NYC-WTC_000125070
Contractor requirements and site plan notes for demolition work at 30 Cedar Street.
1 shared non-person entities · Same agency, volume and box · similarity 0.943
machine-extracted · confidence unavailable · Check page ↗Document / 105 pages
Air sampling protocol document, 130 Cedar Street, Jan 2005
Machine-extracted title · confidence 100%Protocol document outlining air sampling and monitoring procedures for 130 Cedar Street.
NYC-WTC_000125098–000125202Folder label: “130 CEDAR STREET”
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OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
130 Cedar Street July 15, 2004 Selective Demolition and Facade Restoration Koenen Associates 1. Wet masonry with [cold] [hot] water applied by low-pressure spray. 2. Apply cleaner to masonry[ in two applications] by brush[ or low-pressure spray]. Let cleaner remain on surface for period indicated below: a. As recommended by chemical cleaner manufacturer. b. As established by mockup. c. Two to three minutes.
3. Rinse with [cold] [hot] water applied by [low] [medium] [high]-pressure spray to remove chemicals and soil. 4. Repeat cleaning procedure above where required to produce cleaning effect established by mockup. Do not repeat more than once. If additional cleaning is required, use steam wash.
(Mild Acidic] [Acidic] Chemical Cleaning: 1. Wet masonry with cold water applied by low-pressure spray. 2. Apply cleaner to masonry[ in two applications] by brush[ or low-pressure spray]. Let cleaner remain on surface for period Indicated below:
a. As recommended by chemical cleaner manufacturer. b. As established by mockup. c. Two to three minutes. 3. Rinse with cold water applied by [low] [medium] [high]-pressure spray to remove chemicals and soil. 4. Repeat cleaning procedure above where required to produce cleaning effect established by mockup. Do not repeat more than once. If additional cleaning is required, use steam wash.
3.9 REPOINTING MASONRY A. Rake out and repoint mortar joints to the following extent: 1. Joints where mortar is missing or where they contain holes. 2. Cracked joints where cracks can be penetrated at least 1/4 inch (6 mm) by a knife blade 0.027 inch (0.7 mm) thick. 3. Cracked joints where cracks are 1/8 inch (3 mm) or more in width and of any depth. 4. Joints where they sound hollow when tapped by metal object. 5. Joints where they are deteriorated to point that mortar can be easily removed by hand. 6. Joints, other than those indicated as sealantfilled joints, where they have been filled with substances other than mortar.
B. Do not rake out and repoint joints where not required.
C. See Section 04200 Unit Masonry for Execution of raking and repaint joints.
3.10 FINAL CLEANING
•
CLAY MASONRY RESTORATION AND CLEANING 04901 -14
NYC-WTC 000125181
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NYC-WTC_000125181Source: NYC Law Department, mirrored locally
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