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If I remember right from collage , we are not allowed to drill for running Gas . So I assume is to do with anything
 
New houses the supplies are ducted through the slab, a 4 inch hole to the foundations for supplies in an older property I doubt will cause any concern.
 
I hired a huge powerful thing for drilling cores last year to go through a granite wall for a flue and it was only £50 for the day
 
You shouldn't really drill trough foundations ie strip foundations, especially a 4" hole as it can weaken them. Either go under them or through above them.
A floor slab is not a foundation.
 
It could be one of this houses where that had basement floor dug out ! I have seen few in Lomdon where they have made not lift extension but basement extension
 
Spit and a decent chisel. Dig 900mm trench outside and 900mm deep trench on inside and bash chisel through the 300mm of soil under the wall. Fit in a 75mm civils duct and grout it all back in . Bylaws inspector will be chuffed.
 
Spit and a decent chisel. Dig 900mm trench outside and 900mm deep trench on inside and bash chisel through the 300mm of soil under the wall. Fit in a 75mm civils duct and grout it all back in . Bylaws inspector will be chuffed.

and amazed!!!!!
 
Spit and a decent chisel. Dig 900mm trench outside and 900mm deep trench on inside and bash chisel through the 300mm of soil under the wall. Fit in a 75mm civils duct and grout it all back in . Bylaws inspector will be chuffed.
Which is fine as long as foundations are higher then 600, not so good if foundation is 750 deep, and from 600 onwards is clay!! I think you have to take practicality in to consideration, if foundation is 750 deep then going above won't be an issue, if it is 300 deep then will be and issue, every house is different, different depth foundations, different size foundations, different soil, different rules
 
Which is fine as long as foundations are higher then 600, not so good if foundation is 750 deep, and from 600 onwards is clay!! I think you have to take practicality in to consideration, if foundation is 750 deep then going above won't be an issue, if it is 300 deep then will be and issue, every house is different, different depth foundations, different size foundations, different soil, different rules

its victorian they dont abide to todays standards
 

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