Google Bolt Torque specs.That wil get you close.
Joe K4XZ
>
> From: "Naveed at Hotmail" <conficious80@hotmail.com>
> Date: 2006/05/26 Fri AM 03:32:27 EDT
> To: <towertalk@contesting.com>
> Subject: [TowerTalk] torque tightening querry
>
> What should be torque tightening for the bolts 0f 20mm and 16mm ASTM A36 ,
> ISO GRADE 5.8 bolts , of a lattice structure which is 60m high and has to
> resist a wind speed of 150kph , lying in seismic zone IV , dead load in
> addition to self weight is the feeder cables and ladder wieghing 0.22kn/m ,
> 8 antenas weighing 23kg each, 4 microwaves wieghing 12kg each, having maximum
> allowable twist and tilt to be +-0.45 deg.Can you please tell me the source
> atleast. ?
>
>
>
> Regards
> NAVEED IRSHAD
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JOE PATRICK
SENIOR PLUMBING/MECHANICAL
INSPECTOR CITY OF BOYNTON BEACH
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