Grate loading capacity
Grate loading capacity
(OP)
I recently got a submittal from a contractor for an inlet frame and grate. It appears to follow the Maryland State Highway standard detail but I cannot find any detail on how the frame and grate dimensions were derived. Is it safe to assume that a frame and grate designed for a traffic area can handle a specified load (H-20 or H-25)? The State Highway Detail is MD 374.02.





RE: Grate loading capacity
No!!!!!!!!!!!!!!
I just ran into a similar situation where a grate manufacturer, in his HS tables, did not allow for the AASHTO required 22.5 kip concentrated load at the center of the span for the grate, which controlled. DO NOT believe every manufacturer's table you see.
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: Grate loading capacity
RE: Grate loading capacity
RE: Grate loading capacity
RE: Grate loading capacity
RE: Grate loading capacity
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RE: Grate loading capacity