Surveying covers the basic principles of measuring and mapping land — base lines, offsets, conventional signs, true and magnetic bearings, and both open and closed traverses. Modern surveying equipment (Total Station, DGPS, LIDAR) has largely supplemented traditional chain-and-compass methods, but the underlying principles of levelling and theodolite survey remain foundational.
Key Equipment & Concepts
- Level Lines — datum, bench marks, simple and fly levelling; longitudinal and cross-section contouring.
- Theodolite Survey — measurement of horizontal/vertical angles, traversing by method of included angles, closing errors.
- Modern equipment — Auto level, Total Station, DGPS, and LIDAR are now standard for railway alignment surveys.
Content Status
Draft note, grounded in real official syllabus text found via research but not yet cross-checked against the primary RBE PDF directly. Treat as study-aid only until verified.