expoweb/handbook/survey/getin.htm

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<h2 align=center>CUCC Expedition Handbook: Surveying<br>
Base Camp: from muddy book to Survex plot</h2>
<p>The original notes and sketches should be filed in a clearly marked
envelope - don't take them caving again and don't leave them lying around to
be "G&ouml;ssered" !
<p>The notes (all of them, including dates, personnel, calibration, LRUD,
station details, etc.) should be copied onto a fresh page of the Survey Book
while everyone's memory is still fresh (this helps if something is only
marginally legible). This should be proof checked by someone else. Current
survey books are divided into "Kaninchenh&ouml;hle" (usually referred to as
"KH Survey book") and "surface stuff and other caves" (usually referred to as
"notKH survey book"). There should be an index page at the front, which you
should also fill in so that people can find your survey again.
<p>The data should be typed into whichever computer is being used for the
survey, again including all the notes, including station details and passage
names (and make a backup copy to a floppy or another machine). It is
<b>absolutely essential</b> that you also fill in details of which survey
book the notes are in, with page numbers.
<p><center><a href="../../piclinks/typing.htm">
<img src="../../tinypix/typing.jpg" width=176 height=115></a></center>
<p>Survex has its own documentation for the format of the data, though the
template file and a look at someone else's data will quickly make this
fairly clear. Survex has some very flexible data entry options, so there
are a few extra guidelines to try to get some consistency in the way
everyone uses it within this project.
<ul>
<li>It will be easiest if you start from one of the existing template files,
as these have lines to remind you to add various details - make sure you
don't leave any blanks! Copy this to where you want to put your data
<u>before</u> editing it (with any luck, the template should be on CD-ROM, so
you can't trash it :-).
<li>Filenames: Because Survex is used on different sorts of computer, it is
best to use filenames which won't get changed when the files are moved
between systems. On a PC this means using xxxxxxxx.SVX, where "xxxxxxxx" is a
name of letters, numbers and maybe the underscore character, with a maximum
length of eight. On an Acorn machine, the equivalent filename is
"xxxxxxxx/SVX", and should have a filetype of "Text". Note that this must be
kept in an image filing system such as SparkFS (.ZIP), X-files or DOSFS
(which is most logical) to avoid truncation. I know Windows lets you have
long meaningful names, but these tend to get lost on DOS floppies, or when
moved to other machines. For directories (=folders), use a maximum of eight
characters with no extension.
<li>Where to put your data: <b>If in doubt, ASK !</b> If it is a surface
survey, it goes in the "Surface" directory. If it is a file of fixed points
(like GPS fixes, or map coordinates), it goes in the "FixedPts" directory. If
it is a new or minor cave on the plateau, it goes in "Plateau", if it is on
the Vorderer Schwarzmooskogel above the Stellerweg system, or it is somewhere
near 161 (but not connected to it), it goes in "VSKcaves". If it is downhill
from Stellerweg (near the Stogerweg path), it goes in "Stoger". If it is
underground survey which connects to the Stellerweg system, then it goes in
"41.CUCC". There is a "41.Arge" folder for data we get from the Germans doing
resurvey and new stuff in this cave, and a "78" folder which is for their
Schwabenschacht stuff. "182" is for Puffball, and "161" is for the great mass
of Kaninchenh&ouml;hle data.
<p>The KH data is split into areas in directories "136" (all of 136 and the
Forbidden Land), "Chile" (everything from the start of 1999), "France" (all
the vertical France stuff, and flat France up to approx French Revolution),
"LHR" (all the left hand routes, and Ambidextrous), "North" (everything from
Carrefour north, including Siberia), "PHumour" (all Puerile Humour, Iceland
etc.), "RHR" (all the right hand routes, and through Knossos to Carrefour),
"Top" (just stuff near 161a entrance) and "Triassic" (Triassic Park and all
its side leads except Puerile Humour). If you really aren't sure where your
data should go, there is nothing to stop you using a "New" directory.
<p>There is a <a href="svindx.htm">complete index</a> to all the existing
surveys, which should enable you to find the data for any survey station,
once you know its name. It's a fair bet that if your survey connects to a
station in one directory, your survey data should go in that same directory.
<li>What to call your survey: all your data should be inside a begin/end
pair with a meaningful name. There is nothing to stop you nesting these,
so you might use the name "mysurvey" and put two lots of data from different
trips in as "mysurvey.pt1" and "mysurvey.pt2". There is no restriction on
the length of these names, but as they can be displayed in Caverot, it helps
not to have anything too elaborate. Older versions of Survex required each
prefix to be unique in its first eight characters, and this is not a bad
guideline to follow. These names are <b>not the same as the filename</b>
you used, since one file may contain a number of related surveys.
<li>Every station should have a number <u>within your survey</u> even if it
is an existing station to which you have connected. Any survey stations
which you think can reliably be found again should be listed at the start of
your survey file. This includes the name (within your survey) of any
existing points you linked into. I have used lines like<br>
;*export mysurvey.pt1.0 ; 2nd bolt at head of new pitch<br>
this may or may not catch on as a standard.
</ul>
<p>At this stage, you have done enough to get a centre line for drawing up.
