This is a preview of subscription content, © Springer Science+Business Media Dordrecht 1995, https://doi.org/10.1007/978-1-4615-2067-2_21. ��3�di���������h�闗�fP�%���3ݯt�E ��!g� 0�l��t�zZ93=9=��E^�}\�6_��{P�d5�g��-G���K�����y��`\���zI����:����Sb���~�'�ⴰ@� ����p�'� :\-��h����6�,&vQ����[�̞JP���~�%8��4���]��U�2j)�������2�=v��x���O�y�g~&I� �_$N��sK���|�;�V���d���A��r�D�|�n����Y��r1K-iqE���I��С�'� h|�,�,�?w厌ׇ. /PageLayout /SinglePage 1 0 obj 1.3k Downloads; Abstract. 5. 6. In Compass survey chain or tape is used for linear measurements and compass is used for fixing direction. << /Type /Pages INTRODUCTION. /Count 17 /XObject << /F1 90 0 R /Type /Page >> /Pages 2 0 R Unable to display preview. ��Dr�Q*�^BS��2d8"�IDH� A��� ��H�L.���.r��H�@!I 0��A r�"� /ProcSet [ /PDF /Text ] << -K�h�S3=����'{>dz�����͋ It is done in two steps; Firstly revolve the … Plane Table Survey- Principles, Advantages and disadvantages, Equipment, Accessories and their uses. Two point and three point problems. 4 0 obj Compass surveying Prismatic Compass Compass traversing Important Definition. endobj << THEODOLITE SURVEYING TERMS USED IN MANIPULATING A TRANSIT VERNIER THEODOLITE. compass or the Bowditch rule Balancing Latitudes and Departures The “Bowditch rule” as devised by Nathaniel Bowditch, surveyor, navigator and mathematician, as a proposed solution to the problem of compass traverse adjustment, which was posed in the American journal The Analyst in 1807. Avoid areas where there are deposits of metaliferous ores, /Img1 38 0 R >> h�b```f``Jd`e`�� Ȁ �,@Q� 107 0 obj <>/Filter/FlateDecode/ID[<0EDA94310ECE544B9D90C2C14036DDB3>]/Index[82 45]/Info 81 0 R/Length 120/Prev 375030/Root 83 0 R/Size 127/Type/XRef/W[1 3 1]>>stream Compass Surveying. Compass Surveying – Principles use of Prismatic Compass, Measurement of bearings, Conversion of bearings, Local attraction, Correction of compass traverse. 0 >> Compass traversing: Important Definition True meridian: Line or plane passing through geographical north pole and geographical south pole Magnetic meridian: When the magnetic needle is suspended freely and balanced properly, unaffected by magnetic substances, it indicates a direction. These keywords were added by machine and not by the authors. h�bbd```b``.�� �q+�dU��A$�Bɮ"9���I`�ɱL:�ɳ`Y�i�- �u��0��� "E���m`�D���*׀���O��n{���Hs�?��� W�n /Font << Compasses discussed in this chapter are devices used to determine direction, with a magnetized needle balanced on a pivot. /Filter /FlateDecode endobj tKYK�����p�Ɲ{� �s�x��S|H��،�6V�2:{�0xtt40vtt0�et��b Nh���$4:X;2:��,:X::�9 ��c`�?H��4؉��W�s�LM�����r� ��+6E� �X{��{�#����xt.�U�q��4h�XWlҌ@�Ħ�ۯC��� ��f� /PageMode /UseNone 194.32.79.68. /Kids [ 3 0 R 5 0 R 7 0 R 9 0 R 11 0 R 13 0 R 15 0 R 17 0 R 19 0 R 21 0 R 23 0 R 25 0 R 27 0 R 29 0 R 31 0 R 33 0 R 35 0 R ] h��X_o�8�*~ܪ��'��Bj�Ң]���]WB��T*��fl��n�w�pB�c{<3v�73 g�0™!B��sF� >> When a compass is held steady and the needle swings freely, it points in a northerly-southerly direction, and the degree mark to which it points can be read on the circle. 4. This service is more advanced with JavaScript available, The Surveying Handbook @.� C�ӎ��g�Wh>at��$�P8��3�� This process is experimental and the keywords may be updated as the learning algorithm improves. Changing Face It is the operation of bringing the vertical circle to the right of the observer ,if originally it is to the left , and vice – versa. 82 0 obj <> endobj Methods of plane table survey. Not affiliated /Parent 2 0 R /Resources << Cite as. x^��Mk�0���>n���%;�u_�� ��]� �ڱ���$���ԥ�$ԏ�W���f��J�. Prismatic Compass Survey Surveying Surveying is the art and science of determining the relative positions of various points or stations on the surface of the earth by measuring the horizontal and vertical distances, angles and taking %PDF-1.5 %���� 2 0 obj /Img4 42 0 R >> Not logged in The Surveying Handbook pp 510-532 | Cite as. CIVL 1112 Surveying - Traverse Calculations 4/13 Download preview PDF. Avoidance of Errors in Compass Survey •To reduce possible errors during a compass survey: 5. %���� 1) 2) In compass freely suspended magnetic needle directs to north- south and the bearing of line is obtained by line of sight. /MediaBox [0 0 792 612] Download book PDF. /Img2 39 0 R © 2020 Springer Nature Switzerland AG. Authors; Authors and affiliations; F. Henry Sipe; Chapter. endstream endobj 83 0 obj <> endobj 84 0 obj <> endobj 85 0 obj <>stream Over 10 million scientific documents at your fingertips. True meridian: A-Line or plane passing through geographical north pole and geographical south pole Magnetic meridian: When the magnetic needle is suspended freely and balanced properly, unaffected by magnetic substances, it indicates a direction. /Type /Catalog stream >> %%EOF View SUG111_Chapter_2_Compass_Surveying.pdf from SUG 111 at Universiti Teknologi Mara. 13/6/2016 SUG111 FUNDAMENTAL OF LAND SURVEYING CHAPTER 2 : COMPASS SURVEYING BY: SIR NOORSAZWAN AHMAD This direction is known as magnetic meridian. pp 510-532 | COMPASS SURVEYING. endstream endobj startxref /Length 436 Compasses discussed in this chapter are devices used to determine direction, with a magnetized needle balanced on a pivot. /Contents 4 0 R /Img3 40 0 R %PDF-1.5 >> << endobj The needle and pivot are housed in a box containing a circular ring divided into degrees and/or half-degrees. 126 0 obj <>stream This direction is known as magnetic meridian. Ensure booker takes down readings accurately by asking him to repeat all figures verbally 7. Part of Springer Nature. When large area are involved, compass surveying is used. 3 0 obj Check that all conversions from MN to TN are accurate and all scaled conversions are accurate 6.