norma ténica suiça

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English is not an official language of the Swiss Confederation. This translation isprovided for information purposes only and has no legal force.

DDPS Technical Ordinance on Official Cadastral Survey-

ing1(TOCS)

of 10 June 1994 (revision status as at 1 July 2008)

The Federal Department of Defence, Civil Protection and Sport,2

based on Article 3 paragraph 3, 6a, 26 paragraph 2, 31 paragraph 2, 37 paragraph 3,

51 paragraph 3 and 56 paragraph 4 of the Ordinance of 18 November 19923 onOfficial Cadastral Surveying (OCS),4

ordains:

Title 1: Principles and Responsibilities

Chapter 1: Principles

Art. 1 Basic principle

Surveying work must be carried out in accordance with the rules of the professionand with due regard to economy.

Art. 25 Cantonal implementation plan

The cantonal implementation plan details the nature, extent, timetable and costs ofthe work of official cadastral surveying, including:

a. initial survey work;

b. renovation work;

c. work relating to change of exceptional national interest;

d. periodic updating;

AS 1994 18641 Amended in accordance with No. I of DDPS Ordinance of 11 March 2003

(AS 2003 514).2 Amended in accordance with No. I of the DDPS Ordinance of 11 March 2003

(AS 2003 514).3 SR211.432.24 Amended in accordance with No. I of the DDPS Ordinance of 5 June 2008, in force since

1 July 2008 (AS 2008 2759).5 Amended in accordance with No. I of the DDPS Ordinance of 5 June 2008, in force since1 July 2008 (AS 2008 2759).

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Supplementary Provisions implementing the Swiss Civil Code

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e. the replacement of provisional digitising by initial survey (resurvey) or byrenovation of the existing survey;

f. a general estimate of costs.

Art. 3 Division into tolerance levels

For the purposes of official cadastral surveying the territory of the Confederation isdivided into a range of tolerance levels (TS) as follows:

TS1: Urban areasTS2: Built-up areas and building zonesTS3: Areas of intensive agriculture and forestryTS4: Areas of extensive agriculture and forestryTS5:6 Summer pastures and unproductive areas

Art. 3bis 7 Numbering range

A numbering range is a component of an identification system, with correspondinggeometry, defining the range of validity of unique identifiers. Numbering ranges areallocated by the Confederation and by the cantons.

Chapter 2: Responsibilities

Art. 4 Federal Directorate of Cadastral Surveying8

The Federal Directorate of Cadastral Surveying:9

a. ... 10

b. decides in individual cases on exemptions from the obligation to collect ca-dastral surveying data, in accordance with Article 10;

c.11 promotes the dissemination and further development of the data model ofofficial cadastral surveying, especially in terms of the INTERLIS data de-scription language and transfer mechanism and their related documentation(Art. 42);

6 Amended in accordance with No. I of the DDPS Ordinance of 11 March 2003(AS 2003 514).

7 Inserted by No. I of the DDPS Ordinance of 11 March 2003 (AS 2003 514).8 Amended in accordance with No. I of the DDPS Ordinance of 11 March 2003

(AS 2003 514).9 Amended in accordance with No. I of the DDPS Ordinance of 5 June 2008, in force since

1 July 2008 (AS 2008 2759).10 Repealed by No. I of the DDPS Ordinance of 5 June 2008, with effect from 1 July 2008

(AS 2008 2759).11 Amended in accordance with No. I of the DDPS Ordinance of 11 March 2003(AS 2003 514).


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DDPS Technical Ordinance on Official Cadastral Surveying

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d.12 decides on the documents to be deposited for each task (Art. 111) and fortheir approval (Art. 109) as well as on the guarantee of compensation and itspayment (Art. 111 and 112);

e. decides on interim payments (Art. 112);f.13 lays down the principles governing unique user keys and assigns intercan-

tonal numbering ranges (Art. 3bis);

g.14 concludes the programme agreement with the responsible cantonal agency;

h.15 may decide on a simplified surveying in accordance with Article 24 para-graph 2.

Art. 5 Canton

The canton is responsible for:16

a. assigning tolerance levels in individual cases (Art. 3 and 26);

b. laying down the requirements for tolerance level TS 1 (Art. 3 and 25);

c.17 describing cantonal additions to the federal data model in the INTERLISdata description language (Art. 43);

d. guaranteeing the transfer of data via the official cadastral surveying interface(Art. 44 and 45);

e. approving the design of observing schemes and observation procedures forthe "control points" information layer in accordance with Articles 48 and 52;

f. ruling on the treatment of differences in the areas of properties when theyare compared under Article 71 and on provisional digitisation;

g.18 guaranteeing the updating and management of official cadastral surveying(Art. 80-88);

h.19 replacing provisionally digitised existing cadastral plans with new cadastralplans (Art. 91);

i.20 defining the objects to be captured in the provisional digitisation (Art. 95);


13 Inserted by No. I of the DDPS Ordinance of 11 March 2003 (AS 2003 514).14 Inserted by No. I of the DDPS Ordinance of 11 March 2003 (AS 2003 514). Amended in

accordance with No. I of the DDPS Ordinance of 5 June 2008, in force since 1 July 2008(AS 2008 2759).

15 Inserted by No. I of the DDPS Ordinance of 5 June 2008, in force since 1 July 2008(AS 2008 2759).

16 Amended in accordance with No. I of the DDPS Ordinance of 5 June 2008, in force since1 July 2008 (AS 2008 2759).


18 Amended in accordance with No. I of the DDPS Ordinance of 5 June 2008, in force since

1 July 2008 (AS 2008 2759).19 Amended in accordance with No. I of the DDPS Ordinance of 11 March 2003(AS 2003 514).


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j.21 allocating cantonal numbering ranges for internal use (Art. 3bis).

