Code of Practice Land Survey Ordinance (Cap. 473 v5 Eng) PDF

CODE OF PRACTICE LAND SURVEY ORDINANCE (Chapter 473) Fifth Edition – December 2021 COP 202112  CODE OF PRACTICE LAND SURVEY ORDINANCE (Cap. 473) Fifth Edition – December 2021...

CODE OF PRACTICE LAND SURVEY ORDINANCE (Chapter 473) Fifth Edition – December 2021 COP 202112  CODE OF PRACTICE LAND SURVEY ORDINANCE (Cap. 473) Fifth Edition – December 2021 CONTENTS Parts Paragraphs I GENERAL 1 II INTERPRETATION 1-3 III GENERAL PRINCIPLES FOR RE-ESTABLISHMENT 4-5 OF LOT BOUNDARIES IV CONDUCT OF LAND BOUNDARY SURVEYS 6-12 (A) Field notes 6-7 (B) Origin of co-ordinates & bearings 7-9 (C) Bearings, distances and co-ordinates 9 (D) Survey instruments 9 (E) Traverses 9-10 (F) Establishment of control stations using GNSS 10 (G) Boundary marking 11 (H) Permanent Survey Marks 11 (I) Physical features 12 (J) Survey Report 12 V MEASUREMENTS AND SURVEY TOLERANCES 13 VI LAND BOUNDARY PLANS 14-16 VII SURVEY RECORD PLANS 17-19 VIII LOT SUBDIVISION SURVEY 20-28 (A) Designations of Subdivided Lots 20-25 (B) Subdivision of a Land Parcel of Special Configuration 26-28 APPENDIX A SPECIFICATIONS FOR SURVEY MARKS APPENDIX B DRAUGHTING SPECIFICATIONS FOR SURVEY RECORD PLANS APPENDIX C FORMAT FOR SURVEY REPORTS APPENDIX D SPECIMEN LAND BOUNDARY PLAN APPENDIX E SPECIMEN SURVEY RECORD PLAN COP 202112 i APPENDIX F SPECIFICATIONS AND PRACTICE GUIDES FOR ESTABLISHING GNSS CONTROL STATIONS FOR LAND BOUNDARY SURVEYS (VERSION 3.0) PREPARED BY SURVEY AND MAPPING OFFICE OF LANDS DEPARTMENT APPENDIX G SPECIMEN SURVEY RECORD PLAN (WITH CONTROL STATIONS ESTABLISHED BY MEANS OF GNSS) COP 202112 ii I GENERAL 1. These regulations state the requirements for carrying out all land boundary surveys in Hong Kong under the Land Survey Ordinance (LSO). Words or expressions importing the masculine gender include the feminine gender. 2. For the purpose of control of land boundary surveys, every Authorized Land Surveyor (ALS) shall carry out land boundary surveys in compliance with the LSO and this Code of Practice (COP). 3. Each land boundary survey performed by ALS and submitted to the Land Survey Authority (LSA) shall comprise a survey report, Survey Record Plan (SRP) and Land Boundary Plan (LBP). II INTERPRETATION 4. The following are the definitions of the terms used in these regulations:- "adopted data” means the traverse or land boundary information accepted from previous survey. "boundary mark" means a survey mark which demarcates a parcel of land. "boundary stone" means a boundary mark made from white granite, or concrete slab established by the Survey and Mapping Office of Lands Department to demarcate a parcel of land. "calibration" means the process of checking of a distance measuring equipment against a standard baseline established by the Survey and Mapping Office of Lands Department for corrections to be made to measured lines. "common land boundary" means the common boundary of two adjoining land parcels. “field note” means the original record of field observations and measurements recorded in the field in the course of a land boundary survey, including a print-out from an electronic data recorder or a storage device. “geodetic survey station” means a trigonometric station, a traverse station or a Global Navigation Satellite System (GNSS) control station emplaced and mathematically fixed under the Hong Kong Geodetic Survey System with coordinates published by the Geodetic Survey Section, Survey and Mapping Office of Lands Department. "grid lines" means lines drawn on a map or plan forming a rectangular grid under the Hong Kong Geodetic Survey System. COP 202112 -1-  "Hong Kong Geodetic Survey System" means the current network of survey stations, emplaced and mathematically fixed, based on the "Hong Kong 1980 Geodetic Datum (HK80)" by the Survey and Mapping Office of Lands Department. “Hong Kong GNSS Control Station” means a geodetic survey station emplaced and mathematically fixed under the Hong Kong Geodetic Survey System with geodetic coordinates (latitude and longitude) published by the Geodetic Survey Section, Survey and Mapping Office of Lands Department. "Hong Kong 1980 Geodetic Datum (HK80)" means the survey datum used by the Survey and Mapping Office of Lands Department since 1980. “ITRF96” means International Terrestrial Reference Frame 1996 to which the geodetic coordinates of the Hong Kong GNSS Control Stations are referred. “land” includes- (a) land covered by water; and (b) a building or other thing attached to land or a thing permanently fastened to a building or other thing attached to land, but does not include- (i) any right, interest or easement in or over land; or (ii) the whole or part of an undivided share in land or a building. “land boundary” means a line defining the territorial limits of a parcel of land. “land boundary plan” means a plan showing and delineating the land boundary of a parcel of land. “land boundary record”, in relation to a parcel of land, means the record, kept by the LSA, of all measurements, computations and survey data used in connection with defining the land boundary of the parcel of land and includes the SRP, the LBP and other documents used in connection with defining such land boundary. “land boundary survey” means any survey which is required in connection with defining land boundaries and includes the preparation of field notes, SRPs and LBPs. "missing lot" arises when its landowner requests the Government to locate the boundaries of a lot but a search of Government records fails to establish their position. "party wall" means a wall wherein the common boundary of two land parcels is located. "permanent survey mark" means a survey mark established by a land boundary survey for future use and reference. It serves to provide primary evidence for boundary definition when other more vulnerable survey stations have been disturbed or destroyed by development / redevelopment. COP 202112 -2-  "picket box" means a geodetic survey station enclosed by a cast iron box. “Satellite Positioning Reference Station” means a Hong Kong GNSS Control Station with GNSS equipment set up by the Geodetic Survey Section, Survey and Mapping Office of Lands Department for continuous tracking of GNSS data in support of positioning activities throughout the territory of Hong Kong. "survey mark" means a mark defining a surveyed position. “survey record plan” (SRP) means a plan recording survey data (including land boundaries, survey evidence, survey marks, traverses, alignments and significant ties to occupation and related features) used in a land boundary survey. “survey station” means a survey mark over which survey observations are made in connection with land boundary surveys submitted to the LSA or land boundary surveys carried out by the Survey and Mapping Office of Lands Department. It can be a trigonometric station, a traverse station, or a control station established by using GNSS. "traverse" means a series of lines between survey stations established by angular and linear measurements starting from and closing onto geodetic survey stations or old traverse survey stations, or controls stations established by using GNSS. "urban survey mark" means a geodetic survey station made of metal in a mushroom like shape. COP 202112 -3- III GENERAL PRINCIPLES FOR RE-ESTABLISHMENT OF LOT BOUNDARIES 5. In order to maintain a standard practice for re-establishment of lot boundaries, all ALSs are required to follow the general principles set out below in performing their lot boundary re-establishment work:- (a) Follow the intention of grant – the intention of grant shall be ascertained from the parcel clause of the land grant document and portrayed in the survey report (e.g. the intention of grant is to follow the occupation on ground, or the shape / dimension / area being shown or depicted by the relevant boundary line on the grant / assignment / division plan, etc.); (i) Adopt original occupation – the re-established boundaries should follow those surviving boundary features that reflect the intention of grant and are found or believed to have been in existence when the lot was first granted or, in case of a section, when it was carved out from its parent lot; (ii) Respect existing boundary features – subject to sub-paragraph (i) above, the re-established boundaries should normally follow the existing boundary features (e.g. field bunds, building lines, fences, walls, hedges, ditches, channels, etc.) if these features do not deviate from the intention of grant (e.g. the relevant boundary line as shown on the grant / assignment / division plan); (b) Adopt common land boundaries previously defined – common land boundaries previously defined by ALS, Registered Professional Surveyor (Land Surveying) and the Government, should be adopted unless there is overriding justification to the contrary, which should be fully explained in the survey report (e.g. different interpretation of intention of grant, adoption of different weight on boundary evidences, etc.); and ALS has the duty to liaise with the relevant professional land surveyor(s) who defined the land boundaries of the adjoining lots in order for both surveyors to avoid discrepancy or conflict along the common boundary; (c) Present the evidence – the re-establishment of lot boundaries shall be evidence based. Boundary related evidence shall be collected as far as practicable; weighted logically; adopted with justification; presented and recorded clearly in the survey report; (d) Provide reasons for discrepancies – it is essential that the positions, dimensions and areas of the subject lot and the adjacent lots be checked against the evidence which includes but not limited to land grant documents showing the intention of grant and other relevant land boundary records. The causes for any significant discrepancies in such positions, dimensions and areas should be examined, identified and justified meeting the requirements at Appendix C. In case the re-established lot boundaries fall on some existing structures or space being occupied by persons other than the subject lot owner, such situation must COP 202112 -4-  be highlighted in a distinct paragraph in the survey report with elaborations for the possible boundary conflicts and disputes that would be inflicted as a result of such boundary re-establishment; 6. Every ALS has to observe all the above general principles in a boundary re- establishment exercise. Failure in doing so will be regarded as a non-compliance with the requirements of this COP unless the ALS can demonstrate in the survey report that in the performance of his boundary re-establishment work, there are circumstances preventing him from following the above principles. COP 202112 -5- IV CONDUCT OF LAND BOUNDARY SURVEYS In order to maintain a uniform standard practice for all land boundary surveys, ALSs are required to adhere to the following regulations:- (A) Field notes 7. The first page of the field notes of every survey shall bear the certificate signed by the ALSs in the following form: I , ………………… , an Authorized Land Surveyor registered under the Land Survey Ordinance (Cap. 473), hereby certify that these field notes, consisting of …… pages, are a correct and complete record of the observations and measurements made in the field, either by me, or under my immediate direction and supervision. I also certify that the land boundary survey, of which the field notes form a part, was carried out in conformity with the Code of Practice approved by the Land Survey Authority under the above Ordinance, and that the survey was completed on the …… day of ………… 20 ……. Dated this …… day of ………… 20 ……..…………………………… Authorized Land Surveyor 8. An ALS or his assistants who carry out the land boundary surveys shall initial and date each page of the field notes. Where an assistant is carrying out the survey under the direction of an ALS, the latter or his delegate will additionally initial and date those pages of the field notes where the survey has been tested or otherwise checked by him and/or, other field instruction has been given. 9. Field notes shall be prepared for all land boundary surveys performed under the Ordinance and should be a complete original record of all field observations and field measurements recorded in the field. Printout from electronic data recorder or a storage device shall bear the signature of the surveyor and shall contain equivalent information as contained in traditional field notes. Hand-written field notes shall be neatly and clearly recorded or annotated in permanent blue or black ink and shall not be obliterated, inked over or erased. Corrections may only be made by crossing out the erroneous entry in such a way that it remains legible, and writing the correct value above or along- side it. COP 202112 -6- 10. Field notes shall record the type and identification number of the instruments including total station and steel tape etc. used for the survey. The first page shall show the designation of the land parcel, locality or such other reference or legal descriptions. The date of starting and completing the survey shall also be recorded. 11. All field notes and computations shall be properly kept for submission upon request by the LSA. (B) Origin of co-ordinates & bearings 12. Only survey stations shall be used for origin of co-ordinates and bearings. Old permanent survey mark not being a survey station in the previous land boundary survey shall not be used for an origin of coordinates and bearings. 13. The reliability of any survey station(s) used for origin of coordinates and bearings shall be proved in any of the following ways by direct observations and measurements:- (a) Where the survey station to be used for origin of coordinates is a trigonometric station, by observing the angle between the rays to two or more trigonometric stations and measuring the distances between the survey station and at least two witness marks as shown in Figure 1. To Trig. B Witness mark Y New To Trig. C Traverse I II Trig. A (Origin) Figure 1 Witness mark X To Trig. D (b) Where the survey station to be used for origin of coordinates is a traverse station, by observing the angle between two adjacent traverse lines of the same existing traverse and measuring the length of one of these traverse lines as shown in Figure 2 and Figure 3. Existing Traverse New I Traverse II A Figure 2 C (Origin) B B A (Origin) Existing Traverse New II I Traverse Figure 3 C COP 202112 -7-  (c) Where the survey station to be used for origin of coordinates is collinear with two adjacent stations of the same existing traverse, by checking whether the three stations are still in a straight line and measuring the distance between any two of them as shown in Figure 4. B I New C Existing Traverse Traverse (Straight Line) A (Origin) II Figure 4 (d) Where the survey station to be used for origin of coordinates is a traverse station and it is impossible or impractical to prove its reliability in the ways as described in Sub-paragraphs (b) or (c) above (for example where only two stations from an old traverse can be found), by measuring the distance of a previously observed and adjusted ray and observing the angles between this ray and at least two other calculated rays to distant geodetic survey stations as shown in Figure 5. C B A (Origin) Calculated rays to Previously observed distant geodetic and adjusted ray survey stations Figure 5 D (e) Where the survey station to be used for origin of coordinates is a geodetic survey station, by observing a minimum of 1 angle between the calculated rays to two or more other geodetic survey stations, and measuring the distance of any one of the calculated rays. (f) Where the survey station to be used for origin of coordinates is a control station established by using GNSS, by measuring the distance of a calculated ray and observing the angle between this ray and the calculated ray to another survey station as shown in Figure 6. B A (Origin) Calculated rays to New II Figure 6 I survey stations Traverse C COP 202112 -8- 14. Any one of the survey stations proven reliable as in paragraph 13 above shall be acceptable as an origin of co-ordinates. 