Document 2NzjLeo7e3mJveE3mxBRy4LOr

I To: rom: Subjtcfc Frank M. Stcmpf John O'Rourke CXFC0 HZAT-SZH1D Failure - Federal Office Building, U: M-no-re ryland */ With respect to the recent CAFCQ EXIT-SITHT.D failure on the Federal Office Building in Baltimore, X hare received three reports - your report dated January 28th, a trip report from Ziggy Susaid, dated January 2?, 2B and a report from Harry Schneider dated January 23, 19^5* I consider this eouplaint to be real serious because this vas the new EHAT-.SHHLD formulation and this vas an application to concrete which, to ry lacvledge, ve have never experienced failure before* Frcn a review of the three reports, it would appear that two failures were occurring* One vas failure at the adhesive line and the other one vas failure within the sat it self. The question is - as a result of our concentrated personal coverage job, are ve any closer today in Amoving what happened to cause either one of the above-mentionec failures than ve were.at the tine the cosplaint vas investigated? The sales organization must always be in a position to advise a customer or an archi tect as to plausible and logical reasons which nay have contributed to a failure* Ifter reviewing these three reports, Frank, it is sy honest opinion that the U Hachiua did not contribute to the failure* It is sy opinion that the cold slab did not con tribute to the failure* I honestly feel, from reading Harry Schneider's report, that moisture in the mat, either accumulated from the spraying operation or absorbed after it vas applied developed too such weight for that vet sat and that's vhat caused the deism.! nation* Is Earry Schneider points cut, third paragraph on page 3, the first nine panels failed and the second five panels remained intact* There appears to have been sore heat ap plied on the job site during the spraying of the first nine panels than there vas dur ing the spraying of the second five panels* Isn't it plausible that this additional* heat created condensation problens within the sat which would have caused failure? * Is it* possible that the gases of combustion introduced added water vapor into the atmosphere which condensed within the -fiber mat and created failure? Please look over these three trip reports Frank. Schneider's report seems to make a lot of sense to me and at least he arrives at some conclusions - right or wrong* What are your conclusions? Did the heat hurt or help? What happened? jfoiuer cc: R. Schneider H. Gropp File