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Pipe sizing selects appropriate diameter to convey water at acceptable velocity and pressure drop. Too small causes excessive friction; too large wastes material.

Guida passo passo

  1. 1Apply Hazen-Williams or Darcy-Weisbach equations
  2. 2Velocity typically 0.6-2.4 m/s for water systems
  3. 3Calculate diameter and pressure drop

Esempi risolti

Ingresso
Q = 0.05 m³/s water flow, C = 150 (PVC), L = 100 m
Risultato
D ≈ 50-63 mm for <1 m/100 m drop
Hazen-Williams estimate

Errori comuni da evitare

  • Using smooth pipe assumptions on old systems
  • Neglecting temperature effects on viscosity

Domande frequenti

Why limit velocity?

Too high velocity causes excessive friction loss and noise; too low allows settling and corrosion.

How does pipe age affect sizing?

Roughness increases with age, increasing friction losses. Design for aged conditions.

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