Re: [WISPA] Rohn BX Tower

Mon, 22 Aug 2005 05:35:01 -0700

Portland cement has no gravel.  I'll mix it 4 parts to one.  So.....those 15 94 lb bags are like 60 94 lb bags.  I had figured I needed 1.28 yards for the hole I dug.  But now that I have the specs I will see how big the hole has to be.  I will only put a CPE on this tower.  Nothing huge.

Brian

Mark Koskenmaki wrote: 
15 bags of cement won't mean squat in a hole that big.




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----- Original Message ----- 
From: "Brian Rohrbacher" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Sunday, August 21, 2005 7:21 PM
Subject: [WISPA] Rohn BX Tower


  
I dug a hole 32 inch square by 42 inches deep yesterday for a rohn bx
tower.  It is 5 sections of 8 ft.  I just got 15 bags of portland cement
    
and will add my own gravel.
  
I was thinking about three 1 1/2 inch pieces of pipe stuck in the concrete
    
to bolt the tower legs to.  I will
  
thread and put couplers on the pipe at 22 inches so they can't move.  I've
    
got some re-bar to chuck down in the hole too.
  
I've got 3 8ft ground rods and will bond with #4 bare stranded wire.  I
    
picked up a load of grade 8 bolts,
  
washers, and lock washers for bolting the tower together and to the pipe
    
stubs.  Anyone have any suggestions
  
for me?  This is my first tower.  I will pour tomorrow afternoon.

brian


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