1st flats with concrete ceilings

[Bellendian]

Looking at a job first fixing flats with concrete ceillings, to be lined with mf ceilling system.
How do you guys support cables in this scenario? Just clip up to concrete, or some more elaborate solution? Tray seems kind of ott, but would be a good solution. Cheers

 

[Joshua]

17th Edition says you need to metal clip exit routes, 18th says everywhere.

 

[rapparee]

17th Edition says you need to metal clip exit routes, 18th says everywhere.

So crampets will be the job then

 

[Leesparkykent]

So crampets will be the job then

You would have a hard job banging crampets in to a reinforced concrete ceiling imo.

 

[Deleted member 26818]

How many layers of plasterboard are going up?
How about metal cable ties every third fixing?

 

[Big Man]

Sorry to invade this post. Just a variance on the above... same situation apart from the plasterboard ceiling is up plastered and painted in a relatively new apartment. Customer wants light switch moved to opposite side of room as it’s currently in a silly place. 6m across room assuming it directly opposite. What do other people do to meet regs in this situation? Metal fixings and a load of large holes cut out the ceiling? It makes for a great fixing for the entanglement/ premature collapse issue but kinda messed up the fire integrity of the plasterboard ceiling. Any thoughts gratefully received also.

 

[Big Man]

Sorry to invade this post. Just a variance on the above... same situation apart from the plasterboard ceiling is up plastered and painted in a relatively new apartment. Customer wants light switch moved to opposite side of room as it’s currently in a silly place. 6m across room assuming it directly opposite. What do other people do to meet regs in this situation? Metal fixings and a load of large holes cut out the ceiling? It makes for a great fixing for the entanglement/ premature collapse issue but kinda messed up the fire integrity of the plasterboard ceiling. Any thoughts gratefully received also.

 

[loz2754]

Quinetic switch

 

[Deleted account]

Linian clips. Brilliant invension.

 

[Big Man]

Quinetic switch

Thanks for the prompt reply. That was one thought. Customer wants original 3 gang switch removed and plastered over also dimmers in new position. So a cable run will be required. Historically people would have just pulled the cables through but with the premature collapse issue I just wondered what other people were doing in similar situations.

 

[Big Man]

Linian clips. Brilliant invension.

I agree they are. My problem/issue is the multiple number and size of the multiple holes. It’s a big hole needed to fit an sds drill/hand/hammer into the void to drill the reinforced concrete. Bearing in mind it’s a 6m run that’s a lot of holes in their new ceiling. ?

 

[Deleted account]

I agree they are. My problem/issue is the multiple number and size of the multiple holes. It’s a big hole needed to fit an sds drill/hand/hammer into the void to drill the reinforced concrete. Bearing in mind it’s a 6m run that’s a lot of holes in their new ceiling. ?

Large linian clip. The bigger SWA ones can fit several smaller twin and earth cables in one loop. Run them along in one go.

 

[ipf]

Used these many a time in the past but I don't know where you can get them these days. We knew them as Obos (obows, oboes?).
One fix, as can be seen, and an open/close clip....about 75x40mm. great for small bunches of cables above ceilings. I think they do some metal type's too.

 

[pirate]

Big fan of Linian clips here. They have just introduced clips for fibre cables too.
Drill a hole, tap them in...job done. 1.5 and 2.5mm are so easy and fast to use, and the bigger sizes do SWA and conduit.

 

[Mike Johnson]

Is it a structural ceiling, what cover is on the reinforcement, do you have enough information to ensure you are not compromising the structural integrity of the floor above?

Do you know if the concrete ceiling is a pre-stressed member, or a post drawn area of a main structural element of the building, do you have the structural engineers drawings?

Any fixings in a regular pattern is like putting in a zip for a stress fracture to form, do you really think you are competent to make these structural decisions without taking into account the introduction of a path for moisture/condensation directly to the reinforcement.

 

[telectrix]

Is it a structural ceiling, what cover is on the reinforcement, do you have enough information to ensure you are not compromising the structural integrity of the floor above?

Do you know if the concrete ceiling is a pre-stressed member, or a post drawn area of a main structural element of the building, do you have the structural engineers drawings?

Any fixings in a regular pattern is like putting in a zip for a stress fracture to form, do you really think you are competent to make these structural decisions without taking into account the introduction of a path for moisture/condensation directly to the reinforcement.

would gorilla tape compromise the structural integrity, glue dissolving the concrete? ?