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RE: Precast beams

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Precast beams that are to receive a bituminous overlay should be roughened with a transverse broom finish on the top. The top corrugations of approximately 1/4" depth should be sufficient.
-----Original Message-----
From: Candi Anderson [mailto:canderson(--nospam--at)]
Sent: Monday, March 07, 2005 10:32 AM
To: seaint(--nospam--at)
Subject: Precast beams

Some of the specs I’ve looked at call for a skid-resistant grooved finish on driving surfaces of precast beams and rough casting for those that will have a concrete topping.  Does anyone have comments if the top of a precast member is going to have an asphalt overlay?  I would think we would still want a rough cast finish or some other “bonding” method (if so, what?).



Candi Anderson, P.E.