really enjoy watching this building go up.. I am a retired sheetmetal worker, when I got into a building most of this work was done.. interesting to see what goes into a poured concrete and rebar building.. Hope I never have to cut a hole into a floor or wall on this building..
Someone asked several weeks ago what they do with the concrete that's in the pipes of the tower when they finish a pour. The answer is the same as for pumper trucks - they put it back in the last concrete truck, which you can see best at 33:26 and thereafter. What I don't understand is why they use that little section of pipe that's fixed to the side of the building to do that instead of putting the hose from the tower directly into the truck. Is something else doing on there? Are they trying to catch the sponge before it gets to the truck?
All these things being screwed in to the formwork must make it a pain to strip the formwork afterwards. Then somebody will have to go along cutting all the ends off the screws and nails. Also must make most of the formwork only usable once.
They use structural concrete , San Francisco is a high seismic area, so the quantity e quality of cement and the aggregate is for sure a contract specification that the company must respect. This concrete in 5-6 day ageing got 70% of his total perform capacity. I do.not see the site quality manager taking concrete samples on video, maybe I missed
adriano bonaldo fascinating information, cheers buddy 👍🏼😊 I know ordinary concrete can take years to fully cure and glass never really does, always in a fluid state believe it or not...certainly all very technical. 👍🏼
Usually after 28 days this structural concrete got 100% of performance, but the concrete ageing process, continuos for many years. Samples taken from very old concrete of 120 years, prove this typicall feature. Going back to many century, we remebar that the romans were able to use this material for stone brick wall. Anyway the question now is when the concrete could complete this ageing process increasing slowly his resistance and start with a reverse process to lose performance, at the moment nobody know about this
Well, sort of. Actually, it is the stabilizing structure to keep the building from coming apart during earthquakes. They put the elevators inside because that makes good use of wall space that can have very limited openings.
See what I mean when the rebar in the columns are upside down, had the tails been up instead of down they wouldn't have to cut them, it wouldn't matter if they spliced to long and it just works better. The only thing you have to make sure and that would be the take off guy's job, is that the tails are long enough from top of slab for the splice for the next level column and so on.
Freedom flight Well, this requires more than most since it’s in San Francisco and the Earth has a bad habit of moving around there on its own accord. In addition, it’s on eluvial lands with no way to get to bedrock so it’s floating on a thick mat of concrete and steel. Thus it has to be rigid enough to keep its structure even if the land liquifies and starts moving, sinking, or shaking like a bowl of jello. Add in a good bit of extra fudge factor and you end up with a lot of steel.
Yeah I have never seen so much rebar and concrete in my life put into anything thing except when they build a concrete dam. When the big one hits Frisco and liquefaction takes place, this thing will stand tall and undamaged everyone inside safe and sound as it majestically sinks 4-5 floors into the ground, (This is supposed to be a high rise isn't it? Other wise the joke doesn't work) After that they can fill in the submerged floors with more concrete and build however many floors they lost to the liquidation on top and it will be business as usual, LOL
Lots of stuff going on. How about when you zoom in to certain areas, maybe add a little bit of information at the bottom about what is going on like what are the all the different color tubes for and the stuff being screwed to the under support boards and what are the different large vertical columns for. Some of it is intuitive but other stuff I have no idea what it's for. I've never watched something like this done before and it is very interesting to watch. Thank you for posting these video's. Pretty cool for a retired guy who's been a lifelong auto mechanic to see what others do for a living.
All that has been discussed in the comments this and prior weeks, mostly by people who have actual knowledge of this kind of construction. Take a look at them.
Concreting starts at 9am , equipment placed on the slab at 11am and a heavy steel shutter shortly after 1pm what happened to allowing the concrete to cure
Yeah I noticed that as well went back and forward a few times to see how long it was. About 2 hrs from pour till craneing stuff onto slab. That is mighty quick setting concrete.
Ants Ants Ants everywhere , all doing good . This level of the build appears to have GUTS and GLORY , the hub of mechanics to it . Now as for the PROTESTORS , they are peaceful and are showing concerns, this I can accept, and another level starts as one is finished , this progress, and all have the bugs worked out !
Great, thanks from Taiwan. Fun to watch everytime and appreciate every your vedieo. Would you like to tell me what the temperature these days, the construction worker wear heavy cloth.
