Fireproof cable supports, suspended ceilings & 521.10.202

AJJewsbury:

wallywombat:

It boils down to whether you think cables could end up dangling down to head height before the suspended ceiling itself collapsed.

Agreed - it's a bit like the argument about letting cables rest on the ceiling grid and whether the grid is capable of taking the weight. A small T&E at a few grams per metre isn't likely to be an issue, a bunch of several 50mm² 3-core armoureds might be a bit different.


Most of the suspended grids I've seen have been held up with steel wires from all-steel knock-in fixings in the concrete (or directly from the structural steelwork) so itself unlikely to be prone to premature collapse just to fire I would have thought.

   - Andy.

Dont think the cable could be dangling down BEFORE the ceiling collapses as it would just land on the ceiling grid. Unfortunately there are no steel wires as it is a narrow corridor, less than 1200mm so angle section down the length with 1200 cross tees between and 1200 x 600 tiles.

AJJewsbury:

wallywombat:

It boils down to whether you think cables could end up dangling down to head height before the suspended ceiling itself collapsed.

Agreed - it's a bit like the argument about letting cables rest on the ceiling grid and whether the grid is capable of taking the weight. A small T&E at a few grams per metre isn't likely to be an issue, a bunch of several 50mm² 3-core armoureds might be a bit different.


Most of the suspended grids I've seen have been held up with steel wires from all-steel knock-in fixings in the concrete (or directly from the structural steelwork) so itself unlikely to be prone to premature collapse just to fire I would have thought.

   - Andy.

Dont think the cable could be dangling down BEFORE the ceiling collapses as it would just land on the ceiling grid. Unfortunately there are no steel wires as it is a narrow corridor, less than 1200mm so angle section down the length with 1200 cross tees between and 1200 x 600 tiles.