Hydraulic and earth engineering

SECTION I - CLASS DEFINITION

This class provides for subject matter relating to the following when not provided for elsewhere:

The control or treatment of water in open channels, naturally or artificially occurring bodies of water, or of water otherwise lying on the earth"s surface.

The control or treatment of earth material is situ, and the securement or stabilization of structures in the earth.

Storage of fluid in underground cavities and disposal of waste in the earth.

Tunnel construction or pipe or cable laying or retrieving.

Apparatus and methods by which underwater work operations may be performed.

Apparatus and methods for launching a marine vessel into or removing it from a body of water, transportation of a vessel across dry land, or exposing a normally wetted surface, e.g., a vessel"s hull, to the atmosphere.