| Methods | Advantages and Disadvantages |
| Ordinary Method of Slices (Fellenius, 1927) [55] | - Circular surfaces only - Satisfies moment equilibrium |
| Bishop’s Modified Method (Bishop, 1955) [56] | - Circular surfaces only - Satisfies moment equilibrium - Satisfies vertical force equilibrium but not horizontal force equilibrium |
| Force Equilibrium Method (Lowe & Karafiath, 1960; US Army Corps of Engineers, 1970) [57] [58] | - Suitable for all rupture surface geometries - Does not satisfy moment equilibrium - Satisfies vertical and horizontal force equilibrium |
| Morgenstern & Price’s Method (Morgenstern & Price, 1965) [59] | - More frequent numerical instability compared to other methods - Suitable for all rupture surface geometries - Satisfies all equilibrium conditions |
| Spencer’s Method (Spencer, 1967) [60] | - Suitable for all rupture surface geometries - Satisfies all equilibrium conditions |
| Janbu’s Generalized Procedure of Slices (Janbu, 1968) [61] | - Suitable for all rupture surface geometries - Satisfies all equilibrium conditions |
| Slope Stability Charts (Janbu, 1968; Duncan, 1987) [61] [62] | - Satisfactory results in many cases - Quick computation |