Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Slope Stability Factor of Safety Calculator

Determine whether a soil slope is safe against sliding by computing the Factor of Safety (FS) using the simplified Bishop method. Use this when designing embankments, road cuts, or evaluating landslide risk.

Slope Angle (degrees)

Slope Height (ft)

Soil Cohesion (psf)

Internal Friction Angle

Soil Unit Weight (pcf)

Fill in the required fields to see your result.

Civil

Pipe Flow Calculator (Hazen-Williams)

Determine water flow rate and velocity in pressurized pipes using the Hazen-Williams empirical equation. Ideal for civil engineers sizing water mains, irrigation lines, or fire-suppression systems.

Pipe Diameter (mm)

Pipe Length (m)

Head Loss (m)

Hazen-Williams Coefficient

Fill in the required fields to see your result.

Key differences

	Slope Stability Factor of Safety Calculator	Pipe Flow Calculator (Hazen-Williams)
Category	Civil	Civil
Inputs required	5	4
Result	Factor of Safety	Flow Rate (L/s)
What it does	Determine whether a soil slope is safe against sliding by computing the Factor of Safety (FS) using the simplified Bishop method. Use this when designing embankments, road cuts, or evaluating landslide risk.	Determine water flow rate and velocity in pressurized pipes using the Hazen-Williams empirical equation. Ideal for civil engineers sizing water mains, irrigation lines, or fire-suppression systems.