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restoring a DC9 restroom... at home



 
 
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  #11  
Old July 7th 05, 01:35 AM
Edgar
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"RST Engineering" wrote in message
...
In California we never worried about it. The next earthquake would always
level them out.


:-Q LOL

You're right- a little 'shake and bake' will keep them leveled out.

Ha, Ha,


Ads
  #12  
Old July 7th 05, 01:54 AM
Matt Whiting
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RST Engineering wrote:
A 15" medicine cabinet was designed to fit between standard 2x4 studs on 16"
centers. The blades dropped into the inter-wall space created by those
2x4s. A quick calculation for a medicine cabinet at 5' high, 15" wide, 3.5"
deep shows a space of some 3150 cubic inches. Assuming the blades were
about 1" x 2" x 0.005, this gives a blade volume of.01 cubic inches. You
could drop 315,000 blades into the slot before the space filled up. If you
changed blades every other day, you had a little over 1700 years of
capacity.


And if all blades fell into a perfectly dense pack configuration.
However, even in the real world it would still take a long time to fill
the cavity. However, I feel sorry for the guy that demolishes the place
and has to clean up that mess of blades ... hopefully, he has a strong
magnet handy!


Matt
  #13  
Old July 7th 05, 02:18 AM
Morgans
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wrote in message
oups.com...
I want use my home workshop to rebuild an old, junked restroom from a
USAF DC9.

The milspec drawings show a slot for "used razor blades".

How often am I supposed to clean out the used razor blades to maintain
airworthiness specs?


Not until a total airframe overhaul. As Jim said, there is plenty of room
for LOTS of blades.

Don't forget to update your weight and ballance, on every flight, for the
added razor blade weights! g
--
Jim in NC

  #14  
Old July 7th 05, 02:51 AM
UltraJohn
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RST Engineering wrote:

A 15" medicine cabinet was designed to fit between standard 2x4 studs on
16"
centers. The blades dropped into the inter-wall space created by those
2x4s. A quick calculation for a medicine cabinet at 5' high, 15" wide,
3.5"
deep shows a space of some 3150 cubic inches. Assuming the blades were
about 1" x 2" x 0.005, this gives a blade volume of.01 cubic inches. You
could drop 315,000 blades into the slot before the space filled up. If
you changed blades every other day, you had a little over 1700 years of
capacity.

Jim



Alas only if they fell neatly into place!
John

  #15  
Old July 7th 05, 12:39 PM
The Raven
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"RST Engineering" wrote in message
...
A 15" medicine cabinet was designed to fit between standard 2x4 studs on
16" centers. The blades dropped into the inter-wall space created by those
2x4s. A quick calculation for a medicine cabinet at 5' high, 15" wide,
3.5" deep shows a space of some 3150 cubic inches. Assuming the blades
were about 1" x 2" x 0.005, this gives a blade volume of.01 cubic inches.
You could drop 315,000 blades into the slot before the space filled up. If
you changed blades every other day, you had a little over 1700 years of
capacity.


Good explanation but you forgot to factor in corrosion of those blades. By
the time you reach 1700 years, the first 1200 years of blades would have
corroded to almost nothing. This would give at least another 500-600 worth
of storage. You can calculate out the rest....


--
The Raven
http://www.80scartoons.co.uk/batfinkquote.mp3
** Now I will bring chaos to the world!


  #16  
Old July 7th 05, 01:05 PM
Chuck Harris
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The Raven wrote:
"RST Engineering" wrote in message
...

A 15" medicine cabinet was designed to fit between standard 2x4 studs on
16" centers. The blades dropped into the inter-wall space created by those
2x4s. A quick calculation for a medicine cabinet at 5' high, 15" wide,
3.5" deep shows a space of some 3150 cubic inches. Assuming the blades
were about 1" x 2" x 0.005, this gives a blade volume of.01 cubic inches.
You could drop 315,000 blades into the slot before the space filled up. If
you changed blades every other day, you had a little over 1700 years of
capacity.



Good explanation but you forgot to factor in corrosion of those blades. By
the time you reach 1700 years, the first 1200 years of blades would have
corroded to almost nothing. This would give at least another 500-600 worth
of storage. You can calculate out the rest....


Back in the days of carbon steel razor blades, corrosion would reduce the
blades to dust (dust that takes up more room than the uncorroded blade
itself, BTW).

But today's double edged safety razor blade is made from a form of stainless steel, and
doesn't rust.

-Chuck
  #17  
Old July 7th 05, 01:51 PM
Montblack
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("Chuck Harris" wrote)
Back in the days of carbon steel razor blades, corrosion would reduce the
blades to dust (dust that takes up more room than the uncorroded blade
itself, BTW).

But today's double edged safety razor blade is made from a form of
stainless steel, and
doesn't rust.



Have you factored in wall critters making off with some of the blades?
Little mouse blacksmiths working into the the night pounding out swords,
armor, spears...

Ben (1972) meets Braveheart (1995).
"Where 'WILLARD' ended... Ben begins. And this time, he's not alone!"


Montblack
Hope Puss 'n Boots is up to the challenge.

  #18  
Old July 7th 05, 11:15 PM
Matt Whiting
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The Raven wrote:

"RST Engineering" wrote in message
...

A 15" medicine cabinet was designed to fit between standard 2x4 studs on
16" centers. The blades dropped into the inter-wall space created by those
2x4s. A quick calculation for a medicine cabinet at 5' high, 15" wide,
3.5" deep shows a space of some 3150 cubic inches. Assuming the blades
were about 1" x 2" x 0.005, this gives a blade volume of.01 cubic inches.
You could drop 315,000 blades into the slot before the space filled up. If
you changed blades every other day, you had a little over 1700 years of
capacity.



Good explanation but you forgot to factor in corrosion of those blades. By
the time you reach 1700 years, the first 1200 years of blades would have
corroded to almost nothing. This would give at least another 500-600 worth
of storage. You can calculate out the rest....



Except that iron oxide takes up even more space than the iron ....


Matt
  #19  
Old July 8th 05, 08:14 AM
Derek Lyons
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"The Raven" wrote:

Good explanation but you forgot to factor in corrosion of those blades. By
the time you reach 1700 years, the first 1200 years of blades would have
corroded to almost nothing. This would give at least another 500-600 worth
of storage.


Umm.. I don't think so. Inside the wall (as opposed to exposed to
the elements) there is nothing carrying the corroded material away.
It doesn't simply evaporate.

D.
--
Touch-twice life. Eat. Drink. Laugh.

-Resolved: To be more temperate in my postings.
Oct 5th, 2004 JDL
  #20  
Old July 8th 05, 08:15 AM
Frank van der Hulst
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Matt Whiting wrote:

Good explanation but you forgot to factor in corrosion of those
blades. By the time you reach 1700 years, the first 1200 years of
blades would have corroded to almost nothing. This would give at least
another 500-600 worth of storage. You can calculate out the rest....


Except that iron oxide takes up even more space than the iron ....


OMG... there may only be 1000 years of capacity. Time for an emergency AD!
 




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