managing business qualifications in the construction industry, as well as requiring professional workers to hold relevant certificates, is an important management measure to ensure the quality of such personnel. (2) Engineering materials: Engineering materials directly affect the structural stiffness and strength of construction projects, influence their appearance and aesthetic quality, impact their functional capabilities, and affect their safety in use. (3) Mechanical equipment: The quality of the machinery and equipment used in construction projects directly affects the quality of the functional performance of those projects. The type of construction machinery and equipment, whether it suits the characteristics of the construction work, whether its performance is advanced and stable, and whether it is easy and safe to operate – all these factors affect the quality of the construction project. (4) Methods In construction projects, whether the construction plan is reasonable, whether the construction techniques are advanced, and whether the construction operations are correct all have a significant impact on the quality of the project. Vigorously promoting the use of new technologies, new processes, and new methods to continuously improve the level of process technology is an important factor in ensuring the steady improvement of project quality. (5) Environmental conditions Environmental conditions include: the engineering and technical environment, the engineering operation environment, and the engineering management environment. It has a specific impact on the quality of the project. Strengthening environmental management, improving working conditions, managing the technical environment properly, and taking necessary measures are important guarantees for controlling the impact of the environment on quality.

These factors can be categorized into human factors, material factors, technical factors, financial factors, engineering hydrogeological factors, meteorological factors, environmental factors, social environmental factors, and other unpredictable factors. Among these, the human factor has the greatest and most severe impact. In terms of its origins, it stems from the owner’s side ； There are those from the design unit ； There are those originating from contractors (subcontractors) ； There are those from material and equipment suppliers ； There are those from the supervision unit ； There are those from the **competent authorities** ； There are also those that stem from society and various natural conditions. These factors are summarized as follows: I. Factors originating from the owner side: 1. Inaccurate design information provided, especially errors or omissions in geological data, which lead to unforeseen technical difficulties. 2. Temporary water and power supply is not provided in a timely manner, and the supply volume is insufficient. 3. Temporary occupation of roads and land for construction is not carried out in a timely manner. 4. Delays in the relocation work above and below ground prevent the construction site from being made available in a timely manner. 5. The provided drawings are not timely or complete. 6. Design modifications due to the use of immature new materials, new equipment, new processes, or inappropriate technical solutions. 7. Arbitration or litigation arising from contract disputes. 8. The contractor fails to supply materials and equipment in a timely manner; the quantity, model, and technical specifications do not match the actual requirements, and the quality of the goods is substandard. 9. The owner lacks the necessary capabilities for organization, management, and coordination; poor project organization leads to conflicts among contractors, subcontractors, material and equipment suppliers, as well as among different types of workers, specialties, and construction processes. Issues that arise are not resolved in a timely manner, preventing progress from being made according to the planned schedule and disrupting the normal order of construction. 10. The turnover of key managers and project management personnel on the owner’s side, or changes in their job positions, result in a lack of oversight or awareness regarding relevant tasks, thereby hindering the resolution of problems. 11. Delays in submitting various applications and going through approval and review procedures with the relevant authorities. 12. Various inspection activities are not carried out in a timely manner, such as wire inspections, trench inspections, various concealed work inspections, fire safety inspections, and civil air defense inspections. 13. Insufficient funds prevent the payment of contract amounts as stipulated in the contract. 14. Occurrence of unforeseen events, such as excessive groundwater, geological faults, or karst caves encountered during construction. II. Factors originating from the design unit: 1. Failure to provide the drawings required for construction in a timely manner as stipulated in the design contract. 2. The designers assigned to the project design are inappropriate, and there is a lack of coordination among different specialties, which leads to design conflicts between them. 3. The design content is insufficient and the depth of design is inadequate. 4. There is no sound design quality management system, and problems such as omissions, gaps, and errors in the drawings are severe, resulting in a significant increase in design changes. 5. Coordination and cooperation with various professional design institutes were not timely or adequate, resulting in inconsistent drawings and forcing adjustments to be made during construction. 6. Unable to resolve design issues that arise during construction in a timely manner as required by the owner. III. Factors originating from the contractor (subcontractor): 1. The management personnel assigned by the project management team are not sufficient to meet the construction requirements; their management skills are poor and they lack experience, which leads to chaos in project organization and prevents completion according to the planned schedule. 2. The qualifications, credentials, experience, skill levels, and number of construction workers are insufficient to meet the construction requirements. 3. The construction organization design is unreasonable, the construction schedule plan is inappropriate, and the construction methods used are unsuitable. 4. The scheduling of construction tasks is unreasonable; it fails to address the timing sequence and overlap between various tasks, thereby preventing the achievement of quality standards, efficient use of space, time savings, and proper planning of the project timeline. 5. It is not possible to allocate labor and construction equipment in a timely manner based on the conditions at the construction site. 6. The allocation of construction machinery and equipment is unreasonable, failing to meet the construction requirements. 7. Malfunctions occur in the water and power supply facilities for construction, as well as the construction machinery. 8. Delayed material supply, incorrect quantities, models, and technical parameters of the materials, as well as substandard supply quality. 9. The contractor (subcontractor) lacks sufficient own funds or has an unreasonable funding arrangement, resulting in an inability to pay the relevant payable expenses. 12. Investigation and handling of safety accidents and quality incidents. 13. Poor management at the construction site. IV. Factors originating from material and equipment suppliers 1. The supply of raw materials and auxiliary components fails to meet production needs. 2. Malfunctions occur due to improper maintenance or use of production equipment, preventing normal production. 3. The mode of transportation and capacity do not meet the requirements. 4. The model, parameters, and quantity of the produced products are incorrect, or they do not match the samples or the contract specifications. 5. The quality of the produced products is substandard. 6. Damage and loss of goods caused by improper packaging, storage, transportation, and handling. 9. The supplier lacks sufficient own funds or has an unreasonable arrangement for the use of funds, resulting in an inability to pay the relevant payable expenses. 10. Failure to fulfill contractual obligations due to reasons such as adjustments in the supplier management structure, equity changes, personnel changes, or asset restructuring. V. Factors originating from the supervision unit: 1. The education background, specialty, qualifications, certifications, experience, competence, number, age, and health status of the supervision engineers assigned to the supervision team do not meet the requirements for project supervision. 2. Lacking a strong sense of responsibility and weak management and coordination skills, failing to take effective measures in a timely manner based on the actual conditions at the construction site to ensure that the project is carried out as planned. 3. Performance of the contract cannot be ensured due to reasons such as adjustments in the supervision and management structure, equity changes, personnel changes, or asset restructuring. VI. Factors originating from the **competent authorities 1. Adjustments to relevant policies, laws, regulations, and management rules. 2. The procedures for various formalities have changed. 3. **Adjustments to management department structures, management responsibilities, and staffing.** VII. Factors arising from society and various natural conditions 1. Natural disasters such as severe weather, **, floods, fires, etc. 2. The city’s water, electricity, and gas supply systems fail, resulting in a disruption in these services. 3. Traffic control, traffic disruptions. 4. Various sudden criminal cases. 5. Major **events, social events. Among the various factors mentioned above, in terms of their impact on the project schedule, the owner and the contractor play the most important role, followed by the design firm and the material suppliers. As the organizer and manager of a construction project, the owner must conduct comprehensive evaluations and analyses of various factors that affect progress in order to effectively control it. On the one hand, this can facilitate the full utilization of favorable factors as well as the proper prevention and overcoming of unfavorable ones, enabling progress goals to be set in a more scientific and rational manner, in better alignment with reality, and with greater feasibility – thus ensuring both initiative and reliability ； On the other hand, it also facilitates the formulation of preventive measures in advance, effective control during the process, and proper remedial actions afterward, thereby reducing the discrepancy between the actual progress and the planned progress and achieving proactive and dynamic control over the schedule.

