[log in to unmask] wrote:
> In a message dated 1/27/2009 4:11:55 P.M. Eastern Standard Time, 
> [log in to unmask] writes:
>
>     Interesting question. *We see masonry buildings with no expansion
>     joints right through the 1960’s* ( the heydey of cavity wall white
>     glazed brick construction) Both my partner Doug Cutsogeorge and I
>     think a good guess would be early in the 1970’s perhaps 73 0r 74.
>      A good way to confirm this would be to question the Brick
>     Institute of America BIA to see what year they first started
>     recommending expansion joints in brick construction.  
>
>  
> Anybody know when expansion joints became de rigeur?      c
c,

Do you mean when were they introduced into new design, or when that they 
began to be retrofited into existing buildings? Earliest evidence of 
retrofit, or when did retrofit reach a peak in implementation?

As to retrofit as far as NYC is concerned I think it would have to date 
corresponding to after the 1970s economic slump and when property owners 
began to re-invest in their buildings. My gut feeling is that 73-74 is 
too early.

][<en


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