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It has been several weeks but I will be installing my new shower in the next fews days :D. Instead of teeing off the HWC I got myself an essex flange as it seems a better option & it will make a possible upgrade to a dedicated pump at some later date simpler. Can speedfit pipe be...

Yes, that's correct all three joists begin under a stud wall behind which is an airing cupboard and pass across the corridor/hallway underneath a second stud wall into an adjacent room. Inside that room there is nothing of weight on top of any of them. except the rug :D [Inside the airing...

Ok, I understand. The weakened joist is on the corridor/landing there is not, nor is there going to be, anything of any weight resting on the weakened joist or the two joists on either side of it.

The joist centres are at 16 inches. I am not exactly sure what you mean by Apart from people walking over them on their way to the bathroom. There is nothing currently being supported by the weakened joist or the previous and next joists. They start on the corridor and pass into an...

No, I tried to trace the ends of the wires but they go to far into/under other rooms. :cry: There doesn't seem to be a way to get a single piece of wood into the gap without cutting it to accommodate the wires. Unless you know of a trick or two???

The maximum size of wood I can get in without any notching and ignoring the holes is 5". You can't see it in the picture but there is a 2" length of wood which runs at right angles to the base of the joist and the pipes sit in a 1" notch at the top of the joist.

Gladly! :D

awbcm, you recommend drilling over renotching the joist. I realise that this is probably gonna be yet another simple question but... If I drill I would use a 32mm drillbit, and would be drilling a hole through the centre line of the joist i.e. directly underneath the 2in notch I have just...

I do recognise that this isn't rocket science but honestly where is the sense in making assumptions & steaming ahead with what I THINK is a really good idea or dismissing what I THINK is definately a stupid idea when I can take 5mins to search on DIY forums and if that fails 1min to ask a...

Thank you I really appreciate it. :D By the way what size pilot hole do you make for an M10 coach bolt and is there a special tool for making a square countersink for the bolt head???

Tried to send Big-all a message but was told he is only accepting messages from friends.

Also, the place where I notched too deeply into the joist is exactly where I need the pipes to pass through it, once I have reinforced the joist is it better to notch again over the reinforced notch (making sure not to notch too deeply this time) or to drill through the centre of the joist...

Hi, I bought some 18mm OSB and these M10 x 130mm coach bolts (Threaded only at the end) from toolstation to use attach the OSB to the joist The packaging doesn't say what size pilot hole I should make can anybody help? Also the guide I have been directed to doesn't specify them but...

Ok, I see so what is a good distance for dimension X then?

Thanks this is a really useful guide. :D In the side view is the graphic saying to add a bolt every 100mm.

Thank you Moderator and sorry for the inconvenience :( :oops:

Thanks for replying Deluks and so quickly too... I have been looking at bolts. These will be long enough to sandwich the joist beween the timber braces. Would they be alright? http://www.screwfix.com/prods/21613/Bolts/Coach-Bolts/Threaded-Coach-Bolts-BZP-M12-x-180mm-Pack-of-10# How many...

Hi, I am in the process of installing a new shower and while creating the run for the pipework was incorrectly advised by a friend that I could cut a 2" notch into the top of a 2x8" joist. After accidently coming across other posts on this site I now realise that the maximum notch...

Hi, I am in the process of installing a new shower and while creating the run for the pipework was incorrectly advised by a friend that I could cut a 2" notch into the top of a 2x8" joist. After accidently coming across other posts on this site I now realise that the maximum notch...