"Alex" wrote in message
...
40 years in the trade ,have seen some crap building but never seen a 4x2
floor joist,loft joist yes , floor would be like a spring board and over
70 years would expect it to fail by now


Ho ho ho, my mistake it is 7" - amazing how you (I) misremember dimensions,
and by nearly 100%

7" on the 1st floor
4" on the ground with soldier walls making max span ~6ft

Good to keep you on your toes!
--
Mike W