The floor joists are around 4 inches in height from the lower ceiling to the floor upstairs and around an inch thick.
I am replacing some old 28mm copper with this new 1/4 inch stuff to have a good bath/shower empty arrangement. However I am not able to use the existing grooves that have been noticed out at the top of the beam because it causes backflow. By this I mean not enough gradient in the right direction on a 1.5meter span.
So back to my original topic question. I am thinking about cutting a hole in the center of the beam to accomodate the pipe. This will be quite close to the existing notch.
Is this safe ?
Any alternative for negative flow direction otherwise ?
PS: This is all in an effort to have the waste pipes hidden and NOT on display
I am replacing some old 28mm copper with this new 1/4 inch stuff to have a good bath/shower empty arrangement. However I am not able to use the existing grooves that have been noticed out at the top of the beam because it causes backflow. By this I mean not enough gradient in the right direction on a 1.5meter span.
So back to my original topic question. I am thinking about cutting a hole in the center of the beam to accomodate the pipe. This will be quite close to the existing notch.
Is this safe ?
Any alternative for negative flow direction otherwise ?
PS: This is all in an effort to have the waste pipes hidden and NOT on display