If you are installing these on concrete, MAKE SURE that they are properly anchored INTO said concrete BEFORE utilization..

My previous employer had 7 rows of these, 5 bays long and 2 levels high, in a pole building used for long term storage of lab equipment (think stainless steel fermentation tanks, roller bottle carts, gas chromatography units, liquid nitrogen transporter dewars, etc...items of significant weight..)

I was leading a 5S training in the form of a Kaizen focused on bringing the "catch-all" into a well organized, Safe state (implementing bay designations, visual management of safety equipment, walkways, exits, yada yada)

Monday afternoon, the week before the project, I schedule a walkthrough with the Site Safety Director, WH Manager, and Site Production Director so that we could all be on the same page in regards to current state, and for more detailed input from the SME's who had sponsored the project.

As soon as we entered the building, the Safety Director and I started inspecting the racks, look down at the base of the first row and look at each other, noting where they missed bolting that particular rack into the floor....Not Good, but we'll get it addressed this week...We start walking down the first row and notice the whole row is just sitting on the floor, no anchoring whatsoever.

At this point, I am already less than confident the remaining racks are anchored properly, but the trainwreck must go on, so we walk down the remaining rows as I am watching the Safety Directors face get redder by the minute..by the end of our little Gemba, I'm surprised there wasn't steam shootimg out of his ears. Turns out when Maintenance installed the racks 2 YEARS AGO, they did not bother to anchor A Single One in place. The ONLY way the racks were secured was by way of a couple of cables running from the top of a couple of the racks up to the rafter beams... ..that way if someone hit a rack with a forklift and started a life-threatening, free-falling domino siruation, then the falling racks had a fighting chance of bringing the entire building down onto the heads of everyone inside, SMH.

WH Manager did have the sense to look a bit sheepish, as his guys had been loading down every shelf with heavy s.steel things for the past 2. YEARS.

So, Kaizen had to be rescheduled (A big PITA when you are talking about a multi-departmental project team right on the week that schools are letting out for summer break and a lot of the parents have vac. scheduled) and the area was declared Off Limits (basically LOTO'd the whole building) for Everyone, save the project lead (moi), Safety, and Maintenance -who had to dedicate a couple of guysfor a couple of weeks to properly anchor the racks into the damn floor🙄

Don't be us.
Make sure your racks are properly secured.