A string is tied to the nail and a predetermined length of string is then walked around in order to create the diameter of the pieces to be cut.
Oculus opening roof.
To achieve this a nail is driven into the ground.
Under his jaw dropping proposal in 2004 he.
The roof opened at 8 46 a m.
The skylight however was not part of calatrava s original vision.
The day is honored by american flags hanging from the roof.
The oculus roof which opens every september 11 to mark the anniversary of the 2001 terrorist attacks will be taking a rain check on tuesday when the futuris go to the content go to the footer.
The process of building this oculus starts with building up the opening which is made up of multiple layers of plywood cut to the correct radius.
What s also special on this day is that the retractable skylight opens for two hours on the anniversary of 9 11.
Removing the glass ceiling allows light to flood the main hall of the oculus.
September 11th marks a very important day for the oculus.
It is the centerpiece of the world trade center transportation hub.
Since the hub finally opened in early 2016 the wings have parted in observance of the september 11th terrorist attacks.