Staircase can simply made with Precast Concrete. The method is divided into two methods.

  1) Floor by Floor Method: Precast concrete staircase and in-site concrete wall panel are
assembled and placed simultaneously per floor
  2) Part by Part Method: Place in-site concrete wall panel of all floor first, and assemble
precast concrete stairways for every floor at once. These methods drastically
improve construction quality as well as safety during construction as unskilled
workers can simply complete the construction of complicate staircases, which skilled
workers are required.