Moment capacity of shear wall?
Moment capacity of shear wall?
(OP)
I have rectangular shear wall with mesh reinforcement in the web and concentraded reinforcement at the both ends of the wall. Is there a simple equation to calculate moment capacity of the wall and which include contribution of mesh reinforcement.
Drile007






RE: Moment capacity of shear wall?
RE: Moment capacity of shear wall?
DaveAtkins
RE: Moment capacity of shear wall?
Dave: I think that neglecting uniform reinforcement is too conservative (once I did the exact calculation and I got difference by approx. factor 2).
StructuralEIT: could you send me a scaned page of the McCormac text.
Thank you
Drile007
RE: Moment capacity of shear wall?
I would need an email address, but post it at your own risk (it is frowned upon in the forum). I don't know how to post a picture. Also, how will the mesh be anchored to the foundation? Is the mesh needed for shear?
RE: Moment capacity of shear wall?
You are right, I won't play with the forum... Can you write the formula on the forum. I'll be very happy if you try to describe the quantities. Can you also write me exact title of the McCormac book and the year of publish (maybe I'll find it in our library).
Thank you
Drile007
RE: Moment capacity of shear wall?
?=(As)(fy)/[(f'c)(lw)(t)]
?=Pu/[(f'c)(lw)(t)]
c/lw=(?+?)/[2(?) + ?(sub1)*(Beta1)]
This is actually on page 987 of my MACGREGOR text, not McCormac, sorry about that. It is the 4th edition Reinforced Concrete Mechanics and Design.
RE: Moment capacity of shear wall?
RE: Moment capacity of shear wall?
There are some rules associated with the applicability of the equation you are discussing (it is empirical). Make sure you check that you can use this.
RE: Moment capacity of shear wall?
Reinforced Concrete Design - A Practical Approach by Svetlana Brzev and John Pao printed in 2006. - you should be able to find the book on Amazon.com
See Chapter 13.6 Shear Walls - Section 13.6.4 - Design of Flexural Shear Walls. They give a method for calculating the capacity of a flexural shearwall with distributed vertical reinforcing.
Note - Book is based on the new 2004 Cdn code, but you could use the same concepts for ACI code.
RE: Moment capacity of shear wall?
Drile007