15. The survey tolerances stated in Part V shall be used when proving origins and testing agreements with previous survey work in the field. (C) Bearings, distances and co-ordinates 16. Bearings shall be observed with a theodolite reading to 20 seconds or better precision. Traverse bearings shall be made with a minimum of one arc on both face left and face right of the theodolite. 17. Bearings shall be recorded in the field in accordance with the precision of the theodolite being used and shown on SRP and LBP to the nearest 10 seconds. To facilitate the use of computer in computation and plan production, bearings may be shown on LBP and SRP to the nearest 1 second without rounding off the figures. 18. Distances shall be measured in metres and decimals of a metre and recorded in the field to 0.001 of a metre. Distance measurements shall be made with a steel tape or an electronic distance meter (EDM). All necessary corrections shall be applied. 19. Distances and co-ordinates shall be shown on SRPs to 0.001 of a metre but shall be shown on the LBP to the nearest 0.01 of a metre. To facilitate the use of computer in computation and plan production, distances and coordinates may also be shown on LBP to the nearest 0.001 of a metre without rounding off the figures. (D) Survey instruments 20. Distance measuring instruments include steel tape and EDM. Steel tape shall be checked against an adopted baseline, which is established by the LSA, at intervals not exceeding 6 months, or immediately following repair. EDM shall also be checked against an adopted baseline established by the LSA annually or immediately following servicing. 21. A full report of each calibration shall be kept by the ALS for record purposes, and shall be presented for inspection when required by the LSA. 22. The LSA may also inspect instruments used for a land boundary survey to ascertain they are in an operating condition to the satisfaction of the LSA. (E) Traverses 23. Traverses shall start from survey stations as described in Paragraph 12. Before any traverse begins, the reliability of the survey stations used for an origin should be proved by the ALS as described in Paragraph 13. Closing rays should be considered as second origins. The reliability of the survey stations used for closing rays and coordinates should be proved by using the same methods as for origins. It is just as important to select suitable closing stations as it is to select a good origin, and particular care should be taken to ensure that the bearings used for the closing rays are in the same terms as the bearings used for the origin. COP 202112 -9- 24. No unclosed or self-closed traverses are allowed. 25. Geodetic survey stations emplaced and mathematically fixed by the Survey and Mapping Office of Lands Department are normally in the form of concrete pillars, picket boxes and urban survey marks, and they are collectively described as geodetic survey stations. 26. Traverse survey stations shall be marked by one of the following survey marks, details for which are specified at Appendix A:- (a) Iron tubes; (b) Epoxy putty; (c) Iron spikes; (d) Survey nails; (e) Wooden pegs; or (f) Cut marks. (cut marks shall only be used where other marks cannot be emplaced) 27. Angular misclosure for a traverse shall not exceed (30√n) seconds where n is the number of survey stations in the traverse. 28. Linear misclosure for a traverse shall not exceed (10+2S/15) millimetres where S is the total length of the traverse in metres. 29. When a traverse longer than 1.5 km is run, control bearings shall be observed reciprocally between traverse survey stations and some other geodetic survey stations, at such station intervals as will adequately control the orientation of the traverse lines. The number of traverse survey stations between control bearings shall not be more than fifteen. 30. Traverse misclosures shall be mathematically adjusted. (F) Establishment of Control Stations using GNSS 31. Control stations established by using GNSS shall comply with the accuracy standard and quality requirements as stipulated in Part I of Appendix F. ALSs are required to follow the recommended practice for establishing such control stations and maintaining survey records for quality checking as set out in Part II of Appendix F. COP 202112 - 10 - (G) Boundary marking 32. Boundaries shall be marked at every corner, and where necessary at points on the boundary line if the corners are not intervisible. 33. Where a boundary mark cannot be placed because of an obstruction the boundary mark position shall be offset for establishing its position in future. 34. Boundary marks shall be one of the following survey marks, details for which are specified at Appendix A:- (a) Iron tubes; (b) Epoxy putty; (c) Iron spikes; (d) Survey nails; (e) Wooden pegs; or (f) Cut marks. (cut marks shall only be used where other marks cannot be emplaced) 35. Every boundary mark shall be placed by bearing and distance from a survey station and checked independently by radiation from another survey station. Where double radiation is impracticable, other checking method will be used to verify the accuracy intended. The same requirements apply when fixing the position of old marks, occupation and other elements essential to land boundary definitions. 36. The setting out distance from a survey station to a boundary mark using steel tape and EDM shall not exceed 20 metres and 150 metres respectively. They must be checked independently and recorded accordingly. 37. Curved boundaries shall be marked at both end points and at least one other point on the curve. In addition, curves shall be marked at intervals not exceeding 15 metres, measured along the chord. (H) Permanent Survey Marks 38. At least two permanent survey marks (PSMs) shall be established for every land boundary survey in accordance with specifications at Appendix A. Where there are existing PSMs from previous land boundary surveys in the vicinity, they may be accepted as PSMs after verification. No PSM shall be at a greater distance than 100 metres from a boundary mark. 39. All PSMs shall be fixed by double radiation. They shall be described with sketches in the field notes and shown on the SRP as to the type of survey mark and its position and height above ground level. COP 202112 - 11 - (I) Physical features 40. The positions of all buildings or prominent physical features, on or within 0.5 metre of a boundary line, shall be surveyed, calculated and shown on the SRP. Offsets to these features from the boundary line shall also be calculated and shown on the SRP. Physical features beyond 0.5 metre and up to 3 metres need only be shown graphically. 