“The coldest Winter in ever spent was a Summer in San Francisco.” Said the famous author Mark Twain. It’s chilly in San Francisco since the wind usually blows in off the ocean cooled by the California Current. I’ve been there in the summer when there was a high temperature of 22C in Downtown San Francisco and 40km to the East it was over 35C!
I'm curious about that central section ua-cam.com/video/n8MZMcO4_Uo/v-deo.html with the heavy rebar and blue conduit. Would that be a central "spine" to give the building some rigidity?
Richard Holder, probably. The blue “conduit” is actually post tensioning cables. After they pour the concrete and it cures, they’ll come in with big hydraulic jacks and pull those cables really tight and thus compress the concrete. Concrete loves compression but it totally lacks the ability to deal with tension. So these wires act like ligaments to hold the concrete together. Post tension usually costs less then the rebar it replaces and in some cases it’s the only way to get the strength you need since you can’t add any more rebar because you’d displace too much concrete. The disadvantage is that once in place you can’t cut these cables so it makes any modification very difficult. In fact, an accident ( and bad engineering) that impacted the post tension “top ring” on the containment building of the Crystal River Nuclear Power Station during a remodel and retrofit, so badly damaged the building that it was deemed economically unreasonable to repair it. They ended up closing the entire power station to the tune of billions of dollars! But yes, this is probably one of the major shear points of the building and this beam probably supports a lot of structure..
No it is not the spine of the building... This beam is spanning a wide interior drop off area bellow, and supporting a planted column above. Therefore it will carry a high point load comming from the above floors through the planted column. This is why it need to be big sized and post tensioned.
About the blue conduit, these are a high strength steel cables inserted inside blue conduites. After pouring the concrete, these cables (strands) will be stressed by pulling them (mostly on stages) during the construction progress of the building and adding upper floors. We call this system of construction as (post tensionning).
Only the left half of the building, as seen here, will be a high-rise. So this big beam will support part if the right-side exterior wall of that section. As No'oman says, it will support columns in that wall that are over an open area. See the second and third images at ua-cam.com/video/n8MZMcO4_Uo/v-deo.html to get a better idea of what's being built. The right front section will also continue up, but not so far as the left side. The section right behind that is already at finished height, while the right rear seems to go up one more floor if I've counted correctly.
Right around 21:07 I see two people making busy time carrying one piece of what looks like #8 or 10 rebar at a time they should be able to do at least three, like the videos.
#8 unit weight is 3.98kg/m, that is a rebar more than 10 meter will 39.8kg, #10 is 6.39 that 10m will 64kg. In EU as I know seems 25kg/person rule have, in Taiwan we also have the same idea as you mentioned but in US or EU may not. Abovethere personal opinion for reference only.
Richard, These guys have a nice Union. I’ll always remember my old man, who was a Union Ironworker and hated busting rods, trying to get on at Nuclear Power job where the smallest piece of rebar in sight was thicker than your wrist and nothing was ever picked up by hand. Besides, that looked more like #14 to me. ;)
Any honest work is honorable and good but I feel a little sorry of the guy and his back especially doing the wiring together of the rebar on the floor before they pour the floors. LOL Anyone have artist diagrams or pictures of what this is supposed to look like both outside and inside when finished?
It’s ENT conduit aka smurf tube. It could be used for power, lighting, fire alarm, data cable etc. The part they are inserting the ent into is called a “turn down stub out” so it can be extended on the floor below.
Товарищи Американцы, дайте мне $100, я живу в бедной коррумпированной, захваченной шайкой бандитов из 90-х годов России, денег не хватает даже на продукты что бы нормально семью прокормить, всё уходит на оплату жилья, электричества, бензин и ремонт старой машины. Как же мы все тут вам завидуем.
Comrades Americans, give me $ 100, I live in a poor, corrupt, captured gang of bandits from the 90s of Russia, there is not enough money even for food to feed a family normally, everything goes to pay for housing, electricity, gasoline and repair of an old car. How we all envy you here. Well, nothing, soon we will live, it has already begun in Khabarovsk, soon people everywhere will rise up against this gang in power.
Another amazing video for the best construction channel on UA-cam keep up the great work 👍
Always fun to watch. Thank you and the those on the site.
33:50 is probably the furthest off-road that SUV will ever be.
shows that some people just do not now how wide there car is.
@@jurgenmeier5003 shows that some people just do not now how wide their car is.