Art. 622

Art. 6bis 23

Title 2: Object Catalogue24

Chapter 1: Object Catalogue and Cantonal Additions25

Art. 726 Data model of official cadastral surveying

1 An information layer of the object catalogue (OCS Art. 6 para. 2) comprises one or

more themes; a theme comprises one or more objects. The themes and objects ofeach layer are defined as follows:

a. "Control points" layer:

1. Planimetric and altimetric control points of category 1 (LFP1 (Lagefix-punkte), HFP1 (Hhenfixpunkte));

2. Planimetric and altimetric control points of category 2 (LFP2, HFP2);

3. Planimetric and altimetric control points of category 3 (LFP3, HFP3).

b. "Land cover" layer:

1. Buildings;

2. Hard-surfaced areas, subdivided into roads and tracks, pavements, traf-fic islands, railways, airfields, artificial ponds, pools and basins, andother hard-surfaced areas;

3. Vegetated areas, subdivided into arable/meadow/pasture, intensive cul-tivation (further subdivided into vineyards and other intensive cultiva-tion), garden, bog/swamp and other vegetated areas with the exceptionof woodland;

4. Waters, subdivided into standing water, flowing water (watercourses)and reed belts;


21 Inserted by No. I of the DDPS Ordinance of 11 March 2003 (AS 2003 514).22 Repealed by No. I of the DDPS Ordinance of 5 June 2008, with effect from 1 July 2008

(AS 2008 2759).23 Inserted by No. I of the DDPS Ordinance of 11 March 2003 (AS 2003 514). Repealed by

No. I of the DDPS Ordinance of 5 June 2008, with effect from 1 July 2008(AS 2008 2759).

24 Amended in accordance with nb. I of Ord. of the DDPS of 11 March 2003(AS 2003 514).

25 Amended in accordance with No. I of the DDPS Ordinance of 11 March 2003

(AS 2003 514).26 Amended in accordance with No. I of the DDPS Ordinance of 5 June 2008, in force since1 July 2008 (AS 2008 2759).


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5. Woodland, subdivided into dense forest, wooded pasture (further sub-divided into dense wooded pasture and open wooded pasture) and otherwooded areas;

6. Unvegetated areas, subdivided into rock, glacier/firn (nv), boul-ders/scree/sand, quarries/landfill and other unvegetated areas.

c. "Single objects" layer:Wall, underground structure, other portion of building, subsurface drainagechannel, important steps, tunnel/underpass/gallery, bridge/footbridge, stationplatform, fountain/well, reservoir (without building), pillar, shelter,silo/tower/gasometer (if not a building), chimney, monument, mast/antenna,observation tower, bank protection works, ramp/sill, avalanche shelter,plinth, archaeological object/ruin, landing stage, isolated rock, small stand oftrees, rivulet/minor stream, track/path, overhead power line, above-ground

hydro-power pipe, railway, aerial ropeway, cable car/chairlift; industrialcableway, ski-lift, ferry, cave/pothole entrance, alignment, important tree,shrine/crucifix, spring, public authority reference point, and other miscella-neous objects.

d. "Heights" layer: digital terrain model (DTM) covering the whole territory.

e. "Local names" layer: local geographical name, place name, name of locality.

f. "Landownership" layer:

1. Land ownership;

2. Distinct and permanent rights (easements);

3. mineral rights;4. boundary markers.

g. "Pipelines" layer:

1. Oil pipelines, gas pipelines and other pipelines governed by the Pipe-lines Act of 4 October 196327.

2. Markers indicating the position of pipelines.

h. "Territorial boundaries" layer:

1. Municipal boundaries, including territorial boundary points,

2. District boundaries,

3. Cantonal boundaries,

4. The national boundary;

i. "Permanent landslip areas" layer: areas prone to landslip in accordance withArt. 660a of the Swiss Civil Code28;

j. "Building addresses" layer: building addresses in accordance with SwissStandard SN 612040 (20046 Edition)29;

27 SR746.1

28 SR21029 The text of the Standard may be obtained from the Swiss Association for Standardization(SNV).


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k. "Administrative subdivisions" layer:

1. Numbering ranges;

2. Sheet boundaries;

3. Tolerance level divisions;4. Sheet information (legend information for the Land Registry Plan).

2 The data model in Annex A indicates the obligatory descriptions of objects andtheir attributes and the information necessary for the transfer of data.

Art. 830 Special conditions for particular objects

1 Planned objects in the "land cover" and "landownership" layers and the "municipalboundaries" theme form an integral part of the object catalogue of official cadastralsurveying. In addition, planned buildings will appear in the "building addresses"

layer. The cantons supervise the reporting procedure.312 Where HFP3 (altimetric control points) exist, it is not necessary to determine theheights of LFP3 (planimetric control points).

3 Objects in the "single objects" and "pipelines" layers are separated into point, lineand area objects.

4 Appropriate selected individual points may be included in the "land cover", "singleobjects" or "pipelines" layers.

5 Attributes which must be defined by the canton are indicated in Annex A by "allo-cated by the canton".

6 Property and territorial boundaries must be defined by means of parcel boundarypoints or territorial boundary points.

Art. 932 Cantonal additions to the federal data model

1 In accordance with OCS Art. 10, the cantons may define additional informationlayers and additional themes or attributes of the objects in Annex A.

2 Such additions are permitted insofar as they conform to the requirements of thefederal data model and are compatible with departmental decisions on the standard-ised data description language and the official cadastral surveying interface (AVS

Amtliche Vermessungsschnittstelle) in accordance with OCS Article 6bis para-graph 2.





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Chapter 2: Definitions and Level of Detail

Section 1: Requirements for Surveying

Art. 10 Criteria for surveying

1 Objects specified in Article 7 must be surveyed if they:

a. are subject to official authorisation or public inspection;

b. fulfil important functions and provide important information for a largenumber of users; or

c. provide significant navigational assistance on the ground.

2 Where justified, the Federal Directorate of Cadastral Surveying33 may remove theobligation to survey objects under paragraph 1letter a above.

3 For objects which do not conform to paragraph 1 above, Articles 13 to 23 areapplicable.

Art. 11 Geometrical conditions

1 Only circular arcs and straight lines are permitted as linear geometric elements.

2 Circular arcs and straight lines of the same object may overlap only as follows:

a. in the "land cover" layer: 5 cm;b.34 in the "single objects" layer: 5 cm;c. in the "local names" layer: 20 cm;d. in the "landownership" layer: 5 cm;

e.35 in the "territorial boundaries" layer: 5 cm;

f.36 in the "permanent landslip areas" layer: 20 cm;

g.37 in the "building addresses" layer: 50 cm;

h.38 in the "administrative subdivisions" layer: 20 cm.

33 Expression according to No. I of the DDPS Ordinance of 5 June 2008, in force since1 July 2008 (AS 2008 2759). This amendment has been made throughout the document.

34 Amended in accordance with No. I of the DDPS Ordinance of 11 March 2003 (AS 2003514).



37 Inserted by No. I of the DDPS Ordinance of 5 June 2008, in force since 1 July 2008

(AS 2008 2759).38 Inserted by No. I of the DDPS Ordinance of 5 June 2008, in force since 1 July 2008(AS 2008 2759).


