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Here we use 0.5 for western red cedar, 2800psi

corrosion is more than anything else. you need to make the pole footing a cathode. Also soil horizontal spring contant to control ground line deflection.

can't you get the footing reactions by hand calculation ?

@Transmissiontowers, say a standard pair of tension compression diagnals,in plane effective length factor 0.5, rz also 0.5, what is the factor you use for out of plane buckling unbraced length ? 0.7 ?

wood pole is not a manufactured product, the COV is about 20% for MOR under bending.this 10% is a very rough estimate and rather deterministic, it really depends on the pole species and the MOR you use.

Wood pole would rupture at 10% deflection, so it's a stress limit.

Or you could make an auto lisp macro.

If the plate is less than 1/2" thick and the bending angle is no more than 15 deg, cold bending should suffice, but you need a subsequent heat treatment for stress-relief.

So assume you want to check the capacity of an exisiting tower for whatever reason. You go out to the field and you find out these steel angles in dark brown color. You could certainly grind the surface to near white and use a caliper to measure thickness as long as this portion of the tower is...

Transmission towers, can you shed lights?

Can someone share tips on how to model an vintage tower in PLS TOWER, especially member thickness as a result of the loss of material due to corrosion ...

ASCE 111

Wondering if there's a ASCE manual for wood pole design, something like ASCE 10 for lattice towers ...

We use #18 quiet often. We only weld angle stub to base plate as the shoe footing.

Do you require impact property for welded steel, anchor bolt and hardware? What's their charpy test value?

What's the criteria of your emergency? For example, the peak load of 100 hours in ten years?

The inch and half roof deck probably is 18 Gage. That's the most extensively used type. The load table should be easily available from manufacture. Vertical load is taken by joist spacing, shear and uplift by fasteners.

I never knew that bolt could be installed without a locking device (washer) until I read your post. What if some lunatics or punk kids steal the bolt for fun? If the clamping force is too low. They would be able to remove the bolt with regular wrench ... Just some thoughts ...

I think the larger bolt head makes sense in that it enhances the local bearing. It's true tower bolts are predominantly under shear, but we use pretty tight clamping force. We use lock washer (helical spring) to secure the bolt and nut. The torque is 90 for 5/8 and 120 for 3/4

I take off my hat to you, 'Transmissiontowers'. This answer for sure is NOT from 'A storehouse of worthless information'. Because I am so used to A394 Type 1, I never bothered to compare the geometrical details until recently I had a situation where the A325 was being used when the connection...