Shade Material. Anyone? Anyone?

Ideas, advice, tips, and tricks regarding shelter, shade, tents, and camping. Yes, this includes RV's too.
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LoloMojo
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Shade Material. Anyone? Anyone?

Post by LoloMojo » Wed Aug 01, 2007 12:12 pm

Hey there,

We set up our new big ass tent last night and realized our shade structure wont' work with it. That aluminet shade mateiral is quite expensive. Can anyone recommend another kind of material that is effective, cheap and readily available at this late date? I live in Seattle so a local place would be great but also a cheap online source woudl be good too. Need it to cover an area about 15' x 10'.

Thanks!!

Lolo

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Bob
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Post by Bob » Wed Aug 01, 2007 12:29 pm

Tie-dyed bedsheets.
Amazing desert structures & stuff: http://sites.google.com/site/potatotrap/

"Let us say I suggest you may be human." -- Reverend Mother Gaius Helen Mohiam

notonmysofa
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Post by notonmysofa » Wed Aug 01, 2007 12:31 pm

Mesh material you can get at a garden supply store, I've got it at OSH and Home Depot before, forget how much but waaaay less than aluminet. Comes in 6'x30' rolls, usually tan or blue mesh. Use a grommet tool to make grommets along the sides. It's been working great for us.

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LoloMojo
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Shade Material. Anyone? Anyone?

Post by LoloMojo » Wed Aug 01, 2007 12:48 pm

Thanks for the tips!

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Ugly Dougly
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Post by Ugly Dougly » Wed Aug 01, 2007 4:00 pm

Canvas painters tarps.

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Ebenezer Squeezer
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Re: Shade Material. Anyone? Anyone?

Post by Ebenezer Squeezer » Wed Aug 01, 2007 4:19 pm

That Swedish white snow camo netting works pretty good. I think it's made of tyvek, the same material that they wrap houses in and make non-rip mailing bags out of. Anyway, last year it could be found at that Army surplus place on 1st Ave South across the street from Home Depot. Plenty of places also sell it online.

jacksoncrew
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Tyvek!

Post by jacksoncrew » Wed Aug 01, 2007 7:25 pm

We were just discussing tyvek as possible covering. If this sounds like a good thing, try searching for construction sites. They might be wrapping a house with Tyvek and might have scraps that can be sewn together to make a free covering...

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Davoid
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Post by Davoid » Thu Aug 02, 2007 1:07 am

For three years I used two of those Tyvek white camo "tarps" tied together at one end to cover my 10' x 20' quonset hut, but after last year, I retired 'em. It had started to tear in many places, though that was due in part to using more than the grommeted holes with which to tie the thing down. I used some of the camo pattern holes, too, since the thing is fairly lacking in grommets. If you go this route, I recommend reinforcement with tape, clip-it grommets, or what have you.

This year I'm going with some shade cloth I read about on here somewhere. This is their site. A 10' x 20' piece, which was a custom size, ran me $160, though one of their listed sizes will be cheaper (sorry, I didn't see 10' x 15'). It's reinforced at the edges and has brass grommets every two feet, I was told. I haven't received the thing yet, let alone used it, but I'm confident.

I was told shipping time cross-country would be 2.5 weeks, so order soon if you're going to.

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LoloMojo
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Shade Material. Anyone? Anyone?

Post by LoloMojo » Thu Aug 02, 2007 11:41 am

Shadey friends,

Davoid - that shade material that davoid was talking about is more expensive than the aluminet.

Big silver tarps are good but since they don't breathe they shoudl be rigged at least 12" above your tent to promote the airflow otherwise can be hot.

I found a place online where you can get a good deal on aluminet. THey can get it to you by 8/22 if you order soon. The aluminet is more effective and durable than the tyvek when it comes taped and grommetted. Here is the deal I got:

I got a taped and grommetted 12'x17' piece of 70% ultra aluminet for $92.74 including taxes and shipping. (It was $63.24 without tape and grommet). Contact tasha at the below info and tell her your using it for burning man. she'll give you a discount on shipping.

