Last night my heavy duty steel shelving units complete with 3 months worth of food and water per person came crashing down as the legs buckled under the extreme weight. I rebuilt a heavier duty shelving system and restocked everything which took many hours to do. Luckily none of the food and water supplies burst upon impact with the concrete floor. I share this with my readers so you can learn from my experience. Make sure your shelves, no matter how heavy duty you think they are, really can support all the weight you are looking for them to support.
You can see all 5 of my post apocalyptic fiction books, 2 of my zombie fiction books and 1 of my horror fiction books on the left side of my blog page. Go ahead and purchase one or more over at Amazon.com. They are really quite interesting and entertaining to read if I do say so myself.