Re: Progress on my tractor\'s new home
Cool, look up the truss joists, that would be a great check on my assumptions. I won't tell you my conclusions till you formulate your own from the data. These are 16 inches tall, and span 28 feet. I don't know the series. I had that info, but don't remember where. The top cord is two pcs of 1/4x2x2 angle, the web is bent rod about 7/8", and the bottom cord is approx 5/16x2.5x2.5" angle. From memory. I could measure a pc if this doesnt fit the chart. When I looked them up it seemed obvious in the chart what size they were by the 16 inches tall and the 28 foot span. Maybe I will have to get you more infor tommorrow...
The 6x6 pressure treated posts are set 48" deep, and conveniently at that depth most of them are setting on sandstone. I know, that seems too good to be true, but that's how it worked out. The poles have a HUGE landscape spike driven into each of the four sides, up 6-10 inches from the bottom, sticking out of the pole 3-4 inches, and bent over a little so the pole fits the 12" hole better. Pole is dropped in, and mixed concrete poured in around to about a foot thick collar around the base of the pole. None necessarily under the pole. The spikes help the concrete bond to the pole. From what I have read, this should offer good bearing (even without the sandstone), good withdrawl resistance, and allow the pole to drain and not set in water its whole life. The hole is backfilled to the surface with 3/4" crushed rock.
Let me know what you find out about the TJoists, Thanks!