What type of specification requires maintaining free water in foundations and trenches?

The type of specification that requires maintaining free water in foundations and trenches is known as a performance specification. This approach focuses on the desired outcomes and performance criteria rather than detailing how to achieve them. In the case of maintaining free water, the specification would clearly outline the expected results, such as ensuring a dry foundation during construction, but it could allow for various methods to achieve this outcome.

Using a performance specification gives contractors the flexibility to innovate and choose the most efficient means of meeting those requirements. This is particularly important in construction, where factors such as site conditions and project schedules vary widely, and contractors may employ different techniques to manage water in foundations and trenches effectively.