Statue of Liberty pedestal was to have been made of solid granite. Financial concerns again forced him to revise his plans; the final design called for poured concrete walls, up to thick, faced with granite blocks. This Stony Creek granite came from the Beattie Quarry in Branford, Connecticut. The concrete mass was the largest poured to that time. Norwegian immigrant civil engineer Joachim Goschen Giæver designed the structural framework for the Statue of Liberty. His work involved design computations, detailed fabrication and construction drawings, and oversight of construction. In completing his engineering for the statue's frame, Giæver worked from drawings and sketches produced
Conservation-restoration of the Statue of Liberty completely assembled by April 27, 1984. The high scaffolding was designed specifically for the statue, and required ingenuity from its designers, as it could only be attached to the granite pedestal and not the statue and had to accommodate the intricate contours of the statue as well. Furthermore, the exterior scaffolding had to maintain a distance of at least 18 inches from any exposed section of the copper sheathing. The 6,000 or so separate components of the scaffold, made of a high load capacity aluminum (alloy 6061 T6), were unloaded onto Liberty Island on January 23, 1984. To prevent possible