This question was very unpopular with the candidates and he few who attempted it performed poorly. Much attention should be paid to survey work in schools. The expected answers are
(a)(i) - Chain surveying
- Compass traversing
- Plane-table surveying
- Theodolite surveying
- Aerial surveying.
(ii) Plane- table Surveying Equipments
- sight rule/alidade
- trough compass
- chain
- hard pencil
- rubble/eraser
Chain Surveying Equipments
- the chain
- Arrows
- Ranging poles
- Field book or notebook
- Steel bond (Tape)
- Notebook or field book
- Pencil
- Eraser
(b) Steps for carrying out Compass Travers of a Zoological Garden
- Reconnaissance survey (Pre-visit to the field before actual survey is done)
- Dividing the field into triangles and setting up stations at the corners of the field
- Taking bearings
- Linear measurements along forward and backward bearings
- Taking offsets from important object using cross staff or tape
- Recording all measurements, offsets, bearings and other observations neatly in a notebook
- Deciding on appropriate scale and plotting all the measurements and observations