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Art. 12 Snapping of lines

1 For lines showing different objects from different information layers snapping maybe used if the distance between them does not exceed three times the accuracy

values given in Article 29.2 Snapping of lines in the "landownership" layer and lines in the "land cover" and"single objects" layers which result from points defined precisely on the groundmust not be applied.39

Section 2: "Land Cover" Layer

Art. 13 Minimum areas

1 Areas are to be surveyed if they exceed the following approximate minimum size:a. TS2 >100 m2b. TS3 >1000 m2c. TS4 and TS5 >2500 m2

2 Article 14 paragraph 2 and Article 21 are reserved.

Art. 1440 Buildings

1 The following are deemed to be buildings:

a. Buildings in accordance with Article 3 of the Ordinance of 31 May 200041on the National Register of Buildings and Dwellings;

b. Other permanent structures fixed to the ground, roofed over, and used for aspecific purpose.

2 Areas of buildings are determined from the main parts of each face with the largestexterior vertical surface. Recesses and juts of more than 10 cm at tolerance levels 2and 3, and 50 cm at tolerance levels 4 and 5, are to be surveyed. Faade details mustbe surveyed when the following conditions are fulfilled:

a. Projections, recesses and pillars exceeding 50 cm in TS2 and TS3 and 100cm in TS4 and TS5;

b. Overhangs, bays and building extensions exceeding 50 cm in TS2, and 100cm in TS3, 4 and TS5.



41 SR431.841


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Art. 15 Hard-surfaced areas

Hard-surfaced areas include artificially paved surfaces, notably asphalt, concrete,gravel, paving stones or cobbles. Among hard-surfaced areas the following specific

objects are differentiated:a.42 "Road/track" object: areas providing access for pedestrians and/or vehicular

traffic, such as roads (including lateral parking strips), agricultural tracks,forest tracks and extraction lanes, other tracks (with compacted ground) forpublic use, and their edges including gutters and kerbs;

abis.43 "Pavement" object: area intended for pedestrian access;

ater.44 "Traffic island" object: areas designed to direct or channel traffic move-ment;

b. "Railway" object: the entire railway property up to the transition to another

land cover type, including the trackbed, areas surfaced with ballast, gravel orsand, and platforms which lie between or beside the tracks;

c. "Airfield" object: artificially surfaced runways, taxiways and parking areasfor aircraft;

d. "Pond/pool/basin" object: artificial structures including their edges, notablypublic swimming and bathing facilities, artificial ponds on public and privateland, settling tanks at wastewater purification plants, cisterns or reservoirsfor firefighting;

e. "Other hard-surfaced area" object: all areas which do not fall under letters a

to d above but which fulfil the requirements of the first paragraph of thisspecification and exceed the minimum areas specified in Article 13, notablyparking areas for road vehicles, vehicular access and service roads for build-ings, storage and rest areas, forecourts and sports facilities.

Art. 16 Vegetated areas

1 Vegetated areas comprise cultivated and uncultivated soil with the exception ofwoodland.

2 "Other intensive cultivation" objects notably include orchards and market gardens.

3 "Garden" objects include pleasure gardens and parks, childrens playgrounds,bushes, trees, shrubs and vegetable patches, lawns and land surrounding houses.

4 "Other vegetated area" objects notably include roadside verges and central reserva-tions as well as river banks.



1 July 200844 Inserted by No. I of the DDPS Ordinance of 5 June 2008, in force since 1 July 2008(AS 2008 2759).


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Art. 17 Waters

1 Waters comprise all water areas with the exception of artificial pools, ponds andbasins.

2 "Flowing water (watercourse)" objects notably include rivers, streams and canals,while "standing water" objects cover lakes and ponds. In general the geometricalboundary is recognisable for natural banks by the change of land cover type, and forartificial banks by the structures in question. Bank stabilisation structures are classi-fied in accordance with the corresponding type of land cover.

3 "Reed belt" objects include areas covered with reeds which form the transitionbetween open water and dry land. Isolated stands of reeds within water areas are notsurveyed.

Art. 18 Woodland1 Woodland areas includes forest as defined in Article 2 paragraph 1 of the FederalAct of 4th October 199145 on Forest (Forest Act, ForA).

2 Areas subject to a duty of reafforestation (ForA Art. 2 para. 2 let. c) are treated asplanned objects.

3 The geometrical delimitation of forests may if necessary be carried out in coopera-tion with the responsible forest authorities.

4 Extensive shelter belts outside built-up areas are to be surveyed and treated aswoodland.

5 "Wooded pasture" objects comprise areas as defined in Article 2 of the ForestOrdinance of 30 November 199246.47

6 The areas of "wooded pasture" objects are subdivided into "densely wooded pas-ture" and "open wooded pasture" objects purely for cartographic purposes.48

7 "Other wooded areas" objects include grazed woodland and trees in parkland, treeson river banks and along streams, mixed areas of forest with pasture, rock and scree,and transitional zones at the climatic/altitudinal limit of forest, insofar as the areacannot be classified either as "dense forest" or "wooded pasture".49

Art. 19 Unvegetated areas1 Areas which are not usable for agriculture or forestry are considered to be unvege-tated.

45 SR921.046 SR921.0147 Amended in accordance with No. I of the DDPS Ordinance of 5 June 2008, in force since

1 July 2008 (AS 2008 2759).48 Inserted by No. I of the DDPS Ordinance of 5 June 2008, in force since 1 July 2008

(AS 2008 2759).49 Inserted by No. I of the DDPS Ordinance of 5 June 2008, in force since 1 July 2008(AS 2008 2759).


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2 "Other unvegetated area" objects include mixed zones between grass and rock orscree, especially areas of scrub and rocks and transitional zones at the cli-matic/altitudinal limit of vegetation.

Section 3: "Single Objects"50 Layer

Art. 2051 Relationship with the "land cover" layer

The "single objects" layer comprises objects that possess some characteristics ofland cover but which, because of their nature or their small extent, have minimalimportance in terms of area coverage.

Art. 21 Objects

Objects must be explicitly assigned to the "single objects" layer if:52

a. they are not buildings in accordance with Article 14, for example under-ground structures, bays or balconies;

b. their clear delimitation as areas is not possible or their survey as area objectswould entail disproportionate cost, for example rivulets, small streams, faintpaths, irregular footpaths, watercourses and mountain torrents;

c. they are of linear character, such as railway lines; or

d. they are portrayed on the Land Registry Plan as symbols, for example iso-

lated important trees.