It's a mercedes!! Perhaps the driver is very unsure if Donald let him import a new one ;-)
I really enjoy your videos HC. They leave me with more questions about how buildings are constructed, but they are great. Thank you very much.
Good Morning from Germany. Have a nice Day and Thanks for the New Video.243
really enjoy watching this building go up.. I am a retired sheetmetal worker, when I got into a building most of this work was done.. interesting to see what goes into a poured concrete and rebar building.. Hope I never have to cut a hole into a floor or wall on this building..
I look forward to Saturday night when the new S series video comes out. Very interesting, and very well done!!!
Hello H C, great video showing a great workforce and your editing is of a high standard well done. H C and the workforce continue to stay safe 😷
Love the new videos!
Another great one, HC. Thanks again. :-)
Thank you sir!
Someone asked several weeks ago what they do with the concrete that's in the pipes of the tower when they finish a pour. The answer is the same as for pumper trucks - they put it back in the last concrete truck, which you can see best at 33:26 and thereafter.
What I don't understand is why they use that little section of pipe that's fixed to the side of the building to do that instead of putting the hose from the tower directly into the truck. Is something else doing on there? Are they trying to catch the sponge before it gets to the truck?
İstanbul'dan Merhaba "Hi from İstanbul" thank you soo much Sir.
Thanks for the new vídeo from Brazil
threading those rebar columns on top of each other looks tricky!
All these things being screwed in to the formwork must make it a pain to strip the formwork afterwards. Then somebody will have to go along cutting all the ends off the screws and nails. Also must make most of the formwork only usable once.
It just rips off. Easily reuseable.
Greetings from germany✌️
super fevorit, video and interesting.
acabando de ver do Brasil as 22:38 do dia 18/07/2020 mais um belo trabalho um abraço a todos e até semana que vem.
tamo junto👍
So weird I started to hate the diggers moving the same dirt now I’m missing them
Crikey, it doesn’t take long for that cement to harden, working on it after only a few hours......
They use structural concrete , San Francisco is a high seismic area, so the quantity e quality of cement and the aggregate is for sure a contract specification that the company must respect. This concrete in 5-6 day ageing got 70% of his total perform capacity. I do.not see the site quality manager taking concrete samples on video, maybe I missed
adriano bonaldo fascinating information, cheers buddy 👍🏼😊
I know ordinary concrete can take years to fully cure and glass never really does, always in a fluid state believe it or not...certainly all very technical. 👍🏼
Usually after 28 days this structural concrete got 100% of performance, but the concrete ageing process, continuos for many years. Samples taken from very old concrete of 120 years, prove this typicall feature. Going back to many century, we remebar that the romans were able to use this material for stone brick wall. Anyway the question now is when the concrete could complete this ageing process increasing slowly his resistance and start with a reverse process to lose performance, at the moment nobody know about this
I guess that's the elevator shaft that has 5 ton of steel for each foot of rise! I don't think it's going to fall down in my lifetime!!
Well, sort of. Actually, it is the stabilizing structure to keep the building from coming apart during earthquakes. They put the elevators inside because that makes good use of wall space that can have very limited openings.
The other shorter length concrete walls are called "shear walls" serve in that same purpose as well.
Please, if possible!!! I really want to see how the builders have lunch!!!
See what I mean when the rebar in the columns are upside down, had the tails been up instead of down they wouldn't have to cut them, it wouldn't matter if they spliced to long and it just works better. The only thing you have to make sure and that would be the take off guy's job, is that the tails are long enough from top of slab for the splice for the next level column and so on.
Hello this was cool watching the construction,I'm wondering how they flush out the concrete pumper trucks and towers
@ 14:23 THE LABOR BREAKING PLYWOOD FALLS DOWN
You've got some good eyesight to notice that!
That took me ages to find what you were talking about. Back and forward back and forwards looking at each guy till I saw it.
for those who are curious about the neighbourhood: next to the red bus lane is a Tesla car shop
good construction, good videos, only the remaining ones are missing and the finish of the play.
greetings from Pichilemu, Chile
26:30 So I am guessing by now you two know one another...?
OK before watching this channel I was aware that it took steel and concrete to build buildings. I did not realize it took this much steel
Freedom flight Well, this requires more than most since it’s in San Francisco and the Earth has a bad habit of moving around there on its own accord. In addition, it’s on eluvial lands with no way to get to bedrock so it’s floating on a thick mat of concrete and steel. Thus it has to be rigid enough to keep its structure even if the land liquifies and starts moving, sinking, or shaking like a bowl of jello. Add in a good bit of extra fudge factor and you end up with a lot of steel.
