been looking at a series of lollycolumns supporting a finished addition over a crawl/open space with foundation on one end of the joist span and this series of lollycolumns on the other.
it is out on the cape (the one in mass.) so there is salt air to deal with. the lollies run right into relative dry sandy soil - presumably onto some kind of footing around the frost line (which out here is probably 2 feet or less.)
they have been in place since woodstock . . . eer about 69. painted above ground but at and below ground a good deal of spalling.
No obvious displacement or rust through but if i took a slag hammer and started aggressively testing, not sure what i would find.
try to see what relatively precise methods anyone might have for gauging degradation/thinning toward nothing of the outside steel and at what point to consider replacement.
don't know if drilling small hole and looking through a magnifier is good technique and then silicone it up or . . .
and what thickness/thinness of steel should one get worried about.
indeed, what in your crowd sourced experience are the failure modes if there is no evidence for lateral displacement from poor drainage and freezing etc.
thanks,
brian
it is out on the cape (the one in mass.) so there is salt air to deal with. the lollies run right into relative dry sandy soil - presumably onto some kind of footing around the frost line (which out here is probably 2 feet or less.)
they have been in place since woodstock . . . eer about 69. painted above ground but at and below ground a good deal of spalling.
No obvious displacement or rust through but if i took a slag hammer and started aggressively testing, not sure what i would find.
try to see what relatively precise methods anyone might have for gauging degradation/thinning toward nothing of the outside steel and at what point to consider replacement.
don't know if drilling small hole and looking through a magnifier is good technique and then silicone it up or . . .
and what thickness/thinness of steel should one get worried about.
indeed, what in your crowd sourced experience are the failure modes if there is no evidence for lateral displacement from poor drainage and freezing etc.
thanks,
brian
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