Tag Archives: waterways

Power to the people

So you’re out in your sailing-boat, heading for Portumna, and you see that there’s an electricity cable crossing the waterway ahead of you, just downstream of the bridge. You think you’ll fit under it but it would be nice to know the clearance ….

Electricity is ESB, isn’t it? Well, perhaps not: it could be ESB Networks, which seems to mean distribution, or EirGrid, which means transmission. It could also be one of the other companies that sells volts, but I don’t think they run big wires.

Half an hour of searching the websites of the three bodies failed to produce anything about the heights of pylons or cables or overhead powerlines. Safety advice said not to go near them, but that’s what you are trying to do: it would help to know how near is near. Another half an hour of general googling; still no result.

So, as it’s a smallish line on wooden poles, rather than a large one on very tall steel pylons, you guess that it might be distribution rather than transmission, and thus ESB Networks rather than EirGrid.

I rang; someone will ring back within 48 working hours. The quest continues ….

What is the magic combination of search terms that will find the heights above water of all power lines over Irish waterways?

Drum on the Lagan

I was introduced to two places on the Lagan Navigation last weekend. The first was Drum Bridge; here is a page about it.

Skew arch bridges

The IHAI AGM at the weekend, in Newtownabbey Borough Council’s splendidly restored Mossley Mill,  included a tour of the premises and its museum. Then Professor Adrian Long of Queen’s University Belfast gave a short talk about the FlexiArch bridge, which his team have been developing since the 1990s.

Professor Adrian Long with a wooden model of the FlexiArch bridge

He said that their work started by asking why nobody built arched bridges any more; they developed a system that used pre-cast voussoirs (the wedge-shaped blocks) linked by a polymeric flexible membrane. The voussoirs for any bridge are cast to give the correct taper for the span and rise required for that bridge.

Arch rings arrive on site stowed flat on the back of a truck; when they are lifted off, they fall into the correct shape and are lowered into position on previously-installed footings. Each arch ring is 1m wide; several of them can be placed side by side to give whatever width is required. The end walls are added and the structure is filled and given the appropriate surface (eg tarmac).

FlexiArch is manufactured by Macrete of Toomebridge (beside Lough Neagh); their website shows several examples of installation including one at a name familiar on Irish waterways. There is a brochure [PDF] and there is a video showing the installation of a 15-metre bridge.

Wooden model as a skew arch

No, I haven’t any shares in it. I just thought it was interesting, for three reasons: first, the speed of construction is very impressive; second, there is a link to Lough Neagh; third, it might encourage the construction of more skew arch bridges over canals.

 

Dry docks

GRAND CANAL

At a Meeting of the Company of Undertakers of the Grand Canal, duly convened by public Advertisement, and held at the Company’s House in Dublin, on Monday, the 6th day of April, 1840,

WILLIAM MURPHY, Esq., in the chair,

The following Resolution, moved by James Pim, jun., Esq., seconded by James Dawson, Esq., passed unanimously in the afformative: —

Resolved — That the Court of Directors of this Company be authorised, if they shall see fit, to call the attention of the Government, of the Chamber of Commerce, of the Ballast Corporation, of the several Steam Companies, and of Capitalists generally, to the important advantages which the Grand Canal Company’s Floating and Graving Docks at Ringsend offer to all parties connected with the Shipping interests of the Port of Dublin, and to apprize them that this Company will at all times be ready to entertain any well considered proposition for increasing the general usefulness of these Docks, on the fairest and most liberal terms as regards the Public. Under the firm persuasion that by whatever well-arranged proceeding this important portion of the Company’s property can be best made available in increasing the Trade and promoting the prosperity of the City of Dublin, it will be rendered the most effectually conducive to the interests of the Company.

By order, JOHN McMULLEN,
Secretary of the Company.

From The Freeman’s Journal 8 April 1840.

Perhaps Waterways Ireland might follow the example of its predecessors and, rather than getting into bed with the DDDA, might consider some “well considered proposition for increasing the general usefulness of these Docks”.

 

The sluice house at Lough Owel …

… has had its windows broken. More on the Lough Owel Feeder here.

Willie Leech and the Royal trade

I have uploaded an old article of mine based on an interview with Willie Leech of Killucan, whose father ran the last trading boats on the Royal Canal.

More on Mineral Oil Tax

I showed here that very few boat-owners paid the Mineral Oil Tax for 2009 (38) and 2010 (41). I now have the figures for 2011 (MOT paid by 1 March 2012) and I can report that there has been a very significant change, of 46%, in the numbers paying the tax.

Unfortunately the change was downwards, from 41 to 22. The Revenue Commissioners tell me that

[…] there were 22 returns received by 1 March 2012 for 2011, amounting to €53,398.58 MOT [Mineral Oil Tax] on 141,503.29 litres oil.

That’s an average of 6432.1 litres each, which is a lot; I suspect that much of the total came from the hire fleet, with less than twenty private owners making returns.

This ridiculous tax should be scrapped; those operating private pleasure craft should be required to use non-rebated diesel.

 

 

Mirabile dictu …

… it’s raining.

Snug in Mountshannon

For many years Molly enlivened the Sunday market at Killaloe with her mini-pizzas, breads, chocolate biscuits and other delights — and her good humour. Then, she says, she realised that if she could sell cold pizza in the rain in Killaloe, she could sell hot pizza from the pizza oven, indoors, in Mountshannon. She is now running the Snug restaurant in Mountshannon and has a Facebook page and a website. Hot wings followed by a pizza? I’ll be there ….

Royal water

Here is a page about feeders to the Royal Canal. My confidence in the accuracy of this list is low, so comments would be welcome.