Finalize Tread Fastening

that needs to be get to or something's crawled underneath you can always undo this and for the last step go through and secure all the decking pieces to all the joists that are underneath it the ones that are 16 in on Center the best method I found that works to speed up the process is to get a speed square or a right angle like this and walk through and find out exactly where the joist run that way you can just kind of go through with a drill and screws and set all the remainder of screws remember two screws per board per joist overall everything