27 May
2004
27 May
'04
7:02 p.m.
On May 27, 18:18, der Mouse wrote:
Eh? They're supported at the corners only. Some do have metal
cladding round the edges, but it's not very strong.
>> So I'd say that you should never use
particle board to carry
loads.
> Manufacturers of computer room raised floors will
disagree with
that
> -- all the high-load ones I've ever coma
across are made of
particle
> board (usually with a very thin metal cladding,
which is to protect
> against moisture and impacts, and to provide electrical
continuity).
Of course,
these are 35mm-45mm thick, not 15mm-18mm.
They also are supported around the whole edge of a two-foot-square
square. If those shelves were supported every two feet -
especially if
they used that kind of thickness - I bet they'd still be just fine.
>From an engineering perspective, I'd say that particleboard is fine
for
carrying loads in the right circumstances, but it is
incumbent upon
the
designer to know what those circumstances are and
design accordingly.
Agreed.
--
Pete Peter Turnbull
Network Manager
University of York
27 May
27 May
8:40 p.m.
[...] you
should never use particle board to carry loads.
Manufacturers of computer room
raised floors will disagree [...] 
10:42 p.m.
On Fri, 2004-05-28 at 08:40, der Mouse wrote:
I suppose the ones I am familiar with from the one job
I've worked at
that used them are atypical, then. They were supported by a network of
metal (steel, presumably) braces which in turn were supported by small
pillars to the floor where the braces met (which was under the corners
of the tiles).
I've worked in an office which had those too, so you're not alone. They
were very tight fitting too, and needed a couple of big suction-cups to
lift them up. They could take one hell of a weight though.
In my case the building probably dated from around 1980.
cheers
Jules
28 May
28 May
4:20 a.m.
I suppose the
[raised-floor tiles] I am familiar with from the one
job I've worked at that used them are atypical, then. They [...]
I've
worked in an office which had those too, so you're not alone.
They were very tight fitting too, and needed a couple of big
suction-cups to lift them up. They could take one hell of a weight
though. In my case the building probably dated from around
1980.
I just spoke with the admin there (my boss for about half the time I
was there), and he thinks the raised flooring in question went in in
the mid/late 1980s. He also says the same stuff is available today;
they just finished installing it (which really means having it
installed) in another room. But of course the tiles are overdesigned
to the point where they Just Don't Break, so once made they are kicking
around on the second-hand market approximately forever.
/~\ The ASCII der Mouse
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29 May
29 May
9:03 a.m.
We have them too where I work there is a space of about 18" below them where
we run all the cables .
They're not too tight -fitting but you need a double suction cup device to
lift them. Some of the tiles - in the posher areas- are top-lined with
carpet instead of lineoleum. Metal edges and supported on all four corners
by metal pillars.
Geoff.
----- Original Message -----
From: "Jules Richardson" <julesrichardsonuk(a)yahoo.co.uk>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk(a)classiccmp.org>
Sent: Friday, May 28, 2004 11:42 AM
Subject: Re: Pressed Particle Board Shelving Warning
On Fri, 2004-05-28 at 08:40, der Mouse wrote:
I suppose the ones I am familiar with from the
one job I've worked at
that used them are atypical, then. They were supported by a network of
metal (steel, presumably) braces which in turn were supported by small
pillars to the floor where the braces met (which was under the corners
of the tiles).
I've worked in an office which had those too, so you're not alone. They
were very tight fitting too, and needed a couple of big suction-cups to
lift them up. They could take one hell of a weight though.
In my case the building probably dated from around 1980.
cheers
Jules
10:58 a.m.
On Sat, May 29, 2004 at 03:41:50PM -0700, Ron Hudson wrote:
How do you lift the carpet covered ones? Hook velcro
on handles?
I've seen a tool that resembles the suction-cup lifter, but instead of
rubber cups, there are square plates with tiny metal hooks, rather like
velcro. You place the tool on the carpet and slide it in one direction
to snag the carpet, and slide it in the other direction to release it.
-ethan
--
Ethan Dicks, A-130-S Current South Pole Weather at 29-May-2004 22:50 Z
South Pole Station
PSC 468 Box 400 Temp -80.5 F (-62.5 C) Windchill -128.1 F (-88.90 C)
APO AP 96598 Wind 17.8 kts Grid 003 Barometer 665.3 mb (11184. ft)
Ethan.Dicks(a)amanda.spole.gov http://penguincentral.com/penguincentral.html
11 a.m.
Ethan Dicks wrote:
I've seen a tool that resembles the suction-cup
lifter, but instead of
rubber cups, there are square plates with tiny metal hooks, rather like
velcro. You place the tool on the carpet and slide it in one direction
to snag the carpet, and slide it in the other direction to release it.
-ethan
So what do they use for flooring in Antartica?
Ben.
11:30 a.m.
On Sat, May 29, 2004 at 05:00:18PM -0600, ben franchuk wrote:
So what do they use for flooring in Antartica?
We don't have an ounce of raised flooring in the old station, and I'm
not sure there is any in the new station - we tend to go with overhead
cable trays. There are three seperate runs in the room I'm in now,
and it's office-ish space, not even machine room.
There might be some metal-tile raised flooring in the NOC in McMurdo, but
I'm not certain of it.
If you mean ordinary flooring, the older buildings are modular, insulated
boxes with plywood floors and carpet. The new station is steel-frame
construction, sheathed in insulated plywood (18" foam, IIRC) for the
walls, and steel decking with either roll-vinyl covering where there's
water (laundry, galley, bathrooms, etc.) or carpet where it's dry. Dunno
what's between the carpet and the steel, but I'd guess plywood or particle
board.
-ethan
--
Ethan Dicks, A-130-S Current South Pole Weather at 29-May-2004 23:20 Z
South Pole Station
PSC 468 Box 400 Temp -80.8 F (-62.7 C) Windchill -129.4 F (-89.7 C)
APO AP 96598 Wind 18.7 kts Grid 002 Barometer 665.1 mb (11192. ft)
Ethan.Dicks(a)amanda.spole.gov http://penguincentral.com/penguincentral.html
30 May
30 May
7:11 a.m.
It's a tool, a lot like the ones that carpet fitters use to stretch a fitted
carpet, that has two sets of spikes protruding from the base. You grip the
carpet by hitting the tile at an angle with the tool . Surprisingly
effective. There is also a lever in the handle to put more tension in the
grip of the spikes. Haven't seen it in use for a while as there aren't any
carpet tiles with us. ( We're not posh enough , obviously.)
Geoff.
----- Original Message -----
From: "Ron Hudson" <ron.hudson(a)sbcglobal.net>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk(a)classiccmp.org>
Sent: Saturday, May 29, 2004 11:41 PM
Subject: Re: Pressed Particle Board Shelving Warning
On May 29, 2004, at 2:03 PM, Geoffrey Thomas wrote:
in the posher areas- are top-lined with
carpet instead of lineoleum. Metal edges and supported on all four
corners
by metal pillars.
'
How do you lift the carpet covered ones? Hook velcro on handles?
7828
days inactive
7830
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9 comments
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participants (7)
-
bfranchuk＠jetnet.ab.ca -
dickset＠amanda.spole.gov -
geoffreythomas＠onetel.net.uk -
julesrichardsonuk＠yahoo.co.uk -
mouse＠Rodents.Montreal.QC.CA -
pete＠dunnington.u-net.com -
ron.hudson＠sbcglobal.net