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New Stadium Details And Discussions

The Scarecrow

Well-Known Member
Jan 17, 2013
5,602
12,224
Probably a stupid question but I'll ask, anyway. Why are the first two tiers made of concrete and the third of meccano? Is there a varying trade-off between stability and weight at different heights in a superstructure, or is there some other reason?
I'm hardly an expert, but i have some background in structural engineering, so I'll give you my take on it.

The most basic thing is stability. If you stack coins, you want the heavier coins at the bottom and the lighter at the top.

Secondly, there's a difference between compressive and tensile stress. My assumption is that there's a higher share of compressive stress at the bottom than at the top, and concrete has an incredible compressive capacity. Its tensile strength, on the other hand, is next to nothing, which is why reinforcements are needed.

Now reinforced concrete is, generally speaking, the best, cheapest and most applicable construction material there is. That's why it's so widely used. But it's also very heavy, which means that the dead load from the concrete contributes a lot to the total load on the structure. So if there's a high share of tensile loads in a part of the construction, the use of concrete might actually make things worse. This is why you rarely see concrete in cantilever beams that support a roof. Steel, on the other hand, is equally strong both ways.

Thirdly, there's the cost point of view. You basically want a construction to be as close to its capacity as possible. The loads go all the way from the top, through the construction and down to the foundation, so quite simply the loads will be higher at the bottom than at the top. Which means two things:

1. You want to reduce the cumulative loads at the bottom as much as possible.
2. The upper part of the construction can be weaker than the bottom.

Based on that, it makes a lot of sense to have a heavier, more solid construction at the bottom, and a lighter construction at the top.
 

Graysonti

Well-Known Member
May 8, 2011
3,904
5,823
I'm hardly an expert, but i have some background in structural engineering, so I'll give you my take on it.

The most basic thing is stability. If you stack coins, you want the heavier coins at the bottom and the lighter at the top.

Secondly, there's a difference between compressive and tensile stress. My assumption is that there's a higher share of compressive stress at the bottom than at the top, and concrete has an incredible compressive capacity. Its tensile strength, on the other hand, is next to nothing, which is why reinforcements are needed.

Now reinforced concrete is, generally speaking, the best, cheapest and most applicable construction material there is. That's why it's so widely used. But it's also very heavy, which means that the dead load from the concrete contributes a lot to the total load on the structure. So if there's a high share of tensile loads in a part of the construction, the use of concrete might actually make things worse. This is why you rarely see concrete in cantilever beams that support a roof. Steel, on the other hand, is equally strong both ways.

Thirdly, there's the cost point of view. You basically want a construction to be as close to its capacity as possible. The loads go all the way from the top, through the construction and down to the foundation, so quite simply the loads will be higher at the bottom than at the top. Which means two things:

1. You want to reduce the cumulative loads at the bottom as much as possible.
2. The upper part of the construction can be weaker than the bottom.

Based on that, it makes a lot of sense to have a heavier, more solid construction at the bottom, and a lighter construction at the top.

There's always one smart arse ;-)
 

tottenmal

Well-Known Member
Aug 22, 2013
801
2,082
Looks like the stadium is curving in too soon. Surely its longer than that?

I'm not sure how you mean, but the pitch area around where the north stand is, so there isn't much length
DfzUibe.jpg
really left. This picture gives a good idea of how it will look.
 

TottenhamMattSpur

Well-Known Member
Aug 31, 2012
10,925
16,007
I'm hardly an expert, but i have some background in structural engineering, so I'll give you my take on it.

The most basic thing is stability. If you stack coins, you want the heavier coins at the bottom and the lighter at the top.

Secondly, there's a difference between compressive and tensile stress. My assumption is that there's a higher share of compressive stress at the bottom than at the top, and concrete has an incredible compressive capacity. Its tensile strength, on the other hand, is next to nothing, which is why reinforcements are needed.

Now reinforced concrete is, generally speaking, the best, cheapest and most applicable construction material there is. That's why it's so widely used. But it's also very heavy, which means that the dead load from the concrete contributes a lot to the total load on the structure. So if there's a high share of tensile loads in a part of the construction, the use of concrete might actually make things worse. This is why you rarely see concrete in cantilever beams that support a roof. Steel, on the other hand, is equally strong both ways.

Thirdly, there's the cost point of view. You basically want a construction to be as close to its capacity as possible. The loads go all the way from the top, through the construction and down to the foundation, so quite simply the loads will be higher at the bottom than at the top. Which means two things:

1. You want to reduce the cumulative loads at the bottom as much as possible.
2. The upper part of the construction can be weaker than the bottom.

Based on that, it makes a lot of sense to have a heavier, more solid construction at the bottom, and a lighter construction at the top.

