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New photo for rigging bivi tarp

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Philip Sargent 2020-02-27 17:45:54 +00:00
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commit fd3df05074
4 changed files with 38 additions and 27 deletions
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65
handbook/bivirig.html
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@ -1,4 +1,4 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf8" />
@ -7,7 +7,7 @@
</head>
<body>
<h1>Bivi Riggin Guide</h1>
<h1>Bivi Rigging Guide</h1>
<p>Every year some poor bugger who has probably never done it before it
gets to rig the tarps and be responsible for any soggy miserable
@ -21,13 +21,13 @@ work. Feel free to improve it over time.</p>
<p>There are two essentially-separate jobs:
<ol>
<li>set up the
water-collecting tarp</li>, and
<li>set up the main tarp</li>
<li>the
<a href="water">water-collecting tarp</a>, and </li>
<li>the <a href="#main">main tarp</a></li>
</ol></p>
<p>If there is any chance of it raining soon, start with the water
tarp, as you <strong>really</strong> don't want to miss it, and
<p>If there is any chance of it raining soon, <strong>start with the <a href="water">water
tarp</a></strong>, as you <strong>really</strong> don't want to miss collectingt all that water, and
setting up in the rain is rubbish.</p>
<h2>Terminology</h2>
@ -38,28 +38,13 @@ up, because that works for all three sections. So the
gear/stove/animal-hole wall. The 'back' is the top end of the bridge.
The 'front' is the main entrance.</p>
<img src="bivirig.svg" alt="Drawing of pre-2015 tarp layout">
<h2>Water tarp</h2>
<p>Use a long/thin (2x5m) waterproof 'logpile' tarp. It is hung
between two side longitudinal ropes, with lots of bits of string
attaching the eyelets to the side ropes. Aim to hang it under the hole
in the roof, and far enough forward that water off the front falls
onto the 'water platform' (not into the food boxes).</p>
<p>It's easiest to approximately tie the tarp to the side ropes with
adjustable knots, then put the ropes in place, adjusting as you
go. The outer line ends up too high to adjust once properly in
place. Adjust it to catch as much of the water falling through the
hole as possible, and slope gently, but consistently downwards.</p>
<p>In past years we have hung the funnel in the hole. This is a faff
and misses a lot of water. Just hang it below the end of the tarp where
it will get nearly all the water and is much easier to hang/adjust/unclog.</p>
<h2>Main roof tarp</h2>
<h2 id="main">Main roof tarp</h2>
<p>How not to do it</p>
<img src="i/bivirignm.jpg" alt="Bivi Rigging Nightmare" width=800>
<p>Since 2015 we have one really big (15x10m, white) tarp (rather than
the smaller 10x10 green one, shown in the diagram). This covers the whole
sleeping area from front to back and is a lot drier. It is set up so
@ -68,6 +53,7 @@ wide enough to span the width of the bivvy. The instructions below are
a good guide as to how to set up any tarp, and the large white tarp
actually has a few instructions written on it. You can largely ignore
the 'fold' notes, and use your own judgement.</p>
<img src="i/bivirig.jpg" alt="Drawing of pre-2015 tarp layout" width=800>
<p>Start with the big white tarp. The long edge goes from front to
back of the bivi. The basic position is that it goes all the way to
@ -101,11 +87,36 @@ all the water runs down the top and out the front not collecting in
'buckets', which then drip. That means that it has to be fitted quite
'flat'. </p>
<p>Ideally the lines that run down from back to front should be so tight that
no cross-lines are needed. Thene there can be no dripping pockets at all. This requires
threading lines through maillons in the roof, rather than tying them off,
then pulling down on the line with all your weight (jammer and a friend useful)
before tying off at another bolt at about waist level.
You should not need to put in new bolts, they should all be in place already.
<h3>Rear entrance tarps</h3>
<p></p>
<p>to be written</p>
<h3>Frot entrance tarps</h3>
<p>to be written</p>
<h2 id="water">Water tarp</h2>
<p>Use a long/thin (2x5m) waterproof 'logpile' tarp. It is hung
between two side longitudinal ropes, with lots of bits of string
attaching the eyelets to the side ropes. Aim to hang it under the hole
in the roof, and far enough forward that water off the front falls
onto the 'water platform' (not into the food boxes).</p>
<p>It's easiest to approximately tie the tarp to the side ropes with
adjustable knots, then put the ropes in place, adjusting as you
go. The outer line ends up too high to adjust once properly in
place. Adjust it to catch as much of the water falling through the
hole as possible, and slope gently, but consistently downwards.</p>
<p>In past years we have hung the funnel in the hole. This is a faff
and misses a lot of water. Just hang it below the end of the tarp where
it will get nearly all the water and is much easier to hang/adjust/unclog.</p>
<p></p>
</body>
</html>

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