41. If the boundary is located in a party wall, its offset distances in relation to the party wall shall be shown on the SRP. 42. Where a boundary is located in a party wall, or between abutting walls, checks must be carried out to confirm that the line of the party wall or the line between abutting walls is a straight line. (J) Survey Report 43. The survey report shall give the rationale of how the boundaries are established and contain information regarding the root of title. It shall also contain information regarding all the evidences found and include a copy of any LBP, SRP, lot index plan, traverses and any other plan, sketch, photograph or document containing information or data, which have been used or based on for traverse origin and/or boundary definition or redefinition. The submitted survey report shall be disclosed to others by the LSA. The format for survey reports is at Appendix C. 44. Evidence as referred to in Paragraph 43 above should include relevant information obtainable from records (such as Demarcation District (DD) sheets, DD control sheets, DD enlargement, house lot plans, house lot plans retrace, "A" sheet, Cadastral Survey Plan, lot index plan (previously known as DD lot identification plan), SRPs, SRP equivalent data, LBPs, aerial photographs, survey sheets from microfilm) as well as ground occupation, investigation and interviews; and any other form of data that will support the re-establishment of the boundaries of the lot under survey. 45. It is essential that a field survey be conducted to verify the actual field conditions for every land boundary survey even when a division of land is carried out by pure calculations based on an existing LBP of the land being prepared by an ALS in accordance with the code of practice or by the Government. If an ALS considers that no field survey is required for that purpose, he shall provide justifications for and make a declaration of his decision in the survey report. COP 202112 - 12 - V MEASUREMENTS AND SURVEY TOLERANCES 46. If a bearing, an angle, a distance or an area is re-measured or re-calculated for verification, re-establishment or whatever reasons, the original values will be adopted if the discrepancies are within the tolerances listed below. If the discrepancies fall outside these tolerances the new values must be conclusively checked for correctness. If confirmed, the original values must be considered as superseded by the new values with reasons clearly recorded. The tolerances are: (1) Survey tolerances - Bearing / angular measurements: Distance Tolerance under 15 m ± 2' 00" 15 m - 150 m ± 1' 00" over 150 m ± 0' 30" (2) Survey tolerances - Distance measurements: Tolerance: ± (0.015 + 0.0001 x distance in metres) metre (3) Survey tolerances - Area calculations: Tolerance: ± 0.1 % 47. Areas shall be rounded off to the nearest unit as follows: Area of Lot Expressed in Rounded off to nearest under 2000 m2 sq. metre (m2) 0.1 m2 2000 m2 and above sq. metre (m2) 1 m2 (for normal cases) 0.1 m2 (for cases where the area computation involves the deduction of an area already rounded off to 0.1 m2) However, areas already committed may be exempted from this rule, in which case the tolerance in Paragraph 46(3) will apply. All areas shown on plans shall be qualified with the word "about". COP 202112 - 13 - VI LAND BOUNDARY PLANS 48. A LBP is a plan showing and delineating the land boundary of a parcel of land. It shall be prepared for every land boundary survey in connection with defining land boundaries. Under Section 30(4) of this Ordinance, a duplicate of the LBP prepared for a division of land for attachment to the instrument for registration with Land Registry under the Land Registration Ordinance (Cap. 128) shall be deposited to the LSA. Nevertheless, the LSA will not accept the deposit of a duplicate of the LBP or a SRP prepared for the division of a missing lot. 49. A specimen LBP is at Appendix D. A LBP shall include the following information: (1) Land parcel information: (a) A plot of boundaries drawn to scale; (b) Designation of the subject lot or parcel; (c) The area of each lot or parcel; (d) Notation and, if applicable, the description of each boundary corner; (e) Boundary dimensions of subject lot or parcel; (f) Co-ordinates of each boundary corner; and (g) Abutting land information. (2) Supporting information: (a) Grid lines with co-ordinates; (b) Location diagram of the site, where necessary; (c) The plot, with details of colouring and abbreviations; (d) Scale; and (e) Standard north point symbol. (3) Plan size: Any such plan and copy thereof shall be of A3 size or of such size as specified under the Section 8 of Land Registration Regulations (Cap. 128A). (4) Colour Markings on Plans Any such plan and copy thereof shall be so coloured, hatched or crossed-hatched that such colouring, hatching or cross-hatching may be identified, in the manner as specified under the Section 8 of Land Registration Regulations (Cap. 128A). COP 202112 - 14 -  (5) Plan numbering: For the purpose of clarity in establishing the land boundary record, the plan number of LBP submitted to LSA shall be unique. The version number of the LBP shall be updated if any of its content has been changed. The plan numbering system shall be as follows:- LBP/[DSO]/[ALS#]/[Plan#]/[Type][Version] where [DSO] = 2-alpha code of District Survey Office. The codes for various DSOs are:- 'HK' for Hong Kong, 'KL' for Kowloon, 'TK' for Tsuen Wan & Kwai Tsing, 'IS' for Islands, 'DN' for North, 'SK' for Sai Kung, 'ST' for Shatin, 'TP' for Tai Po, 'TM' for Tuen Mun and 'YL' for Yuen Long. It is not necessary to specify the division of a DSO such as east, west or central, etc. [ALS#] = 3-figure registration number of the ALS who signs and certifies the plan. [Plan#] = 5-numeric figure as prepared by the ALS. [Type] = Nature of the survey. 'D' for lot dimension plan. 'S' for lot setting-out plan. [Version] = The version number of a plan. The next Arabic numeral shall be used if there is change made to the earlier version. A revision note giving information about the new version shall be given in the notes column of the revised plan. Example:- LBP/HK/001/00001/D1, LBP/KL/002/12345/D2 (6) Except for cases under Sub-paragraph (7) below, every LBP shall bear a certificate signed and certified by the ALS in the following form:- I , ………………… , an Authorized Land Surveyor registered under the Land Survey Ordinance (Cap. 473), hereby certify that this land boundary plan has been prepared from land boundary surveys that were carried out by me or under my direct supervision in conformity with the Code of Practice approved by the Land Survey Authority under the above Ordinance, and that this plan correctly represents that survey completed on the …… day of ………… 20 ……. Dated this …… day of ………… 20 ……..…………………………… Authorized Land Surveyor COP 202112 - 15 -  (7) Where the land boundary survey is carried out partly by or under the supervision or direction of another ALS, the LBP shall bear a certificate in the following form:- I , ………………… , an Authorized Land Surveyor registered under the Land Survey Ordinance (Cap. 473), hereby certify that this land boundary plan has been prepared from land boundary surveys that were carried out partly by me or under my direct supervision in conformity with the Code of Practice approved by the Land Survey Authority under the above Ordinance, and partly by or under the supervision or direction of another authorized land surveyor, and that this plan correctly represents that survey completed on the …… day of ………… 20 ……. Dated this …… day of ………… 20 ……..