Schifflerized Angles
Schifflerized Angles
(OP)
Does anybody know anything about Schifflerized Angles??? Latticed triangular base steel towers have been used as communication structures. The legs of these towers generally consist of "schifflerized" angles (90º equal leg angles bent to 60º)





RE: Schifflerized Angles
If you have PLS-TOWER, it will analyze the tower if you can get the leg properties.
_____________________________________
I have been called "A storehouse of worthless information" many times.
RE: Schifflerized Angles
Thank you
RE: Schifflerized Angles
The other problem is finding the rx, ry, and rz for the shape plus find out where the neutral axis has moved. I guess I would start with google to see if anyone has the properties tabulated or supplies them.
Have you read the EIA/TIA 222 rev F or G to see what they say?
I have a friend at work that used to work for Rohn and I'll ask him about the angles. Rohn was/is a producer/designer of these 3 leg M/W towers but I think they used pipe or solid round legs with welded gusset plates.
Do you use TOWER from Power Line Systems? If you do, they have good tech support and can tell you where their other customers go to get properties.
_____________________________________
I have been called "A storehouse of worthless information" many times.
RE: Schifflerized Angles
RE: Schifflerized Angles
TIA/EIA 222 F-G doesn´t study this angles deeply.
Dou you know any machine to roll this angles?
Thanks
RE: Schifflerized Angles
_____________________________________
I have been called "A storehouse of worthless information" many times.
RE: Schifflerized Angles
RE: Schifflerized Angles
At the moment, there are two big problems. The first one is that I can´t find a proper software to check this structures by ASCE 10-97 code, and the second one is that i don´t know where to find this angles, or the machinery to bent 90º Equal Leg Angles.
RE: Schifflerized Angles
RE: Schifflerized Angles
H.C. Jeffries Tower Company, Inc., located in Porter, Texas, (www.hcjeffries.com) fabricates all types of towers, including Schifflerized angle towers. They have a Schifflerizing machine in their fabrication plant and have designed & fabricated many Schifflerized angled towers, both guyed and self supporting. They also have a CNC Angle Master in-line with the machine so they can punch holes, shear to length & punch part numbers in. They are also willing to sell angles to other fabricators. All the contact information can be found on their website.
RE: Schifflerized Angles
_____________________________________
I have been called "A storehouse of worthless information" many times.
RE: Schifflerized Angles
RE: Schifflerized Angles
_____________________________________
I have been called "A storehouse of worthless information" many times.
RE: Schifflerized Angles
Perhaps it would be better to heat members at local position, bend it by a press with help of jig design.
I am sure all software will ( STAAD, RISA etc) will be able to handle design once properties of members are entered in data.