CDC A3 › Chapter 3
Chapter 3 — ACTIONS
LTA CDC Rev A3 (2025-12). Read the official chapter in the LTA PDF. Title source: Official PDF table of contents, text extraction 1 Nov 2026 — checker to confirm against PDF.
Proposed academy content: Action schedule; self-weight; surcharge/water pressure worksheets; verified combination builder. Delivery approach: Initial release, bounded scope. This is the academy's development plan, not an LTA syllabus.
Clauses indexed
- 3.8 GROUND AND WATER LOADS — indexed, awaiting checker verification
- 3.8.3 (design groundwater levels) — indexed, awaiting checker verification
- 3.8.3.1 (groundwater and seawater density) — indexed, awaiting checker verification
Modules
L02 Subscription
Hydrostatic pressure
Draw the water-pressure diagram on a vertical face and calculate the resultant and its line of action per metre width.
Tool: Draft · Lesson: Drafted awaiting review · Example: Drafted awaiting review · Workbook: Built awaiting check · Assessment: Drafted awaiting approval
L01 Free
Self-weight and load take-off
Calculate element self-weights for a load schedule, by element and in total, with every unit shown.
Tool: Draft · Lesson: Drafted awaiting review · Example: Drafted awaiting review · Workbook: Built awaiting check · Assessment: Drafted awaiting approval
G02 Subscription
Basic retaining-wall pressure exercise
Restricted-model earth and water pressure diagram and resultant for a cantilever wall exercise, with the formula source stated.
Tool: Tool not started · Lesson: In preparation · Example: Not started · Workbook: Not started · Assessment: Not started
U01 Subscription
Simple buoyancy equilibrium exercise
Force balance between uplift and restoring actions for a simple underground box, with the factor treatment stated.
Tool: Tool not started · Lesson: In preparation · Example: Not started · Workbook: Not started · Assessment: Not started