900 sounds kinda high to me, that would be heavier then water.. Probably more like 500-600 . I just put up a 6"x12.5"x 17' Doug Fir (air dried for 6 months) header, my BIL and I carried it and set it, it weighed maybe 300.
Well,maybe our ridges were not as dry as yours.......
The 28 footer I was referring to was kinda wet.I took a foot long off cut from the same stock and plopped it on a bathroom scale....30.5 lb's if memory serves me right.
The crane we used was designed for putting up signs....full extension on the boom gave it a max of 1000 lb's...so we figured the biggest pretty close.opcorn: