Tall Buildings in Strong Winds
Tall Buildings in Strong Winds
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Discussion

blueg33

Original Poster:

42,362 posts

241 months

Tuesday 3rd January 2012
quotequote all
Currently in my hotel room on the 22 floor of the Beetham Tower in Manchester. Its quite blowy outside and the room is creaking like at ship at sea and I can actually feel it move. Lord knows what its like at the top!

I have been in taller buildings that sway, but am surprised at the movement 22 floors up.

Who else is swaying in the wind?


Edited by blueg33 on Tuesday 3rd January 21:25

Speed addicted

6,021 posts

244 months

Tuesday 3rd January 2012
quotequote all
Offshore on a fixed platform and it's a little bumpy. It sways in the wind and when really big waves hit you get a boom and it all moves.
Slightly worrying sometimes.

mfmman

3,042 posts

200 months

Tuesday 3rd January 2012
quotequote all
A few years ago I went up the tower at Emley Moor. Hanging from the ceiling in the Tower room (at 900ft) is a steel weight (like a paperweight) suspended on a bit of wire. It was a bit blowy when I was there and it was swinging back and forth a few inches.......

Except, of course the weight is stationary and the tower is bending about in the wind





jason s4

16,810 posts

187 months

Some Gump

12,998 posts

203 months

Tuesday 3rd January 2012
quotequote all
blueg33 said:
Lord knows what its like at the top!
Shaky, and close to bankrupcy =)

FisiP1

1,279 posts

170 months

Tuesday 3rd January 2012
quotequote all
Eiffel tower is pretty bad for this.

blueg33

Original Poster:

42,362 posts

241 months

Tuesday 3rd January 2012
quotequote all
Speed addicted said:
Offshore on a fixed platform and it's a little bumpy. It sways in the wind and when really big waves hit you get a boom and it all moves.
Slightly worrying sometimes.
Now that does sound scary!

anonymous-user

71 months

Tuesday 3rd January 2012
quotequote all
You need a little bit of flex in a structure to stop it just cracking/snapping.

At 22 storeys, even a tiny amount of 'flex' per storey can ammount to tens of milimetres that far up.

Did you know that timber floor joists in domestic dwellings can be designed to have up to around 12 mm of deflection when loaded.

blueg33

Original Poster:

42,362 posts

241 months

Tuesday 3rd January 2012
quotequote all
Skodasupercar said:
You need a little bit of flex in a structure to stop it just cracking/snapping.

At 22 storeys, even a tiny amount of 'flex' per storey can ammount to tens of milimetres that far up.

Did you know that timber floor joists in domestic dwellings can be designed to have up to around 12 mm of deflection when loaded.
I did know the last bit (20 years as a housebuilder)

Aviz

1,669 posts

186 months

Tuesday 3rd January 2012
quotequote all
blueg33 said:
Currently in my hotel room on the 22 floor of the Beetham Tower in Manchester. Its quite blowy outside and the room is creaking like at ship at sea and I can actually feel it move. Lord knows what its like at the top!

I have been in taller buildings that sway, but am surprised at the movement 22 floors up.

Who else is swaying in the wind?


Edited by blueg33 on Tuesday 3rd January 21:25
Can you not hear it howling ? It's been noisy as fck all day !

http://m.youtube.com/index?desktop_uri=%2Fmobile&a...

ATTAK Z

15,854 posts

206 months

Tuesday 3rd January 2012
quotequote all
Skodasupercar said:
You need a little bit of flex in a structure to stop it just cracking/snapping.

At 22 storeys, even a tiny amount of 'flex' per storey can ammount to tens of milimetres that far up.

Did you know that timber floor joists in domestic dwellings can be designed to have up to around 12 mm of deflection when loaded.
14mm IIRC

Dog Star

17,051 posts

185 months

Tuesday 3rd January 2012
quotequote all
My last job was in a (newish) 5 storey building in Leeds (CityWalk) and I remember even on the 4th floor feeling alarming movement - and the lift banging in the shaft yikes it could get very very windy round there.

(you read that right, btw: 4th floor)

anonymous-user

71 months

Tuesday 3rd January 2012
quotequote all
Is that to BS 5268 or Eurocode 5? smile

You might be right about the 14 mm actually, but I think it is to a max of 12 mm to EC5 depending on span. Anyway, it is quite a lot!

Buildings in earthquake prone areas are now designed to flex and sway to stop them just falling apart.

ATTAK Z

15,854 posts

206 months

Tuesday 3rd January 2012
quotequote all
Skodasupercar said:
Is that to BS 5268 or Eurocode 5? smile

You might be right about the 14 mm actually, but I think it is to a max of 12 mm to EC5 depending on span. Anyway, it is quite a lot!

Buildings in earthquake prone areas are now designed to flex and sway to stop them just falling apart.
I'm old school ... BS 5268

mxspyder

1,071 posts

182 months

Tuesday 3rd January 2012
quotequote all
ATTAK Z said:
Skodasupercar said:
You need a little bit of flex in a structure to stop it just cracking/snapping.

At 22 storeys, even a tiny amount of 'flex' per storey can ammount to tens of milimetres that far up.

Did you know that timber floor joists in domestic dwellings can be designed to have up to around 12 mm of deflection when loaded.
14mm IIRC
Nope, Eurodes are favorable towards timber construction and give guidance of 1/200xSpan

blueg33

Original Poster:

42,362 posts

241 months

Tuesday 3rd January 2012
quotequote all
Aviz said:
Can you not hear it howling ? It's been noisy as fck all day !

http://m.youtube.com/index?desktop_uri=%2Fmobile&a...
Nowhere near as loud as it was at home this morning

pacman1

7,323 posts

210 months

Tuesday 3rd January 2012
quotequote all
blueg33 said:
Who else is swaying in the wind?
Just got back from the pub, half way through a bottle of port and stood outside having a smoke.

Guess that'll be me then. Hic. drunk


ATTAK Z

15,854 posts

206 months

Tuesday 3rd January 2012
quotequote all
blueg33 said:
Who else is swaying in the wind?
Bob Dylan ?

Allyc85

7,225 posts

203 months

Tuesday 3rd January 2012
quotequote all
https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-as...

hehe

Edited by Justayellowbadge on Wednesday 4th January 09:19

andy-xr

13,204 posts

221 months

Tuesday 3rd January 2012
quotequote all
Aviz said:
Can you not hear it howling ? It's been noisy as fck all day !
WHAT? NOT HEARD A THING ALL DAY??