Plane Table Surveying.pptx
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Plane table surveying is a quick method to plot drawings on drawing sheets directly from field. Plane table surveying doesn't need high skill. https://civilenggascent.com/plan-table-surveying/
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Plane Table Surveying.pptx
- 1. Plane Table Surveying PREPARED BY HTTPS://CIVILENGGASCENT.COM
- 2. Instruments for plane table surveying - PLANE TABLE - TROUGH COMPASS - SPIRIT LEVEL - ERASERS - MECHANICAL PENCILS - DRAWING SHEETS - ALIDADE - U-FRAME OR PLUMBING FORK
- 3. Principle of Plane Table Surveying Parallelism is the principle of plane table surveying. As in plane table surveying all the rays on drawing sheet are drawn parallel to the sight line in the alidade, parallelism is the principle of Plane Table Surveying.
- 4. Benefits of Plane Table Surveying As drawings are drawn at the ground, no necessity to maintain field book. Easy and quick to prepare drawings for small work. No great skill is required. It is less costly as compared with theodolite survey. The error and mistakes in plotting can be checked by drawing the check lines.
- 5. Disadvantages of Plane Table Surveying Plane table is heavy and awkward to carry, and the accessories are likely to be lost. It is not suitable for work in a wet climate and in a densely wooded country. It is unsuitable for large area surveys because it requires frequent changes in the size of drawing sheets. It does not give very accurate results.
- 6. Methods of Plane Table Surveying Radiation Method of Plane Table Surveying Intersection Method of Plane Table Surveying The Three point problem in Plane Table Surveying The Two point problem in plane Table Surveying
- 7. Errors in Plane Table Surveying Observation Errors – These are the errors in inappropriate reading Human Errors – False entry in survey book is a type of human errors. It is compensating error. Instrumental Errors – Misalignments of Plane Table, rough edge of alidade, or any other errors in instruments. Natural Errors – Environmental factors such as refraction, wind etc. These errors are cumulative in nature.
- 8. We on Social Media You can find us at https://facebook.com/DiligentCivil https://twitter.com/CivilAspiring Find More on Plane Table Surveying at- https://civilenggascent.com/plan-table-surveying/