calculating a Zone of Influence for a railway tunnel Air shaft

[matstand]

Hello

 

I'm trying to get permission to build in garden.  which is complicated by the nearby presence of a railway airshaft. (more details https://forum.buildhub.org.uk/topic/36112-network-rail-and-the-air-shaft/ )

 

 

Network Rail have previously stated that the shaft has a Zone of Influence  (ZOI) of 15m, which takes up most of the building opportunity. But they have just admittedly that the ZOI is calculated by a simplistic method (and even that isnt applied correctly) and that they would be ammenable to reviewing a ZOI calculated by alternative method and presented in a TMS desk Study. Does anyone know what sort of engineering company I need to find that can calculate this for me?

 

thanks

 

 

[Temp]

All I know is that for a mine shaft the minimum zone of influence is normally 20m.

 

 

[Mr Punter]

Can you see if Network Rail have any suggestions as to which engineer to use?

[matstand]

HI Both. 

 

There were orginally 13 airshafts, all 140+ years old, under the town of sevenoaks.  some of which have buildings a mere 3-4 m away.  no real guisance.

 

They havent yet, and I would be concerned that they would want a large engineering consultancy that would not be interested in helping me with my small requirement for a single dwelling.

 

 

m

 

[Temp]

Perhaps look at the planning files for one of these houses that are close. See if there are any reports in there and who wrote them.

 

Councils normally have a map search feature that allows you to find planning applications within x meters of a location you specify.