So I understand that prestressing is done to counteract stresses from applied loads when in service, but how do these prestresses not just crack the concrete before those loads ever make it to the girder.
I remember asking my professor this question when going over prestressed concrete in bridges but I canโt remember what his answer was.
Edit: English is hard sometimes
Which programs do you guys use to analyze and design a prestressed concrete slab ? , I'm using Sap2000 but I'll like to know other options.
Im looking for any reference on how to cope with lateral stability for precast members with or without prestress.
Im Eurocode based structural engineer but I think any information would really help. We got one formula (actually 4) in eurocode which basically defines the minimum value for flange width that should be safe that allows second order effects to be ignored. Looks like this:
https://preview.redd.it/38b6mnkot5a61.png?width=1068&format=png&auto=webp&s=e8f4ef3f2742e8751d61071925990b5c59220535
I would like to know more about this topic and how you guys approach this problem regardless different code backgrounds . Ive seen designs that crossed those recommended values of minimum width that were build in the end without problem so far. In the end, its stated that you can go beyond but must include second order effects. And I cant find any reference on calculations for that.
Hello guys , i am studying construction management and i am at my senior year . I have a couple of questions concerning a bridge construction.
1- what would be better - cost wise - for 18 meter span , a steel bridge or a prestressed concrete bridge ?
2- also i am developing a Work breakdown structure ( WBS) for a poured prestressed concrete bridge but i am having troubles identifying the activity list for it .
