Field Orders

A written order issued by the engineer clarifies or interprets the contract documents in accordance with the terms of the contract or orders minor changes in the work in accordance with the terms of the contract.

Filter

Granular material placed around a submarine pipe to facilitate drainage and at the same time strain or prevent the admission of silt or sediment.

Filter Cake

A thin layer of clay or polymer from the slurry at the face and perimeter of the formation being excavated. The filter cake is formed through filtrate loss.

Final Drive

The final reduction unit in the drive line.

Fines

Portion of a soil finer than a No. 200 (75 mm) US standard sieve.