[TheForge] Wooden Beam strength for Rigging

[Woolley]

> are the individual rafters one piece or are they spliced?
> if they are spliced how are they spliced?
> do you know how the rafters are attached to the walls?
>
One piece, sitting on top of masonry walls.


> are there any support columns in the 25ft span?
> are the dimensions that you give of 3x11.5 inches close?
> the reason i ask is that a 4x12 would actually be 3.5 by 11.25 inches.
> i assume the rafters are pine.
>
>>No support columns, true dimensions 3x11.5, more than likely pine.



>> BTW I poured a footing for a gantry crane elsewhere in the shop.


I should have said jib crane. I don't think I have room for a rolling 
gantry.