Category:Cathedral of Learning prior to 2007 cleaning
This is a category about a place or building that is listed on the National Register of Historic Places in the United States of America. Its reference number is 75001608. |
This sub-category of images of the Cathedral of Learning at the University of Pittsburgh is reserved for images taken prior to and through the 2007 cleaning and restoration of Cathedral of Learning's facade.
The $4.8 million cleaning and restoration of the limestone facade took place from March through August, 2007.
As the Cathedral of Learning began construction in 1926, it almost immediately began to collect soot and grime on its exterior due to the heavy pollutants from Pittsburgh's then plethora of steel mills. This grime contained residue of carbons, sulfur dioxides, and gypsum that traps moisture and, over time, would cause further deterioration of the stone facade.
The West side of the Cathedral, which faces the wind, tended to self-clean and thus appears much less soiled in pictures, particularly at the upper floors. Images showing the East side of the building show a heavy, black/brown coating of dirt and grime. This was completely removed from the building except for one small portion of a wall in an interior light well which serve as a reminder to the city's industrial past. Cracked stones and lose mortar were also repaired.
Cleaning was accomplished by first pre-soaking with pressurized water to loosen materials and then blasting with a substance composed of recycled micron powdered glass rinsed off with pressurized water.[1][2][3][4][5][6][7]
Media in category "Cathedral of Learning prior to 2007 cleaning"
The following 52 files are in this category, out of 52 total.
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1935CathedralofLearningOwl.jpg 420 × 619; 185 KB
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Building machines at Cathedral of Learning summer 2007 01.JPG 3,072 × 2,304; 1.37 MB
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Building machines at Cathedral of Learning summer 2007 02.JPG 3,072 × 2,304; 1.38 MB
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Building machines at Cathedral of Learning summer 2007 03.JPG 3,072 × 2,304; 1.32 MB
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Building machines at Cathedral of Learning summer 2007 05.JPG 3,072 × 2,304; 1.37 MB
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Building machines at Cathedral of Learning summer 2007 06.JPG 3,072 × 2,304; 1.36 MB
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Cathedral Against an October Sky (398974758).jpg 2,304 × 3,072; 2.59 MB
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Cathedral and Clouds (492682157).jpg 2,304 × 3,072; 3.47 MB
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Cathedral from Upper.jpg 732 × 1,055; 533 KB
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Cathedral of Learning (92764484).jpg 3,504 × 2,336; 6.48 MB
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Cathedral of Learning (92801226).jpg 3,408 × 2,308; 1.67 MB
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Cathedral of Learning - bottom.jpg 3,072 × 2,304; 1.24 MB
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Cathedral of Learning 01.jpg 2,304 × 3,072; 1.16 MB
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Cathedral of Learning 02.jpg 2,163 × 3,054; 2.71 MB
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Cathedral of Learning 03.jpg 2,304 × 3,072; 1.23 MB
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Cathedral of Learning 04.jpg 2,304 × 3,072; 992 KB
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Cathedral of Learning 05.JPG 2,304 × 3,072; 804 KB
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Cathedral of Learning 06.JPG 2,304 × 3,072; 1,011 KB
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Cathedral of Learning 07.JPG 2,304 × 3,072; 585 KB
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Cathedral of Learning 2.jpg 115 × 240; 39 KB
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Cathedral of Learning, HDR.jpg 800 × 600; 135 KB
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Cathedral of Learning.jpg 348 × 420; 112 KB
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CathedralandPantherCrop.jpg 214 × 376; 104 KB
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CathedralFromSS.jpg 1,200 × 900; 689 KB
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CathedralfromSSiconcrop.png 475 × 376; 287 KB
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CathedralofLearningLawinWinter.jpg 2,592 × 1,944; 1.83 MB
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CathedralofLearningstoneworkDetail.jpg 2,304 × 3,072; 2.99 MB
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CathedralthroughEnglishRoomWindow.jpg 1,944 × 2,592; 1.19 MB
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CathoLearn.jpg 1,696 × 2,544; 420 KB
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CKCathof-Learn.jpg 1,120 × 1,790; 462 KB
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CMU campus Cathedral Learning background.jpg 1,200 × 1,600; 680 KB
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Dark Cathedral of Learning.JPG 2,304 × 3,072; 1.28 MB
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HeinzSpireCathedral.jpg 822 × 1,098; 381 KB
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LookingupatCathedralofLearning.jpg 3,005 × 2,015; 837 KB
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Oakland Schenley.jpg 2,272 × 1,704; 2.2 MB
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Oakland.jpg 2,272 × 1,704; 2.31 MB
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Pittbanner Heinz.png 500 × 50; 6 KB
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PittPortCathedralLearning.jpg 690 × 524; 235 KB
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Pittsburgh Cathedral of Learning.jpg 1,600 × 1,200; 533 KB
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Pittsburgh12.jpg 1,600 × 1,200; 697 KB
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Pittsburgh18.jpg 1,600 × 1,200; 646 KB
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SchenleyPark1.JPG 1,024 × 768; 99 KB
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Spring Cleaning- Cathedral of Learning (428488493).jpg 2,304 × 3,072; 1.73 MB
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The Cathedral of Learning.jpg 800 × 600; 53 KB
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TowerLearning.jpg 348 × 562; 54 KB
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University of Pittsburgh - Cathedral of Learning (4669229880).jpg 533 × 800; 251 KB
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UpittCOL.JPG 1,536 × 2,048; 1,001 KB
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Who Knew? (464321743).jpg 2,304 × 3,072; 2.16 MB
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Wiinter Lines (400045440).jpg 2,304 × 3,072; 3.47 MB
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WPUfromtheCathedral.jpg 490 × 668; 255 KB