Wind Loading Tutorial AS1170.2 2011
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- čas přidán 19. 08. 2019
- Introduction to AS1170.2 Wind code. Basic overview of code with worked example.
Note: a new version of AS1170.2 is now published (2021). There are some differences, but the basic theory is the same. A good summary of the changes is here • Video
In mid 2021 a new version of the wind code was published. This included some significant changes include renumbering some of the clauses and all of the appendices. To hear the head of the code committee explain the updates, you can see here: czcams.com/video/6gnRaAN9SOY/video.html
We need more of these videos!!!Keep up the good work!!!
Thank you
Thank you Peter for your presentation!
This is a fantastic tutorial! well done very helpful
Thank you! Cheers!
Thanks, more basic explanation and straight to point. Appreciate if you can do one for earthquake loading estimation
Thank you so much for this great content.
Well explained!
Hi peter When you get a chance, could you please discuss AS/NZ 1170.5 and 1170.4. There are not much literature on this.
thank you sir.
Thank you very much
Very informative! Could you do a video on load combinations ?
How can I determined Internal pressure in Partially enclosed building in AS1170.2? I see almost table in this standard is used for enclosed building. I design factory building.
.~....I understand. Using factor in table 5.1B by considering percentage dominant opening.
Amazing video peter just wandering will my pressure on wind ward wall be negative if it is permeable
sorry for slow reply. Permeability is a pretty big range, but generally the answer is yes. you can have negative pressure on a permeable wall
29:15 hoardings, free standing walls
How can we calculate the aerodynamic shape factor for a telecommunication antenna, the shape is similar to the prismatic shape but the l/b will not exceed 8 as per section E2.1 so which equation can we use?
If l/b does not exceed 8, you are dealing with a relatively fat structure. you need to calculate the force on each individual element. Use the drag coefficients in tables E3, E4, E5 (AS1170.2 2011)
Also note that there has recently been a new edition of AS1170 released (2021) which has renumbered all the appendicies, so moving between codes takes some care.
Listen plz can you tell me what is speed , temperature , viscosity of australia climate??
the speed of the Australian climate? I'd say light speed.
More seriously, I am not sure what you are asking. Australia is a big country, so the temperature varies alot, and climates don't really have speed or viscosity.
Hello, my name is marlon, I'm a master's student in Brazil, I'm conducting a research comparing the main world standards of wind action, but I'm having a lot of difficulty finding AS1170.2 2021, would you have it for me?
Thank you in advance
Hi Marlon, The Australian standards are expensive (too expensive in my opinion) and tightly controlled. you can buy a copy (electronic or print) from this link. I can't give you a copy. Warning the website is very clunky and poorly designed. au.i2.saiglobal.com/
noice
22:10 section 5
In mid 2021 a new version of the wind code was published. This included some significant changes include renumbering some of the clauses and all of the appendices. To hear the head of the code committee explain the updates, you can see here: czcams.com/video/6gnRaAN9SOY/video.html
Hi Peter, thank you for your video, I found that C(fig) is quite hard to determine. Can we use Etabs to determine C(fig). I am doing a university project and we need to design wind for irregular shape building at 30m height. Doing it manually would take days.
@@tuphannguy3n There are a number of tools to help you work out the various parts for the wind code, including Cfig. However, I would greatly discourage you using it in this instance. The intent of your university course is that you understand how wind puts forces on a structure and how the structure reacts, not that you can use a tool. Respectfully, any monkey can plug numbers into a design tool and get a result. That is not why you are at university. An engineer is the person who understands what is going on and and why the forces are what they are. I highly recommend you do it manually in this case, as that will help you understand what is going on. Then in the real world you will be able to design structures confidently and correctly.
Ask for help from your tutor/lecturer. My experience as a uni lecturer is that we wish the students would ask for help more often than they do.
@@psthew Thank you for your response. Unfortunately, as far as my concern, wind design wasn't extensively taught at my university. However, I have done earthquake design loading. I could manually determine other coefficients in wind design but found it is quite difficult to determine C(fig). This is the first time I have done wind design. (I did not come across wind design before). But I will consult with my lecturer/tutor. Thank you for your reply. I really appreciate it.
@@psthew Hi Peter, when you calculate the Bending moment at the base you used M=ql^2 / 2. Out of curiosity, why don't you use V* multiply by Height to get the overturn bending moment, given V* is base shear?
@@tuphannguy3n It ends up being the same thing. V* is from the wind pressure and the height, so V = ql. The wind force acts in the middle of the wall, (l/2) so the result is M = ql^2/2