PROCEDURE

• Select the type of building

• Enter the length (m) in the range of 4.5 m to 8 m

• Enter the width (m) in the range of 0.9 m to 2.5 m

• Enter the floor-to-floor height (m) and then select the grade of concrete f_ck and grade of steel f_y

• Calculate the height of each flight. Click the Submit button. After three incorrect attempts, correct formula and value will be displayed

• Click on “Next Level” to proceed to the next step

• Enter the height of riser (m) according to the type of building

• Calculate the number of risers, and after three incorrect attempts, the correct formula and value will be displayed

• Then calculate the number of treads:
  Number of treads = Number of risers – 1

• Enter the width of tread (m) as per the type of building

• Calculate L_eff which is:
  L_eff = Number of treads × Width of tread

• Click on “Next Level” to proceed to the next step

• Enter the modification factor (MF) value

• Calculate the effective depth d (m) for waist slab. After three incorrect attempts, the correct formula and value will be displayed

• Enter the diameter of bar (mm) to be adopted

• Choose the clear cover value (either 15 mm or 20 mm) and calculate the overall depth D

• Click on “Next Level” to proceed to the next step

• Enter the live load within the range of 3 kN/m to 5 kN/m and the floor finish value within the range of 1 to 2 kN/m

• Calculate the factored moment M_u. After three incorrect attempts, the correct formula and value will be displayed

• Click on “Next Level” to proceed to the next step

• Choose the beam thickness wall width b (mm) from the dropdown list. The effective depth is checked to ensure safety

• Calculate A_st (mm²) using appropriate design formulas

  

• Number of bars and spacing is calculated and the summary is displayed

• Click on “Next Level” to proceed to next step

• Enter the diameter to be adopted for distribution steel

• Calculate the value of Ast_min. After three incorrect attempts, correct formula and value will be displayed

• Number of bars and spacing is calculated and the summary is displayed

• Click on “Next Level” to proceed to next step

• Calculate percentage of steel

  

• Deflection check is provided to check whether the provided depth is safe in deflection