…………………………… Authorized Land Surveyor Remarks:- The above certificate shall not be applied to the adoption of survey stations, lot boundary coordinates, and other types of survey data extracted or derived from the work of another surveyor. It shall only be applied to a land boundary survey conducted by more than one ALS and the ALS who signed and certified the plan shall be responsible for the accuracy and completeness of the plan. COP 202112 - 16 - VII SURVEY RECORD PLANS 50. A SRP is a plan which records survey data (including land boundaries, survey evidence, survey marks, traverses, alignments and significant ties to occupation and related features) used in a land boundary survey. An ALS shall submit a file in ASCII format containing the boundary data of the SRP to the LSA. It shall be prepared for every land boundary survey in connection with defining land boundaries. The objectives of preparing a SRP are: (1) to maintain repeatability such that: (a) the SRP alone is to ensure users to be able to maintain consistency of boundary definition, (b) the SRP alone can allow a reader to be confident in that consistency has been achieved, and (c) positive identification of marks and boundary features are made possible; and (2) to comprehensively convey what constitutes and marks the boundary. It is accepted that SRP alone cannot reveal fully why a boundary is so defined or how a decision has been made. 51. The draughting specifications for SRP are at Appendix B. A specimen SRP is at Appendix E. A SRP shall include the following information: (1) Land parcel information: (a) A plot of boundaries drawn to scale; (b) Designation of the subject lot or parcel; (c) The area of each lot or parcel; (d) Notation and if applicable, description of each boundary corner; (e) Boundary dimensions of subject lot or parcel; (f) Co-ordinates of each boundary corner; and (g) Abutting land information. (2) Survey station information: (a) A plot of survey stations; (b) Description of the survey stations; and (c) Bearings and distances of traverses. COP 202112 17  (3) Supporting information: (a) Grid lines with co-ordinates; (b) Location diagram, inset diagram where necessary; (c) Co-ordinates of points; (d) Scale; (e) Reference to relevant document and computations where necessary; (f) Standard north point symbol; (g) Setting out and PSM radiations if applicable (checking radiations are not required to be shown); and (h) Positions and descriptions of PSMs. (4) Plan numbering: For the purpose of clarity in establishing the land boundary record, the plan number of SRP submitted to LSA shall be unique. The version number of the SRP shall be updated if any of its content has been changed. The plan numbering system shall be as follows:- SRP/[DSO]/[ALS#]/[Plan#]/[Type][Version] where [DSO] = 2-alpha code of District Survey Office. The codes for various DSOs are:- 'HK' for Hong Kong, 'KL' for Kowloon, 'TK' for Tsuen Wan & Kwai Tsing, 'IS' for Islands, 'DN' for North, 'SK' for Sai Kung, 'ST' for Shatin, 'TP' for Tai Po, 'TM' for Tuen Mun and 'YL' for Yuen Long. It is not necessary to specify the division of a DSO such as east, west or central, etc. [ALS#] = 3-figure registration number of the ALS who signs and certifies the plan. [Plan#] = 5-numeric figure as prepared by the ALS. [Type] = Nature of the survey. 'D' for lot dimension plan. 'S' for lot setting-out plan. [Version] = The version number of a plan. The next Arabic numeral shall be used if there is change made to the earlier version. A revision note giving information about the new version shall be given in the notes column of the revised plan. Example:- SRP/HK/001/00001/D1, SRP/KL/002/12345/D2 COP 202112 18  (5) Except for cases under Sub-paragraph (6) below, every SRP shall bear a certificate signed and certified by the ALS in the following form:- I , ………………… , an Authorized Land Surveyor registered under the Land Survey Ordinance (Cap. 473), hereby certify that this survey record plan has been prepared from land boundary surveys that were carried out by me or under my direct supervision in conformity with the Code of Practice approved by the Land Survey Authority under the above Ordinance, and that this plan correctly represents that survey completed on the …… day of ………… 20 ……. Dated this …… day of ………… 20 ……..…………………………… Authorized Land Surveyor (6) Where the land boundary survey is carried out partly by or under the supervision or direction of another ALS, the SRP shall bear a certificate in the following form:- I , ………………… , an Authorized Land Surveyor registered under the Land Survey Ordinance (Cap. 473), hereby certify that this survey record plan has been prepared from land boundary surveys that were carried out partly by me or under my direct supervision in conformity with the Code of Practice approved by the Land Survey Authority under the above Ordinance, and partly by or under the supervision or direction of another authorized land surveyor, and that this plan correctly represents that survey completed on the …… day of ………… 20 ……. Dated this …… day of ………… 20 ……..…………………………… Authorized Land Surveyor Remarks:- The above certificate shall not be applied to the adoption of survey stations, lot boundary coordinates, and other types of survey data extracted or derived from the work of another surveyor. It shall only be applied to a land boundary survey conducted by more than one ALS and the ALS who signed and certified the plan shall be responsible for the accuracy and completeness of the plan. COP 202112 19 VIII LOT SUBDIVISION SURVEY (A) Designations of Subdivided Lots 52. The resultant parcels of land when a lot is subdivided shall be designated in accordance with the following practice. It is essential that a standardized system of designations and abbreviations is adopted so that the subdivided lots can be unambiguously and easily identified. 53. When a lot is subdivided for the first time, the subdivided portions are called "Sections" which shall be designated with letters in alphabetical order successively as Section A, Section B, Section C etc. except for the last section which shall be designated as the Remaining Portion of the original lot (see Example 1). There shall be no skipping in the sequence of the letters (the letters I and O shall also be used). If Z is reached then the sequence shall be continued by prefixing A to the letter, then B, and so on, e.g. Section Z, Section AA, Section AB etc. Example 1: First subdivision of Lot 123 Lot 123 Section A Section B Section C Remaining Portion 54. In a subsequent subdivision of a section, the subdivided portions are called "Subsections" which shall be designated with numbers successively as Subsection 1, Subsection 2, Subsection 3 etc. except for the last subsection which shall be designated as the Remaining Portion of the original section (see Example 2). Example 2: Subdivision of Section A of Lot 123 Lot 123 Section A Section B Section C Remaining Portion Subsection 1 Remaining Portion 55. On further subdivisions of a section or a subsection into the next tiers, the key to the designations is that a section is followed by a subsection which in turn followed by a section, ad infinitum. The last portions shall always be designated as the Remaining Portion of the original section/subsection. Sections are labelled by using letters and subsections are labelled by using numbers (see Example 3). Example 3: Subdivision of Subsection 1 of Section A of Lot 123 Section A of Lot 123 Subsection 1 Remaining Portion Section A Remaining Portion COP 202112 - 20 - 56. If the Remaining Portion of a lot/section/subsection is further subdivided, the subdivided portions become additional sections or subsections of the original lot/section/subsection. For new sections, they shall be labelled alphabetically with the letter sequence following on from the letters used in the previous subdivision (see Example 4). For new subsections, they shall be labelled by numbers following on from the sequence in the previous subdivision (see Example 5). There shall be no skipping in the sequence of the letters or numbers. The last section or subsection shall be designated as the Remaining Portion of the original lot/section/subsection. Example 4: Subdivision of the Remaining Portion of Lot 123 Lot 123 Section A Section B Section C Remaining Portion Section D Remaining Portion Example 5: Subdivision of the Remaining Portion of Section A of Lot 123 Section A of Lot 123 Subsection 1 Remaining Portion Subsection 2 Remaining Portion 57. When a portion of a lot/section/subsection is resumed by the Government, it will not be given any designation. The land parcel with non-designated portion(s) being resumed will become known as the Remaining Portion of the original lot/section/subsection. On subdivision of a remaining portion involving resumed portion(s) with no designation(s), labels for the designations of the subdivided portions shall start with the letter "A" for sections or the number "1" for subsections if the parent lot/section/subsection has not been subdivided previously (see Examples 6 and 7). If parent lot/section/subsection has been subdivided before, the new sections/subsections shall be labelled by letters or numbers following on from the letter or number sequence of the designated sections/subsections in the previous subdivision (see Examples 8 and 9). Example 6: Subdivision of the Remaining Portion of Lot 123 involving resumed portion(s) with no designation(s) (Lot 123 has not been subdivided previously) Lot 123 Resumed Portion(s) Remaining Portion (with no designations) Section A Remaining Portion COP 202112 - 21 -  Example 7: Subdivision of the Remaining Portion of Section A of Lot 123 involving resumed portion(s) with no designation(s) (Section A of Lot 123 has not been subdivided previously) Section A of Lot 123 Resumed Portion(s) Remaining Portion (with no designations) Subsection 1 Remaining Portion Example 8: Subdivision of the Remaining Portion of Lot 123 involving resumed portion(s) with no designation(s) (Lot 123 has been subdivided previously) Lot 123 Section A Remaining Portion Resumed Portion(s) Remaining Portion (with no designations) Section B Remaining Portion Example 9: Subdivision of the Remaining Portion of Section A of Lot 123 involving resumed portion(s) with no designation(s) (Section A of Lot 123 has been subdivided previously) Section A of Lot 123 Subsection 1 Remaining Portion Resumed Portion(s) Remaining Portion (with no designations) Subsection 2 Remaining Portion 58. Sections/subsections of a lot created in previous subdivisions may sometimes be amalgamated to form a new parcel of land. The resultant land parcel shall be assigned with a new designation except when all the subdivided portions of a lot/section/subsection are involved in the amalgamation, in which case, the original lot/ section/subsection will deem to have been "re-established" by means of amalgamation and the original designation shall be adopted. On further subdivision of the re- established lot/section/subsection, the new sections/subsections shall be designated in the manner as described in Paragraph 56 above to avoid confusing them with the old sections/subsections which existed prior to amalgamation (see Examples 10 and 11). COP 202112 - 22 -  Example 10: Amalgamation involving all subdivided portions of Lot 123 Lot 123 Section A Section B Section C Remaining Portion (by amalgamation) Lot 123 (on further subdivision) Section D Section E Remaining Portion Example 11: Amalgamation involving all subdivided portions of Section A of Lot 123 Section A of Lot 123 Subsection 1 Subsection 2 Subsection 3 Remaining Portion (by amalgamation) Section A of Lot 123 (on further subdivision) Subsection 4 Subsection 5 Remaining Portion 59. When the amalgamation involves only some of the subdivided portions of a lot/section/subsection, the resultant land parcel will be regarded as a new section or subsection of the original lot/section/subsection depending on the highest level of the subdivided portions in the subdivision tree involved. It will be a section if the highest level of subdivided portions in the amalgamation involves sections. It will be a subsection if the highest level of subdivided portions in the amalgamation involves subsections. The resultant land parcel shall be designated by a letter (for section) or a number (for subsection) following on from the last letter or number used in the previous subdivision at that highest level. On further subdivision of the resultant land parcel, the new sections/subsections shall be designated in the manner as described in Paragraphs 54 and 55 (see Examples 12, 13, 14 and 15). Example 12: Amalgamation involving some of the subdivided sections of Lot 123 (excluding the Remaining Portion of Lot 123) Lot 123 *Section A *Section B Section C Remaining Portion Section D of Lot 123 (by amalgamation) Subsection 1 Subsection 2 Remaining Portion (on further subdivision) * subdivided land parcels involved in the amalgamation COP 202112 - 23 -  Example 13: Amalgamation involving some of the subdivided subsections of Section A of Lot 123 (excluding the Remaining Portion of Section A of Lot 123) Section A of Lot 123 *Subsection 1 *Subsection 2 Subsection 3 Remaining Portion Subsection 4 of Section A of Lot 123 (by amalgamation) Section A Section B Remaining Portion (on further subdivision) * subdivided land parcels involved in the amalgamation Example 14: Amalgamation involving some of the subdivided portions of Lot 123 (excluding the Remaining Portion of Lot 123) Lot 123 *Section A Section B Section C Remaining Portion *Subsection 1... Section D of Lot 123 (by amalgamation) Subsection 1 Subsection 2 Remaining Portion (on further subdivision) * subdivided land parcels involved in the amalgamation Example 15: Amalgamation involving some of the subdivided portions of Section A of Lot 123 (excluding the Remaining Portion of Section A of Lot 123) Section A of Lot 123 *Subsection 1 Subsection 2 Subsection 3 Remaining Portion *Section B... Subsection 4 of Section A of Lot 123 (by amalgamation) Section A Section B Remaining Portion (on further subdivision) * subdivided land parcels involved in the amalgamation 60. The resultant land parcel shall be designated as the Remaining Portion of the original lot/section/subsection if the highest level of the subdivided portions in the amalgamation involves the Remaining Portion of that lot/section/subsection. On further subdivision of the resultant land parcel, the new sections/subsections shall be designated in the manner as described in Paragraph 56 above (see Examples 16 and 17). COP 202112 - 24 -  Example 16: Amalgamation involving some of the subdivided portions of Lot 123 (including the Remaining Portion of Lot 123) Lot 123 Section A Section B Section C *Remaining Portion...... *Subsection 1 (by amalgamation) Remaining Portion of Lot 123 (on further subdivision) Section D Section E Remaining Portion * subdivided land parcels involved in the amalgamation Example 17: Amalgamation involving some of the subdivided portions of Lot 123 (including the Remaining Portion of Section A of Lot 123) Section A of Lot 123 Subsection 1 Subsection 2 Subsection 3 *Remaining Portion...... *Section C (by amalgamation) Remaining Portion of Section A of Lot 123 (on further subdivision) Subsection 4 Subsection 5 Remaining Portion * subdivided land parcels involved in the amalgamation 61. For any further subdivision of a section/subsection/Remaining Portion that was subdivided not following any one of the patterns of lot designation as described in Paragraphs 53 to 60, the ALS shall decide the lot designation for the new subdivision as appropriate. 