(1) Owner factors. In the event of design changes due to changes in the owner’s requirements ； The construction site conditions that should be provided cannot be made available in a timely manner, or the available site does not meet the normal requirements of the project ； Failing to make payments to the construction contractors or material suppliers in a timely manner, etc. (2) Survey and design factors. If the survey data is inaccurate, especially if there are errors or omissions in the geological data ； The design is incomplete, the standards are not applied properly, and there are defects or errors in the design ； The design does not take into account, or inadequately considers, the feasibility of construction ； The construction drawings are not supplied in a timely manner, are incomplete, or contain significant errors. (3) Construction technology factors. If the construction method is incorrect ； Unreasonable construction plan ； Improper construction safety measures ； Application of unreliable technologies, etc. (4) Natural environmental factors. Such as complex engineering geological conditions ； Unknown hydro-meteorological conditions ； Protection and handling of buried cultural relics ； Force majeure such as floods, **, typhoons, etc. (5) Social environmental factors. Such as interference from construction of nearby projects by other units ； Restrictions on holiday traffic and urban appearance rectification ； Temporary water cutoffs, power outages, road closures ； As well as common legal and institutional changes abroad, etc. (6) Organizational management factors. Delays in the approval processes for various applications submitted to the relevant authorities ； Omitted clauses and improper phrasing at the time of contract signing ； Poor planning and inadequate organization and coordination have led to work stopspending on materials and disruptions in related operations ； Poor leadership and inadequate command lead to conflicts in coordination and cooperation among the various units involved in the construction project, as well as between different specialties and construction phases. (7) Material and equipment factors. Errors in the supply of materials, components, tools, and equipment, such as those where the variety, specifications, quality, quantity, or timing do not meet the project’s requirements ； Improper use of special and new materials ； Inadequate construction equipment, improper selection, installation errors, and malfunctions, etc. (8) Financial factors. Such as delays in payment by relevant parties, insufficient funds, funding shortages, exchange rate fluctuations, and inflation.

1. Poor turnover of project funds； 2. Adverse weather conditions ； 3. The delivery timeline for equipment and materials exceeds the plan ； 4. The construction unit lacks machinery, personnel, or has insufficient capabilities ； 5. Sudden major accidents.

The most important factor affecting project progress is the delivery timeline of materials. As the saying goes, even a skillful housewife can’t cook without rice. Without the materials arriving, all progress is in vain. Secondly, rework is also a very important factor that affects progress. When construction problems arise, it is sometimes necessary to suspend work entirely until the issues are resolved.