Towertalk
[Top] [All Lists]

[Towertalk] Pouring base of tower

To: <towertalk@contesting.com>
Subject: [Towertalk] Pouring base of tower
From: k4oj@tampabay.rr.com (Jim White, K4OJ)
Date: Mon, 02 Dec 2002 00:34:24 -0500
...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



<Prev in Thread] Current Thread [Next in Thread>