62. The following abbreviations shall be used for the designations of the subdivided lots shown on SRPs and LBPs. (a) Section - S. (b) Subsection - ss. (c) Remaining Portion - RP e.g. Lot 123 S.O ss.1 S.I RP - The Remaining Portion of Section I of Subsection 1 of Section O of Lot 123 COP 202112 - 25 - (B) Subdivision of a Land Parcel of Special Configuration 63. The boundaries of a land parcel shall be precisely defined by survey prior to a subdivision. The exact area of the land parcel to be subdivided must be derived and ascertained by the survey. However, for land parcels which consist of separating pieces of land or are enclosing some other lots/sections, to establish the boundaries of these parcels would very often require considerable survey input in terms of both field work and land record search. If a subdivision belongs to either one of the two cases as described in Paragraphs 64 or 65 below, the following principles shall be adopted for the subdivision survey:- 64. Case 1: Subdivision of land parcels consisting of separating pieces of land For cases where it is only required to subdivide from one of the separating pieces of a land parcel, it is acceptable to just define the boundaries of that piece of land in question. The boundaries of the other pieces of land would only need to be shown graphically on the LBP and SRP. Example 1 Lot 99 RP Lot 99 RP 1st portion 2nd portion Lot 99 RP 3rd portion Lot 99 RP 4th portion Lot 99 S.A LEGEND Boundary to be shown graphically only Boundary to be surveyed and coordinated Land to be carved out COP 202112 - 26 -  Areas to be shown on SRP/LBP Section Area Lot 99 S.A 100.0m2 Lot 99 RP 1899.4m2 [ 588.4 m2 (Surveyed) + 1311m2 (Scaled) ] Area computation for the remaining portion (to be shown in the survey report only) Land Parcel Area Remarks 1st portion 301m2 Scaled 2 2nd portion 230m Scaled 3rd portion 780m2 Scaled 2 4th portion 588.4m Surveyed (less the area of the new section) 1899.4m2 (total) 65. Case 2: Subdivision of land parcels which are enclosing other lots or sections Where sections are to be carved out from a land parcel which is enclosing other lots or sections, it is acceptable to just define the peripheral boundaries of the subject land and the boundaries of the new sections, provided that the boundaries of the new sections being defined will not prejudice the boundary definition of all other existing lots/sections enclosed by the subject land. As a general guideline, the existing lots/sections enclosed by the subject land will need to be surveyed with their boundaries precisely defined if they fall within 3 metres from any boundary line of the new sections. Existing lots/sections which fall outside this clearance limit would only need to be shown graphically on the LBP and SRP. Example 2 Lot 9 S.A Lot 9 S.B Lot 2230 HL 12 Lot 9 S.C Lot 9 S.D HL 13 Lot 9 S.E HL 14 HL 15 Lot 2170 Lot 2171 HL 16 HL 17 Lot 9 S.F Lot 9 S.G Lot 9 S.I Lot 9 RP Lot 9 S.H Lot 9 S.J Lot 9 S.K Lot 9 S.L LEGEND Boundaries to be shown graphically only Boundaries to be surveyed and coordinated Land to be carved out COP 202112 - 27 -  Areas to be shown on SRP/LBP Section Area Lot 9 S.K 80.0m2 Lot 9 S.L 80.0m2 Lot 9 RP 1234.5m2 [ 2114.5m2 – 880m2 (Scaled) ] Area computation for the Remaining Portion (to be shown in the survey report only) Existing Lots/Sections Area Remarks 2 Lot 9 RP (peripheral) 2114.5m Surveyed HL12 40.5m2 Scaled 2 HL13 40.5m Scaled. Scaled. Scaled. Scaled 2 Lot 9 S.K 80.0m Surveyed Lot 9 S.L 80.0m2 Surveyed 1234.5m2 (by deduction) 66. The surveyed and/ or scaled areas of the remaining portion of the subject lot shall be shown on the LBP and SRP. For clarity, a detailed breakdown showing the area computation for the remaining portion of the subject lot shall be included in the survey report. COP 202112 - 28 -  Appendix A SPECIFICATIONS FOR SURVEY MARKS 1. Iron tube shall consist of a galvanized iron pipe at least 350 mm long and 20 mm in diameter, driven vertically into the ground. 2. Epoxy putty shall consist of a hole drilled or punched into hard surface filled with epoxy putty and centred with a tack. The hole should be at least 8 mm in diameter and at least 15 mm deep. 3. Iron spike shall be at least 100 mm in length and 12 mm in diameter, driven into the ground to finish either flush with the ground surface or beneath it. 4. Survey nail shall be at least 40 mm in length, 4 mm in diameter and should have a head of at least 7 mm in diameter. 5. Wooden peg shall be made from hardwood and can be of two sizes: (a) 25 mm square and 150 mm long, or (b) 70 mm square and 400 mm long. The position of the boundary corner will be marked on the top of the peg by a small metal tack. 6. Cut mark shall consist of a hole 5 mm in diameter and at least 10 mm deep, drilled into hard surface. It should be surrounded by a triangle shaped groove with equal sides 100 mm long and at least 2 mm deep. 7. Permanent Survey Mark (PSM): Any of the survey marks 1 to 4 above fixed on a permanent feature may be used as a PSM. Alternatively a well defined physical feature may be used as a PSM as long as the feature chosen can be positively identified from a simple description or diagram on a SRP. COP 202112 Page 1 of 1  Appendix B DRAUGHTING SPECIFICATIONS FOR SURVEY RECORD PLANS 1. Plan form 1.1 All SRPs shall be fair drawn in black ink, on the specified SRP form in size A2 (420 mm x 594 mm). The length of this form may be extended from 594 mm to 700 mm to include a second column for tabulation of bearings and distances where required. A3 (297 mm x 420 mm) size may also be used for those plans at a scale of not less than 1:400. 1.2 A SRP shall be drawn on one plan form unless a reduction in scale will adversely affect the quality of the plan. Should two or more plan forms be required, each sheet shall be boldly labelled 'sheet.... of.... sheets' and clear joining lines will be shown between sheets. 2. Scale 2.1 All SRPs shall be produced at a preferred metric scale e.g. 1:2000; 1:1000; 1:500; 1:200; 1:100 or 1:50, that will suitably and clearly illustrate the full details of the survey. Where necessary, intricate and cluttered detail shall be clarified by an enlarged and/or distorted diagram. 3. Grid (plotting) lines 3.1 Plans shall normally be plotted on a grid parallel to the sides of the plan form, north uppermost. However, when the orientation of the survey dictates otherwise, the grid may be tilted, but never be more than 90° from the normal north pointing. 3.2 The position of the grid lines shall be indicated by intersecting cuts at the plan border and at least two meridians and two perpendiculars, suitably spaced, shall be shown. The co-ordinate value of each grid line should be shown. 4. Plan drawing and detail 4.1 All SRPs shall be drawn, either by computer plotter, by hand, or by a combination of both. 4.2 The plans shall clearly show all traverses run, information adopted from previous surveys used for the boundary definition. Boundary and traverse lines adopted shall be annotated as such on the face of the plan. If possible, traverse bearings and distances shall be shown on the face of the plan but may also be tabulated with co- ordinates of the radiated points in the margin of the plan. COP 202112 Page 1 of 5  Appendix B 4.3 All survey marks used shall be described on the face of the plan by type and number. In the case of old marks found or adopted, a reference to the adopted SRP shall be included, either beside the mark, or if all the old marks originate from the same survey, in the margin. Details of the ground placement of all marks except those placed flush in concrete roads and footpaths and those adopted should be shown. e.g. IS3 (road edge of channel); OIT7 (buried 0.10m). 