May 12th, 2008-Wenchuan Earthquake-Grade 8;
Jan 12th, 2010-Haiti Earthquake-Grade 7;
Feb 27th, 2010-Chile Earthquake- Grade 8.8
According to the geological experts, the earth we live is going to enter seismic active period in the coming two years. Considering South Europe, North Africa, the Middle-East, costal region of Asia, the Oceania, Canada and west coast of U.S., Central America, west coast of South America are all located on the seismic zone, the stability of buildings has become a hot issue. As the important exit to escape in emergencies, and the major supporting part of building entrance, automatic door’s stability became particular essential.
Since KBB 2 wings/3 wings/4 wings automatic revolving doors and manual doors are adopted with unique drum wall load-bearing technique, they are more solid than the normal pillars supporting doors in the market. And the supporting force increased by this technique to the top and surrounding area of automatic door is several times stronger than the traditional pillar supporting solution.
KBB is your choice of stability and ease.
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As the illustration shown, the areas in red are the supporting parts. The left drawing is conventional product and the right one is improved supporting method of KBB revolving door.
 
The left drawing indicates the glass and rest parts sharing the load-bearing. The right drawing shows the conventional pillar supporting method. |