Thank you very much for these videos on prestressing. I'm doing a research paper on the topic, and these videos really expanded my knowledge on the subject and actually inspired additional ideas of what to write about. Keep up the good work!
hello Rabin..do u have any videos about external prestressing design?i just want to know the design diffrence between external and internal prestressed.
Hi Izuwan Sorry I do not have that video at present. But I am in process of making a whole new set of lecture videos. I hope to include the one you asked for as well. Thanks. Rabin
In prestressed concrete beam, why rebars are provided or added although prestressing tendons are there to strengthen the compressive capacity of concrete beams? What are the real reasons?
Reinforcing steel bars can be used together with prestressing tendons in concrete structures. Prestressing tendons does serve as tensile steel in the beams, however, if more reinforcement is required normal reinforcing steel can be used as well.
My interactive iBook "The World of Concrete" is available on iBook store now. First 20 who sends me an email at rabintuladhar2013@gmail.com will get a free download code. To find the book, in your iPad or iPhone go to iBooks app and search for "The world of concrete". You can also click the link below: "geo.itunes.apple.com/us/book/the-world-of-concrete/id1277052635?mt=11" First 20 to send email to me (rabintuladhar2013@gmail.com) will get a free download code.
Hi Neoro, prestressed concrete structures do need to regular inspection and maintenance if required. Hence, external prestressing has become popular these days in bridge construction as inspection of external prestressing wires are much easier and it is easier to replace them as well.
That depends from use method, in pre-tensioned and bonded post-tensioned concrete there is no possibilities of replacing tendons, and it is virtually maintenance free (there was problems with bonded post-tensioned bridges in Europe due to poor workmanship or quality control during construction). In unbonded post-tensioned and external post-tensioned concrete there is need for regular maintenance and replacing tendons if it is needed (external post-tensioned concrete have many advantages over other methods and can be retrofitted to existing constructions or used to correct problems from other methods)
Thank you very much for these videos on prestressing. I'm doing a research paper on the topic, and these videos really expanded my knowledge on the subject and actually inspired additional ideas of what to write about. Keep up the good work!
the basic concept is clear now, finally, thank you it was very helpful
Thank you for your post. Very inspiring.
th-cam.com/play/PLtElM8k8rEY3C7PkxzICkMXRz7687C_6F.html, refer this one also
Very clearly explained by you sir, thanks a lot
love this lectures..wish u could be at ecu
very detailed and comprehensive lecture!
good work bro....but how do you draw on this video..... awesome work thanks...😎😎
Do you have the pdf version of all the lectures in prestressed concrete ?
hello Rabin..do u have any videos about external prestressing design?i just want to know the design diffrence between external and internal prestressed.
Hi Izuwan
Sorry I do not have that video at present. But I am in process of making a whole new set of lecture videos. I hope to include the one you asked for as well. Thanks.
Rabin
Very nice
in simple terms what would you say is PRESTRESS AND STRESS BEAM?
In prestressed concrete beam, why rebars are provided or added although prestressing tendons are there to strengthen the compressive capacity of concrete beams? What are the real reasons?
Reinforcing steel bars can be used together with prestressing tendons in concrete structures. Prestressing tendons does serve as tensile steel in the beams, however, if more reinforcement is required normal reinforcing steel can be used as well.
Actually I am tying to find some problems with prestressed concrete for cable stayed bridge ( like small topic )
nice and useful...
this informations are really helpful
Hello Rabin
i need this PDF ?
Cna u give me a link to Download it ?
My interactive iBook "The World of Concrete" is available on iBook store now. First 20 who sends me an email at rabintuladhar2013@gmail.com will get a free download code. To find the book, in your iPad or iPhone go to iBooks app and search for "The world of concrete". You can also click the link below:
"geo.itunes.apple.com/us/book/the-world-of-concrete/id1277052635?mt=11"
First 20 to send email to me (rabintuladhar2013@gmail.com) will get a free download code.
thank you sir
, can i get this pdf pls sir
Thank you
You do realize you need to do maintenance on prestressed like every decade to 2 decades, the cables in the middle needs to be replaced ?
Hi Neoro, prestressed concrete structures do need to regular inspection and maintenance if required. Hence, external prestressing has become popular these days in bridge construction as inspection of external prestressing wires are much easier and it is easier to replace them as well.
Thanks for the reply.
Rabin Tuladhar what about partial prestressing ?
That depends from use method, in pre-tensioned and bonded post-tensioned concrete there is no possibilities of replacing tendons, and it is virtually maintenance free (there was problems with bonded post-tensioned bridges in Europe due to poor workmanship or quality control during construction).
In unbonded post-tensioned and external post-tensioned concrete there is need for regular maintenance and replacing tendons if it is needed (external post-tensioned concrete have many advantages over other methods and can be retrofitted to existing constructions or used to correct problems from other methods)
this video is helpful
Useful