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Good Afternoon all. Im interesting in understand if mesh reinforcement (in this case A393) can be laced together using straight bar, tied with an appropriate lengths across each section of mesh (ie each mesh mat placed next to each other and then laced/spliced at each 200mm bar position to join...

Found it - Tension Clasp apparently - who knew ;)...

Hi - I have 2 little grab type clamps underneath my dinning room table that are used to pull the two sections together - or be release when the extension piece is to be put in the middle. Does anyone know what these little clamps are called - would like to buy a couple for a project im doing...

Hello All My extension for several reasons will be a timber frame sat on top of a masonry/concrete ground floor. The timber frame upper wall will be clad with oak T&G run vertically so the build up will be: 140 Timber Frame Breather Membrane 19mm batten 19mm counter batten 19mm T&G Oak...

Hi All Opening an old thread I know but have a very similar issue I'm trying to solve. I have a supporting wall (stud) I plan to move. This wall currently carries one end of 150mm deep flat roof joists that are currently 2650mm in length (clear span). By moving the wall I will need to...

Agree Random & noseall, good bit of taping to the PIR will also be prudent for a belt and braces approach. D

Quite comfortable I understand what the VCL is for. Question wasn't really about an individual component and its purpose, rather whether the movement of one element within a 'system' would create any other issues. A modern wall has obvious performance criteria to meet but also needs to provide...

Hi All Designing a wall type for an extension im doing, currently build up looks like this: Outside to In Oak Cladding (laid vertical) Timber Battens (50mm) (25mm vert, 25mm horz) Breather Membrane 9mm OSB 140 Stud filled with wool insulation 50mm PIR 25mm batten (and services void) 12.5mm...

Hi All Just about to repair a small section of a roof that when measured will need double size tiles (600x600) cut down to a standard tile and a half size (450x600) so they finish in line with the end of the house and the other tiles. My question is, is it ok to leave an exposed cut edge of the...

Good Evening All I am currently designing the roof structure of an extension I'm starting. The extension will be a timber frame (140mmx38mm panels stick built). The roof structure will be an oak rafter/purlin construction that will be left exposed under a warm roof. Two bedrooms side by side...

Its a TN-S system

This is what i am not sure - at the moment the feeds to both RCDs from the main switch take up quite a lot of space. Could it be as simple as running additional cables (1 live 1 neutral) from main switch to new RCBO - there is space on the unit - i have a 10 way unit and am only using 8 of...

John D - while i know of many builders/plumbers/sparky's like this - this guy is a dear old friend of mine - an old stick who does a good job because that's all he knows and wants to do. We did the design late at night at his house 2 days before he was due to leave - my fault for leaving it...

I thought it was a requirement that fire alarms had their own dedicated circuit not protected by RCD. "The circuit supplying the fire alarm system should not be protected by an RCD unless this is necessary to comply with the requirements of BS 7671. Where an RCD is necessary for electrical...

By trade i'm a Civil Engineer with over 10 years in the game. I am often asked by people for my expertise and advice (from friends, family, collegues and other Civils folk - outside my normal working requirements/responsibilities). My answer is never i can't answer that you must speak to...

I don't want to do these works - i just want to have all the kit for when he comes back.

I am about to have my house rewired to 17th edition and have bought a dual RCB consumer unit. The feeds for the 2 RCDs from the main switch are already in place (bought with RCDs and MCBs all in). I have read that the fire alarms should be on an independant circuit and not protected by an...