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Re: Concrete form work

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Don't forget to call the EPA

Roger Turk wrote:

> As an experiment, take a styro cup, yes, the coffee cup type, and pour a
> little ammonia in it, the type that you use in blueprint developers, and see
> what happens to the styro cup.
>
> BTW, don't hold the cup over anything valuable.
>
> Discovered by accident, years ago.
>
> BTW, sandwich the styrofoam between two pieces of plywood so that the ammonia
> will not affect either the new or existing wall.
>
> A. Roger Turk, P.E.(Structural)
> Tucson, Arizona
>
> Ptlmikeda(--nospam--at)aol.com wrote:
>
> >>I have a new concrete building wall immediately adjacent to existing
> concrete building with an eight inch clear space in between.  I need to
> maintain a 3 inch seismic separation.  Does anyone know how the forming can
> be done between the two building walls?  Possibly styrofoam may be an answer
> but it will have to be left in place and it is not truly a seismic separation
> since styrofoam does have a certain compressive strength.<<
>
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