[Gasification] ..OT: Watch your snow load!

[doug.williams]

Hi Arnt and Colleagues,

For the moment, we only have sunlight or rain on our roof, so not sure how 
to measure that for loading. Although serious for those it affects, we 
managed to survive another year of non-gasification. I put it down to the 
inner glow of Christmas good cheer, and I have begun serious preparation for 
surviving the next few days of over eating and possibly imbibing to excess.
I will probably die of chocolate poisoning.

By a fluke of date line, I live in the future, compared to most of our forum 
members, and I'd like to reveal it's a great place and not scary at all. The 
power is still on, and I can still drive my car on available gasoline, so 
please strive to get to tomorrow, you will survive.

We all need a break, and Christmas is a good time to share some time with 
family and  friends, many of mine scattered across the World.

 I wish you all a enjoyable Festive Season, from us down here in New 
Zealand.

Doug Williams.


----- Original Message ----- 
From: "Arnt Karlsen" <arnt at c2i.net>
To: <Gasification at listserv.repp.org>
Sent: Saturday, December 23, 2006 9:03 AM
Subject: [Gasification] ..OT: Watch your snow load!


> Hi,
>
> ..I see reports on people stuck in snow in places like New
> Mexico.
> One thing is getting stuck in snow on the road, there
> you "just" need watch out for tail pipe gases killing you,
> you either wanna stop in some wind blown place, where the
> snow and tail pipe gases are blown away, or combine the
> snow and your car into an "igloo."
> And you don't want your "igloo" chewed up by some snow
> thrower.
> And you will need fresh air in your "igloo", or, the snow
> thrower won't matter. ;o)
>
> ..need water? Melt some snow.
>
> ..in some house, motel, or airport terminal etc building?
> Make sure the people owning or running etc the joint,
> understands the snow loads on the roof. Collapse risk.
>
> ..dry fresh snow is lightweight, and only of concern if
> the roof has not been designed to carry it. Weigh it.
>
> ..wet snow can easily approach a ton per cubic meter,
> that's one meter deep snow on one square meter or
> "one meter each way", or 35 cubic feet, as in "over
> 3 feet deep on 11 square feet."
>
> ..2 meters or 6 feet? If you're in a nuclear blast
> shelter, "no big deal," for any other kinda structure, you
> wanna check or remove the snow, or even evacuate people.
>
> ..snow load checks are easy, use a yard stick or somesuch
> and probe the depth, either "on the lawn" or on the roof,
> then put some snow in a box and weigh it, say on a bath
> room scale.
>
> ..divide that weight by the box volume, and you have the
> snow density, should be in the 0.15 to 1 metric tonne per
> cubic meter range or 9 thru 63lb per cubic feet. Multiply
> that by your roof size and your probed snow depth, and you
> have your snow load.
>
> ..e.g: 25kg/(44cm*12in*250mm)
> (25*kilogram)/(44*centimeter*(12*inch)*(250*millimeter))
> = approx. 745.64543(kg/m^3)
> <> convert lb/ft^3
> 745.64543(kg/m^3) = approx. 46.549124(lb/ft^3)
> <> 46.549124lb/ft^3*12m*8m*40in
> ((46.549124*pound)/(foot^3))*(12*meter)*(8*meter)*(40*inch)
> = approx. 160.33619klb
> <> convert ton
> 160.33619klb = approx. 72.727273t
>
> ..if you anywhere near doubt your roof can take
> those "extra" 73 tons, evacuate all the people under it,
> then remove those 73 tons of snow.
>
>
> -- 
> ..med vennlig hilsen = with Kind Regards from Arnt... ;o)
> ...with a number of polar bear hunters in his ancestry...
>  Scenarios always come in sets of three:
>  best case, worst case, and just in case.
>
>
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