I've no doubt at all that any of this is either incorrect nor totally applicable to our build.
I also have a feeling it's got something to do with the open design of the stadium whereby you can see right through from the outside onto the pitch?
Massive chunks of concrete would spoil that.
 

Spurger King

can't smile without glue
Jul 22, 2008
43,881
95,149
I have been thinking the same for some time now

I think it's a visual illusion caused by the HQ building. The HQ is aligned with the road, so not perfectly straight with the stadium. It doesn't face it head on, but slightly askew. Not something noticeable at ground level, but stands out from above.

Also worth remembering that the curvature of that end of the stadium is slightly different to accommodate the slide-in pitch.
 

Roynie

Well-Known Member
Oct 2, 2007
3,116
3,882
I think it's a visual illusion caused by the HQ building. The HQ is aligned with the road, so not perfectly straight with the stadium. It doesn't face it head on, but slightly askew. Not something noticeable at ground level, but stands out from above.

Also worth remembering that the curvature of that end of the stadium is slightly different to accommodate the slide-in pitch.

IIRC the plan is to have the south stand closer to the pitch than the other 3 stands to help raise the atmosphere.
 

dovahkiin

Damn you're ugly !
May 18, 2012
3,349
89,343
justspurs on coys:
Few snippets following VR tour.

  • They have sold 92 of the 104 Tunnel Club memberships at an eye watering £50k for 2 seats in year 1. Then £20k per season.
  • The best premium seats on half way line are pretty much sold out but plenty available at the £5k per seat category.
  • They confirmed that the highest point of stadium roof will be just under the cabs of the cranes.
  • Roof will only be erected 3-4 months before completion.
  • Fit out commences shortly
  • They hope to offer hard hat tours next season and have recently installed an internal viewing platform


ps The stadium is going to be unbelievable.
 

Spurger King

can't smile without glue
Jul 22, 2008
43,881
95,149
justspurs on coys:
Few snippets following VR tour.

  • They have sold 92 of the 104 Tunnel Club memberships at an eye watering £50k for 2 seats in year 1. Then £20k per season.
  • The best premium seats on half way line are pretty much sold out but plenty available at the £5k per seat category.
  • They confirmed that the highest point of stadium roof will be just under the cabs of the cranes.
  • Roof will only be erected 3-4 months before completion.
  • Fit out commences shortly
  • They hope to offer hard hat tours next season and have recently installed an internal viewing platform


ps The stadium is going to be unbelievable.

I find the whole idea of Tunnel Club weird and creepy, and the prices sickening.
 

Goldman

Well-Known Member
Jul 14, 2004
7,097
2,150
I find the whole idea of Tunnel Club weird and creepy, and the prices sickening.

Obviously for the über rich. The only way you can justify paying those ridiculous prices is to be absolutely minted. If it helps pay for the stadium, and people are happy to pay for it I see no harm.

But it's a shame they haven't (to my knowledge) allocated a few seats to competitions for junior members or the Hotspur Heroes (or whatever they are called).
 

Roynie

Well-Known Member
Oct 2, 2007
3,116
3,882
It doesn't look as though there will be much room left to the south of the stadium for much of a hotel. I would guess that that planning permission has been in outline only, rather than any actual designs having been submitted. I suppose that means that they can alter their ideas to suit the available space? So maybe there will be room .... WTF do I know! :cautious:
 

TottenhamMattSpur

Well-Known Member
Aug 31, 2012
10,925
16,007
Regarding the ITK, not sure the height statement can be correct? They're putting the steel in place for the top tier of the north stand and that's about the highest point less the roof.
Unless the roof is 50 feet above the back row it doesn't get near the crane cabs.
 

spursfan77

Well-Known Member
Aug 13, 2005
46,687
104,969
It doesn't look as though there will be much room left to the south of the stadium for much of a hotel. I would guess that that planning permission has been in outline only, rather than any actual designs having been submitted. I suppose that means that they can alter their ideas to suit the available space? So maybe there will be room .... WTF do I know! :cautious:

I don't know why they just don't dispose of the hotel idea and put an extra block of resi units up. Firstly they couldn't attack even a budget hotel chain and then they said they were going to have it as a training hotel. They'd make so much more money changing to flats etc. I guess they could just make them PRS (private rented sector) units instead.
 

Spurger King

can't smile without glue
Jul 22, 2008
43,881
95,149
Wouldn't mind being invited though, right?

I'd always accept a free invite to watch Spurs play, but I still find the whole concept a bit creepy. Gawping at the players through glass as if they're animals on display in a zoo.

I'd watch a City-style tunnel cam though, but I've never denied being a hypocrite.
 
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