If you aren't completely confident about the structure of the Austria
data, it may be best not to try to link your survey to everything else
so skip the next bit and read on <a href="#concrete">from here</a>.
<p>However, if you need to see your survey in relation to the rest of the
cave:
<ul>
<li>Don't put any *equate directives to other surveys into your file (or
any survey legs which quote station names from other survey files).
Instead, go to the file which *includes the other files in the same area.
For example, if you have created a file Trivial.svx in the PHumour
directory, go to the file AllPH/svx, where you will find *include lines
for each of the files, together with the *equate lines to connect them
together. Add an include for your file, and *equate lines for each of
your survey stations which is the same as one in another survey. If
your survey connects to points in surveys in files in more than one
directory then the *equates should go in the All161/svx file, but at
this stage it is probably worth enlisting the help of someone who knows
the structure of the data inside-out !
<li>Make a note in the history file of the changes you made to the
controlling file (in this case AllPH/svx), and the fact that you added
a new file.
<li>You should now find that if you run Survex on one of the master files
(Just161.svx, JustSurf.svx, AllCaves.svx, etc.) which includes the area of
your new survey, it is linked in and will show up when you use the resultant
.3d file in CaveRot. Using Just161.svx should give info on how long and how
deep the cave is now.
</ul>
<p><a name="concrete">To make that</a> all a bit more concrete, here is a
fictitious example of a survey off Triassic Park. Lets say that you went to
explore a lead from the QM list numbered 98-23, that the nearest survey
station was listed as Triassic.pt2.45 and you found it successfully. You
surveyed back from a bolt at the end of your new passage where exploration
has stopped for the time being, and it took 37 survey legs to get back to
Triassic Park:
<pre>
; &gt; Triassic.Wibble : Wibbled by G&ouml;sser off Triassic Park
*begin Wibble
; Locn: Loser Plateau, Austria, Kataster Gruppe 1623
; Cave: Kaninchenhohle, 1623/161
; ====== stations refindable to link to other surveys: ======
;*export pt1.37 ; CM in Triassic Park II on L wall just past way to Wibble
; ====== links between surveys making up the Wibble survey: ======
*equate pt1.0 pt2.23
*begin pt1
; Cave: Kaninchenhohle, 1623/161
; Survey Name: Wibbled by G&ouml;sser - passage from QM 98-23
; Date: 2000.08.03
; By: Inst: M I Opic
; Notes: D S Lexic
; Pics: DSL
; Tape: Both
; Instruments: Compass # 873542, Clino # 923473, 30m fibron tape
; Calibration: at 161d
; A-&gt;B 214, -09
; B-&gt;A 035, +08
; ref.: 2000 KH survey book pp 21-26
; ====== stations refindable to link to other surveys: ======
;*export 0 ; 2nd bolt at head of new pitch
;*export 37 ; CM in Triassic Park II on L wall just past way to Wibble
; Tape was 20cm too short (snapped on first pitch on way down)-:
*calibrate tape +0.20
*calibrate clino -0.5
;From to Tape Compass Clino
0 1 16.35 007 -32
2 1 4.22 195 +03 ; legs from 1 to 13 are in Zipfer Rift
; etc.
36 37 3.12 037 -47
;station details
;name L R U D E details
;0 0 1.1 3.2 pitch ? 2nd bolt
;1 1.2 0.3 4.1 0.6 thread: start traverse line
; etc.
;36 0.2 0.2 1.0 2.5 in squeeze - widest point
;37 1.4 0.8 6.2 1.3 existing station in TP2
*end pt1
*begin pt2
; etc. for part two survey
*end pt2
*end Wibble
</pre>
<p>That lot would be typed by copying template/161.svx to
161/triassic/wibble.svx and then filling in the blanks and adding your data.
If you are linking to the rest of the survey then in the file
161/triassic/alltri.svx add the lines:
<pre>
; 2000 surveys:
*equate Wibble.pt1.37 Triassic.pt2.45
*include Wibble
</pre>
<p>If you are entering a surface survey, copy from template/surf.svx and
for underground survey other than Kaninchenh&ouml;hle, use template/ug.svx
Remember not to put surface data and underground data in the same file,
even if they are part of one continuous survey. You need to create two
files, with a defined station for the entrance, and a suitable equate in
the file which includes both surface stuff and underground stuff.
<p>Once you have your data typed in and checked, it must be run through the
survey software (which on expo will be
<a href="http://www.survex.com/">Survex</a>) and a
centre line printed, both for plan and for extended elevation. Measure the
print out to check that it really has printed at the scale you wanted
(typically 1:500), as this has sometimes caused problems in the past.
<p>Now see the "<a href="drawup.htm">Drawing it up</a>" page.
<hr>
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<img alt="&gt;" src="../../../icons/lists/0.png">
<b>Expedition Handbook</b>:<br>
<img alt="---&gt;" src="../../../icons/lists/1.png">
<b>Surveying</b>:<br>
<img alt="------&gt;" src="../../../icons/lists/2.png">
<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>
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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>
<img alt="------&gt;" src="../../../icons/lists/2.png">
Base Camp: <a href="drawup.htm">drawing it up</a>,
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