Cadastral Survey from DENR

7/27/2019 Cadastral Survey from DENR

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&a Repirhlic qf the '/7ilippii~esT ) c l ) n ~ . t n i e ~ ~ t n n d N n l o r a l R r s o r ~ r c e sf E ~ ~ v i r . o i ~ m r i ~ (Visayas AVC IIII C. QUCZOIIi l i l l ~ ; ~ ~ ~ . CityCI-- Tel. Nos. (632) 29-66-26o 29 * (632) 29-62-52Website: http:/www.denr.gov.ph/ E-mail: [email protected] Memorandum CircularNo. 2010 - 06

SUBJECT: Manual of Procedures on the Transformation and lntegratlonof Cadastral Data into the Phllipplne Reference System of 1992(PRSBZ)Pursuant to Section 22 of the Department of Environment and Natural Resources(DENR) Administrative Order No. 2005-13 entitled "Revised Guidelines for theImplementation of the Philippine Reference System of 1992", this Manual is herebyissued for the guidance and compliance of aii concerned.

Section 1. Objectives- This Manual is issued (a) to provide standards in convertingand transforming cadastral data, surveys, and maps into PRS92, (b) to ensure spatialconsistency in integrating these datasets to PRS92, preparation of ControMLandInformation Maps (projection maps), and utilization of these data by other users; and (c)to adopt basic database management practices to ensure quality, integrity andaccessibility of datasets.Section 2. Scope - This Manual shall cover the transformation and integration of allcadastral data to PRS92, and provide database management mechanisms covering thetransformed datasets.Section 3. Definition of Terms - The following terms used in this Manual shall bedefined as follows:

Adjusted Coordinates - the resulting PRS92 coordinates after theapplication of the transformation parameters.Analog data -traditional cadastral paper maps and records.Cadastral data- records of cadastral and isolated surveys.Cadastral database - a collection of logically related geo-referencedseamless digital vector data and raster data organized to facilitate dataretrieval, exchange and integration, and a data model designed for alllegal land objects managed by Land Management Bureau (LMB)/LandManagement Services (LMS) based on a survey of their boundaries.Such legal land objects are systematically identified by means of someseparate designation and are defined by existing laws.Cadastral map-a map made as a result of a Cadastral Survey, drawn toappropriate scale and showing all land parcels and important natural andman-made features within a municipality/project, for purposes ofdescribing and recording ownership.Cadastral survey projects - projects covering surveys of extensiveareas covering an entire municipality or city consisting of several or manyparcels of land undertaken for the purpose of title clearance and landregistration.Check points - control points used in assessing the accuracy of thetransformation parameters derived.Control points - points whose coordinates are known, marked by amonument, and used as references for land surveys.Conversion - the process of producing a digital version of an analogdata.
http:///www.denr.gov.phmailto:[email protected]:[email protected]:///www.denr.gov.ph


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Coordinate system- a fixed system of lines used to define the positionof a point, line or plane.Digital data - analog data recorded electronically that such storage andother operations can be made using computers.Global Navigation Satellite System - a standard generic term forsatellite navigation systems that provide autonomous geospatialpositioning with global coverage.Graphical Cadastre - a cadastral survey wherein the bearings anddistances of the individual lots are determined using transit and stadia,scaling from photo maps, and other graphical methods.Integration- he process of transforming and consolidating data, surveysand maps into PRS92.Local transformation parameters - numerical constants used in thetransformation of local or area-based coordinates into PRS92.Metadata - a structured data which describes the characteristics of afeature.Numerical Cadastre - a cadastral survey wherein the bearings anddistances of the individual lots are determined from the computationsbased on the actual ground survey.Philippine Reference System of 1992 (PRS92) - he national commoncoordinate reference system for all surveys and maps pursuant to EO 45,series of 1993, as amended by EO 321 and EO 280, series of 2000 and2004, respectively.Residual - the difference between the observed and the computedcoordinates based on the transformation parameters derived.Source Map - the map outputs of a cadastral survey used in theconversion of existing cadastral data such as cadastral maps, andboundary index maps.Transformation - the process of converting spatial datasets from onecoordinate system to another.WGS84 - an earth-centered, earth-fixed global reference frame for theEarth, currently the reference frame being used by the Satellite-basedPositioning System (SPS), for use in geodesy and navigation.

