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Thanks retired13. The link doesn't work though.

Isn’t it true that if the mass center is close to rigidity center the torsion wont be in the first mode? I can change some of these walls to be light weight instead of shear walls or make them shorter as long as I can avoid torsion in the first mode. What will you suggest if so? Can you please...

Thanks Kootk. What about the footing for the lift in the second pic attached? As the core is next to the boundary I dont have enough room to put the footing for overturning. I have calculated but I dont think it will work for overturning moment about E-W direction as the footing is not long...

Thanks retired13. I am actually not worry about the shear capacity of the columns but more of lateral resisting system. The code has definition of walls & column but it is more for fire etc. Not really what I was looking for.

Thanks Kootk. Torsional effect is exactly the concern I have here. I feel more comfortable with shear walls near ends when a structure is this wide. I have some shear walls in E-W direction that I didn't show for clarity. It is not just the ground floor only actually, I also have this torsional...

Sorry forgot to upload pics.

I know that the column-flat slab is not considered a lateral system normally but wall-flat slab can. So I am wondering how long the wall need to be so 'wall'-flat slab can be considered a reasonable lateral resisting system generally speaking? Below is the structure I am working on. On the...

I have this multi-storey structure that consists of a basement and I have two questions regarding the cores and hope you can help me. 1.The architect puts the core wall near the boundary and to save the space for car park on basement level the stair core has been been shifted as below. As you...

I have this flat slab sitting on top of forest RC columns. A couple internal columns fail in minor axis under gravity loads unless I increase the width of the column, which the client is not happy to do. My question is, can I modify the column stiffness (say 0.35 Ig) to let it 'crack' so it will...

The bar here, as I can think of, is to resist lateral load (shear) from soil. Generally speaking, if the bar is not use to resist tension, is cog/lap still required? Cog is normally used for bearing and prevent bar for pull-out, which is not the case when it is used for shear. Am I correct? With...

Thank you KootK. No, but there is concrete slab on top. So the design line load on the lintel is around 30kN/m. Lintel length is 3.7m, so the shear will be around 56kN. It is 190mm thick block with roughly 400mm height. What if I make this lintel to be non-load bearing so the capping beam is...

Hi all, Below is the connection one: RC beam sitting on top of capping beam. Does this connection look ok? If so, can I replace 'Z' bar with 'L' bar lapping in RC beam above only and drill into capping beam? Also, How do I determine the size and spacing of the 'Z' bar? All I can think of the...

I agree. But it is also a good way to start using FEA packages from smaller and simply projects IMO.

Okay. Now this make sense to me. Just expected the latitude design strip would recognize where beam is and not apply the design rule for slab in that area. Thanks you very much.

This is what I thought. There is a 'mesh as slab' option when defining as beam but I didn't tick. I would expect the beam in that area has higher priority than slab when it comes to design and the minimum steel requirement as Celt83 mentioned for slab will be overwritten.

I don't get the logic here. The band beam is defined as 'beam' and I don't think there is such a minimum transverse steel requirement for beams? I will go through the manual in details later. Thanks

Yeah. You are right. Forgive my stupidity on this. Wonder why Ram Concept still produce bottom bars in these areas then. I do think of one scenario when there are way stronger supports paralleling to band beams on both sides of them then there might be some positive moment across band beams but...

Hi hokie66, this is in regard to Ram Concept but I think it applies to other FEA packages. I am not sure which part is nonsensical to you, can I kindly ask you to elaborate? I am not relying on the software to make reinforcement sections. What I want to do here is I want to design it in a...

Below is the layout plan. I have also circled the 'unwanted' latitude bottom bar in band beam as below

Hi all, I have question in regard to modeling band beams in Ram Concept. Basic Info: 8.5m x 8.5m grid with 2400mm*500mm (D) running in longitude direction. Band beams are defined as standard beam element with 'meshed as slab' option unticked while slab is defined as one way slab. Longitude...