paul cardiffwalesmap wrote:Zach wrote:One floor a day for the core!#$@#/%_&÷=€&$$?
I do not believe it the concrete wouldn't have set nor would they have time to raise the shuttering in that time.
Why raise it at that speed unless the rest is a steel frame jobie and students are moving in by Christmas 2017
Granted it does sound like a tall order (pardon the pun) but I got this from somebody who I've spoken to before and what he told me then proved to be bang on. Personally I have no reason not to believe that this is the intention - but regardless we won't have to wait very long to find out.
Can anybody who has greater knowledge of construction out there dismiss this as a method/possibility I wonder?
It's not impossible, you can get special concrete mixes which give high early-strength concrete, around 30-45MPa within 24-48 hours. That's pretty good considering most contractors don't like it when you specify concete mixed hight than a Grade C50/60 and you don't usually require the full strength (28-day value) in the first few days as the loads are relatively small.
I'd question why they'd want to go down this route for Herbert St. Construction methods like this are usually reserved for places like London, New York etc. where speed of construction is everything. What's the point of pushing that hard in Cardiff unless they've signed a contract to hand over the building in a really short space of time?
But getting the core finished sooner is alway an advantage, even in an all-concrete building because it means that you can get started sooner on your lifts and M+E kit. That means that first fixings can be done earlier and you have better vertical transport up and down the building.