1. In any construction project, the time element is a very critical factor
2. The construction project should be completed at some point because there is a need and many may depend on the project to be completed as agreed.
3. The contractors have huge resources tied up to the project and any delay will affect the contractors in part large costs of crew, equipment, rent etc.
4. Many actors are involved in a project, and it is essential that everyone has a predictability in terms of when to start their part of a work and when to finish.
5. Progress plans are therefore a key management tool for the subcontractor, for the total/general contractor, for the designers and for the builder with his construction management apparatus.
6. In construction law, it is a key principle that the total contractor does not pay until work and materials have been added to the construction site to be built in.
7. A-account billing of the contract sum is therefore agreed and preferably so that the payment schedule follows the progress schedule.
8. Therefore, when the subcontractor invoices, the total/subcontractor will compare actual progress with the progress plan, and thus check whether the entire a account invoice can, or should, be paid.
9. If there are large offsets between actual and planned progress, the result may be that the progress plan must be adjusted to give a correct picture of the situation.
