Try > 100kg (220 lbs) assuming 1" slate, 3 piece for a 9' table. Two can do
it, three is better.
--Jim
Mark0
"Bob C" <remov...@btconnect.com> wrote in message
news:RP8K7.1214$JZ3.10835@NewsReader...
> ... three-piece 1" slate ... (44"x88")
> ... each weighed about 200 lbs.
"Generic" slate weighs 168 lbs. per cubic foot. Slate for a 44 x 88
table is probably about 48 x 92 overall (adding 2 inches under each
rail). For 1-inch slate that's 2.56 cubic feet, which would weigh 429
lbs. So each of the three pieces would weigh about 143 lbs. Not to
contradict you -- this is just a convenient place to get these numbers
out here.
Pat Johnson
Chicago
Pat, I was wondering about this, but your figure seems high to me. I have
never actually weighed slate, but I do design computer systems to weigh
truck loads of stone, and have weighed literally hundreds of thousands of
truck-loads of various types.
Your figure of 168 pounds per cubic foot works out to 4536 pounds per cubic
yard.
Now, from memory, gravel in this area weighs about 1 ton to 1.2 ton per
cubic yard, depending on packing. If you head into northern ontario, where
it is high in ore, it can get up close to 4-5 tons per cubic yard, but that
is granite with a high percentage of nickle ore in it. Dolemite Limestone
like you find in the Rochester area of the states weighs in the 2700 pounds
per cubic yard range, but I would think it quite a bit lighter than slate.
The high manganese limestone you get in central PA and upper Kentucky weighs
slightly more, in the 2850-3150 pounds per cubic yard range. Concrete weighs
from 2500 pounds per cubic yard to 3200, depending on the aggregate and the
aeration. I have never heard of unaerated concrete that weighs less than
2700 pounds per cubic yard, and never over 3500 pounds per cubic yard.
May I ask where that figure came from? I have a calculator that estimates
tonnages from measurements in any unit (how many tonnes of granular A to
fill a driveway 50 meters by 10 feet by 6 inches deep). It would be real
easy to use it for tables, if I had the actual density of the various types
of slate. I could revise it a bit, and give it to Ron for playpool.com.
Donald
> May I ask where that figure came from?
From a table of "Weights of Common Materials" built into my computer's
calculator:
Slate (solid) = 168 lbs / cu ft
Slate (broken) = 104 lbs / cu ft
Slate (pulverized) = 85 lbs / cu ft
Gravel (loose) = 95 lbs / cu ft (1 cu yard = 2,565 lbs = 1.28 tons)
Big difference between solid and pulverized (gravel).
It also has different weights for wet and dry materials (these are for
dry).
Pat Johnson
Chicago
How does Brazilian compare to Italian?
Otto
"Patrick Johnson" <nob...@home.now> wrote in message
news:3BFA6806...@home.now...
Yes, those figures look pretty reasonable, and agree fairly closely with
mine. To tell the truth, you are quite correct about the "broken" vs
"solid" weights. I have been thinking in terms of processed stone ...
seldom would you fill a truck with a single 12 cubic yard chunk. Call it a
brain fart. When the heck are you guys going to go metric, so I can think
without a calculator to translate <G>?
Donald.
My "Pocket Reference" by Thomas J. Glover says slate, solid 168 lb/cu-ft
4536 lb/cu-yd.
HTH
--
Frank G Richmond, Va.
Reply to frankglenn-at-spamcop-dot-net
Spam will be LARTED without so much as a by your leave.
The reply address in the header goes to the bit bucket, do not reply to
it
I just got new slate for my 9-foot table about 3 months ago. The
thickness was 30mm (~1&3/16"). THe shipping weight was 825 pounds.
That averages out to about 275# each, though the middle section did
seem heavier than the ends. And for those who think the weight might
have been fudged to get a lower shipping charge, that was what the
seller told me it actually was.
DRWilliams
rx4...@austin.rr.com
> ... THe shipping weight was 825 pounds.
This would be 214 lbs per cubic foot. I don't think there can be that
much variance in different varieties of slate.
pj
chgo
Donald
"Patrick Johnson" <nob...@home.now> wrote in message
news:3BFBB51E...@home.now...
Mark0
"DRWilliams" <rx4...@austin.rr.com> wrote in message
news:44imvtgjojm0n74ps...@4ax.com...
>"Mark0" <poola...@mail.com> wrote:
>We were comparing 1 inch slate--not 1 3/16 inch slate, Doc.
I know, but at least it provided some factual info as opposed to some
of the guesses that were offered. Using a little math, we could
extrapolate the weight of 1" slate to be somewhere around 695# for a
9-foot table.
DRWilliams
rx4...@austin.rr.com
Mark0
"DRWilliams" <rx4...@austin.rr.com> wrote in message
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