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TOPIC: actual and real height( PDF)of the main lowest bridges > canal du midi

actual and real height( PDF)of the main lowest bridges > canal du midi 16 Jul 2018 20:10 #99837

Well... as with all graphic presentations that use interpolated data between actal data points, this is an indication of fit and nothing more. I turned off the data points on the bridges as it made the chart too noisy IMHO, but those are the only points that are known (or thought) to be accurate. Between them, the software just provides a smooth curve.

My thought was - and I should have posted it, I guess - that if your profile shows as well clear, proceed with caution. If it even resembles a close fit onthe chart, then REALLY proceed with caution and verify the dimensions.

-Rob
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actual and real height( PDF)of the main lowest bridges > canal du midi 16 Jul 2018 19:55 #99836

Hi Robert, Good idea.
Not sure why, but, I get a very low 128mm clearance through Voltaire.

On yours it looks like we cant go through. I haven't checked my measurements as we aren't going to Narbonne.

regards
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Kendra Erin 20m Luxmotor Replica Dutch Barge

actual and real height( PDF)of the main lowest bridges > canal du midi 16 Jul 2018 19:12 #99835

Hmmm... I'll let you guess whether I meant to type "first post" or "worst post"

After trying to put in the exact dimensions for Kevin's barge, I made an upgraded version 3. See attachment.
Changelog:
-The barge profile now has hard corners instead of smoothed lines.
-You can enter exact dimensions off centerline for your measurements

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actual and real height( PDF)of the main lowest bridges > canal du midi 16 Jul 2018 18:48 #99834

Hello all,

I'm excited to present my very forst contribution to the Forum. I took the PDF provided by Bob Marsland and converted it to an interactive .XLSX file with a graphical representation of the bridge openings and added a space where you can add your barge's dimensions to see how she fits.

The chart is the first tab. Enter your data in the yellow cells on the tab named "plus-minus". That tab is protected to prevent accidental deletion of formulas, but there's no password on the protection.

Please note that I used "smoothed lines" for the graph, so sharp edges on your boat will not show. I think smoothed lines is more appropriate for the parabolas typically used for bridges. Feel free to upgrade the file ...

[EDIT] I had to convert to old excel format (XLS) to post. I *think* all the features work but don't have time for testing. Please alert me if it is broken.



Hope this helps.

-Rob

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actual and real height( PDF)of the main lowest bridges > canal du midi 09 Jun 2018 15:32 #99291

Ian McCauley wrote: Thanks Kevin, we're collecting data for our marginal, very fixed wheelhouse.

Kevin Bond wrote: We have an air-draft of 3150 and 3000 on sides of wheelhouse.


And, critically, what is the exact width of Kendra Erin's wheelhouse?

600mm Gunnels width wheel house 2440mm 3800mm total width. With these numbers we should be able to all the way through. Although may need some grease at Marengo. ;)

regards
Kevin

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Kendra Erin 20m Luxmotor Replica Dutch Barge

actual and real height( PDF)of the main lowest bridges > canal du midi 09 Jun 2018 10:21 #99286

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Thanks Kevin, we're collecting data for our marginal, very fixed wheelhouse.

Kevin Bond wrote: We have an air-draft of 3150 and 3000 on sides of wheelhouse.


And, critically, what is the exact width of Kendra Erin's wheelhouse?

Ian

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actual and real height( PDF)of the main lowest bridges > canal du midi 09 Jun 2018 09:09 #99283

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Hi Bob, a cold shower was welcome on these hot days here ;-)
I realize that figures, numbers are, what there are.
So I have for all providence buy 6 strong big bags of 1500l each from the Netherlands. these can be done thanks to a plastic incite the bag.
of course you can only fill them for max ⅓, otherwise they fall over., and/or becomes to heavyweight.

I have done a test set up on the aisles and there each placed a bag, attached to it a sturdy rope and placed over the roof to the other bag, so they keep each other a little judge and do not fall over.

I will and must go through, if necessary with these means, have no other choice (up to max Capestang)

The deck is in steel as well as the walls, the railing is extra heavy and can also handle this task. The boat will not drop very much, but I hope.

In front I have 2 cranes that I suggest on the height and width of the wheelhouse ...

I'll let you know for sure how it ended and whether I had to use the tools. o yes, let the bildges fill up thatshelp also a bit ...

Still, thanks for all help and tips!!!

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actual and real height( PDF)of the main lowest bridges > canal du midi 09 Jun 2018 08:25 #99281

Steve,

I hate to pour cold water over your happiness but my reading of the specs for the Pont Vieux de Vias suggests you would not get through. Unless I am mistaken, you have quoted your air draft to be 3.25m with a fixed wheelhouse width of 4m (3.98m to be precise). The table the VNF produced for you quotes the height in the centre of the bridge to be 3.42m but at two metres either side of the centre line (4.0m vessel width at this height) to be only 3.08m.

Kevin's information from VNF is more optimistic showing the height on the axe to be 3.6m and at 2.75m either side of the axe (5.50m vessel width at this height) to be 3.08. You would have to extraplolate to get the height at 2m either side of the axe.
These measurements are all from the waterline which, of course can vary slightly.

Steve, if you email me your exact dimensions (measure your air-draft) using a piece of string so you know without doubt plus width of wheelhouse and width of your barge. How wide the gunnels are and then WH. As Bob says this is very important.
I have a CAD program and can draw them up. We have an air-draft of 3150 and 3000 on sides of wheelhouse. There hasn't been any issues so far, except the bridge near the lock at Villeneuve les Beziers was tight. We leave Beziers today on paper we wont need to dismantle the wheel house. I've drawn most of the low bridges some we only have 150mm clearance. So water level is critical.
regards
Kevin
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Kendra Erin 20m Luxmotor Replica Dutch Barge

actual and real height( PDF)of the main lowest bridges > canal du midi 09 Jun 2018 01:46 #99278

Steve Van de Pas wrote: I have obtained this scheme (PDF) from the VNF itself. it is the exact passage height of the main lowest bridges in the first part of the Canal du midi.
and yes, I can just pass (4CM) under the low bridge of VIAS.

