Chip off pedestal to expose the anchor bolts. Install sleeve on the end of each anchor bolt, and thread on new threaded bars on top. Cast additional height of pedestal so as to cover the threaded sleeves and leave the new threaded bars exposed as the new ends of the anchor bolts. The steel...
Just make sure you detail out expansion and contraction joints, joints between walls and base slab. What sort of foundation do you have for the columns? If you have individual footings/ piles for the columns, you need careful detailing at the joint between columns & base slab.
Finally, because...
Just my $ 0.02:
Combination of modal participations is done using SRSS/ CQC/ 10% or other methods.
Combination of multi-direction responses is done using 100-30-30 or 100-40-40 methods.
Best to be clear about the difference between modal combination and directional combination.
In India, the code writing is done by Government bodies with consultation from academia and industry. I happen to be a member of one of the committees for such a code, and I do believe that the codes should be made freely available for all to use. This will ensure that everyone is able to use...
@rowingengineer:
The answers ARE different for tunnels because:
1. The tunnel itself may (hopefully, unless blocked with rubble or water) provide an escape path at least in one direction. The same goes for ventilation
2. No sewage needs to be drained from a tunnel.
3. Natural light is not...
Since there are other very senior nuclear engineers who have already commented, I'm a bit hesitant about adding my own 2 cents, but for the benefit of non-nuclear readers, I'd like to point out that a PCCV (prestressed concrete containment vessel) is provided with a significant amount of...
Drainage?
Ventilation?
Natural light?
Escape paths in case of fire/ other emergency? (Climbing DOWN 65 storeys will take half an hour. Climbing UP the same height will kill you!)
Should you do something just because you can?
Too many questions. No good answers.
Hi Zannas,
Very interesting post. Could you clarify one thing? In your first post, the graphs have error bars on them. How are these errors computed? Do you get the error estimates from your analysis software?
1. Where is/are the discharge hopper(s)?
2. What boundary conditions did you give at the base of the columns?
3. Have you considered the side panels acting as shear walls?
Hi,
I'm trying to write a small program to draw a sketch of some members using OpenSTAAD. While I can get the width and depth of the member along with flange and web thickness, I can't find any function that will return centroid distance for angles and channels. Can anyone help or will I have...
Thanks everybody!
A big thumbs up to boo1 for the example.
@Joshplum - we're doing tall self-supporting chimneys up to 275m, but those are in concrete.
I couldn't find your attachment, but it seems as if some portion of your structure is becoming unstable on introducing hinges. Check out your mode shapes, and you ought to get a handle on it.
