Hi Folks,
I would like to make a hole through my joist for a small pipe.
I've reviews the building regulations on the location of notches and holes, but I'm confused about how tall my joists are, so don't know where the middle of the joist is.
The sit on metal plates on top of the breeze block of the cavity wall but the bottom 7cm(out of 18cm) of the joist has been notched to fit the breeze block. All the joists are like this.
has this reduced the effective height of the joist to the top 12cm?
Is it normal to do this to joists? Is it a problem?
So where do I drill my hole, in the middle of the joist at 9cm or in the middle of top section at 6cm from the top?
I've attached a diagram and a photo of the notched ends.
The hole I need to drill, is under the bath, so I don't what to weaken the joist further if this end notching is a problem.
Thanks.
I would like to make a hole through my joist for a small pipe.
I've reviews the building regulations on the location of notches and holes, but I'm confused about how tall my joists are, so don't know where the middle of the joist is.
The sit on metal plates on top of the breeze block of the cavity wall but the bottom 7cm(out of 18cm) of the joist has been notched to fit the breeze block. All the joists are like this.
has this reduced the effective height of the joist to the top 12cm?
Is it normal to do this to joists? Is it a problem?
So where do I drill my hole, in the middle of the joist at 9cm or in the middle of top section at 6cm from the top?
I've attached a diagram and a photo of the notched ends.
The hole I need to drill, is under the bath, so I don't what to weaken the joist further if this end notching is a problem.
Thanks.