Sunday, September 11, 2016

New Tohoku Community

Just from my dreams and my ideas without any computer simulation;- The idea for a new coastal Tohoku community is different concept than normal home building.
Each of the coastal home's & office buildings are built to add security to buildings further inland in the event of another Tsunami. The larger buildings should have a concave wall that locks up with pressure facing potential wave direction to absorb more of the wave energy. I don't imagine anyone building a reinforced, concave, drystone wall over 22 meters that can withstand a tsunami wave. The harder the wave pushes on such a wall, if anchored correctly;- the wall should create force that holds the wave back for even up to 5 min. However, the use of Flat walls is not absorbing or deflecting any wave energy to make significant impact.
  • Features of new homes/offices (inner temporary wave container of space):
  •   2 -3 meter wide staircase up to 10'.
  •  There is a upstairs landing area that is another 2.5-3 meters
  •  1-2 meter wide walks off the landing
  •  banisters on each side of the staircase
  •  The ceiling height of this interior wave container reaches up to 4.5 meters
  •   The construction of the rear wall (perpendicular to shoreline) is thicker and more sturdy to withstand a water fill of the inner wave container.
  • Part of the idea is to build & stagger homes to slow down a Tsunami wave by creating interior building and exterior pockets.

The pockets are created by allowing water to enter homes or office buildings that have an interior vault with a reinforced rear wall. Of course there is no guarantee that the sides of the structure will keep integrity.  The concept is to make an initial minimal 3-5% impact in decreasing wave strength. One of the noted instances in the Tohoku tsunami is that the buildings were obstacles that did not allow for water flow through them. This allowed the wave to push and use the building mass to level other
existing structures further in the wave path.
It is counter-intuitive, to allow water damage through building openings.
However, I think that it can be used in some small sense to allow for a decrease in wave strenght.
And, for larger buildings to collapse from interior water pressure and changing wave direction before the building is shoved like a bulldozer.

The other issue is the amount of water receding and the possibility of survivors from first instance of flooding. The time/length of the tsunami pushing through may be a matter of an hour or so. Having a reasonable anchor position with a purified air tank & where there is less debris would potentially enable survival even with black-out from wave pressure. It may be a ridiculous investment.
However, with certain loss of building structures in large tsunami waves;- even a small percentage change in wave strength and temporary re-direction or disruption due to staggered building structures that capture water (with front doors and windows that collapse inward at a certain pressure) may create time for survivors further inland.