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Why do all flights of stairs have 13 steps

Anonymous Coward
User ID: 27244947
United Kingdom
11/10/2012 09:16 AM
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Why do all flights of stairs have 13 steps
My OCD is counting. Steps.

Nearly every staircase is multiples of 13 steps.

Coincidence?
1908247

User ID: 27440042
Brazil
11/10/2012 09:23 AM
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Re: Why do all flights of stairs have 13 steps

Nus
Waterbug

User ID: 1295673
United States
11/10/2012 09:35 AM
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Re: Why do all flights of stairs have 13 steps
Wall height is 8 feet.
When cutting the stringers for a staircase, there are codes that must be followed.
Here, it is a rise of no more than 7.75 per step.

The variable between the rise of the first step and the last can be no more than 3/8 inch.
Usually the general rule is 7.5 rise by 10 inch run.
Depends on the floor finish.

Do the math.
05h20

User ID: 24534482
United States
11/10/2012 09:36 AM
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Re: Why do all flights of stairs have 13 steps
Wall height is 8 feet.
When cutting the stringers for a staircase, there are codes that must be followed.
Here, it is a rise of no more than 7.75 per step.

The variable between the rise of the first step and the last can be no more than 3/8 inch.
Usually the general rule is 7.5 rise by 10 inch run.
Depends on the floor finish.

Do the math.
Quoting: Waterbug

Damn beat me to it...Nothing to see here move along
05h20 All but nine
Anonymous Coward
User ID: 11223885
Netherlands
11/10/2012 09:38 AM
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Re: Why do all flights of stairs have 13 steps
It are gees planes .. But eh its terrible.
Anonymous Coward
User ID: 11223885
Netherlands
11/10/2012 09:39 AM
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Re: Why do all flights of stairs have 13 steps
Specialy when they cant let go to have it like that for ever.
Anonymous Coward
User ID: 27421010
Ireland
11/10/2012 09:40 AM
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Re: Why do all flights of stairs have 13 steps
For bad luck so as many people fall down them. It's a conspiracy I tells ya.
Sparrow and Medicine

User ID: 27437341
United Kingdom
11/10/2012 09:40 AM
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Re: Why do all flights of stairs have 13 steps
Coincidence.
"What happened to the legendary Chris Redfield, huh? What happened to you!?"
Anonymous Coward
User ID: 15215384
United States
11/10/2012 09:40 AM
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Re: Why do all flights of stairs have 13 steps
Its the illuminati!!!!

......erm sorry i couldnt resist.

...ok move along.
simple as that
User ID: 11223885
Netherlands
11/10/2012 09:40 AM
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Re: Why do all flights of stairs have 13 steps
That means that the overview owner is sick and must be disposed.
Waterbug

User ID: 1295673
United States
11/10/2012 09:42 AM
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Re: Why do all flights of stairs have 13 steps
Wall height is 8 feet.
When cutting the stringers for a staircase, there are codes that must be followed.
Here, it is a rise of no more than 7.75 per step.

The variable between the rise of the first step and the last can be no more than 3/8 inch.
Usually the general rule is 7.5 rise by 10 inch run.
Depends on the floor finish.

Do the math.
Quoting: Waterbug

Damn beat me to it...Nothing to see here move along
Quoting: 05h20

There are exceptions..
Such as the builder excavating and pouring slab for a half-basement to 11 feet instead of 10.
Then demanding a landing and a turn in the wrong place...

Grrr.
Anonymous Coward
User ID: 27057831
United States
11/10/2012 09:43 AM
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Re: Why do all flights of stairs have 13 steps
13, is a sacred number, we have been lied into beleiving it is an evil bad number.
Anonymous Coward
User ID: 27432696
United States
11/10/2012 09:47 AM
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Re: Why do all flights of stairs have 13 steps
Wall height is 8 feet.
When cutting the stringers for a staircase, there are codes that must be followed.
Here, it is a rise of no more than 7.75 per step.

The variable between the rise of the first step and the last can be no more than 3/8 inch.
Usually the general rule is 7.5 rise by 10 inch run.
Depends on the floor finish.

Do the math.
Quoting: Waterbug

What the hell is wrong with you? This is GLP, you are not suppose to post logical factual answers! jeez. Panic killer!

Bluebird

User ID: 730536
United States
11/10/2012 10:00 AM
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Re: Why do all flights of stairs have 13 steps
Mine has 17. But I don't have 8 ft ceiling, it's higher but I don't know the height.
One of the most important aspects of conspiracy theories is being able to discern when there isn't one.

Oh yeah, like you'd understand anyway.

Where are we going and why am I in this handbasket?. . .J. Handy
Mordier L'eft

User ID: 27419590
11/10/2012 10:01 AM
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Re: Why do all flights of stairs have 13 steps
coincidence

my OCD can confirm this coincidence, since it doesn't happen to me.
--"In this era of great big brains anything that can happen will. So hunker down." -- Kurt Vonnegut, JR. -- Galapagos.
Anonymous Coward
User ID: 21211135
United States
11/10/2012 10:13 AM
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Re: Why do all flights of stairs have 13 steps
11 to basement
15 to second floor
13 to attic

It averages at 13, though.
Mkguyver

User ID: 25800617
United States
11/10/2012 10:13 AM
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Re: Why do all flights of stairs have 13 steps
They all don't have thirteen steps.
Fail
Anonymous Coward (OP)
User ID: 27244947
United Kingdom
11/10/2012 10:15 AM
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Re: Why do all flights of stairs have 13 steps
coincidence

my OCD can confirm this coincidence, since it doesn't happen to me.
Quoting: Mordier L'eft

you count stairs too and find they are not built in sets of 13? I dont believe you. the below poster proves they are in sets of 13.

