Trench and excavation shoring
Temporary shoring of trenches, launch pits and reception pits to prevent soil collapse and provide safe conditions for installation, repair and trenchless works.
How the work is carried out
A simplified scheme of the key stages. Scroll to see the sequence.
Typical applications
- Launch and reception pits for trenchless works
- Construction and repair of water and sewer networks
- Installation of manholes, chambers and underground equipment
- Work in weak, unstable or water-saturated soils
- Deep trenches and local excavations
- Work near roads, buildings and active utility networks
Things to consider
- The shoring type is selected in the method statement/design
- Depth, soil properties, groundwater and surcharge loads must be considered
- Equipment, materials and spoil must not create unsafe loads at the excavation edge
- Construction dewatering may also be required in water-saturated soils
Technical capabilities
Work stages
- 01
Site assessment
Excavation dimensions, geology, groundwater, loads and adjacent structures.
- 02
Shoring selection
Engineering selection of panels, guides, walers, braces and installation sequence.
- 03
Site preparation
Safe work area, equipment access and water management.
- 04
Staged installation
Excavation and shoring installation as depth increases.
- 05
Removal and completion
Staged element removal during backfilling and site restoration.
What the customer gets
- A temporary shoring system selected for site conditions
- A safe work area for the main construction operations
- Installation and staged removal of shoring elements
- Coordination with the pipeline construction or repair method
- Contract- and design-required documentation
FAQ
Why is trench or excavation shoring needed?
Shoring retains the soil, reduces the risk of collapse and creates a safe work area for personnel and equipment.
How is the shoring type selected?
According to excavation depth and dimensions, soil properties, groundwater level, edge surcharge loads and the type of main works.
Can shoring be used in water-saturated soils?
Yes, but shoring often needs to be combined with sump pumping or construction dewatering.
Does the company remove the shoring?
Yes, temporary elements are removed in stages during backfilling, unless the design requires otherwise.