Section 4: "Heights" Layer

Art. 2253 Definition and content

1 The "heights" layer consists of a digital terrain model (DTM).

2 The DTM data must be capable of supply in the form of a 2-metre grid.

3 The origin of the 2-metre grid has the following values in the national coordinate

systems:

a. CH1903 reference system of the reference frame of the Swiss national sur-vey of 1903 (LV03):y = 600 000.00 m (easting) and x = 200 000.00 m (nor-thing);






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b. CH1903+ reference system of the reference frame of the Swiss national con-trol network of 1995 (LV95): E = 2 600 000.00 m (easting) andN = 1 200 000.00 m (northing).

4 The cantons may in addition offer the data in an alternative form derived from theDTM.

Art. 2354

Chapter 3: Accuracy and Reliability

Section 1: Tolerances

Art. 24 Basic principle1 The accuracy and reliability requirements are governed by the tolerance levels(TS).

2 For large areas with very low land value, for which the accuracy and reliabilitycharacteristics of the specified tolerance levels are not necessary, simplified survey-ing may be performed, subject to approval by the Federal Directorate of CadastralSurveying.55

Art. 25 Minimum requirement for TS1

1 TS1 (urban areas) must at least satisfy the requirements for TS2.2 Article 28 is reserved.

Art. 2656 Assignment of tolerance levels

1 The canton lays down tolerance levels for each individual case.

2 It shall designate the areas to which Article 24 paragraph 2 is to apply.

Section 2: Accuracy


The requirements for the accuracy of points of official cadastral surveying are de-fined in terms of mean square errors (standard deviations) and refer to connectionpoints. These apply to all new computations.

54 Repealed by No. I of the DDPS Ordinance of 5 June 2008, with effect from 1 July 2008(AS 2008 2759).

55 Inserted by No. I of the DDPS Ordinance of 5 June 2008, in force since 1 July 2008



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Art. 2857 "Control points" layer

1 The absolute planimetric accuracy (semi-major axis of the error ellipse [standard(Helmert) error ellipse], () in cm) is specified as follows for the respective point

categories and tolerance levels:Point category TS1 TS2 TS3 TS4 TS5

LFP2 3 3 3 8 8

LFP3 * 5 5 10 10

HFP 1/2/3** * 10 20 50 100

* in accordance with cantonal regulations, but at least equivalent to TS2** in accordance with accuracy requirements for the "land cover" and "single objects" layers

2

The altimetric accuracy (standard deviation of heights [root mean square error] (

),in cm) is specified as follows for the respective point categories and tolerance levels:

Point category TS1 TS2 TS3 TS4 TS5

LFP2 4.5 4.5 4.5 12 12

LFP3** * 7.5 7.5 15 15

HFP2 (levelled) * 0.5 0.5

HFP2 (GNSS) 3.0 3.0 4.0 5.0

HFP3 * 0.5

* in accordance with cantonal regulations, but at least equivalent to TS2** where no HFP3 are available

3 The accuracies must be calculated by the method of least squares. They must notexceed the values given in paragraphs 1 and 2 above.4 The tolerance for assessing individual discrepancies in planimetric coordinates andheights is three times the corresponding value given in paragraphs 1 and 2 above.

Art. 29 "Ground cover" and "single objects" layers58

1 The planimetric accuracy (standard deviation in cm) of a precisely defined point onthe ground, such as the corner of a building or a wall, is as follows:

TS2 TS3 TS4 TS5

10 20 50 100




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2 For objects which cannot be precisely defined on the ground, the planimetricaccuracy corresponds to the actual accuracy of determination of their position.59

3 The a priori planimetric accuracy of the surveying and computation methods must

be calculated.

Art. 3060 "Heights" layer1 In areas up to 2000 m a.s.l. covered by tolerance levels TS2 to TS4, the altimetricaccuracy of the DTM specified for precisely defined terrain objects such as roads is80 cm (standard deviation, ).

2 In areas up to 2000 m a.s.l. covered by tolerance levels TS2 to TS4, the altimetricaccuracy of the DTM specified for terrain which cannot be precisely defined, forexample steep or forested ground, is 200 cm (standard deviation, ).

3

In areas above 2000 m a.s.l., and in the areas covered by tolerance level TS5, thealtimetric accuracy of the DTM is specified as 10 m (standard deviation, ).

4 The difference between a directly measured height and the corresponding valuederived from the DTM must not exceed three times the standard deviation in accor-dance with paragraphs 1 to 3 above.

Art. 31 "Landownership" and "Pipelines" layers

1 The planimetric accuracy (standard deviation in cm) of a precisely defined point onthe ground is as follows:

TS2 TS3 TS4 TS5

3.5 7 15 35

2 The planimetric accuracy (standard deviation in cm) of points along road edges,stream banks, ridges, etc., which are not precisely defined on the ground, is as fol-lows:

TS2 TS3 TS4 TS5

20 35 75 150

3 The accuracy of the surveying and computation methods and the achieved a poste-riori planimetric accuracy must be demonstrated computationally for every point.

4 The tolerance limit for the assessment of individual discrepancies is three times thestandard deviation given in para. 1 or 2 above.




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Art. 3261 "Territorialboundaries"62 layer

The same accuracy requirements apply to territorial boundaries as to the "land-ownership" layer.

Section 3: Reliability


1 Surveys and computations must be carried out such that every individual point isadequately protected from gross errors by means of independent redundant observa-tions.

2 Instruments must be periodically tested and calibrated as a precaution against

systematic errors.3 Reliability checks must be carried out on all points in the "control points", "land-ownership" and "territorial boundaries" layers (except for the planimetric accuracyof altimetric control points (HFP)) as well as for individual points in accordancewith Article 8 paragraph 4.


The external reliability of each individual point must be demonstrated by means ofappropriate statistics. Distortion of the results through undetectable gross errors must

not exceed three times the planimetric or altimetric accuracy values specified inArticle 28.

Art. 35 "Landownership" layer

The external reliability of each individual point must be demonstrated by means ofappropriate statistics. Distortion of the results through undetectable gross errors mustnot exceed five times the planimetric accuracy values specified in Article 31 para-graphs 1 and 2.

