I think they're saying 2 inches is fine, 4 is overkill, what you really want to be looking over the engineer's shoulder about are the specs for the setting bed and the bidder qualifications so you'll get someone to do it right.

_____________________________________
Dan Becker, Division Manager
City & Regional Planning Division 
Raleigh Department of City Planning 
919/516-2632



-----Original Message-----
From: The listserv where the buildings do the talking on behalf of [log in to unmask]
Sent: Thu 11/13/2008 8:29 PM
To: [log in to unmask]
Subject: Re: [BP] Municiapal   stone
 


In a message dated 11/13/2008 9:07:57 A.M. Eastern Standard Time,  
[log in to unmask] writes:

Ralph; I am with John on this one; 
any long stone or  big square stone .
.all it takes is one piece of gravel to find its  balanced  fulcrum 
underneath and she will snap like a candy bar   when stood on (been there done that) 
The substrate or the setting bed is  the key; 
Outdoors 
3" rock dust; (with fines)    or rock  dust and hydraulic lime  wet to the 
consistency of beach sand but
for  heavy traffic areas (working surfaces )  
; you cannot have big  joints; you want tight joints 
This is nice, but my question was how thick the slabs  should be?  Or are you 
saying it doesn't matter?  Which makes no  sense to me.
Ralph



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