50 Civil Engineering Formulas You Must Know
As a civil engineering student, preparing for exams requires you to apply concepts to a problem, and these formulas will guide you in solving those theoretical and practical problems.
Structural Engineering
1. Stress
![\[\sigma = \frac{F}{A}\]](https://civilengghub.com/wp-content/ql-cache/quicklatex.com-78f1d827dbeb82f0660da1fd94ab6780_l3.png "Rendered by QuickLaTeX.com")
2. Shear Stress in Beams
![\[\tau=\frac{VQ}{Ib}\]](https://civilengghub.com/wp-content/ql-cache/quicklatex.com-d5b28b405f5791b7f6598d44776bc76e_l3.png "Rendered by QuickLaTeX.com")
3. Bending Stress
![\[\sigma=\frac{M_y}{I}\]](https://civilengghub.com/wp-content/ql-cache/quicklatex.com-682b355b001df59475147a74f37a85f1_l3.png "Rendered by QuickLaTeX.com")
4. Moment of Inertia (Rectangular Section)
![\[I=\frac{bh^3}{12}\]](https://civilengghub.com/wp-content/ql-cache/quicklatex.com-56202e3af5980d3a5d938ece89434e27_l3.png "Rendered by QuickLaTeX.com")
5. Hooke’s Law
![\[P_{abs}=P_{gauge}+P_{atm}\]](https://civilengghub.com/wp-content/ql-cache/quicklatex.com-8d3d3480035ce2cb52127fd51f72e1c0_l3.png "Rendered by QuickLaTeX.com")
14. Viscosity
![\[\tau=\mu\frac{du}{dy}\]](https://civilengghub.com/wp-content/ql-cache/quicklatex.com-585617ef64cb1e3bdeb8b21a4a1bf6ba_l3.png "Rendered by QuickLaTeX.com")
15. Hydrostatic Pressure
![\[P=\rho gh\]](https://civilengghub.com/wp-content/ql-cache/quicklatex.com-41707bf60c19131f3bf7592edfe90a9d_l3.png "Rendered by QuickLaTeX.com")
16. Specific Weight of Fluid
![\[\gamma= \rho g=\frac{W}{V}\]](https://civilengghub.com/wp-content/ql-cache/quicklatex.com-e1aee8fbb9ac726d9a24a151699c94ed_l3.png "Rendered by QuickLaTeX.com")
17. Discharge
![\[Q=Av\]](https://civilengghub.com/wp-content/ql-cache/quicklatex.com-9d69e8ce2200e5320b6c7baa18952c46_l3.png "Rendered by QuickLaTeX.com")
18. Bernoulli’s Equation
19. Darcy-Weisbach Equation
![\[h_f=f\cdot \frac{L}{D} \ cdot \frac{v^2}{2g}\]](https://civilengghub.com/wp-content/ql-cache/quicklatex.com-e7fe870b7f7b0a97ef65727603e5c9db_l3.png "Rendered by QuickLaTeX.com")
20. Manning’s Equation
![\[V=\frac{1}{n} R^{2/3} S^{1/2}\]](https://civilengghub.com/wp-content/ql-cache/quicklatex.com-51190150d96005579577d59ba59f84b2_l3.png "Rendered by QuickLaTeX.com")
Concrete and Steel Design
21. Ultimate Moment Capacity of a Singly Reinforced Beam
22. Depth of Neutral Axis
![\[c=\frac{\alpha}{\beta_1}\]](https://civilengghub.com/wp-content/ql-cache/quicklatex.com-998ad4ff5da5392f2c14e8b5733eb824_l3.png "Rendered by QuickLaTeX.com")
23. Balanced Steel Ratio
24. Moment of Inertia (Cracked Section)
25. LRFD
26. Net Area in Tension
27. Block Shear Rupture
28. Euler Buckling Stress
29. Plastic Moment
30. Slenderness Ratio
Geotechnical Engineering
31. Void Ratio
32. Porosity
33. Mohr-Coulomb Failure
34. Saturated Unit Weight
35. Bearing Capacity
36. Settlement
37. Permeability (Falling Head Test)
38. Time Factor for Consolidation
39. Factor of Safety
40. Earth Pressure (Rankine-Active)
Surveying and Transportation Engineering
41. Slope Distance Correction
42. Stopping Sight Distance
43. Taping Correction Due to Sag
44. Taping Correction due to Temp