Art. 3664 "Territorialboundaries"65 layer

Territorial boundaries must satisfy the same requirements as the "landownership"layer.







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Chapter 4: Renovation

Art. 37 Basic principles

1 Renovation serves to produce the components of new official cadastral surveyingfrom definitively accepted surveys carried out under the old regulations.

2 All usable components of the old survey must be taken and reused to support theircompletion and update in accordance with the regulations contained in this Ordi-nance.

3 The provisions covering definitions and levels of detail (Art. 1023) and accuracyand reliability (Art. 2736) must be observed, subject to the reservations of Arti-cles 3841.


1 The fulfilment of the requirements for accuracy and reliability in accordance withthe new regulations must be capable of being demonstrated on the basis of existingaccepted survey work. In other cases supplementary surveys and computations mustbe carried out.

2 Missing attributes must be completed.

3 The density of existing control points must conform to the requirements of Arti-cle 49. Missing or damaged control point monuments must be re-established if theyare being adopted for the new survey. Secondary control points must be monu-

mented as necessary.

4 Where the different information layers are being renovated in stages, those controlpoints which are necessary for the renovation of the data for the current stage and forits updating must be renewed.

Art. 39 "Landownership" layer

1 The fulfilment of the requirements for accuracy and reliability in accordance withthe new regulations may be demonstrated on the basis of the available documenta-tion of existing accepted survey work. This may include field books, field sheets,

computations, stable copies of original field plans, and cadastral maps.2 Missing or damaged boundary marks need not be re-established.

Art. 40 "Land cover" and "single objects"66 layers

1 Missing objects must be added or completed and superfluous objects must bedeleted.



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2 The completion or addition of objects may be based on existing up-to-date materialfrom definitively approved surveys or on further suitable material such as aerialphotographs or field documents.

Art. 41 "Local names" layer

1 If names are revised, the procedure must be agreed with the nomenclature commis-sion.

2 If names are not revised in the course of cadastral renovation, names alreadyapproved by the commission at the time of renovation will be adopted.

Title 3: Standardised Data Description for Official Cadastral Surveyingand the Official Cadastral Surveying Interface 67

Chapter 1:68 General

Art. 42 Definition

1 The INTERLIS data description language is used for the description of the datamodel of official cadastral surveying in accordance with Swiss Standards SN612030 (1998 edition) and SN 612031 (2006 edition).69.70

2 The official cadastral surveying interface (AVS) is defined by the data model ofofficial cadastral surveying described in INTERLIS (Annex A) and by the descrip-

tion of the corresponding transfer format from the INTERLIS compiler.

Art. 43 Cantonal additions to the federal data model

The canton must describe its additions in the INTERLIS data description language.

Chapter 2: Data Transfer


1 Anyone wishing to obtain official cadastral surveying data has the right to receiveit by means of the official cadastral surveying interface.

2 Those who supply official cadastral surveying data have the right to transmit it bymeans of the official cadastral surveying interface.



69 The text of the Standard may be obtained from the Swiss Association for Standardization

(SNV).70 Amended in accordance with No. I of the DDPS Ordinance of 5 June 2008, in force since1 July 2008 (AS 2008 2759).


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3 The media, character set and protocols for the transfer of data must be agreedbetween the parties.

Art. 45 Compatibility with the Official Cadastral Surveying Interface1 Computer systems used for the transfer or exchange of official cadastral surveyingdata must fulfil the following conditions:

a. be able to receive data from the official cadastral surveying interface;

b. be able to supply data to the official cadastral surveying interface; and

c. be able to receive data from the official cadastral surveying interface and re-turn it to the interface after further processing.

2 ...71

Title 4: Control Points

Chapter 1: General

Art. 46 Definition

1 Control points are connection points of official cadastral surveying whose coordi-nates are determined in the reference system of the Swiss national survey throughsurveying and adjustment procedures, and they are clearly and permanently identifi-able in the field by means of control point monuments.

2 Control point coordinates are determined in planimetry and/or altimetry.

Art. 47 Classification

1 Control points are divided into those of the Swiss national survey and those ofofficial cadastral surveying. In general planimetric control points (LFP) are fixed interms of both planimetric coordinates and height above sea level, while altimetriccontrol points (HFP) relate to height above sea level, with their planimetric coordi-nates determined to lower accuracy.

2 Planimetric control points are divided into those of the Swiss national survey(category 1: LFP1) and those of official cadastral surveying (category 2: LFP2 andcategory 3: LFP3).

3 Altimetric control points are divided into those of the Swiss national survey (cate-gory 1: HFP1) and those of official cadastral surveying (category 2: HFP2 andcategory 3: HFP3).

4 Additional points which are not permanently monumented, but which are neededfor detail survey, setting out or strengthening the network, must meet the samespecifications as the LFP.



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Art. 48 Responsibilities

1 The Federal Office of Topography is responsible for the initial provision, renova-tion and updating of the control points in category 1 as well as the verification of

points in category 2.722 The canton is responsible for the initial provision, renovation and updating of thecontrol points in categories 2 and 3 as well as the verification of points in category 3.

Chapter 2: Point Density and Design of Observing Schemes

Art. 49 Density of planimetric control points

1 The number of planimetric control points per km2 is determined by the needs of the

updating work within the limit of the following benchmarks:

Type of terrain LFP3/km2(incl. LFP2)

Average pointspacing(rounded)73

TS 1 150 100 mTS 2 70 150 mTS 3 20 250 mTS 4 10 400 mTS 5 2 850 m

2 The point density for categories LFP1 and LFP2 must remain small and should notexceed 0.5 per km2.74

3 In areas with existing control point networks the point density must be brought upto the benchmarks of paragraph 1 above at the time of updating.

Art. 5075 Density of altimetric control points

1 The canton specifies the necessary point density for HFP2 and HFP3 in eachindividual case.

2

It establishes points of category HFP2 where necessary.

Art. 51 Design of observing schemes

1 Observations must be so arranged that the requirements for accuracy and reliability(Art. 28 and 34) are satisfied.


73 For assumed homogenous distribution in a square grid.74 Amended in accordance with No. I of the DDPS Ordinance of 5 June 2008, in force since



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2 Nearby existing points must be included in observing schemes (neighbourhoodprinciple the avoidance of discrepancies between new and existing points).

3 Observing schemes must be so designed that connections to control points both for

planimetric coordinates and heights above sea level are checked.76

Art. 52 Approval

For initial survey or renovation, the observing scheme must be approved by theresponsible authority in accordance with Article 48.

