IRC 58 example check
Enter the road, traffic, axle load spectrum, foundation and concrete data; the slab thickness is re-designed to IRC:58-2015 as you type. Thicknesses in mm, loads in kN, k in MPa/m.
Project
Road and joints
≤ 4.5 m (Cl. 7.1.3)
β = 0.66 with dowels, 0.90 without
Traffic (Cl. 5.5)
min. 5 % (IRC:SP:84)
25 % (Cl. 5.5.2.3)
default 50 % (Cl. 5.5.2.4)
Proportion of axles (axle load survey)
Axle load spectrum
Load classes (kN) and the percentage of axles of each category in the class; the class mid-point is used for stress. You can paste three columns (from, to, %) copied from Excel into any cell.
Foundation (Cl. 5.7)
≥ 8 % for the 500 mm select subgrade
100 - 150 (Table 4)
0 = from the tables
Concrete (Cl. 5.8) and temperature (Cl. 5.6)
0 = 0.7 √fck; min. 4.5 MPa
0 = Table 1 for the slab
5 °C (Cl. 5.6.2)
Thickness design
Dowel bars and tie bars (Cl. 7 and 8)
0 = Table 5