Design of reinforced concrete helical staircase using Euroode2 3

[tadjou laura]

Hi

My name is Boris. A new member of the forum.

Usually in Eurocode for design of reinforced concrete theoritically we read from CHART(TABLES 177 of REYNOLDS AND STEEDMAN, 2005]. From this chart we can easily do the structural analysis or calculate the forces (vertical shear, radial horizontal shear, Axial forces, Torsion, horizontal moment, vertical moment at different angles.

Where can i find this chart please?? I Searched it on google but can't find it. please is there any document where i can get this chart from??

 

[BulbTheBuilder]

I decided to take a peek before I sleep and the file "GA plans, in order from floor basement to parapet. doesn't work. Please re-attach

 

[tadjou laura]

Here is the GA plans attached

 

[tadjou laura]

Hi Sir @ Bulb the builder. Think the forum has posting problem with some files.

Here's a the location of the retaining wall

 

[tadjou laura]

The foundation have cyclopéan concrete at its base. to support the raft, because the raft rest on a sandy clay soil.

 

[tadjou laura]

The results of soil reaction (Ks) after RC member sizing in robot structural analysis.

 

[tadjou laura]

here file attachedThe load takedown on columns to foundations. some areas comparing with the soil reaction in the previous post, the load acting is greater than the reactions, probably the reason for punching shear failure

 

[tadjou laura]

The soil distribution

 

[tadjou laura]

the retaining wall is active in this region, while the other is at rest

 

[tadjou laura]

soil pressure on the retaining wall automatically calculated from robot

 

[tadjou laura]

Yeah Sir @Bulb the Builder, trying to do manual calculation. Analysis using Moment distribution method will de done on the north facade frame, cause circular columns are easily aligned.

 

[tadjou laura]

will update the GA plans with circular columns in open spaces such as restaurants and sports halls. Thanks for the recommendation Sir @Bulbthebuilder.

sometimes when i merge files the forums doesn't open the file, that's why i send one by one files

 

[tadjou laura]

Hi Sir;

Here's the frame, decided to analyze manually using moment distribution method before doing the design.

Thanks in advance

Boris

 

[BulbTheBuilder]

The comments are typically for almost every floor. You need deeper beams at certain locations. You can also think of using ribbed slab if your deflections are excessive.

[EDIT] - GA_merged.PDF

 

[BulbTheBuilder]

let me ask you these questions.

Do you know what you're supposed?
Do you understand what you are doing?
And most importantly, is this your master's thesis and is it due September (next month)?

 

[BAretired]

So far, this thread has not addressed the design of a reinforced concrete helical staircase, the topic stated in the title. Instead, it seems to be focusing on numerous aspects of building design.

If this is a school project, we probably should not be getting involved with the design of the building.

 

[BulbTheBuilder]

Apparently, we opened a can of worms @BAretired

But looks like OP is now figuring out a master's thesis project due September.

 

[BAretired]

Apparently, we opened a can of worms @BAretired

No harm done yet, but Eng-Tips providing ongoing advice on a school project does not fairly represent the work of the student IMO.

 

[BulbTheBuilder]

That is true but I think for master's finding information and seeking advice from industry experts counts towards your skills.

From what I have also observed, students get the best help based on the questions they ask, they response, input, re-submitting revised calculations here. So, it might not represent the work of the student fully, but I will give them some credit for the effort. It is a grey topic, but I totally agree with you.

 

[tadjou laura]

Hi Sir @BulbTheBuilder;

Thanks a lot for the time and comment spent on the GA plans. Actually i designed it in the software, but didn't update some beam section even though can we seen visually that the section can't pass the design. Here is the GA plans updated.

The 20cm thick slab pass the design, just that there will be adequate workmanship during the execution process.

Yeah Sir @BulbTheBuilder, started the project a couple of months now, and had to a lot of time to figure out the limit of slab, position of column, and having a stable model in robot structural analysis was quite a challenge.


I know there's a bulk of work, like vibration analysis, retaining wall, shear wall, spiral and nen rectangular landing staircase and (still in manual calculation of frame which with an effort will be finished by tommorow) but trying the best to do as much as i can.


Here's the updated GA plans + the 20cm slab thickness design on the comment


I appreciate again your time

Boris

 

[tadjou laura]

Slab revision design