2 Jan
2014
2 Jan
'14
7:33 p.m.
Yes, I thought about the weight of people, also I am pretty sure fully
loaded bookcases are not exactly light either. I will buy myself a nice
sheet of thick plywood to put it on just to spread the load.
Thanks
Rob
-----Original Message-----
From: cctalk-bounces at classiccmp.org [mailto:cctalk-
bounces at classiccmp.org] On Behalf Of Doug Jackson
Sent: 02 January 2014 21:38
To: cctalk at classiccmp.org
Subject: Re: Keeping a Heavy Machine on a Domestic Suspended Floor (UK)
Hi Robert
Great score!
My math may be rusty, but.....
Remember, two people giving each other a hug, can comfortably put 200Kg
into a small area..... I keep this in mind when I see the sign at work
that
indicates that the maximum floor loading is
400Kg/m2.... Two people put
200Kg across their foot area, (about 0.12m2) = Which I suspect works out
as
about 1666kg/m2!
Using the same maths, a lady wearing stilettos can easily drop 50Kg over
1cm2 - that is 500,000Kg/m2 - That probably explains the 'poc' marks on
wooden floors I see!
A normal timber floor will comfortably hold a couple of hundred kg spread
over the area of a 19" rack, keep in mind that your rack has feet, so just
place
some 19mm board under the feet to distribute the
load.
Doug
On 3/01/2014 7:17 AM, Zane Healy wrote:
boards
I don't know what it can bare, BUT, I'd
be inclined to recommend
distributing the load. Get some long boards, and put
under it with the running the opposite direction of the beams under the
floor.
--
Doug Jackson
Dougs Word Clocks.com Pty Ltd
www.dougswordclocks.com
Zane
On Jan 2, 2014, at 12:10 PM, "Robert Jarratt"
<robert.jarratt at
ntlworld.com> wrote:
> I recently bought a lovely PDP11/45 in a H960 rack, with the CPU, a
> Unibus Expansion box and an RK05 drive. I am guessing the whole thing
> must weigh at least 100Kg, possibly 150Kg or even more (my worst case
estimate
is 200Kg).
I am concerned whether the floor of the upstairs room where I now
have it can bear the weight. I have placed it right next to a load
bearing wall to ease the strain on the joists. Can anyone tell me
what sort of weight a normal UK upstairs floor can bear? If my
guessed weight is anything close to the limit I will weigh parts of
the machine to get a more accurate idea of the actual weight.
Thanks
Rob