The requirements for general undercutting, i.e. within gullies, for the fill foundations and below areas of cut, shall be as follows:
- All organic materials, other unsuitable materials and materials with undrained shear strength of less than that specified in the Contract Documents or instructed by the Engineer, shall be undercut.
- The depth of the undercut will be specified by the Engineer when the material at the subgrade level has been exposed and evaluated.
- On completion of the undercut, the surface shall be shaped, trimmed and compacted so as not to hold water.
- The Contractor shall treat any excavated undercut material as unsuitable and dispose of it accordingly unless instructed otherwise by the Engineer.
Definitions in this section