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Questions related from Ioannis Lymperis
Soil and rock anchors have pull-out specifications that depend on many variables, such as the type of anchor mechanism, looseness of soils, depth of compaction, etc. However there must be some...
06 January 2023 4,986 3 View
The steel itself does not receive the tensile if it is not well anchored somewhere; For example, if the steel reinforcement of a balcony is not well fixed inside the slab, it will reach the ground...
28 October 2021 5,132 7 View
The columns are elastic with low dynamics. The walls, the wells, are rigid with great dynamics. The columns when rocking in the elastic displacement area consume seismic energy because through...
25 May 2021 4,239 18 View
The acceleration of the ground, the mass of the structure, and the height of the mass from the ground, are the three factors that create the magnitude of the lateral seismic force. This lateral...
24 April 2021 1,758 7 View
In the past, there were civil engineers who argued that construction should be designed rigidly, and other civil engineers argued that it should be designed with great flexibility. The great...
14 April 2021 5,678 24 View
The simplest description of the method I can do is that if we join the nodes of the highest level with foundation ground, it will withstand larger lateral overturning forces than another wall...
12 March 2019 1,850 4 View
Tensioning between of the upper edge of the walls with the earth reduces the displacements responsible for all the stresses that develop on the structural carrier. The patent is stacked into...
19 April 2018 4,664 1 View
Earthquake is a natural periodic event that destroys lives and property. It does not matter when it happens, since it does happen. The science of civil engineering around the world tries to keep...
01 January 1970 8,257 4 View
The ductility of structural elements and reinforced concrete structures is characterized by their ability to deform beyond the leakage limit, without significantly reducing their strength....
01 January 1970 9,691 7 View
Let us consider with simple examples the mechanical properties of different materials and how they react when forces are imposed on them. A candle with the wick, it is like a pillar of reinforced...
01 January 1970 5,396 4 View
With the method of designing, clamping the top-level nodes with the ground, I hope to divert the lateral inertial stresses of the earthquake into more powerful areas of the structure than those...
01 January 1970 1,374 2 View
The content of this document refers to the applied research of a deep soil anchoring mechanism with the help of tendons without affinity connects the foundation ground with the top edges of the...
01 January 1970 8,313 1 View
QUESTIONS 1) It is known that anything that is overturned is screwed onto something solid to prevent it from tipping over. Why civil engineers do not screw the sides of the walls on both sides,...
01 January 1970 2,804 19 View
All civil engineers know that inertial stresses create deformations that cause failures and collapse of structures. Deformation can be caused by three different factors 1) The greatest deformation...
01 January 1970 7,433 2 View
According to modern regulations, the seismic design of buildings is based on the ability requirements of the correct design of the nodes and plasticity. The (inevitable) inelastic behavior under...
01 January 1970 3,181 3 View
The right thing would be for science to stand on one foot in the old knowledge and with the other foot to be ready to kick and change everything. But this is not the case. What we are taught in...
01 January 1970 4,731 6 View
Brief Description of the Invention The principal object of the hydraulic tie rod for construction projects of the present invention as well as of the method for constructing building structures...
01 January 1970 9,835 4 View
Wind energy has been established as the most profitable and tested energy since ancient times. It was first used on sailboats since ancient times, followed by windmills. Today it is included in...
01 January 1970 6,814 6 View
The inelastic behavior of structures is not a choice of seismic design today, but it is an inevitable fact that they are unable to control in large earthquakes. I can control the behavior of the...
01 January 1970 892 9 View
A load-bearing structure of a reinforced concrete building with an area of 100 sq.m. consists of 24.5 cubic meters of reinforced concrete. (Excluding the bases) Each cubic meter of concrete...
01 January 1970 5,504 5 View
The force of the earthquake shifts the construction back and forth creating torque on the walls. The tipping torque is the opposite of the stability torque. The tipping torque rotates the wall...
01 January 1970 5,355 4 View
Preliminary simulation and numerical investigation was carried out at the National Technical University of Athens in order to draw useful conclusions regarding the usefulness of the new seismic...
01 January 1970 9,038 11 View
Data 1) The earthquake shifts the ground. The ground shifts the structure The structure reacts with inertia This means that the base shifts along with the ground in one direction and the slabs and...
01 January 1970 4,964 3 View
Archimedes was a Greek mathematician and the first to understand the operation of the lever arm mechanism. He had said the familiar phrase to show the power of the lever arm (It was said by...
01 January 1970 4,264 5 View
1) What I am introducing as new to the science of earthquake technology, and at last you start to understand it, is that it is wrong when you just place the construction on the ground. When there...
