General guidance only — all construction work must be overseen by a supervising engineer This handbook is compiled from standards and laws with every source cited, andis being reviewed for certification by engineers Use it to know what to look at, what to ask and what evidence to request on site It is not an engineering determination and can't replace an engineer · Terms of use · Limitations of the handbook

Throughout construction

Lightning protection

Page code P37 · 47 inspection criteria · 3 illustrations

The law requires lightning protection only for high-rise buildings; houses aren't required — that is, from 23.00 metres up, which ordinary houses don't reach. What does exist, and which we have read ourselves, is DPT standard 4501-51 chapter 6, which specifies the size of every conduc…

This page contains
Who the law applies to — and the figures used for tall buildings
Why you must decide before the roof goes on
The three parts of the system, and the figures the standard gives for each
Joints, and other metals in the house that must be bonded to the system
Earthing, and the one document the standard explicitly calls for
What to write into the contract, and what to watch for when buying

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