Section 21-2. Work instructions and plans for the work

Plans shall be in place before the excavation of trenches or shafts deeper than 2.0 m.
The plan shall:
  1. a.
    show the longitudinal profile with a description of soil types down to 1.0 m below the bottom of the trench or shaft for trenches without shoring;
  2. b.
    show typical cross sections. When shoring (bracing) is planned, this shall be indicated on the drawing;
  3. c.
    show where the excavated material is to be placed;
  4. d.
    contain work instructions that cover all work operations.
In the case of minor jobs and in emergencies, the plans can be simplified to a schematic.