In order to properly install joist hangers, you will need a few tools and supplies. Before you begin, make a checklist and go over it, making sure you have everything you need to get the job done in a timely manner.
Assuming that the floor joists are already cut to size, the tools you will need involve the positioning and installation of the joist hangers. That requires a durable claw hammer, tape measure and pencil.
First and foremost, you will need the right size joist hangers. Residential floor joists are typically 2x8, 2x10 or even 2x12, so that requires joist hangers of a corresponding size. The nails required will be specified on the documentation for the joist hangers. Ensure you have the right size nail and the right number of nails. The wrong type or number will decrease the load bearing capabilities of the joist hanger.
Review the floor joist spacing specified in your blue prints and match it accurately. Floor joist hangers often have a top lip that lets you balance them atop the rimboard in their exact position. For those that do not, though, you must determine their position accurately so that the joists sit flush with the top of the rim. Install the nails in the provided openings in the rim joist as specified in the documentation.
Once your checklist is made and you have the necessary tools and supplies, you can get to work hanging the joists.