Helical & Spiral Staairs 1

[IYIeI2cY]

hi there, i need some help in design stairs with helical and spirl shapes, RC design for sure,
i solved it with sap2000, but i cant understand the results well, i dont know how to calculate the reinforcement needded to resist shear and torsion. i hope some one who can tells me .
thx in advance

 

[Polecat]

I downloaded a spreadsheet sometime ago that is supposed to solve the spiral staircase problem. I have not had the occasion to use it as yet, so I can't vouch for its accuracy. However, if you have already solved it in SAP2k, this might give you a cross-check since you mentioned you're having difficulty in interpreting the results.

Email me [wyf@spiraleng.com] and I'll send it to you.

Polecat

http://www.spiraleng.com

 

[ishvaaag]

You have a freely downloadable worksheet for the design of RC rectangular sections subject to shear plus torsion according to the ACI 318 95 code in the Mathcad Collaboratory.