Pole reinf. Hand hole welding procedure 1

[A.F]

Reinforced handhole in a pole
1 40cm dia pole,thickness 8mm hole 15*15

Case 2 1m dia pole thick 10mm hole 20*20

What tyoe of welding recommended between pole and reinforcement. Note reinforcement rim depth around 8cm

 

Pole reinf. Hand hole welding procedure

You'd better unpack that for us; I have only guesses as to what it could mean.

"Everyone is entitled to their own opinions, but they are not entitled to their own facts."

 

[A.F]

Dear ironic
Actually strret light pole or telecomm. Monopole has such openings

 

[MintJulep]

Perhaps English is not your first language.

A good sketch could overcome the existing communication difficulty.

 

[A.F]

Valmont website has examples of street light pole with handhole

 

[Tmoose]

Some flavor of aluminum, steel, FRP or bamboo ?

 

[A.F]

All high tensile steel

 

[dauwerda]

AASHTO's "Standard specifications for structural supports for highway signs, luminaires, and traffic signals" shows that it should be detailed with a PJP groove weld with fillet overlay (with unequal legs) in the commentary. See below from the commentary:

 

[gtaw]

It would be nice if they knew the fundamentals of welding symbols. I believe AWS A2.4:2020 is the latest revision. The welding symbols shown by the sketch is so wrong in so many ways.


Best regards - Al

 

[dauwerda]

I'm glad I'm not the only one who thought that, gtaw. There is a new edition of the standard out that I don't have - maybe they have fixed it?

 

[gtaw]

It isn't the standard at fault, it's the detailers that don't take the time to read and understand what it says. The sad part is that the standard is mostly pictures, almost like a comic book.

My experience has been that the reinforcing flange to the pole is a CJP bevel groove weld with a reinforcing fillet. The volume of the flange is equal to the volume of metal removed from the pole.

Best regards - Al

 

[dauwerda]

I am surprised to hear you say that your experience is that it is a CJP and not a PJP, I often see hand holes at mid height of poles (next to light brackets mounted at mid height) where it would be very difficult or impossible to get any backing in place - at the base it may be a bit more doable, depending on the size of the mast. While certified welders that can weld full pen without backing may be commonplace in the petrochemical industry, it is pretty unheard of in the utility industry.

 

[gtaw]

Point well made. I was thinking along the lines of a manway near the base of the mast, not a handhold.

Best regards - Al