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 ----- Original Message ----- From: Eric Lemmon To: [email protected] Sent: Sunday, July 29, 2007 6:36 PM Subject: RE: [Repeater-Builder] Rohn 25g Tower Don, As others have mentioned, it is best to first attach the house bracket to the house, and then install the tower. I did exactly that at my house, with a 25G tower comprising two 10-foot sections and a 5-foot embedment section. Once I knew roughly where the tower would be, I put a 50-inch section of heavy aluminum channel behind the fascia board, and lag-bolted it to each of four roof trusses. I then drilled through the fascia board and the aluminum channel for several 3/8-inch stainless steel bolts to hold the house bracket solidly to the fascia board. Then I set a tower section in place to see where the hole needed to be, with the section perfectly plumb. Once the hole was dug per Rohn's foundation drawing, I added the rebar and set the embedment section in place with one tower section clamped into the house bracket. After triple-checking that the tower was plumb, I poured the concrete. Although I bought an electric concrete mixer from Harbor Freight just for this job, after going through 26 ninety-pound bags of ready-mix concrete, I was pooped! If I ever do this again, I am gonna hire a ready-mix truck and a concrete pumper to do the work. 73, Eric Lemmon WB6FLY -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Don KA9QJG Sent: Sunday, July 29, 2007 3:26 PM To: [email protected] Subject: [Repeater-Builder] Rohn 25g Tower On a Rohn 25g Tower that will be put on the Side of the House can anyone Tell Me if the Rohn House Bracket Has to be Mounted First, or can the Tower Be put up First. Thanks Don KA9QJG
