other options
other options
(OP)
Hi, I have a 2 story building design in steel (moment frame) but with the increase of the steel cost the building is not giving the right numbers. What other options can I consider. Shear walls, combining concrete with steel???. The building's architecture allows to have the first level in concrete and then to continue in steel also the sreal wall option is arch. acceptable.






RE: other options
RE: other options
RE: other options
Mike McCann
MMC Engineering
RE: other options
One thing I want to be sure about. does the braces go from joint to joint, because if this is rigth then the will cut the open area (architectural openings) where wall are to be built. more details in attached drawing.
RE: other options
RE: other options
RE: other options
RE: other options
It is usually best to discuss these with the architect first so you dont tread on their toes.
RE: other options
So you can choose a Braced Frame solution. If you go for CBF (Concentric Braced Frames) you will have small drift but less ductility if compared to MRF. And braces can occupy space needed by windows. But watch out, because you have:
- X-brace;
- K-brace,
- Chevron-brace (V-shape);
- Upside-down chevron-brace
- Single diagonal brace;
so, pick one of these that fits well for your architecture.
But I would suggest you to go for EBF, Eccentric Braced Frames. You will occupy less space and the "links" will provide you global rigidity and ductility (benefits from both MRF and CBF). I will go for it: EBF shear-type link (short eccentricity).
RE: other options
Some Architects stick their foot in their mouth so much, I never realized that they had toes!
Mike McCann
MMC Engineering