Hesitant! that was the first impression before use the glass staircase.Is it strong? Is it save? Located in Sinar Rasa Kencana Office, Jakarta, Indonesia, The staircase was designed by using steel structure with spider-fitting system which make the glass look like unstick to the frame. The ladder-step was made from double tempered-glasss (24 mm depth), so that it could hold our body very well. Tempered Glass is the special design of glass which wont hurt anybody while broken because it will become unsharp grain.