By having the opportunity to test safety films that have been in place for nearly a quarter of a century, Madico can say with unmatched confidence that its safety films will continue to protect people and property from glass failure, natural disaster and even criminal activity for decades. Madico prides itself on making the highest quality window safety film available. The results were enlightening, peel value remained +/- 3% of the original manufactured material, tensile strength tested at over 90% of its original value, and UV blocking maintained nearly 95% of its original blocking power. Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the highest occupied floor within the building. During this evaluation Madico tested for peel value (the force needed to remove the film from the glass and a measure of how well the film will hold onto the glass when broken), tensile strength (the actual strength of the PET – polyethylene terephthalate) and UV blocking (the amount of ultraviolet radiation blocked by the film). In 2009, Madico had the opportunity to test the original safety film applied to the Hancock Tower 24 years prior. Working in conjunction with the renowned Massachusetts Institute of Technology, Madico developed a safety film that when applied to glass with a pressure-sensitive adhesive and attached to the window frames using a decorative mullion would hold the broken glass in place and prevent dangerous shards from injuring the pedestrians walking below the 600 ft. Finally, a window film manufacturer, Madico ®, Inc., was brought in to help solve the glass breakage problem. These efforts alleviated many of the issues but did not completely eliminate the glass breakage. Numerous steps were taken to correct the flaw counterweights were installed at both ends of the building to minimize sway, every window was replaced with thermally tempered glass, and the entire structure was stiffened with the installation of additional steel bracing throughout. Willis Tower, formerly Sears Tower, designed by Architect Fazlur.
JOHN HANCOCK TOWER PLUS
Unfortunately, the Hancock Tower’s innovative design had a flaw the glass kept falling out of the windows! The building came to be known by locals as “The Plywood Palace” due to the 3,500 plus pieces of plywood used to replace the fallen glass. RM 2BHAMC3Chicago downtown office towers photographed from John Hancock Observatory. The tallest building in Boston, the John Hancock Tower, acts as a navigational landmark for many. Cobb, it immediately became one of the city’s most recognizable buildings. Originally the second-tallest building in the world when it was first completed in 1969, this unique trapezoid tower is a true standout in Chicagos skyline. or search for john hancock building chicago to find more great stock. A design marvel created by one of the world’s most famous architects, Henry N. Find Hancock Building Chicago stock photos and editorial news pictures from Getty. The tower’s tapered shape was chosen in order to match the different floor space requirements that decrease from bottom to top - from the entrance and commercial zones at the base to the clusters of small apartments at medium height and finally to the large apartments on top, where relatively less space is needed for ancillary rooms with artificial lighting.The impressive John Hancock Tower was completed in 1978 and forever changed the Boston skyline. It was therefore decided to construct a single tower where the offices would be on the lower floors and the apartments on the higher levels. Moreover, the lower-level apartments would have suffered from noise nuisance from the street.
But the two towers would have occupied most of the site and would have impaired each other’s privacy and daylight conditions.
The wish to continue this mixture initially gave rise to the idea of building a 70-story apartment tower and a 45-story office tower. Known locally as “Big John,” the tower is situated on North Michigan Avenue in a prestigious district with apartments, shops, offices, hotels, restaurants, and art galleries.
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