Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 5 replies
  • Subscribers 38 subscribers
  • Views 3025 views
  • Users 0 members are here
Options
You may also be interested in
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

BS 7671 - Regulation 422.2

Rob McConnell
I have a small problem that I would like to have some clarification on.
In principle  Regulation 422.2 requires that:
Cables or other electrical equipment shall not be installed in a protected escape route unless part of:
(i) an essential fire safety or related safety system
(ii) general needs lighting
(iii) socket-outlets provided for cleaning or maintenance.
I am currently designing an all electric building that consists of four storeys and has four escape stairs. one at each corner. The escape stairs are linked by corridors which form part of the designated escape routes.
The mechanical designer wants to heat the corridors and stairwells with electric panel heaters, but I have said this will not comply with Regulation 422.2, however the mechanical designer has said that heating has to be installed in these areas in order to comply with the Building Regulations.
I have spoken to other engineers and an NICEIC Inspector regarding this issue and we cannot come up with a definitive answer, and would value your opinion if possible
Parents
  • 0

    Protected escape routes can be carpeted and often are. Generally, corridors serving hotel bedrooms will be required to be protected and they are often fitted with plush carpets. 
    You don’t say what your stairs are serving but I suspect at 4 storeys they will be protected stairs. As Simon has indicated, it would be prudent to consult the BC plans, fire risk assessor, architect or like to establish requirements. 
    I am not sure what the intention is with respect to this group of regulations. I understand it had more to do with minimising fire load rather than concerns about ignition sources. If you don’t have the former, the latter is irrelevant. So providing the cabling is properly protected, I can’t see the problem from a fire safety perspective albeit not meeting the wording of the regs.


Reply
  • 0

    Protected escape routes can be carpeted and often are. Generally, corridors serving hotel bedrooms will be required to be protected and they are often fitted with plush carpets. 
    You don’t say what your stairs are serving but I suspect at 4 storeys they will be protected stairs. As Simon has indicated, it would be prudent to consult the BC plans, fire risk assessor, architect or like to establish requirements. 
    I am not sure what the intention is with respect to this group of regulations. I understand it had more to do with minimising fire load rather than concerns about ignition sources. If you don’t have the former, the latter is irrelevant. So providing the cabling is properly protected, I can’t see the problem from a fire safety perspective albeit not meeting the wording of the regs.


Children
No Data

Community Rules & Guidelines