Care and Maintenance of Plane Table
The plane table is an important instrument used in surveying for direct plotting of field data. Proper care and maintenance of the plane table and its accessories are essential to ensure accuracy, durability, and efficient performance. In ITI Draughtsman Civil, students must understand how to handle and maintain this equipment correctly.
1. Importance of Care and Maintenance
- Ensures accuracy in survey work.
- Increases the life of the instrument.
- Prevents damage and costly repairs.
- Maintains smooth functioning during fieldwork.
2. Care of Plane Table Board
- Keep the wooden board clean and dry.
- Avoid exposure to rain, moisture, and direct sunlight.
- Do not place heavy objects on the board.
- Ensure the surface remains smooth and even.
- Store in a safe place to prevent warping or cracking.
3. Care of Tripod Stand
- Check the legs for stability before use.
- Tighten loose screws and joints regularly.
- Keep metal parts free from rust by applying oil.
- Handle carefully while setting up on uneven ground.
4. Care of Alidade
- Keep the edges straight and clean.
- Avoid scratches on the sighting edge.
- Handle telescopic alidade carefully to protect lenses.
- Clean lenses with soft cloth.
5. Care of Spirit Level
- Protect from shocks and impacts.
- Ensure the bubble tube is not damaged.
- Store properly when not in use.
6. Care of Plumbing Fork and Plumb Bob
- Keep the plumb bob clean and free from rust.
- Ensure the string is not worn out.
- Handle carefully to avoid bending.
7. Care of Trough Compass
- Keep away from magnetic materials.
- Ensure the needle moves freely.
- Protect the compass from dust and moisture.
8. Care of Drawing Sheet and Accessories
- Use good quality paper.
- Fix the sheet properly to avoid wrinkles.
- Protect drawings from rain and dirt.
- Use sharp pencils for clear lines.
9. General Maintenance Tips
- Clean all instruments after use.
- Store equipment in dry and safe conditions.
- Regularly inspect for damage or wear.
- Repair or replace damaged parts immediately.
10. Precautions During Use
- Ensure proper leveling and centering.
- Keep the table steady while working.
- Avoid sudden movements or vibrations.
- Protect instruments from harsh weather conditions.
Role of Draughtsman Civil
A Draughtsman Civil depends on accurate survey data for preparing plans and drawings. Proper care and maintenance of the plane table ensure reliable fieldwork and precise plotting.
Conclusion
The plane table and its accessories require proper care and regular maintenance for accurate and efficient surveying. Neglecting maintenance can lead to errors and reduced life of the equipment.
For ITI Draughtsman Civil students, understanding these practices is essential for professional and effective surveying work.