Wall height is 8 feet.
When cutting the stringers for a staircase, there are codes that must be followed.
Here, it is a rise of no more than 7.75 per step.

The variable between the rise of the first step and the last can be no more than 3/8 inch.
Usually the general rule is 7.5 rise by 10 inch run.
Depends on the floor finish.

Do the math.
Quoting: Waterbug

Damn beat me to it...Nothing to see here move along
Quoting: 05h20

There is the esoteric and the exoteric and the freemasons are the master builders who use stairways as an important part of their traditions and rituals. rather than saying there was a conspiracy I was merely highlighting the link.
I have no issue with the number 13 either.

so why is the wall 8ft and the rise no more than 7.75? why not 8.5ft and 7.5 rise?

Waterbug

User ID: 1295673
United States
11/10/2012 11:02 AM
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Re: Why do all flights of stairs have 13 steps
coincidence

my OCD can confirm this coincidence, since it doesn't happen to me.
Quoting: Mordier L'eft

you count stairs too and find they are not built in sets of 13? I dont believe you. the below poster proves they are in sets of 13.

Wall height is 8 feet.
When cutting the stringers for a staircase, there are codes that must be followed.
Here, it is a rise of no more than 7.75 per step.

The variable between the rise of the first step and the last can be no more than 3/8 inch.
Usually the general rule is 7.5 rise by 10 inch run.
Depends on the floor finish.

Do the math.
Quoting: Waterbug

Damn beat me to it...Nothing to see here move along
Quoting: 05h20

There is the esoteric and the exoteric and the freemasons are the master builders who use stairways as an important part of their traditions and rituals. rather than saying there was a conspiracy I was merely highlighting the link.
I have no issue with the number 13 either.

so why is the wall 8ft and the rise no more than 7.75? why not 8.5ft and 7.5 rise?

Quoting: Anonymous Coward 27244947

Gotta have a standard to build with.
You could use any size of anything but the different materials must match dimensions, ultimately.

The rise and run have to do with ease of climbing and balance.
The 1.5 inch overhang on treads is also for balance.

13 is merely a number.
One more than twelve.. one less than 14.

The 7/10 rise/run standard for humans is uncomfortable for reptilians...

If you get chased by one, find and run up a flight of stairs and you will lose him in the dust.

Kind the opposite of running from a bear.
Run downhill from a bear.. he has no brakes going downhill. At the last moment.. dodge sideways and the bear will keep going till he hits the bottom..

By then you can distance yourself from the bear
or from your slower friends, at least.

Hope this helps..
Anonymous Coward
User ID: 27432696
United States
11/10/2012 11:44 AM
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Re: Why do all flights of stairs have 13 steps
you count stairs too and find they are not built in sets of 13? I dont believe you. the below poster proves they are in sets of 13.

Quoting: Anonymous Coward 27244947

Dude, get over it, it all depends on the distance from one floor to the next. 8' is average height, with a standard set for treadway. Because it works out to average of 13 steps is not a fucking conspiracy. Goddamn!
Anonymous Coward
User ID: 10771535
United States
11/10/2012 11:58 AM
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Re: Why do all flights of stairs have 13 steps
>implying all stairs have 13 steps
Anonymous Coward
User ID: 27441934
United Kingdom
11/10/2012 12:04 PM
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Re: Why do all flights of stairs have 13 steps
>implying all stairs have 13 steps
Quoting: Anonymous Coward 10771535

Mordier L'eft

User ID: 27419590
11/10/2012 06:16 PM
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Re: Why do all flights of stairs have 13 steps
coincidence

my OCD can confirm this coincidence, since it doesn't happen to me.
Quoting: Mordier L'eft

you count stairs too and find they are not built in sets of 13? I dont believe you. the below poster proves they are in sets of 13.

Wall height is 8 feet.
When cutting the stringers for a staircase, there are codes that must be followed.
Here, it is a rise of no more than 7.75 per step.

The variable between the rise of the first step and the last can be no more than 3/8 inch.
Usually the general rule is 7.5 rise by 10 inch run.
Depends on the floor finish.

Do the math.
Quoting: Waterbug

Damn beat me to it...Nothing to see here move along
Quoting: 05h20

There is the esoteric and the exoteric and the freemasons are the master builders who use stairways as an important part of their traditions and rituals. rather than saying there was a conspiracy I was merely highlighting the link.
I have no issue with the number 13 either.

so why is the wall 8ft and the rise no more than 7.75? why not 8.5ft and 7.5 rise?

Quoting: Anonymous Coward 27244947

yes, well, what happens with 10 foot ceilings? they are common in the old buildings in my city.

my own house has 15 steps to the upstairs and ten to the basement.

so, don't believe me if you want to. that just proves that you have trouble getting past your own OCD to see much logic. i'm sorry for that. i hope it works out for you.
--"In this era of great big brains anything that can happen will. So hunker down." -- Kurt Vonnegut, JR. -- Galapagos.