Wednesday''s Ask the Experts question from a cleaning professional on the International Custodial Advisors Network (ICAN) "Ask the Experts" page: Recently, I instructed 24 students who were required to perform top scrubbing/stripping & waxing for certification with the options of using "floor models" built on plywood w/cement boards for stability...I opted against it - my overall concern was the subsequent rotting of the underfloor which could possibly cause a cave-in and therefore injury. Given that this was a rotating class that conclude with approximately 40 plus students with a time frame of 10-11 months, what is the probability of such an incident happening?
I probably should have written back for clarification, but since I did not, I''ll qualify my judgment.
First off, I would picture the "floor model" you describe as some sort of elevated platform within an existing building. It is framed and then covered with 4 x 8 plywood sheets and cement board on top of that. Then VCT or sheet goods have been glued down on the subsurface so that it looks like a floor, but elevated. Since you can''t teach VCT maintenance on bare cement board, this picture should be accurate. Now, your question is whether or not you need to be concerned with ... — Lynn E. Krafft, ICAN/ATEX editor
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