Chapter 3: Monumentation of Control Points

Art. 53771 Every control point must be permanently marked in as stable a location as possiblebefore field observations start.

2 Station descriptions must be provided for points of categories LFP2 and HFP2.

Chapter 4: Computations and Statistical Analyses

Art. 54 Mathematical model

1 Computations are carried out by the method of least squares.2 Every observation must be provided with a realistic a priori standard error.

3 After verification, connecting control points (both planimetric and altimetric) areconsidered to be fixed and error-free.

Art. 55 Checks on the observations

1 It must be demonstrated that in an unconstrained (free) adjustment the root meansquare residuals do not exceed the specified limits.

2

The limit set for the root mean square residual is 3.5. The risk of "type 2" errors isfixed at 5%.

Art. 56 Proof of quality

1 For every point in the final adjustment, proof must be provided that the accuracyand reliability requirements have been met.




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2 Regardless of the point category or tolerance level, the adjustment program mustprovide statistics to indicate the achieved accuracy and reliability. Values which lieoutside the tolerances laid down must be specially identified.

Chapter 5: Notification Process and Periodic Updating

Art. 57 Notification process

1 The Federal Office of Topography notifies the cantons of changes carried out oncategory 1 control points (LFP1 and HFP1).

2 The cantons notify the Federal Office of Topography of damage or danger tocategory 1 control points.

3 The cantons notify the Federal Office of Topography of changes carried out oncategory 2 control points (LFP2 and HFP2).78

4 It is the duty of cadastral surveyors to notify the relevant cantonal surveying super-vision service of damage, change or danger affecting control points of categories 1and 2.

Art. 58 Periodic updating

Updating procedures include periodic inspections of control points.

Chapter 6: Special Cases

Art. 5979 Permanent landslip areas

In permanent landslip areas (land subject to continuous movement), a control net-work designed for the specific circumstances must be established immediately priorto cadastral surveying.

Art. 60 Control points for special purposes

Control points established for particular non-cadastral purposes must be integratedinto official cadastral surveying if appropriate and if they meet the specified re-quirements.




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Title 5: Extracts and Technical Documentation80

Chapter 1: Scope and Definitions

Art. 61 Scope

1 The provisions of Title 5 apply to the extracts from official cadastral surveyingdata and the related technical documentation in accordance with Article 6a para-graph 3 OCS.81

2 They do not apply to the Land Registry Plan or to documents relating to provi-sional digitisation.

Art. 6282 Extracts from official cadastral surveying data

Valid extracts from official cadastral surveying data under Article 6a paragraph 3OCS include property descriptions, mutation plans and tables, and plans showingpermanent landslip areas.

Art. 6383 Technical documentation

Valid technical documentation under Article 6a paragraph 3 OCS includes calibra-tion and test reports on instruments and equipment, original measurement docu-ments, working documents and documentation of checks, area comparisons onrenovation, sheet boundaries and contractors reports.

Art. 64 Document production and updating

Annex B indicates the extracts and technical documents which are to be producedand kept up to date for each information layer.

Chapter 2: Extracts for the Management of the Land Register

Art. 6584 Property description

1 The property description comprises:

a. the name of the commune;

b. the Land Registry Plan number;







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c. the number and area in m2 of the property, or of the distinct and permanentrights (easements);

d. appropriate information on the location of the objects in question such as the

local name or the road/street name;e. the number or other identification of the building; and

f. a list of the objects from the "land cover" layer.

2 The property description must be dated.

3 Electronic data transfer between official cadastral surveying and the Land Registryis governed by the Technical Ordinance of the FDJP and the DDPS of 6 June 200785on the Land Register (TLRO).

Art. 66 Mutation plan and mutation table

1 A mutation plan and mutation table provide information about changes in objectsin the "landownership" layer.

2 The mutation plan includes:

a. the name of the commune and the mutation number;

b. the old and new states of the objects in question with a graphic indication ofplanned changes;

c. the old and new object numbers;

d. appropriate information on the location of the objects in question, such asthe local name or the road/street name

e. a north point and the scale of the plan; and

f. the date and the signature of the registered surveyor.

3 The mutation table includes:

a. the name of the commune and the mutation number;

b. the areas added to or subtracted from each object;

c. any differences due to rounding of quantities; and

d. the date and the signature of the registered surveyor.4 Electronic data transfer between official cadastral surveying and the Land Registryis governed by the TLRO86.87.

85 SR211.432.11

86 SR211.432.1187 Inserted by No. I of the DDPS Ordinance of 5 June 2008, in force since 1 July 2008(AS 2008 2759).


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Art. 6788 Plans showing permanent landslip areas

A plan must be drawn up for all permanent landslip areas (land subject to continuousmovement).

Chapter 3: Technical Documentation

Art. 68 Calibration and test reports

Reports must be prepared giving information on the testing and calibration of theinstruments and equipment used for the capture and distribution of official cadastralsurveying data..

Art. 69 Original measurementsOriginal measurements must be documented and retained. The type of documenta-tion is not specified.

Art. 7089 Working documents and documentation of checks

Working documents are considered to include the technical documentation demon-strating the completeness, plausibility (accuracy and problem-free insertion into thedatabase), quality and consistency of the data of the official cadastral surveying(digitising set-up reports, check plots, error vector diagrams and the like).

Art. 71 Area comparisons on renovation

During cadastral renovation, the old and new areas of properties are compared foreach plan and their differences and tolerances are identified.

Art. 72 Sheet Boundaries

A small-scale sheet index map must be produced to show the sheet boundaries of theLand Registry Plans.

Art. 73 Contractor's report1 The contractors report must indicate the main activities, decisions and results ofthe survey work carried out.

2 The contractors report includes in particular:

a. the initial situation and the objective of the survey work;

b. a description of the survey work, the methods used and the results obtained;




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c. information on the management and updating of the data;

d. consideration of the cost-effectiveness of the survey work;

e. an overall assessment of the work; and

f. an index of the documentation.

Art. 73a90 Fees

The fixed fee in accordance with Article 38 paragraph 1 OCS for the certification ofan extract from official cadastral surveying data in analogue (hard copy) form shallbe CHF 50.- for the first, and CHF 5.- for each additional copy.

Title 6: Land Reallotment (Art. 2 para. 2 OCS)

Art. 74 Principles of simplified surveys

The density of points in the "control points" layer and the accuracy and reliabilityrequired in the "landownership" layer may be reduced in accordance with Articles75, 76 and 77.


