Careful planning is essential when arranging a partition — this extends to working out cable and pipe runs and installing them as you build.
The time to put either cables or pipes into a stud partition is when the framework is finished.
Whenever installing cables or pipes in any kind of wall, remember that they must always run vertically or horizontally directly to or from each fitting.
To run cable through the framework of a stud partition, bore a 3/4in hole through either the head plate or sole plate into the ceiling or floor void as appropriate and, depending on the direction from which the cable is to come, drill similar holes through the centers of any bracing that cross the cable route.
Feed in the cable, leaving plenty of excess. Cut a hole in the drywall for the fitting and feed the end of the cable through this as you fit the drywall in place.
Working in the same way, make sure the holes you drill through the framework are larger than the diameter of the pipe. This will make maneuvering them into place easier and allow them to expand and contract as the temperature fluctuates. Keep the number of joints inside the partition to the bare minimum and make sure you test any plumbing system before you finish the cladding; if there is a leaking joint you will be able to rectify it. If the pipes are to drop down from the ceiling you could remove a floorboard in the room above and feed them down through the partition from there.
Alternatively, pipes can be clipped into notches cut in the edges of the bracing and studs. Using a back saw and bevel- edge chisel, cut notches wide enough to accept a pipe clip of the right size and deep enough so that the pipe does not touch the drywall cladding.
Electrical cables can be run across the surface of the blocks in pipes and held in place with clips.
For pipes, use a hammer and bricklayer’s chisel to cut out a channel across the face of the blocks, making it wide enough to accept the appropriate size of pipe clip and deep enough so that the pipe will be flush with the surface.
Should you want to bury a hot water pipe, it is best to run it through another pipe of the next size up, which will act as a sleeve and allow for expansion.