Surveying a building in NYC- maybe 100 yrs old corner of 58th & Lex.
the client is convinced that the outside wythe is separating from the
inner double brick and in danger of collapsing on 58th St.
I explain that no that's just a cavity wall construction, that's how
it's done-
He asks why and I'm really not sure...
Why is it done that way???
Drew