Class 2 & 3 - now with sprinklers per NCC2019

Discussion in 'Development' started by Aaron Sice, 19th Oct, 2019.

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  1. Aaron Sice

    Aaron Sice Well-Known Member

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    Yep. Read it and weep. All Class 2 and 3 buildings up to 4 storeys and not exceeding 25m effective height.

    If you have a timber framed floor with a cavity greater than 200mm you'll need sprinklers in your ceiling-to-floor cavity if the space is over 3sqm. Oh and if your ceiling isn't strong enough for all that water, reinforce it.

    If you have a lift shaft, you'll need one in there too.

    One or two points can rely on the mains with a DN20 line (pretty standard now). Whole of building needs a minimum 25kl tank with an onsite hydrant / booster.

    FIPs are about to get an upgrade too on the back of this.

    I'm a bit crosseyed after the reading but it also appears you'll need one over your cooking rangehood / extractor, before any ducting.

    Exempted areas are listed, includes non-combustible ceiling cavities (slab and rondo ceiling systems).

    Can read all about it at Table E1.5 (Volume 1) or AS2118.4.

    'night y'all.
     
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  2. Scott No Mates

    Scott No Mates Well-Known Member

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    I'm a little bit dubious about this one, water on gas/electrical/oil fires aren't the best mix.

    They don't do it in restaurants, why in residential?

    I'll need to have a read.
     
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  3. Aaron Sice

    Aaron Sice Well-Known Member

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    Yeah I thought it was odd but I don't think it's above the cooktop, but in the ceiling above the cooktop. So once the fire has started, it is compartment isolated.