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RE: FEM and Cables-Reply

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James,

Erectors of telecommunications towers have been installing prestress in
small cables for many years.  Generally, they use an in line Dillon meter
while they are tensioning the cable.  The tensions are confirmed by a
combination of calculations and vibration measurement.

I have found that guyed stack manufacturers and erectors need a little help
and guidance in the design and erection of guyed stacks. 

Harold Sprague
The Neenan Company


-----Original Message-----
From: James_F_Fulton(--nospam--at)RohmHaas.Com [mailto:James_F_Fulton(--nospam--at)RohmHaas.Com]
Sent: Tuesday, April 06, 1999 7:21 AM
To: seaint(--nospam--at)seaint.org
Subject: FEM and Cables-Reply

............. Also, in the field, I would like to know how 
the erector goes about measuring a specified cable pretension, particularly
a 
relatively small 1500 lb. to 2000 lb. required pretensioning force for small

(3/8' - 1/2" diam) cables, which I encounter with exhaust stacks.