Continue through Capestang, is for me not possible, I know that before.

So, I am a happy man now...

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Steve,

I hate to pour cold water over your happiness but my reading of the specs for the Pont Vieux de Vias suggests you would not get through. Unless I am mistaken, you have quoted your air draft to be 3.25m with a fixed wheelhouse width of 4m (3.98m to be precise). The table the VNF produced for you quotes the height in the centre of the bridge to be 3.42m but at two metres either side of the centre line (4.0m vessel width at this height) to be only 3.08m.

Kevin's information from VNF is more optimistic showing the height on the axe to be 3.6m and at 2.75m either side of the axe (5.50m vessel width at this height) to be 3.08. You would have to extraplolate to get the height at 2m either side of the axe.

These measurements are all from the waterline which, of course can vary slightly.

Bob

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Bob & Bobbie Marsland
MS La Chouette

actual and real height( PDF)of the main lowest bridges > canal du midi 07 Jun 2018 17:36 #99247

You will now find Steve's table of Midi bridge dimensions, in French and English, in the Library National Info section .

This may be a one-off by the Languedoc Est subdivision, as so many people ask about the C. du Midi bridges. Note these are not ALL the bridges, just the most restrictive and there is a warning that the heights shown may vary by a few cm if the water level is abnormal.

Pete
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actual and real height( PDF)of the main lowest bridges > canal du midi 07 Jun 2018 11:24 #99235

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Tim Hackett wrote: Is this info available for other (or all) French canals?


I think so (almost certain), but you have to ask/tel to the SUB devision VNF, for that’s aria you want to visit

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actual and real height( PDF)of the main lowest bridges > canal du midi 07 Jun 2018 10:15 #99230

Is this info available for other (or all) French canals?

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Tim & Jo Hackett plus moggie
Maria of Zaandam

Dutch Barges are only built in the Netherlands. Anywhere else is something else.

Our rivets are real not fake!

actual and real height( PDF)of the main lowest bridges > canal du midi 06 Jun 2018 19:00 #99216

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Peter Cawson wrote: >

I thought your web browser did that for you! ;-)


That’s the reason why my English has improved, also thanks google translation ;-)

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actual and real height( PDF)of the main lowest bridges > canal du midi 06 Jun 2018 18:57 #99214

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Kevin Bond wrote: Thank you Steve,
It doesn't say where the Axe height is from? I assume the towpath? It would be good if it was from maximum water height.
Pont de l'ecluse de Villeneuve should also be on there as it was tight. We have also heard that Morengo is very low and its not on there.

Voltaire is on the canal robine heading to Narbonne.

Vias isnt a problem, if you mean the bridge with the three aches which is closer to PK230


on my question which bridges are the lowest for me until Béziers, the VNF has looked up by telephone and then I have this PDF delivered, this Schow and would be the lowest bridges,.

I also know of the bridge of Villeneuve she is also very low, but apparently this is slightly higher I pull extra ballast, just done with painting ...

pont Morengo is idd this in Carcasonne, is commonly known as a very very low railway bridge but I can not get that far ...

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actual and real height( PDF)of the main lowest bridges > canal du midi 06 Jun 2018 18:53 #99213

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> I might even translate it for Mr Cawson!

I thought your web browser did that for you! ;-)

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actual and real height( PDF)of the main lowest bridges > canal du midi 06 Jun 2018 18:27 #99211

Thank you Steve,
It doesn't say where the Axe height is from? I assume the towpath? It would be good if it was from maximum water height.
Pont de l'ecluse de Villeneuve should also be on there as it was tight. We have also heard that Morengo is very low and its not on there.

Voltaire is on the canal robine heading to Narbonne.

Vias isnt a problem, if you mean the bridge with the three aches which is closer to PK230

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Kendra Erin 20m Luxmotor Replica Dutch Barge

actual and real height( PDF)of the main lowest bridges > canal du midi 06 Jun 2018 16:35 #99210

Ian McCauley wrote: KB editor - Hi Pete! - could this go in the bridges section along with the other low bridge schematics so that this bit of information is readily accessible?

Indeed it could. Members have been looking for this for years. I might even translate it for Mr Cawson!

Pete

PS It is better to email stuff like this to This email address is being protected from spambots. You need JavaScript enabled to view it.. to be sure it isn't missed. He doesn't necessarily get to read every post on the Forum.

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actual and real height( PDF)of the main lowest bridges > canal du midi 06 Jun 2018 12:54 #99207

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> KB editor - Hi Pete! - could this go in the bridges section along with the other low bridge schematics so that this bit of information is readily accessible?

And perhaps before it's put into the KB, it would be good to have it translated, or notes added in English. Some of these bridges are not on the Midi itself, eg Voltaire.

Peter

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actual and real height( PDF)of the main lowest bridges > canal du midi 06 Jun 2018 12:45 #99206

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Ian McCauley wrote: ... and can Steve or someone familiar with the area tell me if the 'Pont vieux VIAS' is the bridge at Carcassonne?

Ian

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Catharina Elisabeth



No no, Vias is the other site near (étang de étau) and cap d’ Agde !
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actual and real height( PDF)of the main lowest bridges > canal du midi 06 Jun 2018 12:36 #99205

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... and can Steve or someone familiar with the area tell me if the 'Pont vieux VIAS' is the bridge at Carcassonne?

Ian

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Catharina Elisabeth

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