Resistance to Earthquakes

The round shaped GRANDO® building has indisputable advantages
to rectangular buildings in an earthquake crisis.

A rectangular building has just four axis (longitudinal, cross and 2 diagonal axis) that bear the shearing forces of an earthquake. If the shearing forces supersede the strength of the digonal braces, the vertical piles are overloaded, the upper and lower floors are shifted against each other and the floor collapses, sandwiching everything in between. This we have experienced in the past with quakes collapsing bridges and car parks in LA and other buildings in Kobe, Japan.

GRANDO®, on the other hand, has 24 axis with 48 vertical beams that can withstand the forces much better. Also it has no "floors" that can be shifted against each other. All beams are non-segmented H-beams of high strength and low loads on each single beam, as the weight is distributed to 48 beams! By design the building has to take up the forces of the tender motion (acceleration and deceleration) and is constructed for twisting forces. This is accomplished by either special braces in steel construction or ring anchors in the enforcement mesh with prefab concrete construction.

For example: In prefab concrete construction, pre-stressed "filigree" plates can be produced in a factory. These are semi-fabricated, light weight, 5 cm thick plates with the enforcement steel protruding from the surface. These plates can be easily transported, are installed in the building and then connected with ring anchors that run through the reinforcing mesh. Then each single prefab part is covered with a layer of pre-mixed cement to reach its full thickness, thus connecting the separate plates to each other, making the whole "spiral stair case" one unit. It is very hard to beat this strength.

Mother Nature knows what she is doing.....
or have you ever seen rectangular trees or blades of grass?!