Design changes are a common occurrence in construction projects. They can have significant implications on project timelines, budgets, and overall success. The following are some of the reasons that could necessitate design changes.
- Change of requirement/specification by the client
Throughout a project, the wants and requirements of the client can frequently change for a number of reasons such as functionality, and aesthetic preferences. Whenever the client changes the project scope or plans after work has begun, it necessitates rework in accordance with the changed specifications.
- Errors and inconsistencies in design
Design complexity could lead to inconsistencies that can be discovered during the implementation of the designs. Inconsistencies in the design can also be caused by Incomplete plans and specifications caused by human error or negligence.
- Inadequate coordination among consultants
Since most construction projects are multi-participant in nature, coordination is important. Lack of coordination among project participants may cause disputes that lead to an adverse influence on the project.
- Unclear initial design brief
Clearly defining the project brief is one of the most important issues in any construction project, as it has a direct impact on project performance in terms of budget and time. The design idea should be clearly outlined in the project brief to enable effective performance in the project and to avoid assumptions.
- Regulatory and compliance issues
It is necessary to incorporate local authorities’ special codes and regulations into the design. A lack of knowledge about governmental and legal restrictions or changes in such regulations may lead to changes in design.
- Unforeseen site conditions
When the ground conditions or the physical state of existing structures differ from what was anticipated, it can have a major effect on the project including changes in design. Unexpected soil conditions such as high water-tables may alter foundation designs.
- Budget constraints
Cost overruns and funding limitations may require redesigning of elements to cut on cost. An example is the incorporation of flat roofing due to the high cost of gable roof construction.
