Proper care of your tools.
A single Vortabrush can typically clean between 200-300 concrete holes, but what will make your new Vortabrush last longer? #1- Correct product Of the few times
I am an ICC/WABO Special Inspector and in 15 years in the industry have witnessed many thousands of holes being cleaned. I have watched the frustration of contractors. And I have nearly fallen asleep many times watching this slow and boring process. Then it is frustrating to learn that even when done as directed there are still failures due to lack of cleaning. It is time for the industry to step up and allow change by adopting the use of the Vortabrush.
REPORT FROM THE WORLD OF CONCRETE 2018
Self-Cleaning Vacuum Drill Bit Systems.
Do they pass inspection in the field?
That is a hard question to answer with a simple response.
First let’s look at the claims that these systems present. Their ESR’s claim that “without any further cleaning after drilling”, that structural epoxy can be placed with all thread or rebar anchors.
Is that “always” the case? Not according to John Nehisal and Michael Morrison of the American Concrete Institute. They stated that: “If the holes are found to be dirty after this initial cleaning system is used, further cleaning may be required by the Special Inspector. Using the standard blow, brush, blow, brush, blow method.”
Does this happen on jobsites where these systems are used? Ask most Special Inspectors and they will say “yes”. It is not uncommon for drilled holes to be found in a dirty condition even after these “approved” vacuum drill bit systems are used.
The makers of these systems will pull out their ESR report and protest. But according to Mr. Nehisal and Mr. Morrison, the inspector has both the right and the obligation to ensure that the holes are properly cleaned before the anchors can be placed.
My question is; In the case of failure, who is liable? It will fall on the contractor and the drill bit vacuum system maker if they have refused to clean the holes any further if asked by the Special Inspector. Even though they have a “report”, do they really want to accept this responsibility?
Jaimie D. Gordon
ACI, ICC, WABO Special Inspector (Retired)
A single Vortabrush can typically clean between 200-300 concrete holes, but what will make your new Vortabrush last longer? #1- Correct product Of the few times
THE BASICS-Always wear proper eye protection. 1. ) Attach air hose from compressor. Use a minimum of 80psi air pressure for attachment to Vortabrush. 2.)