Yeah I have never seen so much rebar and concrete in my life put into anything thing except when they build a concrete dam. When the big one hits Frisco and liquefaction takes place, this thing will stand tall and undamaged everyone inside safe and sound as it majestically sinks 4-5 floors into the ground, (This is supposed to be a high rise isn't it? Other wise the joke doesn't work) After that they can fill in the submerged floors with more concrete and build however many floors they lost to the liquidation on top and it will be business as usual, LOL
Lots of stuff going on. How about when you zoom in to certain areas, maybe add a little bit of information at the bottom about what is going on like what are the all the different color tubes for and the stuff being screwed to the under support boards and what are the different large vertical columns for. Some of it is intuitive but other stuff I have no idea what it's for. I've never watched something like this done before and it is very interesting to watch. Thank you for posting these video's. Pretty cool for a retired guy who's been a lifelong auto mechanic to see what others do for a living.
All that has been discussed in the comments this and prior weeks, mostly by people who have actual knowledge of this kind of construction. Take a look at them.
Super.
Concreting starts at 9am , equipment placed on the slab at 11am and a heavy steel shutter shortly after 1pm what happened to allowing the concrete to cure
Yeah I noticed that as well went back and forward a few times to see how long it was. About 2 hrs from pour till craneing stuff onto slab. That is mighty quick setting concrete.
Hello
What camera did you use?
Super
Ants Ants Ants everywhere , all doing good . This level of the build appears to have GUTS and GLORY , the hub of mechanics to it . Now as for the PROTESTORS , they are peaceful and are showing concerns, this I can accept, and another level starts as one is finished , this progress, and all have the bugs worked out !
How many floors will this hospital have once completed? Looking good so far.
I believe 13 floors
It’s a ‘senior living centre’
@@tutekohe1361 That's interesting. With all the ameneties, I presume? Looks like it'll be an amazing place to live. Thanks for letting me know.
When the guy pulled out the rerod and threw it to the side you should have dubbed in an implosion
😂😂😂😂😂😂 That would have been Epic!
как быстро застывает бетон! используются для этого какие-либо специальные отвердители?
спасибо за видео и удачи!
ну, какой-то чудо бетон, застывает за пару часов
Great, thanks from Taiwan. Fun to watch everytime and appreciate every your vedieo. Would you like to tell me what the temperature these days, the construction worker wear heavy cloth.
This time of year, in this part of San Francisco, most days have a daytime high of mid-60's and a nighttime low of mid-50's (degrees Fahrenheit).
“The coldest Winter in ever spent was a Summer in San Francisco.” Said the famous author Mark Twain. It’s chilly in San Francisco since the wind usually blows in off the ocean cooled by the California Current. I’ve been there in the summer when there was a high temperature of 22C in Downtown San Francisco and 40km to the East it was over 35C!
@@Bill_N_ATX thanks , in Taiwan now the temperature reach 38 ℃, its really hot why I wonder the workers wear heavy under sunshine.
Arthur Lin, I live in a Texas where it was 41 yesterday. San Francisco sounds good to me too.
Qual seria a metragem dessa obra
the bus stop has no more its own light? Missing since tuesday evening
Yeah, I don't know what happened there
29:41 - Is that Justin Townes Earle?
RIP :-(
I'm curious about that central section ua-cam.com/video/n8MZMcO4_Uo/v-deo.html with the heavy rebar and blue conduit. Would that be a central "spine" to give the building some rigidity?
Richard Holder, probably. The blue “conduit” is actually post tensioning cables. After they pour the concrete and it cures, they’ll come in with big hydraulic jacks and pull those cables really tight and thus compress the concrete. Concrete loves compression but it totally lacks the ability to deal with tension. So these wires act like ligaments to hold the concrete together. Post tension usually costs less then the rebar it replaces and in some cases it’s the only way to get the strength you need since you can’t add any more rebar because you’d displace too much concrete. The disadvantage is that once in place you can’t cut these cables so it makes any modification very difficult. In fact, an accident ( and bad engineering) that impacted the post tension “top ring” on the containment building of the Crystal River Nuclear Power Station during a remodel and retrofit, so badly damaged the building that it was deemed economically unreasonable to repair it. They ended up closing the entire power station to the tune of billions of dollars! But yes, this is probably one of the major shear points of the building and this beam probably supports a lot of structure..