Section 4. Cadastral Data Conversion - The transformation and integration ofapproved cadastral data shall follow the process flow shown in Annex A. It shall startwith the conversion of lot corners, survey project controls and other reference points.The data conversion of coordinates and maps is an initial step in the creation of thedigital cadastral database.The sources of data to be used in the conversion are as follows:

a. lot data computation sheetsb. lot description sheetsc. field notesd. monument description bookse. monument recovery reportsf. municipal or boundary index mapsg. project control mapsh. traverse computation sheetsi. political boundary computation sheetsj. other relevant records

The conversion process shall be governed by the following order: (a) lot datacomputation sheets shall be the primary source of information for the cadastral lot dataconversion, (b) in the absence of these, lot description sheets shall be used, (c) in thet3/

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hstalled in the LMS regional offices. Training on the use and management of saidsystem shall be conducted by NAMRlA for the regional CSTs.The metadata of cadastral survey data shall provide the basis towards the creation of aCadastral Spatial Data Infrastructure (CSDA).Section 10. Unauthorized Copying and Transfer of Cadastral Datasets Generated- Copying andlor transfer of cadastral data generated under this Manual without properauthority shall be dealth with under.applicable laws, rules and regulations, and will bemeted with appropriate penalties.Section 11. SubcontractinglOutsourcing of Data Conversion- Subject to existingrules and regulations, the Regional.LMS offices may opt to contract out or outsource thedata conversion and survey provided the current LMS staff cannot accommodate thesaid activity, and the cost shall not exceed the prevailing unit cost.Section 12. Transfer of Data from LMB to LMS - The LMB shall inventory all thecadastral data in their custody and shall subsequently transfer these data into therespective LMS offices for conversion and transformation into PRS92. These data shallinclude the records cited in Section 4, Paragraph 2 as well as data stored in other mediasuch as microfilms and magnetic disksltapes.Section 13. Technical Assistance to the LMS b y NAMRlA and LMB - The NAMRlAand LMB shall continue to oversee and provide technical assistance to the LMS on theconversion and transformation of surveys and maps into PRS92. The process, agraphics database shall be developed to support the determination and approval oflocal and national transformation parameters.S,ection14. Creation of Task Groups - The NAMRlA and LMB shall create a TaskGroups, mobile resources, monitor the implementation, and extend technical assistancein the process of conversion and transformation to enhance the attainment of theobjectives of this Program.Sectlon 15. Penalty Clause-Any violation or non-compliance of the provisions of thisManual shall be meted with appropriate penalties subject to existing laws, rules andregulations.Section 16. Supplementary and Amendatory Procedures - Supplementaryprocedureslamendments to this Manual shall be issued jointly by the NAMRlAAdministrator and the LMB Director.Section 17. Repealing Clause - All procedures inconsistent with this Manual arehereby repealed or modified accordingly.Section 18. Effectivity - This Manual shall be adopted immediately.

hb1 i ca i ; i cn: " I I P r' l.iliT1.jnr :'!~i-T r - l j - : : j; 37, 2010Ackno1~1 dgement: ONAR, U.P. Law Center

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Annex B.1. Inventory Form for Ca dastral Records -Cadastral Survey ProjectsDepartment of Environment and Natural ResourcesLands Management ServicesDENR Region

Philippine Reference System of 1992 (PRS92) ProjectSTATUSOFCADASTRALSURVEYPROJECTSas of

Note: Based on DENR Lands inventory f m s

Prepared by: Checked by:

Date: Chief, Records SectionDate:2

Noted by:

Chief, Surveys DivisionD a k


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Cadastral Survey from DENR

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