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Inputs

Materials
f'c (N/mm²)
fy (N/mm²)
fys (N/mm²)
Geometry (mm)  
Column Type
Short Dimension
Long Dimension
Cover to Centre
Effective Height
Rebar Dia (mm)
No of Bars - Short Dir.
No of Bars - Long Dir.
Total Reo

Loads (KN, m)
DL
LL
Ultimate N*
Weak Dir .Moments  
Top Moment
Bot. Moment
Strong Dir. Moments  
Top Moment
Bot. Moment

 

Weak Axis

Key Values
Φ Mub - Φ Nub -
         
  Nc - Φ Mu -
         
Km - Φ Nuo -
         
  δ b - Φ Nt -
 
Design Loads
  N* - N*/ BD -
         
M* - M/ BD² -
 
 
Utlilisation= -

Strong Axis

Key Values
Φ Mub - Φ Nub -
         
Nc - Φ Mu -
         
Km - Φ Nuo -
         
  δ b - Φ Nt -
 
Design Loads
  N* - N*/ BD -
         
  M* - M/ BD² -
 
 
Utllisation=-

Biaxial

Desgin Loads
M* Weak = -
         
  Φ Muo Weak = -    
         
  M* Strong = -    
         
  Φ Muo Strong = -    
         
Alfa n = -
         
Quarter of 3D interaction diagram,
at applied load OF:		 -
           
           
           
Bi Axial Utilisation = -

RKALC Assistant



Dear "testingusers@rkalc.com",

We’re excited to introduce RKALC Assistant, your AI-powered companion for structural column design and optimisation. RKALC Assistant makes your workflow faster, smarter, and more efficient, helping you make informed engineering decisions with ease.

What Can RKALC Assistant Do?

  • ✅ Instant Calculations – Adjust width, depth, rebar percentage, or load capacity in real-time. Say "make it 600x600" or "reduce MPa to 32", and it updates instantly.
  • ✅ Optimise Column Design – Say "optimise width", "optimise depth", or "optimise height" to get the best column dimensions, reinforcement, and material strength.
  • ✅ Interpret Results – Quickly analyse utilisation, slenderness, and reinforcement efficiency.
  • ✅ Interactive Chat – Ask design-related questions like "what is the optimum square (or circular) column for this?" or "comment on results".
  • ✅ Voice Chat – Use voice recognition—speak up and get instant answers.

How to Use It?

Enter your column parameters, ask RKALC Assistant to optimise or analyse your design, and get instant results. Whether you're adjusting reinforcement percentages or verifying load capacity, RKALC Assistant is here to streamline your workflow.

We’d love to hear your feedback as we continue to improve RKALC Assistant. Email your thoughts or suggestions to admin@rkalc.com.

Best regards,
The RKALC Team