Blocking typically refers to the structure that prevents the joists from twisting, which would be a concern over a load bearing beam. A solid piece of wood, often the same material as the joists themselves, is installed perpendicular to the joists without any gaps (e.g. I joists would use a piece of I joist for blocking). Two 2x4's installed in an X could also be done, and I've seen that with engineered joists, but check with your local building codes to be sure it complies.

I could also see blocking refer to additional vertical members (2x4's) to carry the load from the beam up to another load bearing object above the floor (e.g. a column). The last type of blocking I can think of would be fire blocking to prevent fire from traveling through the ceiling between parts of the home, though it's unlikely you'd see this requirement in a single family structure outside of a garage.

Like Tester101 says, call the inspector and ask for clarification, they should be happy to provide it.

What does blocking refer to in relation to floor joists?
Does anyone was able to define possible 'enum' values in Model tab in swaggger version 2.0 ? Example here: http://petstore.swagger.wordnik.com/#!/pet/addPet has a enum option for 'status' property but that example is using version 1.0 of swagger (according to swagger version defined in JSON object). I've tried to achieve the same in version 2.0 but no luck, not sure of documentation is correct for this.

Any hint on this? 
