Floor decking is 1/2" Plywood (1970 era)
Full length joists are 15'10" x (2" x 10")
Sliced Joist are divided midway @7'10"
Joist spacing from stairwell is:
Full joist @ 0", 6', 6'6", 7'10", 8'2", then 16" oc.
Spliced joists are sistered to full joists at 0" and 6'.
Spliced joists are also at...