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101 lines
4.7 KiB
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<title>CUCC Expo Surveying Handbook: Drawing Up</title>
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<link rel="stylesheet" type="text/css" href="../../css/main2.css" />
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<body>
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<h2 id="tophead">CUCC Expo Surveying Handbook</h2>
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<h1>Drawing up your survey</h1>
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<p>The original notes and sketches will be filed in a clearly marked
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wallet - see <a href="newcave.html#newwallet">"Creating a new cave"</a>
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- don't take them out until you are ready to scan them, and put them
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away again as soon as you have finished. They may never be referred to again,
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but ultimately they are the most valuable record of your survey and are kept
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for reference if there is ever a problem.</p>
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<p>After typing in all the data in <a href="newcave.html#survexformat">
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survex format</a> , run
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<a href="newcave.html#runsurvex">
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aven</a> (the GUI interface to survex) and print out a centre-line plan.
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<p>Take the printed centre lines and redraw the survey round it, working from
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the original sketches as if this was to be the final published survey. You
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can "invent" details like boulders in boulder-strewn passage, but otherwise,
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draw only what was recorded faithfully in the cave. If this makes your
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drawing look bad - record more next time! If things really are unclear,
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consider taking a copy of this drawing back into the cave to clarify it.</p>
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<p>Make sure the drawing clearly shows the point of connection to previous
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surveys (look at the relevant drawing in the old survey book to ensure the
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sketches match and you really have connected where you think). Make sure you
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note which Question Mark was addressed by this survey and show the location
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of any new question marks, with an estimate of quality and any difficulties
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which will be encountered (eg. if it is a climb, are bolts going to be
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needed ? If a dig, is it a few loose boulders or a crawl over mud?)</p>
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<p>CUCC use a set of symbols pretty close to the standard ones promulgated
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by the BCRA, with occasional differences - such as large-enough boulders
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which are sketched to scale using the US symbol. The current state of
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standardisation for cave survey symbols (a useful guide to what we should
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be using where possible) has been documented by
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<a href="http://www.chaos.org.uk/survex/cp/CP14/CPoint14.htm">Häuselmann,
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Weidmann and Ruder (1996)</a>, but this is up for discussion in 1997.
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An alternative set of standards can be seen from the
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Australian Speleological Federation
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<a href="http://www.caves.org.au/resources/internal-resources/category/29-surveying">here</a>.</p>
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<p>Make sure that you draw both plan and elevation (the latter should be an
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extended section, rather than a projected elevation) for horizontal passage.
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For pitches, several plans at different levels may be easiest (rather like
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the cross sections at each survey station used in horizontal passage). Also
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projected elevations may be useful in addition to the extended section. But
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learning a good set of procedures for using survex is the way to go.</p>
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<p>If you did all that properly, there should be very little left to do in
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the UK, unless you have volunteered to help with drawing up the final survey.
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(Fool!) However, it is as well to check that you have done all you can before
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BCRA conference, by reading the <a href="athome.htm">Back in the UK</a> page.</p>
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<!-- This looks like a rather hollow joke in the context of the last year's
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experience: it's now late April 2004, and the 204 survey is only just
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approaching completion. This shows how easy it is for these things to go wrong.
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The chief problems were a change of software and the fact that the Expo printer
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broke down last summer, so a number of surveys never got drawn up. -->
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<hr />
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<ul id="links">
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<li><b>Expedition Handbook:</b>
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<ul>
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<li>Expo Handbook <a href="../index.htm">Introduction</a></li>
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<li><b>Surveying:</b>
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<ul>
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<li>Surveying <a href="index.htm">Overview</a> and index of
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topics</li>
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<li><a href="what.htm">What is a cave survey?</a></li>
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<li><a href="why.htm">Why am I doing this?</a></li>
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<li>Methods: <a href="how.htm">underground</a></li>
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<li>Pitfalls to avoid, <a href="hints.htm">hints'n'tips</a></li>
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<li>Methods: <a href="ontop.htm">surface</a></li>
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<li>Base Camp: <a href="getin.htm">getting it in</a> to the
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computer</li>
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<li>Base Camp: drawing it up</li>
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</ul></li>
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<li><a href="../look4.htm">Prospecting guide</a></li>
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<li><a href="../rescue.htm">Rescue guide</a></li>
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<li><a href="../rigit.htm">Rigging guide</a></li>
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</ul></li>
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<li><a href="../../infodx.htm">Index to info/topics pages</a></li>
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<li><a href="../../indxal.htm">Full Index to area 1623</a>
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<ul>
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<li><a href="../../areas.htm">Area/subarea descriptions</a></li>
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</ul></li>
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<li><a href="../../index.htm">Expedition Intro page</a></li>
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<li><a href="../../../index.htm">CUCC Home page</a></li>
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</ul>
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</body>
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</html>
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