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Document / 4 pages

Memo on concrete curb protection at 7 WTC, Sep 1998

Machine-extracted title · confidence 95%

Correspondence detailing mandatory protective measures for Kemperol membrane before pouring new concrete curbs.

NYC-WTC_000171438–000171441

Folder label: “OEM Radio Equipment Room 7 World Trade Center, NY, NY

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Scanned page image, NYC-WTC_000171441
OCR text

OCR status: ocr · source: ours

NYC-WTC_000171441 WALSAS AadWS4-NOed Mn" ‘a‘a af td Lect iS@ S66F ZT “ACN VOBLLPEELE = ‘ON SNOHd Woda 11129801 D-2 | REMSION 1) (ISSVE DATE 11-12—98 SCALE N.1.S. DRAWN BY D.R.W. SEVEN WORLD TRADE CENTER, NY, NY OEM RADIO EQUIPMENT ROOM ON NOES: 1. WHERE PLACEMENT OF CONCRETE §S REQUIRED OVER SECTIONS CF KEMPERGL MEMBRANE, APPLY (2) COATS XEMPEROL PRIMER 0 {@0.8—1.0 GAL SAND INTO SECOND WET COAT OF PRUMER. 2. PROVOE CONTINUOUS CLEANING WTH WATER ANO BRUSH TO ELIMINATE SETILEMENY OF CONCRETE RESIDUE ON W~PLACE MEMBRANE ADJACENT TO AREA OF CONCRETE PLACEUENT, PER 100 SF} WITH BROADCAST KILA—DAD SLica! KEMPERGL FLASHING SYMM. ABOUT el a ce nn ant ‘ery AT _¢ THY ALL PENETRATIONS THROUSH YETAL CAP FLASHING Td 3£ ' CAULMED WITH POLYURETHANE SEALANT ANO FLASHED . WT XEMPEROL MEMERANE AS REQUIRED TO FORN A ‘ WATERTIGHT SEAL. THIS SHALL INCLUDE ALL STERL, ANGLES, CLIPS AND FASTENERS. NEW METAL PANEL WALL SYSTEM (aY OTHERS) NEW METAL CAP FLASHING W/DRIP RETURN (BY OTHERS) 7— PREPARE, LEVEL & PATCH SUBSTRATE AS REQUIRED W/APPROVED LEVELING COMPOUND PRIOR TO APPUCATION OF KEMPEROL PRIMER & MEMBRANE (TYP.) (1} PLY KEMPEROL MEMBRANE FLASHING EXTEND 4" MIN. HORIZONTALLY ONTO KEMPEROL FIELD MEMBRANE. EXIST. KEMPERGL MEMBRANE TO REMAIN BELOW NEW CONC. CURB—PROVIDE ALKAU-NITY BARRIER. ANGLED RESIN FILL TYPICAL @ ALL MEMBRANE TERMINATION POINTS. ASSURE FULL CONTACT OF COMPOSITE W/ SUBSTRATE é& RESIN SATURATION OF FLEECE CONTINUOUS 4” WIDE STRIP OF KEMPEROL MEMBRANE @ WALL 70. DECK TRANSITION. EXISTING KEMPEROL FIELO MEMBRANE—REMOVE SAND AGGREGATE SURFACING, CLEAN W/MEK & PRIME BEFORE STRIPPING IN NEW MEMBRANE. SYSTEM SRR NEW CONCRETE CURB SUPPORT TIE-IN TO EXISTING KEMPEROL MEMBRANE SSS SS OS 3 _ t <i, ~ SCALT: WTS 4 . ; JAN 28 "99 12:11 FR AMBA ; 11/13/98 .14:42, FAK: 2122190256 1 SWANKE HAYDEN CONNELL SSADOR CONSTR. CO212 949 3762 TO 6693644 1 005/005 P. 48-8 NYC 9/11 Public Portal Document

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NYC-WTC_000171441Source: NYC Law Department, mirrored locally

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