Duxford Storm Damage

Discuss all things 'aviation' that do not fit into a more appropriate forum
Aquarious
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Re: Duxford Storm Damage

Post by Aquarious »

I have no doubt that the architects and engineers involved designed to modern building standards as required. The building wouldn't have been approved otherwise. You may question whether the standards are appropriate to withstand say a nuclear explosion to avoid any claims. :wink:

ZRX61
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Re: Duxford Storm Damage

Post by ZRX61 »

This is how it was worded on a report that I saw:

"The motorway is closed near Duxford - due to fears, an aircraft hangar at Duxford Airfield is about to blow off."...

:butt:

Amp
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Re: Duxford Storm Damage

Post by Amp »

Roobarb has echoed my own thoughts. This shiny 'new' megabucks hangar suffered wind damage a few years, now the same again. Those 'old' hangars stand there quietly taking it all in their stride.
Said as an armchair observer with zero building knowledge and accepting there may be a degree of "Trigger's broom" in the older hangars... :-)

WebPilot
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Re: Duxford Storm Damage

Post by WebPilot »

Negligence can be tough to prove in some cases, in others it’s often clear cut. Duxford would be bang to rights with a roof threatening to breakup in storm conditions and not doing what needed to derisk

ozplane
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Re: Duxford Storm Damage

Post by ozplane »

A long time since I did my civil engineering but I have a theory about the cladding's departure. The roof profile resembles a wing cross-section and with the wind in the SSW the airflow over the roof could make the roof act as a "wing" and thus generate a lift force that the attachments aren't designed to withstand. I believe we have had very strong Easterlies and Northerlies in the last few years and that doesn't seem to have had the same effect so it's the SSWesterlies that do it. Just saying.

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BobL
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Location: Holding pattern north of Duxford

Re: Duxford Storm Damage

Post by BobL »

The roof curve of the building doesn't face the SW - it is the flat end of the building that faces the SSW.

I suspect it is the 3-4m overhang which extends around 95% of the end of the hangar that is the problem - it is the roofing panels above the overhang that seem to become weakened and detached first (2014 storm damage was in this area).

2014 wind damage -
Image
https://www.bbc.co.uk/news/uk-england-25574239
Underneath my gruff exterior is an even gruffer interior...

Stagger2
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Re: Duxford Storm Damage

Post by Stagger2 »

I agree with you 'BobL', but the principles outlined by 'ozplane' still hold good for the gable over-sail (flat end) you described. The winds hitting below this overhang section are initially disturbed by the baffle effect of the exposed first Roof Lattice Truss & then almost immediately slowed by the solid gable wall. (see photo in Post 6 of this Topic).
Meanwhile, the winds passing above this overhang maintain a greater velocity by comparison & create a low-pressure zone, thus potential uplift! Add into the equation gusting & the vortex effect occurring both above & below the overhang to produce flexing in this section of the roof & you have a situation where all Fixings & Fasteners can become loosened after repeated cycles.
In these times of increasing high-wind events it's a problem that evidently isn't going to go away. A good start would be double the number of roof-sheet fixings & explore a new gable-edge profile to mitigate against uplift forces. Time to bring in "DIY SOS" ? :wink:

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Pen Pusher
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Re: Duxford Storm Damage

Post by Pen Pusher »

Storm Dennis is due this Saturday with 50+mph winds

From the MET Office
A yellow wind warning has been issued for much of England and Wales on Saturday, and further warnings could follow.
The weather warning on Saturday will come into force at midday and run until 23:59 GMT.
Wind gusts will widely exceed 50mph but could reach over 60mph in exposed areas.


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BobL
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Joined: Sat 02 Nov 2019, 2:09 pm
Location: Holding pattern north of Duxford

Re: Duxford Storm Damage

Post by BobL »

Stagger2 wrote:I agree with you 'BobL', but the principles outlined by 'ozplane' still hold good for the gable over-sail (flat end) you described.


Having read your theory and looked back at ozplane's post again I think I see what he was saying - it is that 3-4m overhang acting as a wing and not the cross profile of the building (as I thought he meant?).

I imagine the lifting forces exerted onto that overhang as the gales blew across the airfield would be quite high...

Can DIY SOS fit wind spoilers? :lol:

And, there is another storm en route...
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UKTopgun
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Re: Duxford Storm Damage

Post by UKTopgun »

Storm Dennis, a proper good old fashioned name for a storm, and easy to pronounce too.

Stagger2
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Re: Duxford Storm Damage

Post by Stagger2 »

Quote:- "Can DIY SOS fit wind spoilers? :lol: "....Hopefully, as I think they're the only people that could get it done before 'Dennis the Menace' gets here at the weekend! :whistle:

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Southendnick
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Re: Duxford Storm Damage

Post by Southendnick »

UKTopgun wrote:Storm Dennis, a proper good old fashioned name for a storm, and easy to pronounce too.


Storm Damion would be a good name.
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