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artist
Active Contributor

Join Date: Mar 2008
Location: UAE
Posts: 10

Post Tensioning

04/30/2008 7:27 AM

Dear All,

Please what means the following in post tensionning work:

Ultimate load: 300 KN par strand?

Working Load 70% of ultimate load?

Jack?

Please do we nead to use the presstressing a flyover for 26 metres span?

thx

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RCE
Guru

Join Date: Dec 2007
Location: California
Posts: 2363
Good Answers: 63
#1

Re: Post Tensioning

04/30/2008 7:22 PM

the ultimate load is the maximum load the strand can resist, and the working load is the maximum you should apply. There are untensioned cables installed as reinforcement into the concrete slab, which are tensioned after the slab has set and cured to an adequate strength, these are the strands on which load may be applied.
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artist
Active Contributor

Join Date: Mar 2008
Location: UAE
Posts: 10
#2
In reply to #1

Re: Post Tensioning

05/01/2008 12:02 AM

Thanck you!

Is there any differnce with post-tensionning and pre-tensioning?

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Anonymous Poster
#5
In reply to #2

Re: Post Tensioning

07/25/2008 3:14 AM

Dear sir

Post tensining mean that we have to apply the tension force on the strands after the concrete pouring

the tendons have profile match the bendig moment diagrame and the cables covred by plastic or galvanized ducts.

the works will be in the site ( cast insitue)

the pre tensioning mean that the tension will be befor the concrete pouring and the strand here un covred (bonded with the concrete)

Eng.Hisham Al Toubah

00970505504541
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Anonymous Poster
#3

Re: Post Tensioning

05/01/2008 2:40 AM

Pre-stressing is having the cables stressed to working load before concreting the structure.

Post Tensioning is otherwise.
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artist
Active Contributor

Join Date: Mar 2008
Location: UAE
Posts: 10
#4
In reply to #3

Re: Post Tensioning

05/01/2008 4:59 AM

THX

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