Re: tier 4 datacenter requirement "translation"

[Andrew Latham <lathama () gmail com>]

I would have to go check for sure but I believe it applies to screws or
bolts that could pierce the membrane. A well sealed roof is all they
are looking for.

On Fri, Sep 14, 2018 at 10:03 AM Valeriu Vraciu <valeriu () roedu net> wrote:

> Hello,
>
>
> It may be somehow offtopic, but maybe someone can help understand the
> meaning of a requirement for Tier 4 DC.
>
> We have a project to build a Tier 4 datacenter. One of the requirements
> specified in TIA942 and related to roof of the building sounds like this:
>
> "double redundant with concrete deck (no mechanically attached systems)"
>
> For my understanding (being not a native English speaker) what exactly
> does this mean ?
> 1. no mechanically attached to the roof systems (gear, equipment) like
> air-conditioning, generators etc.
>
> or
>
> 2. the roof (double) is made from components that are not mechanically
> attached with bolts and such.
>
>
> Thanks in advance.
>
>
> --
> Valeriu Vraciu
> RoEduNet

-- 
- Andrew "lathama" Latham -