No it is not the spine of the building... This beam is spanning a wide interior drop off area bellow, and supporting a planted column above. Therefore it will carry a high point load comming from the above floors through the planted column. This is why it need to be big sized and post tensioned.
About the blue conduit, these are a high strength steel cables inserted inside blue conduites. After pouring the concrete, these cables (strands) will be stressed by pulling them (mostly on stages) during the construction progress of the building and adding upper floors. We call this system of construction as (post tensionning).
Only the left half of the building, as seen here, will be a high-rise. So this big beam will support part if the right-side exterior wall of that section. As No'oman says, it will support columns in that wall that are over an open area.
See the second and third images at ua-cam.com/video/n8MZMcO4_Uo/v-deo.html to get a better idea of what's being built.
The right front section will also continue up, but not so far as the left side. The section right behind that is already at finished height, while the right rear seems to go up one more floor if I've counted correctly.
Right around 21:07 I see two people making busy time carrying one piece of what looks like #8 or 10 rebar at a time they should be able to do at least three, like the videos.
#8 unit weight is 3.98kg/m, that is a rebar more than 10 meter will 39.8kg, #10 is 6.39 that 10m will 64kg. In EU as I know seems 25kg/person rule have, in Taiwan we also have the same idea as you mentioned but in US or EU may not. Abovethere personal opinion for reference only.
@@ckmc01 I used to work making precast concrete products the only rule we followed was , wait no load rules I can remember just get it done😀
Richard, These guys have a nice Union. I’ll always remember my old man, who was a Union Ironworker and hated busting rods, trying to get on at Nuclear Power job where the smallest piece of rebar in sight was thicker than your wrist and nothing was ever picked up by hand. Besides, that looked more like #14 to me. ;)
Any honest work is honorable and good but I feel a little sorry of the guy and his back especially doing the wiring together of the rebar on the floor before they pour the floors. LOL
Anyone have artist diagrams or pictures of what this is supposed to look like both outside and inside when finished?
ua-cam.com/video/J0VQwXeWK9Q/v-deo.html
There are several views of the outside at handelarchitects.com/project/1001-van-ness
👍
Do you know anything what's going on inside the floors
We won't get to see too much inside until the building gets higher and there are floors at or near camera level.
29:43 Ironworkers using up all the slab bolster for the bottom mat of the slab, then be like "you didn't send enough we ran out" 👁️👄👁️. j/k
👍👍👍
Those marchers are not allowed on the site roads
At 25:40 does anyone know what the white lines/hoses are for?
I would guess electrical or even networking.
Pulling electrical wires through after the concrete is poured? Thats my guess
electrical conduit?
It’s ENT conduit aka smurf tube. It could be used for power, lighting, fire alarm, data cable etc. The part they are inserting the ent into is called a “turn down stub out” so it can be extended on the floor below.
What are the blue things they attach to base floor before the rebar?
Looks hot there, I would die in long pants and T shirts.
👍😁🤪
16:29
Garage Tesla on left 👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻
If you look closely, every once in a while in some videos you can see a truckload of new Teslas arrive and get unloaded.
hi
Товарищи Американцы, дайте мне $100, я живу в бедной коррумпированной, захваченной шайкой бандитов из 90-х годов России, денег не хватает даже на продукты что бы нормально семью прокормить, всё уходит на оплату жилья, электричества, бензин и ремонт старой машины. Как же мы все тут вам завидуем.
А че так мало просишь? )) И на счет "мы", ошибаешься, лично я не завидую.
@@zritel23 значит ты кремлебот или запутенец паршивый. ))
@@Sergey8331 Серега, это ты что ли?.. А я думал насрано...
@@zritel23 толян это ты в зеркало посмотрел и увидел там? ну да, ты же кусок говна путенского больше ничего не видишь там.
PLEASE DON'T GIVE THESE PROTESTERS ANY MORE EXPOSURE. I AM SICK AND TIRED WHAT THEY ARE TRYING TO DO TO THIS COUNTRY.
Comrades Americans, give me $ 100, I live in a poor, corrupt, captured gang of bandits from the 90s of Russia, there is not enough money even for food to feed a family normally, everything goes to pay for housing, electricity, gasoline and repair of an old car. How we all envy you here. Well, nothing, soon we will live, it has already begun in Khabarovsk, soon people everywhere will rise up against this gang in power.