I tried something a little different in fastening a house bracket. I took 2, 4 Ft lengths of 3/8" all thread rod. I welded one end of each all thread to 1/2 of a 5" X 7" X 1/4" steel purlin clip. A purlin clip is a flat soft steel plate used to join 2 red iron steel purlins.
After welding, the contraption looked like an oversized fly swatter. I then drilled 2 holes in the fascia and ran the all thread from the attic outside the house thru the fascia board. Next I ran 2, 1/4" X 2 1/2" bolts thru each clip (plate against the truss) with the bolts going thru the truss and thru the clip. I used flat washers on the wood side of the truss. This allowed the all thread rods, securely fastened to the truss to go outside the fascia for attachment of the house bracket. I believe this gives a little more strength to the attachment. The tower was pretty much self supporting to begin with, but this gave an extra measure of safety. At 90 mph wind, each foot in length of the tower has 113 pounds of force exerted by the wind. This can be a formidable amount of force. Best success and 73, Steve NU5D Jack Taylor wrote: > Depending upon the wind loading on the tower, I would be cautious about > fastening *anything* to the fascia board of a modern day house! If your > tower > is self supporting, design the base to handle the load. Don't rely on the > house > else over time you may end up with cracks in the interior walls. If the > tower > is to by guyed, don't use the house for an anchor :-) > > But on the otherhand if it is a short tower with little wind load, have at > it! > > Jack - N7OO > >
