Site supervision is a crucial part of every construction project, as it ensures that all works are carried out in accordance with the planned design, applicable laws and technical standards. Without adequate supervision, construction can encounter numerous problems that can lead to delays, increased costs, and even serious safety risks. In this article, we will explain in detail what supervision is, who performs it, what the responsibilities of supervision are, how it is carried out, and how the cost of supervision is determined.
What is site supervision?
Site supervision is the process of monitoring and controlling all phases of construction to ensure that the works are carried out according to the planned design, specifications, legal and technical standards, and that all safety standards are observed. Supervision is carried out throughout the entire construction process, from preparatory works to the final inspection, under the supervision of a responsible person or team with the professional knowledge and authority to manage the construction site.
Supervision can be internal (if organized by the investor or contractor) or external (if an independent professional or supervision team is engaged), and most often a combination of both is used.
Who performs site supervision?
Site supervision can be performed by several different professionals, depending on the type of project, the size of the facility, and the specific characteristics of the construction site. The most common persons performing supervision are:
1. Construction supervision
Construction supervision is carried out by a licensed engineer or site supervisor , who is responsible for monitoring the entire construction process. These persons perform supervision based on an agreement between the investor and the contractor, and they most commonly come from the construction profession . Construction supervision includes:
Carrying out all technical calculations
Checking the implementation of design solutions
Checking the quality of construction materials
Controlling the quality of executed works
Monitoring compliance with construction deadlines
Regular construction site inspections
2. Specialists for specialized systems
For larger and more complex projects, specialists from other fields are also engaged, such as electrical engineers , water supply and sewerage engineers , mechanical engineering (HVAC systems), or architects . These experts supervise specific installations and systems in the building, ensuring that all work in those areas meets legal and technical standards.
3. Independent supervision
To ensure objectivity and quality, investors often engage an independent supervising engineer or a team of supervising engineers for each phase . This specialist is independent of the contractors and can provide unbiased control and advice throughout the entire construction process.
What are the responsibilities and obligations of supervision?
Supervision of the construction site has a range of responsibilities and obligations, which include:
1. Verification of compliance with the design
The supervising authority must ensure that all work on the site complies with the approved main design . Any change to the design must be approved in advance, and the contractor must document all changes by entering them in the construction log or by official correspondence.
2. Quality control of materials and work
The supervising authority is responsible for checking the quality of materials used on the site, and must ensure that all materials meet technical specifications and standards. It must also regularly monitor the execution of work to ensure that it is performed in a manner that satisfies technical norms and quality standards.
3. Site safety
The safety of workers and all persons present on the site is crucial. The supervising authority, as well as the contractor, must monitor the implementation of all safety measures and ensure that the site is safe for workers and visitors. This includes checking protective equipment, equipment condition, and compliance with all legal regulations on occupational safety.
4. Monitoring costs and deadlines
The supervising authority must track and control site costs , to ensure that the budget is not exceeded. It is also responsible for monitoring construction deadlines , and for reporting to the investor any delays or issues that may affect project completion.
5. Reporting to the investor
The supervising authority is required to regularly report to the investor on work progress, site issues, necessary design changes, and all key aspects related to the site. These reports may be daily, weekly, or monthly, depending on the type of project.
How is site supervision carried out?
1. Beginning of supervision
Site supervision usually begins before the commencement of works , when all design documents are approved, preparatory works are carried out, and the foundations for the construction site are established. At this stage, the supervising authority conducts an inspection and introduces safety and quality standards.
2. Continuous supervision during construction
Supervision is carried out throughout the entire duration of the construction site. The supervising authority checks materials, the contractor's work, and verifies compliance with all planned and approved works. It also manages documentation related to supervision, records every change to the design, and the contractor's responsibilities.
3. Final supervision and report
After the completion of the works, the supervising authority conducts a final inspection of the construction site and prepares a report on the completed works. This report includes all aspects of construction, the quality of the executed works, compliance with the design and legislation.
The price of site supervision
Price of site supervision depends on several factors, including the type of project, the scope of construction, the complexity of the works, and the duration of supervision. Prices are usually formed based on:
1. Supervision hourly rate
Supervisory bodies usually charge their services by hourly rate or project duration . The rate may vary depending on expertise and type of supervision.
2. Percentage of the total project price
In some cases, the supervision price may be expressed as a percentage of the total site value. Usually this is between 1% and 3% of the total project value.
3. Fixed amount for specific projects
For smaller projects, such as renovations of small buildings or houses, the supervision price may be fixed and varies depending on the scope and duration of construction.
Conclusion
Site supervision is a key component of any construction project as it ensures that all works are carried out in accordance with the design, laws, and safety standards. Engaging a qualified supervising engineer or a team of supervising engineers for each phase helps prevent errors, delays, and accidents on the site, thereby protecting both the investor and the contractor. The supervision price depends on the specifics of the project, but it certainly represents a valuable investment in the successful completion of the site.
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