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imago

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As it's not related to commercial or industrial specifically I thought I'd ask in here.

The work being done is two facing external walls being removed and the offices being made into one by removing the gap between them. Blockwork construction with a steel frame, single storey. Oh and it's a primary school. The down conductor for the lightning protection runs down the face of one wall to an earth pit about 0.5m from the base of the wall.

When the wall comes down the choices(regs and recommendations aside for a moment) will be to either extend the conductor and dig in a new pit, or have the conductor and pit inside the new office. The second choice seems a bad one to me, but that's based on noting more than not liking the sound of the idea. I have no idea if it currently meets a standard, or indeed if the building requires LPS.

I won't be doing anything with the LPS as I don't have experience or knowledge with them. What I will need to do is provide some information as to what will need doing so that I can justify getting in a specialist. So what're the basics with this? Assuming it needs moving is there a particular sign off to be done for BS62305 is the LPS is worked on? Can it run internally? Will it need bonding to building structure elsewhere? Should it have an inspection periodically anyway?

Oh, and any recommendations for a company which does this sort of work in/near Birmingham?
 
As it's not related to commercial or industrial specifically I thought I'd ask in here.

The work being done is two facing external walls being removed and the offices being made into one by removing the gap between them. Blockwork construction with a steel frame, single storey. Oh and it's a primary school. The down conductor for the lightning protection runs down the face of one wall to an earth pit about 0.5m from the base of the wall.

When the wall comes down the choices(regs and recommendations aside for a moment) will be to either extend the conductor and dig in a new pit, or have the conductor and pit inside the new office. The second choice seems a bad one to me, but that's based on noting more than not liking the sound of the idea. I have no idea if it currently meets a standard, or indeed if the building requires LPS.

I won't be doing anything with the LPS as I don't have experience or knowledge with them. What I will need to do is provide some information as to what will need doing so that I can justify getting in a specialist. So what're the basics with this? Assuming it needs moving is there a particular sign off to be done for BS62305 is the LPS is worked on? Can it run internally? Will it need bonding to building structure elsewhere? Should it have an inspection periodically anyway?

Oh, and any recommendations for a company which does this sort of work in/near Birmingham?


Before anything else i say, i don't hold any grudges against you, or anyone else come to that, that i have a disagreement with, on any of the threads...

Basically the existing down conductor would need completely removing, and the air conductor on the roof modifying to suit the new external contours of the building. There should be a down conductor every 10m around the building each with a removable test point (depending on the connection to the earthing rods/electrodes used on the system) If the LP system hasn't been tested for some time, now would be a good time to bring in a specialist company to survey the existing system carry out any modification work and finally certify the installation. Ensure this LP system is bonded to the main incoming service MET....

As some have stated, internal down conductors is not the way to go here, but in certain circumstances internal steelwork, say in church bell towers and castle towers will need to be directly connected to the LP system internally. Also re-bar reinforcement and steel frames of buildings can be used in certain circumstances as down conductors, but i think i'm digressing away from your particular query now!! lol!!
 
Cheers gents, I've forwarded details of Omega and Furse to them. I've pointed out that there's a fair bit involved in this and that the first step should be a proper assessment, followed by qualified recommendations.
 

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