Pipes Fractional Equivalents

Overview

Engineering reference data for Pipes Fractional Equivalents in fluid mechanics.

Key Formulas

Reynolds Number

$Re = \frac{\rho v D}{\mu}$

Ratio of inertial to viscous forces — determines flow regime.

Bernoulli's Equation

$P + \frac{1}{2}\rho v^2 + \rho g h = \text{const}$

Conservation of energy for steady, inviscid, incompressible flow.

Continuity Equation

$A_1 v_1 = A_2 v_2$

Conservation of mass for incompressible flow.

Darcy-Weisbach

$\Delta P = f \frac{L}{D} \frac{\rho v^2}{2}$

Pressure drop due to friction in a pipe.

Variables

Fractional Equivalents Reference Table

The following table provides common fractional inch measurements and their decimal equivalents, which are essential for pipe sizing, mechanical drawings, and precision machining applications.

Conversion Formula

To convert any fraction to decimal, divide the numerator by the denominator:

$\text{Decimal Equivalent} = \frac{\text{Numerator}}{\text{Denominator}}$

Example: For $\frac{7}{16}$ inch:

$\frac{7}{16} = 0.4375 \text{ in}$

Practical Applications

• Pipe sizing: Nominal pipe sizes often use fractional designations (e.g., 1/2", 3/4", 1")
• Precision machining: Converting between fractional and decimal for CNC programming and tolerances
• Blueprint reading: Interpreting dimensions on engineering drawings
• Fastener selection: Matching bolt and screw sizes to drill bit measurements

References

• Original Source