Depth of design changes
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In project management, it is common to encounter the issue that the design changes provided by the design institute are not detailed enough; for example, there are no drawings showing the specific modifications on site, only a note stating that they will be determined on site, which ultimately forces the owner and the construction contractor to discuss these matters as construction proceeds. I wonder if you guys have any similar experiences?
It shall be based on meeting the requirements of on-site construction; no further return to the design for clarification is allowed.
The extent of design changes is primarily determined by the format or content of the design change notification forms. The formats of these forms vary slightly from one organization to another, as each organization has its own conventions. In fact, there are regulations in this regard; for processes and pipelines, the \"Code for Construction and Acceptance of Industrial Metal Piping Projects\" GB50235-97 and the \"Uniform Requirements for the Content and Depth of Construction Drawings in Chemical Process Design\" HG 20519-92 provide relevant formats that can be used as references.
That’s right; I work in a design firm, and I often make such changes. The reasons are as follows: first, I’m not familiar with the conditions on site, and as long as the changes don’t affect the technical requirements, it’s acceptable. Second, it can be difficult to explain things clearly, and it’s hard to create accurate drawings; even if drawings are made, the dimensions may not be precise. It’s better to leave some flexibility for the construction team.
I cannot agree with what was said upstairs. If the construction company is to handle the design, what is the role of the design institute? It’s way too easy to get the design fee.
This is quite normal and something that is often encountered at construction sites. It usually occurs in pipeline construction. The main reasons are: 1. The quality of the design drawings themselves is poor; 2. The professionals responsible for pipeline design lack on-site experience; 3. There is poor coordination among different specialties involved in the design process; 4. The design was carried out without sufficient design parameters. Such issues are generally resolved on-site by relying on the construction party’s extensive construction experience. Before starting work, a written solution is submitted to the owner, supervisor, and design team for approval, and construction can proceed only after approval is given.