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<h2 align=center>CUCC Expedition Handbook: Surveying<br>
At Base Camp</h2>
<p>The original notes and sketches should be filed in a clearly marked
envelope - don't take them out until you are ready to draw up, and put them
away again as soon as you have finished. They may never be referred to again,
but ultimately they are the most valuable record of your survey and are kept
for reference if there is ever a problem.
<p>Take the printed centre lines and redraw the survey round it, working from
the original sketches as if this was to be the final published survey. You
can "invent" details like boulders in boulder-strewn passage, but otherwise,
draw only what was recorded faithfully in the cave. If this makes your
drawing look bad - record more next time ! If things really are unclear,
consider taking a copy of this drawing back into the cave to clarify it.
<p>Make sure the drawing clearly shows the point of connection to previous
surveys (look at the relevant drawing in the old survey book to ensure the
sketches match and you really have connected where you think). Make sure you
note which Question Mark was addressed by this survey and show the location
of any new question marks, with an estimate of quality and any difficulties
which will be encountered (eg. if it is a climb, are bolts going to be
needed ? If a dig, is it a few loose boulders or a crawl over mud ?)
<p>CUCC use a set of symbols pretty close to the standard ones promulgated
by the BCRA, with occasional differences - such as large-enough boulders
which are sketched to scale using the US symbol. The current state of
standardisation for cave survey symbols (a useful guide to what we should
be using where possible) has been documented by
<a href="http://www.olsen.ch/~devon/uis/misc/praezis/">H&auml;uselmann,
Weidmann and Ruder (1996)</a>, but this is up for discussion in 1997.
An alternative set of standards can be seen from the
Australian Speleological Federation
<a href="http://rubens.its.unimelb.edu.au/~pgm/asf/stdsurv.html">here</a>.
<p>Make sure that you draw both plan and elevation (the latter should be an
extended section, rather than a projected elevation) for horizontal passage.
For pitches, several plans at different levels may be easiest (rather like
the cross sections at each survey station used in horizontal passage). Also
projected elevations may be useful in addition to the extended section.
<p>Write a <b>passage description</b>. This should be detailed enough to be
followed by someone in the cave who hasn't been there before, and should
include all passage names, lengths of pitches and climbs, compass directions
when this makes left/right/ahead clearer. If your passage is a connection
it is worth while writing descriptions from both directions. It will be
regarded as helpful if you actually type this description into a computer
rather than writing in the survey book - but make sure it can be found again!
In written descriptions, underline passage names the first time they are
mentioned, or when they are "defined".
<p>Complementing the passage description in vertical bits is a <b>Rigging
Guide</b>. This is usually easiest to do as a sketch, but include notes to
ensure that all bolts can be found again, and all natural belays recognised.
Ideally, the knots should be left in ropes removed at derigging, so they can
be <b>measured</b> for the rigging guide. Remember to do this before undoing
the knots for rope-washing. Although a good survey and details of the belays
can be used to estimate the length of rope needed, this is no substitute for
measuring how much rope it actually took to rig !
<p>If you did all that properly, there should be very little left to do in
the UK, unless you have volunteered to help with drawing up the final survey.
However, it is as well to check that you have done all you can before BCRA
conference, by reading the <a href="athome.htm">Back in the UK</a> page.
<hr>
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Further Reading:
<a href="../../../jnl/1985/survey.htm">Survey Draughtsmanship</a>
(CU 1985)<br>
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<b>Expedition Handbook</b>:<br>
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<b>Surveying</b>:<br>
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<a href="index.htm">Back to overview</a> and index of topics<br>
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<a href="what.htm">What is a cave survey ?</a><br>
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<a href="why.htm">Why am I doing this ?</a><br>
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Methods: <a href="how.htm">underground</a><br>
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Pitfalls to avoid, <a href="hints.htm">hints'n'tips</a>
to make life easier<br>
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Methods: <a href="ontop.htm">surface</a><br>
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Getting a <a href="gps.htm">GPS fix</a><br>
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Base Camp: <a href="getin.htm">getting it in</a> to the computer<br>
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Back <a href="athome.htm">in the UK</a><br>
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Expo Handbook <a href="../index.htm">Introduction</a><br>
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<a href="../look4.htm">Prospecting guide</a><br>
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<a href="../rescue.htm">Rescue guide</a><br>
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<a href="../rigit.htm">Rigging guide</a><br>
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<a href="../photo.htm">Photography guide</a><br>
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<a href="../../infodx.htm">Index to info/topics pages</a><br>
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<a href="../../indxal.htm">Full Index to area 1623</a><br>
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<a href="../../areas.htm">Area/subarea descriptions</a><br>
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<a href="../../index.htm">Back to Expedition Intro page</a><br>
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