Here's a very simple barbell rack I built for a friend of mine last year. Just cut pipe (chop saw), deburr with a hand rotary tool, and double up on a 3/4-inch plywood base with 3/8 x 3 ¹⁄₂ inch bolts recessed on the base bottom. My friend uses a 310-pound Olympic set and is a squat/press/pull-up type of guy. He says this rack is perfect for him, and, when he's not lifting, his wife hangs washed clothes on it! The rack easily assembles or disassembles with a simple Allen wrench.