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< title > CUCC Expo Surveying Handbook: Drawing Up< / title >
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< h2 id = "tophead" > CUCC Expedition Handbook - New Survex file< / h2 >
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< h1 > Drawing up your survey< / h1 >
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< h2 > Great, I have discovered a new cave...< / h2 >
< p > If you have not come to this page from the sequence starting at < a href = "newcave.html" > Starting a New Cave"< / a > then go and read that first.
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< div style = "width:100%;height:50px;background:#C8E1E2" align = "center" >
This page outlines step 4 of the survey production process. Each step is documented separately.< br / >
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<!-- Yes we need some proper context - marking here, breadcrumb trails or something.
Maybe a colour scheme for just this sequence of pages
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< a href = "newcave.html" > 1< / a >
- < a href = "newwallet.html" > 2< / a >
- < a href = "newsurvex.html" > 3< / a >
- < a href = "drawup.htm" > 4< / a >
- < a href = "newrig.html" > 5< / a >
- < a href = "caveentry.html" > 6< / a >
- < a href = "cavedescription.html" > 7< / a >
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< h2 > Process< / h2 >
< p >
< h3 > Drawing up your survey< /h3
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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 = "/newwallet.html" > "Starting a new wallet"< / 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,
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 = "newsurvex.html" >
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survex format< / a > , run
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< a href = "https://survex.com/docs/manual/aven.htm" > aven< / a > (the GUI interface - installed when you installed survex) and print out a centre-line plan.
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< p > OK if this is your first time doing this, you need to go through the
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< a href = "newsurvex.html" > "How to use survex" training procedure< / a > .
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< h3 id = "runsurvex" > Running survex to create a centre-line< / h3 >
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< p > Seriously, go and follow all the rest of the links you skipped the first time in the < a href = "newsurvex.html" > "How to use survex" training procedure< / a > .
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< h3 id = "rescan" > Transcribing and re-scanning your sketches< / h3 >
< p > Use aven to print out the centre lines of the passages. Now you will have to decide whether to use Tunnel or Therion. Expo has a polciy decision on this: if it is an entirely new disconnected cave, then use Therion. If it is a passage in a cave where previously we used Tunnel, then use Tunnel. See also < a href = "/expofiles/tunnelwiki/wiki/pages/Other_Cave_Software.html" > Comparison of Tunnel to Other Cave Software< / a > .
< p >
< div class = "onright" >
< figure >
< a href = "/expofiles/tunnelwiki/wiki/pages/Tracing_the_Image.html" >
< img src = "sketch6.gif" > < / a >
< figcaption style = "font-variant-caps: small-caps;" >
< em > Tracing the image - click for tutorial< / em >
< / figcaption >
< / figure >
< / div >
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Take the printed centre lines on paper 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 >
< p > Now scan your sketch, transfer the file to the < em > expo laptop< / em > and open it in Tunnel (or Therion).
Using a mouse on the screen within Tunnel (or Therion), you will then trace over the image and thus create a vector drawing of the cave.
Very detailed instructions for doing this in Tunnel are in < a href = "/expofiles/tunnelwiki/wiki/pages/File_Formats.html#Raw_Sketch_Data" > Tunnel Wiki: Raw Sketch Data< / a >
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< h3 id = "filescans" > Filing your sketches< / h3 >
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< p > The files of your scanned and re-scanned sketches should be stored in the same folder
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as the scanned notes, i.e. (for wallet #19, for expo 2018) you would upload them to folder
< a href = "/scanupload/2018:19" > 2018#19< / a > .
This is actually stored in:
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< tt >
/home/expo/expofiles/surveyscans/2018/2018#19/
< / tt >
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but you don't need to know that as the Upload Scan form just uses the wallet name
< a href = "/scanupload/2018:19" > 2018#19< / a >
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(but this is not where you will put your finished Tunnel or Therion vector files.)
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< h3 id = "therion" > Using tunnel or therion for final survey production< / h3 >
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< ul >
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< li > < a href = "/expofiles/documents/surveying/Tunnel_Guide.pdf" > How to use Tunnel< / a > - PDF - Brendan's guide.
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< li > < a href = "/expofiles/documents/surveying/tunnel-loefflerCP35-only.pdf" > Guide to using Tunnel< / a > - PDF - David Loeffler's documentation.
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< li > < a href = "/expofiles/tunnelwiki/wiki/pages/Tunnel.html#Tutorial" > Tunnel tutorial< / a > - an advanced tutorial with many examples
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< / ul >
< p > Tunnel only produces plan surveys, but they are very pretty.
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< p > The tunnel (or therion) vector files should NOT stored in the same folder as the scanned notes. You will upload
them to the version-controlled repository
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< var > < a href = "../computing/repos.html" > drawings< / a > < / var >
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using the < a href = "/dwgupload/" > Upload Drawings< / a > form. You will put them in < a href = "/dwgupload/uploads" > the Uploads Folder< / a > . You can create your new subfolders there by typing them in to the browser address bar, e.g. < a href = "/dwgupload/uploads/my_new_subfolder" > my new subfolder< / a >
< p > If you are working on the < em > expo laptop< / em > then put them in < var > /home/expo/drawings/{cavenumber}< / var > .
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Look at what is in there already and ask someone which directory to put them in. It will probably be a folder like this:
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< tt >
/home/expo/drawings/264-and-258/toimport/
< / tt >
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< h3 > Preparing input into to Tunnel or Therion< / h3 >
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< 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
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needed ? If a dig, is it a few loose boulders or a crawl over mud?)< / p >
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< h3 > Archaic: hand-drawing the final survey< / h3 >
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< p > The actual published cave-survey is produced by software these days.
These notes come from a different age but reading them will make your tunneling better
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and more polished:
< div style = "margin-left: 3em; margin-right: 4em" > < em >
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< p > Drawing a cave entirely by hand is not easy but anyone can learn to do it.
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Read the brief < a href = "/expofiles/documents/surveying/XI-2-11.pdf" > Cave Mapping - Sketching the Detail"< / a >
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5-page llustrated guide by Ken Grimes which makes everything clear.
For preliminary exploration (Grade 1 surveys) this is still appropriate.
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< 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
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< a href = "http://www.chaos.org.uk/survex/cp/CP14/CPoint14.htm" > Hä uselmann,
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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
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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
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
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projected elevations may be useful in addition to the extended section. But
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
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
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
experience: it's now late April 2004, and the 204 survey is only just
approaching completion. This shows how easy it is for these things to go wrong.
The chief problems were a change of software and the fact that the Expo printer
broke down last summer, so a number of surveys never got drawn up. -->
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< / em > < / div >
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< hr / >
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< p > Back to the previous page in this sequence < a href = "newsurvex.html" > Starting a new survex file< / a > .
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< br / > Now go the the next page in this sequence < a href = "newrig.html" > Creating a new rigging guide"< / a > .
< hr / >
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