---
Created: 2026/04/26 19:11
---
| Status | Topic                    | Requirement                                                   |
| ------ | ------------------------ | ------------------------------------------------------------- |
| x      | Lateral Earth pressure   | General                                                       |
| x      |                          | Earth pressure at rest                                        |
| x      |                          | Rankine's theory: active/passive for horizontal, cohesionless |
| x      |                          | Active/passive for inclined, cohesionless                     |
| x      |                          | Active/passive for horizontal, c-phi soil                     |
| x      |                          | Effect of water table                                         |
| x      |                          | Effect of stratification                                      |
| x      |                          | Effect of surcharge: uniform load, line load, point load      |
| x      |                          | Graphical solution of Coulomb's Earth pressure theory         |
| x      | Subsurface investigation | Theory                                                        |
| x      |                          | Depth of boring                                               |
|        |                          | Method of boring                                              |
|        |                          | Soil sampling, samplers, and disturbances                     |
| x      |                          | SPT, DCPT, CPT                                                |
| x      |                          | Soil exploration report                                       |
|        | Pile foundation          | Theory: type of foundation                                    |
| x      |                          | BC of pile: cohesive soil, alpha method                       |
| x      |                          | BC of pile: cohesionless soil, beta method                    |
| x      |                          | BC of pile: c-phi soil, lambda method                         |
| x      |                          | BC of group piles: block method                               |

---

## Quick revise checklist:

### Lateral earth pressure

- [ ] Definitions: earth pressure at rest, active/passive earth pressure, coefficients
- [ ] Assumptions of Rankine's earth pressure theory
- [ ] Derive active/passive earth pressure coeff.
- [ ] Draw qualitative failure lines
- [ ] Equation of $k_a$, $k_p$ on cohesionless, inclined surface soil
- [ ] Derivation of $\sigma_3 = k_a\sigma_1-2c\sqrt{k_a}$
- [ ] Theoretical unsupported height, $H_u = 2h_c$
- [ ] Effect of stratification plus water table
- [ ] Eqn for effect of point load and strip load
- [ ] Assumptions of Coulomb's theory
- [ ] Justify Rankine's formula from Coulomb's formula for $k_a$ or $k_b$
- [ ] Coulomb's method

### Subsurface exploration

- [ ] Two techniques of depth of boring
- [ ] Empirical equations for depth of boring
- [ ] Six methods of boring (name, applicability)
- [ ] Wash boring description
- [ ] All undisturbed soils are representative soil
- [ ] Soil samplers
- [ ] Three stages of sample disturbance
- [ ] Cutting edge, recovery ratio, rock quality designation
- [ ] SPT mechanisms
- [ ] Refusals
- [ ] Corrections
- [ ] Angle of internal friction of SPT N value
- [ ] CPT: friction ratio
- [ ] CPT: cone resistance from $N$ value
- [ ] Soil exploration report
- [ ] Boring log

### Pile foundation

- [ ] Driven pile: cohesive soil (alpha method)
- [ ] Driven pile: cohesionless soil (beta method) (recognize that $f_s = \beta\sigma_{avg}$)
- [ ] Driven pile: c-phi soil (lambda method)
- [ ] Skin friction and end bearing for bored pile conversion
- [ ] Capacity based on SPT-N value
- [ ] Group piles: efficiency
- [ ] Group pile: block method