Hydraulic Modelling Tools
Sebastian Madrid Ontiveros developed these tools to help graduates understand how manhole dimensions and plan areas are calculated in practice.
Shaft Details
Chamber Details
Plan Area Formulas
Rectangular: A = L × W | Circular: A = π × (D/2)²
A = Plan area (m²)
L = Length (mm)
W = Width (mm)
D = Diameter (mm)
π = 3.14159
L = Length (mm)
W = Width (mm)
D = Diameter (mm)
π = 3.14159
Manhole Details
Enter dimensions on the left to see the cross-section.