Grand Designs Eco House

[bernardgreen]

If the connecting piece over the joint between the two halves had been inside the arch the collapse would been less likely.

The joint is the weak point and under load the arch would bend at the joint. If the connecting piece was inside the arch it woule have come under tension and provided it di not snap would have kept the side of the joint pressed into each other. Being on top it went into compression and could have acted as a fulcrum to force the joint apart.

 

[Steve]

The arch looked too flat at the top. Look at where the arch collapsed, the remaining section is sagging in the middle. I thought an arch had to be the same radius all the way round, to be stable.

 

[big-all]

The stairs puzzled me a bit, as they are effectively a half arch. The top section must be restrained by the floor structure in some way.

dont forget the stairs are slightly different you only have one point where arch is thin above and below its graduating in size to quite a big structure
as its basicly an arc with a strait line across it

http://www.channel4.com/4homes/on-t...eco-arch-behind-the-scenes-09-02-17_p_19.html

 

[Shytalkz]

The arch looked too flat at the top. Look at where the arch collapsed, the remaining section is sagging in the middle. I thought an arch had to be the same radius all the way round, to be stable.

They obviously had an issue with the maximum height, while satisfying the internal headroom across a certain width, which is why it's like that. It's more prone to failure as that shape, that's true, but providing that is taken into account in the design, then it shouldn't be a problem. There seems to have been inadequate analysis of the structure carried out, or the backfilling operation was not carried out as the design required, or it was a combination of the two. It's interesting that that happened four years ago and it's still not rebuilt. Hefty claims on insurance going on there, for sure. Looking at Tesco's website, they are not going to rely on the original design for longterm integrity and stability, either.

 

[Steve]

couldnt they just build elsewhere??

 

[Shytalkz]

Tescos don't do building elsewhere, they just continue fighting until the opposition are battered into submission.

 

[Steve]

removed

 

[bernardgreen]

Tescos don't do building elsewhere, they just continue fighting until the opposition are battered into submission.

Shame for Tesco's that Dr Beeching is no longer available to help them with this site's development.