Tasha DeMouy
Sales Assistant
Gothic Arch Greenhouses
PO Box 1564
Mobile, AL 36633
251-432-7529 (local)
800-531-4769 (toll-free)
251-432-2655 (fax)
[email protected]
www.GothicArchGreenhouses.com

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Elliot
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Post by Elliot » Fri Aug 03, 2007 1:11 pm

:D
I just ordered a farmers hay tarp, and I wonder how big a mistake I made? :wink:

It's 40 feet by 60 feet, has grommets every 18 inches, assorted reinforcements, and costs $305. The big worry is the material, but she said it is much sturdier than the cheapo blue tarps that every other hillbilly has flapping in shreds from his pickup truck. She said it is 1200 denier, whatever that means. It weighs 138 pounds. I'm getting it from an Ag West Supply store in Oregon. I'll report back when it arrives.

Meanwhile, any thoughts?
:D

MozyBonz
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Post by MozyBonz » Fri Aug 03, 2007 1:21 pm

Elliot wrote::D
I just ordered a farmers hay tarp, and I wonder how big a mistake I made? :wink:

It's 40 feet by 60 feet, has grommets every 18 inches, assorted reinforcements, and costs $305. The big worry is the material, but she said it is much sturdier than the cheapo blue tarps that every other hillbilly has flapping in shreds from his pickup truck. She said it is 1200 denier, whatever that means. It weighs 138 pounds. I'm getting it from an Ag West Supply store in Oregon. I'll report back when it arrives.

Meanwhile, any thoughts?
:D

thats a big sail....Cut vent holes lots of vent holes.

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Elliot
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Post by Elliot » Fri Aug 03, 2007 1:28 pm

:D
Yes, ship ohoy!

I intend to attach the 40 foot side along the roof of my 40 foot school bus, with two other stout vehicles at the other end of the tarp. Steel cables pulled tight by inching the other two vehicles forward until tight. Do you think I will still need vents?
:D

MozyBonz
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Post by MozyBonz » Fri Aug 03, 2007 3:50 pm

Just be prepared to cut them quick if you need to.

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Elliot
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Post by Elliot » Fri Aug 03, 2007 5:38 pm

Just be prepared to cut them quick if you need to.
That scenario strikes me as unacceptable. :shock:

But I do plan to have the tarp attached to the cables with steel rings so that the the tarp can be retracted into a bundle against the bus. Would probably be smart to do that each day at sundown, and deploy it again in the morning.

Do you have any kind of approximate numbers on how much force such a tarp, stretched flat, horizontally, 12 feet above ground, might generate? Enough to move a parked car?
:D

MozyBonz
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Post by MozyBonz » Fri Aug 03, 2007 6:10 pm

The Sail Wind Load is about 66201.6 Pounds at a Wind Speed of 80 Knots.

65 to 83 knots is about 74 to 95 mph

Load in Pounds = Sail Area * (Wind Speed )2 * 0.00431

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Elliot
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Post by Elliot » Fri Aug 03, 2007 6:39 pm

:D
.
Uh oh.

66.000 pounds. The bus weighs 20.000. ("You guys are in sooooo much trouble!")

All right, back to engineering school. (I dropped out.)
The wind travels largely horizontally along the playa. The tarp will be mounted flat horizontally, with something like two, three or maybe four feet of sagging. So it will be an airplane wing with four feet of... what do they call it... chord? Am I thinking correctly? Is this what will provide 66.000 lbs of lift? Or 66.000 lbs of drag?

I'm hoping your formula applies to a sail that is vertical, like a brick wall, taking the wind head on against the full 2400 square foot surface. Could you clarify?

66.000 pounds. We may not be "in Kansas" very long! :lol:

:D

MozyBonz
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Post by MozyBonz » Fri Aug 03, 2007 6:46 pm

http://www.sailingusa.info/cal_wind_load.htm


This is only an approximation using a sail load calculator like this one.

That load would be on a trimmed sail not a shade. But you are sure to get a % of the load on the shade but unlikely to be 100%. I would just plan for it.

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Elliot
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Post by Elliot » Fri Aug 03, 2007 7:03 pm

:D
Oooo, nifty site! So much to learn out there!
But they talk about wind against a "brick wall", yes.

If the "airplane wing lift" is ten percent of that, we'll be OK -- unless the cloth tears, in which case the problem... uh... blows away by itself. :roll:

Appreciate the input!
:D

MozyBonz
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Post by MozyBonz » Fri Aug 03, 2007 7:28 pm

Remember a wing is not tethered to any thing. On a boat it’s the water. On the shade it’s the bus. So it would be as much of a brick wall as the weakest link in the shade.

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