Trench Shoring
 
Ching Contracting Ltd have recognised that the future of safe and economic deep excavation lies in the use of an adaptable and efficient trench shoring system.
Safety regulations dictate that any excavation over 1.5 metres in depth must either have the walls of the excavation benched or battered back to a safe slope.  Alternatively some form of protection for workers in the trench such as certified trench shielding must be used.  Often this does not happen which puts workers at risk of injury or death and employers at risk of prosecution and substantial costs.  The Principal is also exposed to risk if reasonable efforts have not been made to ensure that the work is carried out safely under the direction of the Contract Engineer.
Often the option of battering or benching trench wall is not possible due to limited space or the substantial reinstatement costs as would be encountered in a busy street.  Trench shields may be effective in protecting the occupants in the trench but in most cases do not actively support the trench walls leading to additional reinstatement costs and possible disruption to nearby services.
 
The trench shoring system that Ching Contracting Ltd employs is installed progressively with the excavation work and removed gradually with the backfilling process.   At all times the trench walls are supported to guard against collapse.

The distinct advantages of this system are:

  • Complete safety for workers in the excavation.
  • Minimises reinstatement costs by minimising trench widths.
  • Can be used immediately adjacent to existing services, buildings and live traffic lanes.
  • Will support excavations up to 4.0 metres deep out to 3.3 metres wide.