The density of the control point network must meet the needs of the reallotmentprocess, notably the determination of the perimeter, the planning and execution oftechnical procedures and the economical data capture for the other informationlayers.

Art. 76 "Landownership" layer in areas not yet surveyed

1 In areas which have not yet been surveyed, only those boundaries which are notexpected to be affected by the reallotment must be demarcated.

2 The cantons may reduce the accuracy requirements in relation to the tolerancelevels given in Article 31.

3 Proof of reliability in accordance with Article 35 is not required.

Art. 77 "Landownership" layer in surveyed areas

In surveyed areas, the "landownership" layer may be dealt with in accordance withthe regulations for provisional digitisation (Art. 89108).

Art. 78 Work following land reallotment

After land reallotment:



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a. the boundaries for the "landownership" layer must be demarcated and delim-ited and the points must be monumented in accordance with the regulationslaid down in OCS; and

b. the data for all information layers must be completed so as to meet the fullrequirements of official cadastral surveying.

Art. 79 Coordination of procedures

The Federal Directorate of Cadastral Surveying coordinates the payment process forsurveying work when surveying is carried out at the same time as agricultural orforestry land reallotment.

Title 7: Management of Official Cadastral Surveying, includingArchiving, Metadata and History91

Chapter 1: General

Art. 8092 Definition

The management and maintenance of official cadastral surveying comprises theorganisational and technical measures for data management, conservation, archiving,provision of metadata and historical information, and the safeguarding of its compo-nents in order to preserve its value.

Art. 81 Supervision

The cantons shall periodically monitor the management of data under Articles 83and 84 and data security under Article 85.

Art. 82 Administrative unit

The smallest administrative unit for the components of official cadastral surveying isthe commune.

Chapter 2: Official Cadastral Surveying Data Management93

Art. 83 Data management documentation

Data management documents with the following minimum content must be pro-duced and continuously updated:94





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a.95 initial situation at the time of production of digital data for one or morecommunes, with an assessment of the quality, currency and completeness ofthe work to date, together with a description of the documentation and themethod of archiving and documenting the history of the existing material;

b. responsibility for data management;

c. responsibility for access to and changes in the data;

d. diagram showing the internal organisation of data update;

e.96 description of the technical documentation, both that produced when the of-ficial cadastral surveying was carried out and that which is to be producedwhen it is updated, as well as information about the archiving, metadata andhistory of the existing material;

f. directions on action to be taken in the event of data errors and on detecting

discrepancies in the database;

g. operations report.

Art. 84 Supervision of changes in the database

1 After changes in the database, the person responsible must check and record theircompleteness, consistency, plausibility and quality.

2 Automated processes must be used at least for the plausibility check in paragraph 1above.

Art. 85 Data security

1 Those responsible for managing the data of official cadastral surveying have a dutyto take appropriate security measures based on accepted principles in accordancewith the current state of technology.

2 A computer security plan must be established, based on Swiss StandardSN 612010.97






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Chapter 3: Management of other Components of Official CadastralSurveying98

Art. 86 Control points and boundary markersThe cantons take necessary measures for the protection and maintenance of controlpoint monuments and boundary markers.

Art. 8799 Plans, documents and components of cadastral surveying carried outunder the old regulations

1 The canton issues directives necessary for the management of:

a. the Land Registry Plans;

b. other extracts produced for the management of the land register; and

c. relevant technical documentation.

2 The canton issues directives on the archiving, metadata and documentation of thehistory of the components of official cadastral surveying carried out under the oldregulations.

Chapter 4: Archiving, Metadata and Documentation of History100

Art. 88

1 The archiving of technical documentation is intended to ensure that, during theretention periods indicated under paragraph 2 below, all changes can be fully under-stood and reconstituted.101

2 The documentation under Articles 68, 70 and 71 must be retained until the ap-proval of the surveying work, while that under Articles 69, 72 and 73 must be re-tained until the renovation of the corresponding information layers.

3 The measurements and computations used for the determination of control pointsin accordance with Articles 5456 must be archived in suitable form in their en-tirety.

4 The cantons control the archiving, metadata and documentation of history ofextracts produced in accordance with Articles 6567. The provisions of the TLRO102are reserved. 103





102 SR211.432.11


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Title 8: Provisional Digitisation

Chapter 1: General

Art. 89 Purpose

1 Provisional digitisation is intended specifically for cadastral surveying carried outunder the old regulations and serves:

a. the preservation of existing cadastral surveying work;

b. data security;

c. the supply of digital data; and

d. the creation of land information systems.

2

Provisional digitisation is essentially limited to the conversion of the Land Regis-try Plan into digital vector form.

Art. 90104 Replacement of the provisional digitisation

1 Provisionally digitised surveys must be replaced by an initial survey (resurvey) orby renovation of the existing survey.

2 The cantons shall specify the timetable for this replacement in their implementa-tion plan.

Chapter 2: Basic Principles

Art. 91 General provisions

1 The data must be structured in accordance with Article 6 paragraph 2 OCS anddescribed in the INTERLIS data description language.105

2 The accuracy of the cadastral map must be preserved.

3 The cantons shall decide on the replacement of the cadastral map by a new map atthe same scale or smaller. If the data is published at a larger scale, the scale of sur-

vey from which it is derived must be noted.106

4 Existing coordinate values must be retained provided that they meet the qualityrequirements of the old regulations.




(AS 2003 514).106 Amended in accordance with No. I of the DDPS Ordinance of 11 March 2003(AS 2003 514).


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1 The control point network is normally taken from the existing survey.

2 In areas where no control network exists or the existing network is inadequate,

control points and reference points shall be fixed so as to provide a connection to thegeodetic reference system and to meet the needs of the provisional digitisation.107

Art. 93 "Landownership"108 layer

The data is taken from the cadastral map.

Art. 94 "Land cover", "single objects" and "pipelines" layers109

1 The data is taken from the cadastral map only if it is still current.

2 In general objects which are missing on the cadastral map are not surveyed.

Art. 95110 Extent of retention of existing data

1 The cantons decide how much of the existing map content should be retained, onthe basis of the federal data model and the cantonal additions.

2 The quality of the data must be clearly indicated by the corresponding attribute.

Art. 96 Sheet boundaries

The existing sheet boundaries are in general retained.

Art. 97 Data capture

Digitisation is carried out on the basis of the original map.

