Well this Japanese building has as it is slowly demolished floor by floor to ground level. No fuss, no inconvenience, explosives or dirt just a remarkable way of getting rid of a building with modern technology.
I can see this demolition method catching on around the world which will, no doubt, cause some consternation to the big bang brigade. What say you? TC.
What is actually happening here? are they supporting the building on jacks and taking out the lower levels and gradually bringing it down, if so it is very clever engineering. Safety issues spring to mind on this as does expense
but a great idea that aside.
Yes, but it happens all over the world as the available building land in big cities is used up. Advances in construction techniques and revisions in planning laws often permit much taller buildings with small footprints,and you can't easily add ten floors to existing buildings.
The commercial centres in cities like Tokyo, Shanghai, London and Hong Kong are in a permanent state of change as buildings are demolished and replaced. Being able to remove a building from a cramped location using this technique is a real advantage.
It seems overly complicated to me. If you're going to dismantle a building instead of using a brute force demolition method then surely it would be easier (and faster and cheaper)to do it from the top down rather than the bottom up.
WTM That was my first thought but maybe this is not practical if there is no room for a crane. Building is no doubt steel and concrete construction so how would they get down the huge amount of demolition waste. Down the inside sounds OK but all the floors will be reinforced concrete. As well as that problem they would need to prevent even small bits of debris falling off.
Not an easy job however it is approached.
"If you're going to dismantle a building instead of using a brute force demolition method then surely it would be easier (and faster and cheaper)to do it from the top down rather than the bottom up."
It's neither faster or cheaper to take down a multi-storey building from the top down.
The cheapest and fastest method is to drop the structure down with explosive charges. Setting the charges is a highly skilled and time-consuming process, but actual demolition takes a few seconds.
The method used in this Tokyo example is not cheap by any means, and it certainly isn't fast, but it negates the risk of injury to people and damaging nearby buildings, and eliminates the huge dust cloud that accompanies the explosive method.
Either way, you still have the waste clearance costs.