Evaluate my tarp idea?

This is actually one idea that I have been considering making. Due to laziness, fear (of there being something better), and some procrastination, I have not started my tarp yet. However, to answer your question, this tarp will work great and be very versitle. Just make sure you have all the details worked out and the measurments right.

Photo

Thanks Kyle! That's encouraging. Good pic, David. You made that? What dimensions did you go with?

I've also been Googling, etc. to find tips on how to pitch tarps in different configurations but haven't found much. Anyone know of a good article?

I guess I could get a piece of plastic and play around but I'll have to get better at making knots and loops that will hold the plastic body :)

Being this is BPL, I'll talk about what to do with silnylon … I've not yet sewn gortex.

If your ridgeline seam is horizontal in your diagram, just bury a short piece of grosgrain in the seam to reinforce the center tie out.

For the other four, sew the tie out loops to a 4 inch circle of silnylon and glue that circle to the tarp with GE Silicon Sealler II. That works quite well … I've had a tarp pretty well collapse under heavy wet snow without pulling glued tie outs loose.

Thanks Jim! I like the idea of using the silnylon circles glued to the tarp – less to seal when I'm done. And the grosgrain ribbon on the ridgeline would work well, too. Gave me a 'duh!' moment when I read that :)

7'x7' is small for a versatile tarp.

Unless you're a midget. ;-)

I've added tie-out loops on the body of a silnylon tarp meant for main support so they should be able to take a big load. I used a small square (like 3×3") of heavy fabric sewn under the silnylon with the nylon webbing loop sewn over it all. The heavy fabric does not suffer under stress. I've put lots of tension on these tie-out loops and they held perfectly. The weight penalty is not big as the patches are small. Double row of stitches all around the patch perimeter so the load on the silnylon side of the seams is shared.
http://www.viajarapie.info/do_it_yourself/siltoldo.htm
scroll down to the bottom for some pics and comments.

If you want flexibility, I'd make it bigger. The 7×7 size will limit your pitching options to basically none.

http://www.equipped.org/tarp-shelters.htm

Thanks guys! Rog, I'm not a midget but not that tall either (5'4"). My husband is the same height. After looking over Inaki's project and the link David sent (both very cool and JUST the info I was looking for)I'm thinking I need at least a 10' x 10' minimum size. I'm going to be occupied with trying a lot of those pitching options for a while! Now the idea of playing with that sheet of plastic seems exciting! It should be very entertaining for the neighbors, too :)

What tarp dimensions do you folks recommend for pitch versitility, spacious for 1, and comfortable squeeze for 2?

Thanks again!

10×10 sounds about right, but play with the plastic to test it. Tip for making position-test tie-out points in light plastic: push a ping pong ball into the plastic and tie it off with a rubber band to attach guylines to. remember that in fair weather you can increase headroom and ventilation by extending the edge tie-outs with cordage to raise the tarp off the ground.

Have fun, you may want to use opaque plastic to keep the neighbours guessing. ;-)

FWIW I use a 14oz Integral Designs sil shelter tarptent. Not the most versatile, but bomproof shelter with tie-outs every 2 feet along the edges plus 5 on top. Lots of light thin Ti pegs and tie-out points gives more options on tough terrain, and spreads load better in heavy wind. It's big enough for two midgets or one tallbloke :-)

I made a 2oz A-frame poleset out of two telescopic fishing rods from the dollar store which work well and give more room at the entrance. It's worth taking a look at the design of this tarptent for the location of seams and having a think about where the major stress lines are in high winds; we get a lot of those in the UK. All the top tie-outs are at seam junctions, and there are two reinforced pole caps underneath at the apex and rear seam junction.

Shamelessly copied from

http://www.moontrail.com/integral-designs-silshelter.php