Hi, i am renting a shoplot that has 18ft high ceiling, going to start renovations soon, it is an e-commerce fulfillment center + shop for customers to come self-collect/demo products. wondering if it is possible or even a doable idea to create a steel platform mezzanine? it's actually a 24*80ft shoplot ground floor that is going to be a warehouse, to oversee the whole operation. Also curious on how much something like below would cost...