Do you know what are the cheapest houses made entirely of reinforced concrete on which my patent has a performance? The prefabricated ones.
The acceleration of the earth on which the structure rests imposes a displacement in one direction on the building which reacts with another force in the opposite direction which we call inertia.
These two forces with different heights impose a overturning moment on the structure.
This overturning moment acts as follows.
If we have a rigid and elevated dynamic building made entirely of reinforced concrete, then the building will overturn entirely in a large earthquake. That is, its entire base will become a wall and the wall will become a base.
If the building has beams and columns then neither the columns are simply bent over, nor do the beams have the strength to rotate the building around itself, nor will the base of the building leave the ground. The reason is that neither the beams nor the columns have such strong cross-sections that they are able to rotate the structure and overturn it.
If we have walls and beams then the weaker cross sections of the beams will break, and the structure will be left on the ground without rotating and overturning.
The ceiling, however, will come down on our heads.
Here we see three different structures reacting differently. But not all of them react the way we want them to.
We don't want the columns to break, we don't want the beams to break, and we don't want it to tip over.
If we take the dynamic version of the structure that is made entirely of reinforced concrete that only topples but does not break, and embed it in the ground with strong anchors, then I ask any would-be denier of my method what damage can be done?
The structure will suffer no damage.
Do you know any more are the cheapest houses made entirely of reinforced concrete on which my patent has performed? The prefabricated ones. .... It doesn't pay off...the system and cheap and seismically sound.
The all reinforced concrete building has two main levers.
That of height and that of width.
That of height contrasts with that of width.
The one of height multiplies the moments that descend to the base and overturn the structure, and the one of width resists this overturning. So the force of inertia along with the height multiplies the overturning moments, while the building's footing on the other end of the width lever arm along with the distance from the pivot point stops the building from overturning.
The farther the anchorage is from the pivot point of the rigid building, the lower the overturning force it receives.
Good summary ,
Then, dear colleague when we use bearing walls what's matter you could present?
Dear Dr. Rasha A Waheeb
A prefabricated reinforced concrete building is 30 to 50% cheaper than a conventional load-bearing building because it is manufactured
But it has a big problem... it is rigid and in a big earthquake if it is high rise it topples or base recall occurs and unsustainable loads break it in two.
By bearing on the ground we prevent overturning or recall and the building does not break in two.
It has a good
The elongated walls have a double lever arm
of height and width. The height lever arm multiplies the moments and the width lever arm reduces the moments, so it also reduces the footing loads that the footing mechanism has to pick up.
On the other hand, the longitudinal walls have high dynamic and stiffness and this is very good for receiving the base shear and reducing deformation.
In areas of high seismic risk, they do not allow the high rise construction of prefabricated houses beyond two storeys for the above reasons.
But if we put the precast on the ground we can build prefabricated high-rise apartment buildings
That is, the prefabricated will be put into the urban burbs.
Still I have laid the foundations for the construction of 3D printed buildings ( without reinforcement ) with the method I propose
When there is prestressing in the walls and simultaneous compaction in the ground what happens in the video would not happen.
https://www.youtube.com/watch?v=AnPr5wDi6So