Standard Solutions
Introduction:
The use of proprietary equipment such as trench boxes manhole boxes, manhole brace and waler frames to support excavations is common place in the UK.
For relatively shallow excavations (i.e. less than 3 or 4m deep) it is often possible to categorise soil types and support systems into a series of standardised design cases so as to avoid having to produce a site specific design.
Provided the site and ground conditions suit, a pre-designed Standard Solution can be used. This should be selected by a competent member of the site team and checked/approved (BS5975:2019, Category 0) by a second competent member of the site or design team.
If any parameter exceeds the assumed conditions, then the user should obtain a site-specific design by contacting Groundforce on 0800 000 345.
Note:
- These standard designs are only valid when used in conjunction with Groundforce Shorco equipment.
- These standard designs are only valid in reasonable ground conditions; i.e. If the ground is mainly cohesive it should be reasonably firm or if the ground is mainly granular it should be reasonably compacted.
- Groundwater is not likely to be present within the depth of the dig.
- The excavation area is reasonably flat and is not located adjacent to any significantly sloping ground e.g. an embankment.
- No abnormal surcharges such as railways, building foundations or cranes are likely to exist within close proximity of the excavation.
- Excavations are not to be open for greater than twelve weeks duration.
