3 Storey HMO fire alarm and emergency lighting.

[dlt27]

Any info would be greatly appreciated.
I have just rewired a HMO and have now been asked to do fire alarm and emergency lighting.
I have wired both when working for previous company, but always followed drawings and never had anything to do with design. I started it today and after a bit of thinking I didn't know if I should take it on or whether to pass it onto another company or at least try to get fire alarm company to commission it.
For fire alarm it has been specced that all beds need detectors and landings and also heat in kitchen. Also break glasses. I started to wire a conventional system with a zone for each floor and a break glass (1300mm AFFL) at top of each staircase and also one at each exit door on ground floor. I have put a sounder on wall (1800mm AFFL) on each floor and 2 on ground floor. I know I need 2 sounder circuits, but does that mean I will need 2 on each floor and 4 on ground floor to meet requirements?
For Emergency lights I have put key switch on each floor, exit box at each door exit, bulkhead in each stairwell, bulkhead in each corridor, bulkhead in lounge as part of exit route and also bulkhead by front door (do stairwell ones need legends stuck on them with down arrows and if so how much do the stickers affect lux levels?)
Basically I was hoping someone could give guidance on if I missed anything out. Also do you think I should try and get fire alarm company to come and have a look and commission. Thank you

 

[westward10]

Get professional help there is a lot more to designing and installing safety systems than hoping for the best, do you have the relevant British Standards.

 

[davesparks]

your emergency lighting design doesn't sound like it will comply with current requirements.
Have you done anything to assess the required levels of illumination, or have you just scattered the fittings around on a random basis?

 

[The Ghost]

Someone like Aico can assist, at the top of the page, with design and installation and also do courses. Why don't you get in touch with them.

 

[tazz]

Being a full grade A, Aico are not going to be much help. Suggest you work with a registered fire alarm company. They will be glad to design and commission leaving the cable install to yourself. This way certification, as fitted drawings, zone carts and full O & M can be submitted to BC.
Rule of thumb with EM lighting is to achieve 1 lux min along the centre of any escape route. Any change of direction or level will need to be enhanced with additional fittings, Along with extinguisher points, and high risk areas.