The next stage of the project lifecycle, the execution phase, now dawns. This stage requires both QA (quality assurance) and QC (quality control). For example, working with reinforced concrete structures, it happens that concrete itself consists of various materials such as cement, sand, gravel, water and additives in addition to steel reinforcement. This must be controlled both for the quality of each component individually as well as for the quality of their mixture. To this end, QC is applied during the preparation of wooden forms and assembling of the steel, casting and processing. As a moment’s reflection upon this example illustrates, the contractor needs to have administrative matters well organized in order to achieve the required quality control, in this case to maintain documents that identify the time and date when work is carried out to determine the number of samples of concrete and the time, date and result of pressure resistance tests on each.
Often during construction, there are changes in the drawings as a result of the emergence of some problems at the site during the implementation or appearance of some ideas and suggestions that reduce the project time. Such changes must be recorded in the project documents, and the drawings themselves adjusted to represent what has actually been constructed.
In most cases the owner have his own organization as follow:
1. Owner has the supervision team on site.
2. Owner chooses a consulting office that performs the design and handles the supervision.
In both cases, there should be strong organization, similar to the organization of the contractor, as it is the tools that control quality.
But when the contractor has a working group who has full knowledge of QA and QC, the dispute between the supervisory and the contractor will be more narrow and it is very important to the owner that the project is in good shape in the end.
Both project owner and contractor will have representatives of their organizations working onsite at the project. If the owner has a competent staff and a strong knowledge about QC and QA while the contractor staff has little or none, there will be problems. On the other hand, if the concept of quality assurance for the work team is quite clear, the construction phase will disclose the true strengths of the contractor.
You can imagine that if the owner has a competent staff with a strong knowledge about QC and QA while the contractor staff has no any knowledge about it, there will be more trouble that will affect the project as a whole.