Overhead shelving needs to be mounted securely to ceiling beams. Run those long three-inch lag screws into the joists by using an impact driver. Always pre-drill the holes so that you do not chance to split the lumber which may weaken the joist.
A cordless drill can install lag bolts, perhaps with a bit of assist of candle wax on the threads, but it is significantly better to work with an impact driver. You should have a socket adapter for your impact driver so that they can attach sockets from a socket set.
A stud finder with a double layer scan option is critical for finding studs inside your ceiling. Make sure to use best professional stud finder for the purpose you are using. The reason being that the ceiling may have extra layers of sheetrock, popcorn texture, or insulation that disrupts the basic stud scan. I do not recommend you fight with a hole punch, coat hanger, and/or long slender nails in an exhaustive effort to locate the center of the beams. Many mid-quality stud finders have a deep scan function. Check the information that comes with it for how to use a deep scan setting. You can find the model with a digital display which will make very clear the location of the edges of your joists are, and they often include light and/or sound to point out the center of a stud.
Wide measuring Tape
A wide measuring tape can be extended to longer distances while not folding. Get a tape broader than 1″ wide. Even though it’s probably the handiest tape measure, the cute tape measure in the color-matched household tool kit isn’t adequate for this installation. High-quality tape measures also put special colors on 16″ increments for wall studs, which may be applicable if your ceiling beams are also spaced 16″ on center. The foot intervals ought to be highlighted on any tape measure.
Do not attempt to use a claw hammer if directions advise a rubber mallet. You may end up denting, mangling, or otherwise damaging the steel rack.