Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Recent content by Raja6

  1. Raja6

    Design and construction of 126m tall flagpole Design parameters

    Hi Old runner, Thanks for your post. ANSI/NAAMM FP-1001-07 – Guide Specification for Design Loads of Metal Flagpoles- allows 33% increase in allowable stress for bending and shear. When wind is the predominant force in the case of Flagpole( when compared with Dead load and live load)how can we...
  2. Raja6

    Design and construction of 126m tall flagpole Design parameters

    BridgeSmith Happy new year to all. Thanks so much for all your valid inputs. After so many meetings and discussions with the client and the designer of the flagpole, the design is not finalized yet. As you had suggested the only way forward for this scale and complexity of flag pole, with many...
  3. Raja6

    Design and construction of 126m tall flagpole Design parameters

    JStructsteel, Please acquire a copy of the attached standard for wind turbine supporting structures. https://files.engineering.com/getfile.aspx?folder=3afefe5c-498a-433f-a38b-6431a9e432ab&file=Wind_Turbine.JPG
  4. Raja6

    Design and construction of 126m tall flagpole Design parameters

    Little Inch, Yes you are right. I agree.
  5. Raja6

    Design and construction of 126m tall flagpole Design parameters

    Clerical Forensics, I also received the same reply from them. It seems that FP 1001 07 is the latest one. All the best.
  6. Raja6

    Design and construction of 126m tall flagpole Design parameters

    JStructsteel, https://en.wikipedia.org/wiki/IEC_61400#:~:text=IEC%2061400%20is%20an%20international,(IEC)%20regarding%20wind%20turbines. The above link might be useful. Take care.
  7. Raja6

    Design and construction of 126m tall flagpole Design parameters

    BAretired, Thanks for your input. Yes you are right. Vortex shedding phenomenon is important in the design of flagpoles. It can take place even in the wind speed between 15 to 60 km/hour. Strake may be one of the mitigation measures. But the provision of dampers at appropriate heights of the...
  8. Raja6

    Design and construction of 126m tall flagpole Design parameters

    Clerical Forensics Please note that in ASCE7-16 and ASCE7-22, FP 1001-13 is referenced(see copy attached). The basic wind speed map available in FP 1001-07 is reproduced from ASCE7-05. ASCE7-05 uses importance factors I (see table 6-1) for wind loads for category I, II,III and IV as 0.87 or...
  9. Raja6

    Design and construction of 126m tall flagpole Design parameters

    Little Inch, Thanks so much for your input. I have already received the information I was looking for from this forum and from other forums. Thanks somuch.
  10. Raja6

    Design and construction of 126m tall flagpole Design parameters

    azcats, I am looking forward to receiving your valuable input. Thanks.
  11. Raja6

    Design and construction of 126m tall flagpole Design parameters

    Bridge Smith, Thanks so much. Yes you are correct. Typo. It is not 41st edition. It is 6th Edition with interim revisions. Standard Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals, 6th Edition, with 2015, 2019, 2020, and 2022 Interim Revisions.
  12. Raja6

    Design and construction of 126m tall flagpole Design parameters

    Aesur, I am trying to sort out the applicable codes and standards and their latest versions to avoid mixing of basic requirements and provisions. Thanks so much for your valuable suggestions.
  13. Raja6

    Design and construction of 126m tall flagpole Design parameters

    Bridgesmith Thanks so much for your very valuable sharing/casestudy. For your information AASHTO has recently released their 41st edition in the market. I will definitely refer. Two things are important according to you(galloping effect and use of dampers as a solution) Fatigue cracks to be...
  14. Raja6

    Design and construction of 126m tall flagpole Design parameters

    JStephen More than the aesthetics, the safety is very important. With flag if it deflects, the torsional forces from flag induced in the pole would add additional stresses. So it is better to restrict the maximum deflection in the design i feel.
  15. Raja6

    Design and construction of 126m tall flagpole Design parameters

    Gentlemen I contacted NAAMM and they confirmed that NAAMM FP 1001 07 is the latest version. and it is not so convincing to note that this latest guide published in 2007 refers to only ASCE7 05 for wind load.
See more

Part and Inventory Search

Back
Top