Folks - for a 2x2x4' Rohn 25 base concrete foundation, do I need to use a concrete vibrator during the concrete pour? dana _______________________________________________ ____________________________
A vibrator is the best way to go, however as long as you are diligent you can use a length of 2x4 to tamp the concrete every 6 inches or so of lift as the concrete is poured. Hard to keep up with a f
Dana: For a small hole like that you probably can get away with poking at the concrete with a 2x4 piece of wood as it's being poured. The goal is to ensure there are no voids or air pockets in the co
When my base was poured (by a concrete professional) it was actually pumped. The guy said that if you have the concrete mix correct and the flow rate right, you can get a "standing wave" of the mix g
Vibrating with a machine or rodding with a stick does more than just fill voids. Properly done, it will float excess water to the surface where it can drain off or be skimmed off. Most of the water i
A vibrator is to get rid of any air pockets in the pour. The need for a vibrator depends on how dry the mix is and how it's poured. Often the new, high strength concrete is poured with a minumum of
That was my point as well. Unless the pour is large and has a lot of rebar, its over kill. _______________________________________________ _______________________________________________ TowerTalk ma
Most California Building codes for counties and cities require that any concrete pour 24" or more deeper must be vibrated. All the towers that I've installed in California have had a building inspect
Bob and TT: What you need to do is have the engineer specify and design for less than 3000 psi. The special inspection section of the CBC ( California Building Code) (essentially the 1997 UBC) doesn'