Reinforced Concrete Shearwalls
Reinforced Concrete Shearwalls
(OP)
I just found out that I blew the reinforcing steel budget for a project, and it's because I have very heavy bending reinforcing at the ends of my shearwalls. Does anyone know of an economical method (that's not untested) besides rebar to get the needed bending capacity from a shearwall? How about a vertically posttensioned shearweall?
RE: Reinforced Concrete Shearwalls
Am I missing something here?
Matt
RE: Reinforced Concrete Shearwalls
RE: Reinforced Concrete Shearwalls
Good luck.
If you need help, let me know.
RE: Reinforced Concrete Shearwalls
postensioning is not economical and definetly not practical in the field. generally, you will have to deal with cable mechanical splicing devices that will replace a large area of concrete that is needed the most at the wall end for compression resistance.
RE: Reinforced Concrete Shearwalls
RE: Reinforced Concrete Shearwalls
RE: Reinforced Concrete Shearwalls
I agree with V2. Reinforcing steel is required, and should be located closed to the ends of the wall. See "Notes on ACI 318", a publication of the PCA, for a very detailed example of a shear wall design.
The two ends of the wall may be returned, forming a C or a I shape, to increase the "d" of the wall. Additional reinforcing may be placed in the returns.
I do not believe prestressing would be economical, unless the width of the wall is limited. Do not forget to check the deflection of the wall.
Hope this would help
AEF
RE: Reinforced Concrete Shearwalls
Instead of using solid concrete walls you might consider to go with polysteel walls. Polysteel walls are essentially concrete shear walls, looks like vertical waffle slab. I recently designed two buildings using polysteel walls as shear walls. These walls are both cost effective and energy efficient.
You may check with the polysteel.com for detailed info
RE: Reinforced Concrete Shearwalls
by doing that you also distribute horizontal forces a litle more to the remaining collumns...
RE: Reinforced Concrete Shearwalls
I was thinking of Seismic not Wind...