Hi .
I would like to have two clothes rods top and bottom. Holding up the two rods I would like to support both clothes rods with three rods hanging down from the ceiling.
My question is what bolts do I use and will the weight of the clothes be too much for the bolts to hold.

The wedge anchors shown here Concrete Anchors, Fasteners, and masonry screws. Buy online. would work at 1/4", providing your going into solid concrete. Tension is greater than 1400 lbs.

You could use Unistrut to build your rack. Welcome to Unistrut, The Original Metal Framing