I'm designing a wharf/dock for a neighbor and am using the round log table in the ff beam calculator section. Am stumped, sort of, on the "min dia to meet 1/360 deflection" Not sure if that's mid dia or top dia. Anyone here know? Silly question of course you know! Pls tell me!

Also, I'm pretty sure the "total load on beam" would be the load not including weight of beam but not sure on that either

And would the total load assume evenly distributed or concentrated?

Thanks for any/all help