4.4 New traverse survey marks shall be numbered consecutively, commencing from Arabic numeral 1. Boundary marks shall be labelled alphabetically in consecutive order in a clockwise direction from the most northerly north-west corner. If Z is reached, then the sequence shall be continued by prefixing A to the alphabet, then B, and so on. e.g. Z, AA, AB, etc. The letters I and O should not be used. 4.5 The legal description of the subject lot or parcel and its abuttals as well as all relevant road and street names shall be shown on the face of the plan. 4.6 Areas of all land parcels shall be shown on the face of the plan and qualified with the word 'about'. 4.7 Radiation lines which have been observed but not measured shall be annotated 'obs only'. 4.8 A standard north point, as specified at Paragraph 6.1(h) of this specification, shall be shown on all SRPs. 4.9 The plan number of SRP used for reference shall be shown on the face of the plan. 5. Symbols and abbreviations 5.1 The following symbols shall be used to indicate the type of survey mark placed, found or adopted:- New/Adopted Old mark found (a) Boundary stone (b) Geodetic survey station (c) Permanent Survey Mark (d) All other survey marks COP 202112 Page 2 of 5  Appendix B 5.2 The following abbreviations shall be used when referring to specific survey marks:- (a) Boundary stone - BS (b) Survey nail - Nail (c) Cut mark - CM (d) Iron spike - IS (e) Iron tube - IT (f) Epoxy putty - EP (g) Wooden peg - Peg (h) Permanent Survey Mark - PSM (i) Picket box (over any mark) - PB (j) Urban survey mark - USM (k) Concrete pillar - CP Additionally, all existing survey marks found, with the exception of boundary stones, will be prefixed with O, for old e.g. OIT. 5.3 Other allowable abbreviations are:- (a) Adopted - adpt (b) Boundary - bdy (c) Building - bldg (d) Calculated - calc (e) Concrete - conc (f) Observed - obs 6. Line work and lettering 6.1 Line work on SRPs shall be standardized as follows:- Recommended Line Gauge Shown (a) Measured and, or, observed 0.25 mm lines; and origins of bearings (b) Adopted or calculated lines 0.25 mm and grid lines (c) Boundary lines of subject 0.7 mm lot or parcel (d) Boundary lines, other 0.5 mm than (c) above, sheet joining lines COP 202112 Page 3 of 5  Appendix B Recommended Line Gauge Shown (e) Road/street alignments 0.5 mm (f) Fences 0.25mm (Annotate “fence on boundary” if appropriate) (g) Building or structures 0.25 mm (see below) (Describe fully - add approximate age) approx. 15 yrs. conc bldg Party Wall Party Wall Lo t A Lo t C Lo t B Lo t E Lo t D (h) Standard north point symbol 0.5 mm (see below) COP 202112 Page 4 of 5  Appendix B 6.2 Specifications for lettering and figure work are: Recommended Recommended Item Height Gauge (a) Descriptions and areas 7 mm 0.7 mm of subject lots, road names, plan titles, sheet numbers and sheet joining line labels (b) Descriptions of abuttals, 5 mm 0.5 mm etc., diagram titles, specific usage names or descriptions, standard data in bottom panels and SRP reference (c) All other lettering and 2.5 mm 0.25 mm figure work COP 202112 Page 5 of 5  Appendix C FORMAT FOR SURVEY REPORTS All survey reports on land boundary survey should contain the following elements:- 1. Purpose Give information for identification of the subject lot such as designation, location and purpose of survey. 2. Root of Title Give background information of the root of title or history of the subject lot. For sections, provide a ‘family tree’ of the history of divisions and subdivisions in terms of designations and areas extracted from legal documents. Present the result of checking of the subject lot for any contradictory information contained within the parcel clause in land grant document and any incompliance between the description in parcel clause and the depiction on the annexed plan in respect of the lot boundary. 3. List of Available Boundary Evidences List all documentary, physical and parol (e.g. local enquiries) boundary evidence that have been searched, surveyed and collected respectively in different sources (e.g. Land Registry, District Survey Office and Public Records Office, etc.). Indicate if there are any opinions previously given or committed by the Government and other land survey professionals on the boundary definition of the subject lot. 4. Survey Origin Indicate the survey origin, e.g. traverse stations used. 5. Intention of Grant/Subdivision Define the intention of grant of the subject lot/section based on the information provided in the land grant/subdivision document and any other available sources of information. 6. Evaluation of Boundary Evidences Describe any form of checking for agreement of the boundaries between the subject lot and the adjacent lots. Indicate if any investigation has been made on checking the areas and/or dimensions of the adjoining lots. Report and provide evidence for any irregularities and discrepancies found, e.g. irregularities identified in the root of title, inconsistencies of boundary evidence, possible encroachments, etc. Also give views on the merits of each piece of evidence as to its reliability and weighting. In case of significant discrepancy, give opinion on the suspected cause. 7. Conclusion On the basis of the intention of grant as defined and the result of evaluation of boundary evidence, give reasons for accepting and rejecting the evidence. Identify, adduce and COP 202112 Page 1 of 2  Appendix C provide justifications on the most critical boundary evidence adopted in support of the re-established boundaries of the subject lot. Taking into account the previous opinions on the lot boundary definition, make a conclusion on the boundary definition considered as most probable and finally adopted in the survey. 8. Enclosures Enclose all documents that have been based on to define the boundary together with the LBP, SRP and traverse computation sheet. 9. Authorized Land Surveyor’s Certification (1) Except for cases under Sub-paragraph (2) below, the survey report should bear the certificate signed by the ALS in the following form:- I, ………………… , an Authorized Land Surveyor registered under the Land Survey Ordinance (Cap. 473), hereby certify that this survey for the definition of Lot ………… has been carried out by me, or under my direct supervision in conformity with the Code of Practice approved by the Land Survey Authority under the above Ordinance, and that this report correctly represents my work completed on the …… day of.……… 20……. Dated this …… day of ………… 20……..…………………………… Authorized Land Surveyor (2) Where the land boundary survey is carried out partly by or under the supervision or direction of another ALS, the survey report should bear the certificate signed by the ALS in the following form:- I, ………………… , an Authorized Land Surveyor registered under the Land Survey Ordinance (Cap. 473), hereby certify that this survey for the definition of Lot …………… has been carried out partly by me or under my direct supervision in conformity with the Code of Practice approved by the Land Survey Authority under the above Ordinance, and partly by or under the supervision or direction of another authorized land surveyor, and that this report correctly represents my work completed on the …… day of ………... 20….... Dated this …… day of ………… 20….....…………………………… Authorized Land Surveyor COP 202112 Page 2 of 2  APPENDIX D 816250N 816250N 833580E 833600E 833620E LOT COORDINATES & DIMENSIONS Bearing Distance Boundary Point ¢X ' '' in metres Northing Eastin LOCATION PLAN SAMPLE PLAN ONLY I.L. 3213 S.A A 816233.529 833612.616  N ¤ B 124 22 00 5.200 816230.594 833616.908 ¡±¡ 2 ¿Â ï» 76 C 214 10 00 9.400 816222.816 833611.629 B D? O 98 N H F 304 22 00 5.189 816225.745 833607.346 A M |? ST 9 1? RA ND 5 A 34 06 00 9.400 816233.529 833612.616 71 J ± 12 £g ?a A¡ 3 350 £ E J A ? R E 3 £ R ST V V MERC Y O RL IS VE O 2 BU LE ER ST RD C D S I.L. 3213 RP ST IS ¢ SITE T ET U LO