...ANOTHER COMMERCIAL SITUATION WHERE MULTIPLE PIECES OF CONCRETE ARE
USED IS PILINGS
There are pilings made out of reinforced condrete driving into the
ground which end up supporting commercial structures....
Sometimes these pilings have to go very deep before they hit bedrock and
become solid enough that the weight of a building will not cause them to
sink and the building fall over....
These are typicall reinforced concrete sticks.....they are pounded into
the ground like XXX ground rods when they get so low that they run out
of rod and the ability to withstand weight is still ionsufficient they
glus on another one... that's right - with construction epoxy the stick
another one on the end of the embedded XXX(s) ... and if that one ends
up being driven its entire length and they still don't have enought
resistance, on goes another....
Construction epoxies are not that uncommon anymore - while the
quantities needed for a tower pad of two pour is significant enough to
buy in bulk - freqently used anchoring systems for threded rod used to
anchor the base of a house wall is sold in caulking type tubes for use
with a special gun that handles the two part mix bia two plungers acting
in unison to squeeze out the adhesive and hardener simultaneously when
the handle is squeezed (smaller sized offerings are in double barrle
syringes for "one bolt" emergency operations) - this has becoime cheaper
than the old school method of setting anchor bolts in the wet slab and
then drilling the plate at the bottom of the wall to match....a guy in
the field with the rigth tools can march right down the line drilling
the locations for the "to be eposies" thraded rods....
As is true of most adhesives - when correctly applied they are actually
stronger than what they hold together!
73,
Jim, K4OJ
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