Block and Beam - Fitting to an existing Wall

[heating12numpty12]

Hi

I looking into the ways to support a concrete block and beam floor. So I have an extension which has new footings and below dpc block work installed. The plan is to do a block and beam floor from an existing house wall to the new wall/footings.

Is it an acceptable practice to cut slots into the existing building outside wall and slide each of the beams into these slot?

I did search the internet but didn't find any info on way this should be completed.

Any pictures of the approved way would be appreciated.

Thank you.

 

[^woody^]

Yes you can do that. You cut a hole put the beam in and the make the hole good. No need for pictures.

You will need a DPC around the beams in the wall, in the same fashion as on a new wall.

 

[heating12numpty12]

Woody

Thank you for the reply.

Re your comment "You will need a DPC around the beams in the wall, in the same fashion as on a new wall". I can't quite get my head around that. I understand that in the new wall the beams will sit on a continuous DPC, but cant see how that will happen in the existing wall that the beams are going to be slotted into. Thank you for a little more info.

 

[tomfe]

If the beams are going in above your existing dpc then paint the ends of your beams with a liquid DPM like a trowel mastic.

 

[heating12numpty12]

Hi

The beams will be fitted below the existing house DPC. What should the action be then in the case?

 

[tomfe]

Sorry I ment if they are below.
If they are above then no need for any dpc