Pretty interesting! Without a axial column, how it takes the load; the stairs would simply act like a giant spring. Cool work! It is indeed a masterpiece!
I mean the builder knows how to avoid the natural frequency, so the stairs won't collapse on itself or with loading. hehehe....
Remember many years ago, there was a brandnew bridge in the states with the right wind speed blowing over, the bridge acted a self excited torsion spring and finally collapsed!
在線雷達
發表於 2011-8-31 12:23:25
廣播
置頂
推舊帖
收嗲鳥
油顏色
~~如果有機會到西班牙旅行,我一定會去睇下
發表於 2011-9-5 14:25:43
手藝一流
