The engineering difficulty of the works can influence cost in a number of ways. The base cost applies to works on structures on a clear site or disused land in an urban environment.
A set of ‘Engineering Difficulty’ criteria, which are applicable at the activity level, is listed below along with the default uplift factor that has been assigned to each criterion.
Engineering Difficulty of Activities
Default Uplift Factor
Over Water - navigable
1.5
Over Water - non-navigable
1.0
Over Water - tidal
1.2
Over Water - non-tidal
Railway - electrified
3.0
Railway - non-electrified
2.0
Accommodating STATS - water
Accommodating STATS - gas
Accommodating STATS - electric
Accommodating STATS - communication cables
1.3
Accommodating STATS - other
1.1
Over Motorway or A Road
Over B, C or Unclassified Road
At height - between 2 and 5m
At height - between 5 and 8m
At height - above 8m
Confined space
Railway
Diversion of utility services (STATS)
Ground conditions
COSHH
Other Difficulty
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