Installing drain/soil pipe through an existing foundation

[D2bee]

Hi All, 

I have been reading some stuff on here and appreciate the generosity of you all in this community. 

This is my first self build/major extension project and will appreciate all the help available from all you Knowledgeable and experienced people are out there. 

I bought a property which the previous owner had commenced a double storey extension project with foundations in situ. However there is need for a ground floor toilet for which drainage provision was not made before the foundation was completed.  

My question is this:

How can the drainage/soil pipe be inserted through the foundation to the manhole (located next to the foundation) without compromising the integrity/strength of the foundation?  

Any ideas will be most appreciated.