Caisson pile / shoring. This is really quite common these days.Question for the construction experts. I’m watching the drilling action at site, and have noticed that they have been drilling their holes, and filling with concrete, but aren’t using any piles. Is this some sort of new technique? I thought they always put in the piles and then add the concrete after.
You called it. Any other construction starts coming up?There is some news for this project. Construction will be going ahead soon, like within the next couple of weeks or so. Ellis Don will be the GC. Also I have been told that the height will be 42 floors and 5 levels of underground parking. I haven't seen the development permit, so 42 floors might be incorrect. But I've heard 40 floors and 42 floors.
Place 10 will ostensibly be restarting before the end of the year, and McPherson Square could surprise us as well. Sales aren't doing too bad at Nude, so wouldn't be too surprised to see that one come out of the woodwork either.You called it. Any other construction starts coming up?
For a structural pile they drop in a cylindrical rebar cage but maybe for shoring it doesn't need it. There's also situations where they put a slurry in the hole as they drill prior to the concrete to keep the hole from caving in. https://www.pilebuck.com/foundation-manual-caltrans/chapter-9-slurry-displacement-piles/I've seen these caisson piles used in other sites, but I thought they sunk a steel pile into the caissons along with the concrete, or am I imagining things?
That could be it.For a structural pile they drop in a cylindrical rebar cage but maybe for shoring it doesn't need it. There's also situations where they put a slurry in the hole as they drill prior to the concrete to keep the hole from caving in. https://www.pilebuck.com/foundation-manual-caltrans/chapter-9-slurry-displacement-piles/
Piles are on site now. They are re-drilling, but with a smaller circumference - and then adding the piles in .There should be soldier piles or caissons reinforced with those cages spaced around the excavation.