Wind Loads

Ideas, advice, tips, and tricks regarding shelter, shade, tents, and camping. Yes, this includes RV's too.

Wind Loads

Postby Leo » Fri Dec 02, 2011 6:17 pm

I'm looking forward to attending my 4th burn and I'm designing a prefab 2 story tower for my camp. A structural engineer friend of mine has offered to do the structural calculations but wanted to know what wind speed to design for. I was figuring a sustained wind speed of 80mph would be a reasonable number. Any thoughts?
Best Regards,
Leo
Leo
 
Posts: 133
Joined: Mon May 24, 2010 9:25 pm
Location: Seattle

Re: Wind Loads

Postby ygmir » Fri Dec 02, 2011 6:20 pm

that's where I'd go.
gotta have a cushion, and, gusts can get close to that.
also, remember they can come from any direction........there is prevailing, but, in a big dust devil/dust strom, with swirling, all bets are off.
ask your engineer, if the addition of copious amounts of dust, adds to the force for a given wind speed, due to the mass of the dust.
I've always wondered that. I think, it should.
YGMIR

Unabashed Nordic
Pagan
User avatar
ygmir
 
Posts: 27021
Joined: Thu Sep 20, 2007 8:36 pm
Location: nevada county
Burning Since: 2017
Camp Name: qqqq

Re: Wind Loads

Postby unjonharley » Fri Dec 02, 2011 6:28 pm

I put up a black balloon while the surface was claim..

Suprised me to find the wind changed direction about every twenty feet.
User avatar
unjonharley
 
Posts: 9998
Joined: Tue Sep 09, 2003 11:05 am
Location: Salem Or.

Re: Wind Loads

Postby BBadger » Fri Dec 02, 2011 11:15 pm

I think it has hit 100mph before, though these past two years it's been abnormally calm.

It will also depend on where your structure is placed for shielding and what direction most of the wind goes, even if it changes. I remember reading that the wind blows more in certain directions.
"The essence of tyranny is not iron law. It is capricious law." -- Christopher Hitchens

Hate reading my replies? Click here to add me to your plonk (foe) list.
User avatar
BBadger
 
Posts: 4432
Joined: Wed Jan 19, 2011 11:37 am
Location: (near) Portland, OR, USA
Burning Since: I'm not sure

Re: Wind Loads

Postby Bob » Mon Dec 05, 2011 9:50 pm

Leo wrote:...80mph...


Good as any number.
Amazing desert structures & stuff: http://sites.google.com/site/potatotrap/

"Let us say I suggest you may be human." -- Reverend Mother Gaius Helen Mohiam
User avatar
Bob
 
Posts: 6762
Joined: Wed Sep 03, 2003 10:00 am
Location: San Francisco
Burning Since: 1986
Camp Name: Royaneh

Re: Wind Loads

Postby Savannah » Mon Dec 05, 2011 11:39 pm

The top wind speed most frequently quoted on the main Burning Man website is 70 MPH. However, expecting up to 100 MPH is nice if you can swing it.
User avatar
Savannah
Moderator
 
Posts: 11173
Joined: Mon Sep 01, 2008 8:33 pm
Burning Since: I'm not sure

Re: Wind Loads

Postby gyre » Wed Dec 07, 2011 6:51 am

The gusting is worse than steady wind.

I was told that a second story triples loads.
User avatar
gyre
 
Posts: 15465
Joined: Sun Aug 07, 2005 6:01 pm
Location: ΦάÏ

Re: Wind Loads

Postby Sail Man » Wed Dec 07, 2011 8:58 am

ygmir wrote:that's where I'd go.
gotta have a cushion, and, gusts can get close to that.
also, remember they can come from any direction........there is prevailing, but, in a big dust devil/dust strom, with swirling, all bets are off.
ask your engineer, if the addition of copious amounts of dust, adds to the force for a given wind speed, due to the mass of the dust.
I've always wondered that. I think, it should.


Well, it is just.......

Excuse me Ma'am, your going to feel a small prick.
_______________________________________

Algorithms never survive the first thirty seconds of patient contact
User avatar
Sail Man
 
Posts: 4515
Joined: Tue Sep 30, 2008 10:03 am
Location: 20 Minutes into the Future
Burning Since: 2008
Camp Name: Kidsville: Delicious

Re: Wind Loads

Postby Bob » Wed Dec 07, 2011 9:14 am

Well, here's some building code guidance for a nearby biggest little city.

http://www.co.washoe.nv.us/bldgsafety/const_req_index.html
Amazing desert structures & stuff: http://sites.google.com/site/potatotrap/

"Let us say I suggest you may be human." -- Reverend Mother Gaius Helen Mohiam
User avatar
Bob
 
Posts: 6762
Joined: Wed Sep 03, 2003 10:00 am
Location: San Francisco
Burning Since: 1986
Camp Name: Royaneh

Re: Wind Loads

Postby Leo » Thu Dec 08, 2011 2:48 pm

Thanks Bob!
Best Regards,
Leo
Leo
 
Posts: 133
Joined: Mon May 24, 2010 9:25 pm
Location: Seattle


Return to Shelter & Camping

Who is online

Users browsing this forum: bitsychi and 2 guests