Contingency. Often a percentage of the GMP that provides the contractor with a financial buffer to account for unforeseen and unknown conditions. Allowances. An amount set aside for known unknowns related to materials, labor, and other project costs.
This contingency is normally calculated as a percentage. If the phase is 100 days of effort, contingency at 20% would be another 20 days. As the project progresses, the level of risk reduces as the requirements and issues become known, so the percentage will be reduced.
The recommended percentage for a contingency fund is between 5-10% of the total budget, but this may vary depending on project complexity and past experiences.
A contingent contract is a legal agreement in which the terms and conditions only apply or take effect if a specific event occurs. Essentially, the parties involved agree to perform actions or obligations based on the occurrence or non-occurrence of a particular event in the future.
The major difference between lump sum and EPC is that, in EPC the contractor has the responsibility of design and construction. b. Where as in lump sum contract the design and drawings are prepared by the technical team of the owner.