Modular prefabricated building construction - GIF

[Altair]

Modular prefabricated building construction.




Previously:

China rapidly building coronavirus hospital - GIF
116 excavators demolish bridge overnight in China - video
Excavators demolish bridge in 15 hours - GIF

[rgsparber]

I’d like to see this building after a major earthquake. I see pads in corners of each block but once stacked, how do you get to them for welding?

Rick

[mklotz]

The intricately fitted stone walls of the Incas had no cement at all. Despite being in an earthquake-rich locale on the ring of fire, many of those walls stand today. Machu Picchu is over 500 years old and lies directly between two active faults yet most of the structure walls still stand as built.

Folks smarter than I have suggested that, because the individual stones are free to move relative to each other, they can absorb the quake energy rather than being toppled by it.

I wonder if similar logic is behind the construction shown. It would be interesting to know the geographical location where the work is being done.

[rgsparber]

I looked up the subject and found an article from a manufacturer. They say the structure is somewhat resistant because it must survive the vibration common in transport. They made no further claims.

My guess is they would need to cast angle iron into the corners that was welded to the inner rebar. Then, as the blocks came in contact, a welder would run a bead over a few feet. A small tack weld would not be strong enough.

I can think of a few cases where access to the angles would be impossible. Interesting problem.

Rick

[odd one]

Looks like there are pins on the footers where the bottom blocks are set and the upper blocks index on the pickup points of the lower blocks. No need to weld. Nothing is going to be picking them up. May be some through bolting locations along headers between modules like bolting together a wooden modular home. The characters on the front of the first building are Chinese with the number 43. Either way, it is going to be a cold building like a full masonry block one.

[rgsparber]

Now it makes sense to me. Thanks!

Rick