Fire blocking designed to slow down the spread of fire from one floor of your house to the next.
Fire blocking between floor joists.
This means that every 10 feet along a wall you will need to close the gap between the wall stud and the concrete wall from floor to ceiling.
The drywall that is your ceiling is a form of fire blocking.
Typically inspectors are looking for fire blocking in the gaps between the foundation wall and the framed wall of your basement specifically at the top of that wall area.
It s purpose is to prevent the spread of smoke and flames from reaching the bottom of the 1st floor of your home from the basement area thereby burning through and spreading to the 1st floor of the home.
Building code requires the use of blocking for floor joists that exceed 2 inches in width by 12 inches in depth.
Blocking is also needed each time the joist overlaps with a center beam and every eight feet between two joists.
A deep joist is classified as one that is.
Horizontal basement wall fire blocking fire blocking must also be installed every 10 horizontally along the wall irc 302 11 1 2.
This video shows you the requirements for blocking of deep joist in both natural timber and i beam and lvl joists.