01 January 1970 7,067 2 View
The tipping torque is balanced by one or more stability torques. The tensile force in the cross section is neutralized by a compressive force. A cutting force cuts the cross section but is...
01 January 1970 2,348 10 View
What am I trying to stop with the method of seismic planning that I propose? I try to stop the distortion. That is, the inelastic displacement. I try to stop the moments at the nodes that break...
01 January 1970 862 1 View
Through a tendon I connect the columns, the walls and the load-bearing masonry with the ground, in order to stop the moment of failure and bending of their trunk. That is, I try to stop the...
01 January 1970 7,648 7 View
The current technology of seismic constructions likes to recycle the seismic rocking intensities, derived from the magnitude of the ground acceleration and the mass of the structure which...
01 January 1970 5,360 13 View
During an earthquake, the ground, and therefore the base of the structure that is attached to it, rocks quickly, around the initial resting position. Dynamically the magnitude we are interested...
01 January 1970 7,394 6 View
If we want to look at the universe we can not ignore the force that moves everything. No one knows where this force that moves molecules and atoms comes from. But we do know some physical...
01 January 1970 5,669 21 View
I am sure they have understood that I am trying to deflect and return the developing seismic forces into the ground from where they came from before they developed on the construction site. I...
01 January 1970 2,910 8 View
The mechanism of the invention suitable for strong adhesion to soft soil. The mechanism has a diameter of 20 mm when is closed and a diameter of 35 mm when is expanded. It is mounted in a...
01 January 1970 5,568 1 View
The cooperation between concrete and steel in a Reinforced Concrete structure is achieved with relevance. By the term - Relevance - is defined the combined action of the mechanisms that...
01 January 1970 4,998 1 View
One of the major design errors, towards the dynamic response of structures to seismic displacements. The cooperation between concrete and steel in a Reinforced Concrete structure is achieved...
01 January 1970 4,301 2 View
When a large earthquake occurs, some structures show great damage and some of them collapse, resulting in human casualties. If you ask a civil engineer he will tell you that today's constructions...
01 January 1970 6,576 24 View
Bending, tipping moment, ground subsidence, torsional buckling = deformation and inelastic deformation = failure. These are the weapons of the earthquake to destroy our constructions, their...
01 January 1970 6,177 5 View
The individual foundations of the structures have been completely removed The walls must be connected with foot girders which, mainly, try to receive the overturning torque. That is, we do not...
01 January 1970 5,137 10 View
The flexible column breaks. The rigid wall overturns. The pre-tensioned and compacted wall with the ground does not overturn does not break. This design stops distortion and without distortion...
01 January 1970 4,144 5 View
Masonry houses that do not have pillars are usually found in areas with low seismic activity, in areas around cities and are usually detached houses. Their height usually does not exceed two...
01 January 1970 5,555 13 View
Each material is more resistant to a certain force. Concrete and above all prestressed concrete withstands compressive stress. In tensile bending torsion and shear it has a problem. Reinforcing...
01 January 1970 3,641 4 View
A 10 X 10 three-story precast building with a floor area of 100 m2 with 30 cm thick concrete walls in a large earthquake with an acceleration of 1.5g has some overturning moment tendency. Wanted...
01 January 1970 200 7 View
Two equal and opposite forces balance This is known. So if we apply corresponding compressive forces to the tensile forces, they will balance. This is the prestressing mechanism that static civil...
01 January 1970 3,467 3 View
1. The elastic column has the ability to move elastically in the earthquake as it also has the necessary plasticity for inelastic displacements. On the other hand, it does not put down large...
01 January 1970 6,973 3 View
A practical mathematical way to find the cubic meters of reinforced concrete in small structures is to multiply the number 0.245 by the floor area and the result shows the cubic meters of the...
01 January 1970 9,531 5 View
The two main problems that civil engineers try to solve with computer programs to calculate the response of a structure to a large earthquake are 1) the displacement range of the columns at...
01 January 1970 9,550 8 View
The math tells us that the acceleration, depend on the frequency, in the unit of time, X the amplitude of oscillation, and the value of the acceleration X the kilograms of the mass gives us the...
01 January 1970 3,520 9 View
This rock anchor in the first video failed at 150 kN pull (15.3 tons) https://www.youtube.com/watch?v=Pc6OyzcZr-M&t=59s 2. This rock anchor in the second video failed at 202 kN of pull ( 20.6...
01 January 1970 4,939 0 View
Usually in small projects great importance is given to statics and very little importance to the foundation ground. The soil by its natural composition is inhomogeneous and its quality is given to...
01 January 1970 3,823 10 View