Chapter 3: Accuracy and Reliability Requirements

Section 1: General Provisions

Art. 98 Reference points (for digitising set-up procedure)A transformation (adjustment for scale and distortion) should be carried out based

on the largest possible number of well distributed reference points (with a minimumof five). Extrapolation must be avoided.






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Art. 99 Accuracy

Accuracy is defined in terms of the guidelines given in Articles 101 and 103. If theprescribed accuracies cannot be maintained, further action should be arranged in

consultation with the cantonal surveying supervision service.

Art. 100 Reliability

The following checks must be carried out:

a. check plots at the scale and in the format of the cadastral map;

b. consistency checks for the "landownership" layer within the whole perime-ter;

c. comparison of the old and new areas of properties: the cantons decide howto deal with any differences.

Section 2:Accuracy with Semi-Graphic and Partly Digital Survey Work

Art. 101 Adjustment of old cadastral maps

1 For maps on card, the planimetric accuracy (standard deviation) at reference pointsand the maximum residual error vectors on transformation (adjustment for scale anddistortion) must meet the following benchmarks:

1 : 500 8.0 cm max. 24.0 cm1 : 1000 16.0 cm max. 48.0 cm1 : 2000 32.0 cm max. 96.0 cm

2 For maps on aluminium plates, the benchmark figures given in paragraph 1 aboveare reduced by 25%.

Art. 102 Comparison of coordinates of computed points

1 The congruency between previously computed points and their digitised coordi-nates should be checked.

2 The benchmarks given in Article 101 must be followed. The maximum valuecorresponds to the largest discrepancy on an individual point.

Section 3: Accuracy with Graphic Survey Work

Art. 103 Adjustment of old cadastral maps

The planimetric accuracy (standard deviation) of reference points and the maximumresidual error vectors on transformation (adjustment for scale and distortion) must be

within two times the values given in Article 101.


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Chapter 4: Working Procedure

Art. 104 Technical specification

The description of the work is laid down contractually in a technical specification, interms of the source documents and an analysis of the state of the survey beforedigitisation. This specifies:

a. the preparatory work (including inventory of maps);

b. the digitisation itself;

c. checks required (quality, consistency, etc.);

d. completion work; and

e.111 cantonal additions.

Art. 105 Documents to be delivered

The following documents must be delivered on completion:

a. a technical report including an analysis of the state of the survey prior to dig-itisation;

b. control network documentation if new control points were determined;

c. calibration reports for instruments and equipment used;

d. statistics for map adjustment (digitising set-up procedure) including the ac-

curacy of fit to reference points and the maximum discrepancy;

e. consistency checks on the "landownership" layer for each map and for thewhole project;

f. a comparison of the old and new areas of properties for each map togetherwith a statement of differences and tolerances;

g. data in raster format (where available);

h. check plots and/or new cadastral maps where applicable.

Chapter 5: Updating


1 All components of provisionally digitised work must be updated.

2 The re-establishment of boundary markers must be based on the original survey.



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Art. 107 General provision

All mutations must be integrated into the control network of the underlying refer-ence system of the provisional digitisation so as to guarantee adherence to the

neighbourhood accuracy principle.

Art. 108 Boundary mutations

Boundary point coordinates provided from the provisional digitisation must bereplaced by computed values from any available original observation documents.

Title 9: Approval and Payment

Chapter 1: Approval112

Art. 109113

1 To apply for approval in accordance with Article 30 OCS, the following docu-ments must be submitted to the Federal Directorate of Cadastral Surveying:

a. the application for approval;

b. where necessary, confirmation that defects detected in the preliminary in-spection in accordance with Article 27 OCS have been corrected;

c. all documents from the cantonal approval process, including the report bythe cantonal surveying supervision service on the execution and verificationof the cadastral surveying;

d. the data inspection report of a checking service designated by the FederalDirectorate of Cadastral Surveying, certifying that the cadastral surveyingdata conforms to the federal data model and is free of error.

e. the final accounts.

2 The Federal Directorate of Cadastral Surveying may specify in the programmeagreement with the canton that further documents and data must be submitted.

Chapter 2: Payment

Art. 110114 Documentation

Payment shall be calculated based on the documentation in accordance with Article109.





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Art. 111115 Guarantee of payment

1 Payment is guaranteed within the framework of the provisions of Article 30bis116OCS.

2 The provisions include, as minimum, details of the contracting parties, the servicesto be carried out by each, the payment conditions and procedures and the proof thatthe work has been completed.

3 The Federal Directorate of Cadastral Surveying specifies the documents to beprovided for each work.

Art. 112117

Title 10: Final ProvisionsChapter 1: Repeal of Current Legislation

Art. 113

The following are repealed:

a. the Directives of 29 August 1925118 on the demarcation, land parcel surveyand updating of the cadastral survey covering Swiss Federal Railway prop-erty;

b. the Directives of 21 May 1927119 on the production of copies at 1:1000 scaleof cadastral plans showing all railway property;

c. the Instruction of 18 October 1927120 on the use of polar coordinate methodswith optical distance measurement on cadastral surveys;

d. the Instruction of 24 December 1927121 on the production of a general mapwithin the cadastral survey;

e. the Directives of 14 March 1932122 on the maintenance of survey controlpoints;

f. the Directives of 23 December 1932123 on the updating of copies at 1:1000scale of the cadastral plan and the maintenance of survey control points onrailway property;

115 Amended in accordance with No. I of the DDPS Ordinance of 11 March 2003 (AS 2003514).

116 This article has been repealed.117 Repealed by No. I of the DDPS Ordinance of 5 June 2008, with effect from 1 July 2008

(AS 2008 2759).118 Not published in the AS.119 Not published in the AS.120 Not published in the AS.

121 [BS 2 613; AS 1955 801 Art. 22, 1975 109 Art. 20 Para. 1]122 [BS 2 588]123 [BS 2 622]


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g. the Directives of 30 June 1967124 on the employment of personnel on thecadastral survey;

h. the Regulation of 30 June 1967125 on the granting of authorisation to survey-

ing technicians to work on the cadastral survey;i. the Directives of 28 November 1974126 on the reproduction and updating of

the general map within the cadastral survey;

k. the Directives of 28 November 1974127 on the use of automated data proc-essing in land parcel survey.

Chapter 2: Transitional Provisions

Art. 114 Initial survey replacing old definitively approved surveys1 Definitively approved surveys which were produced under the regulations in forceprior to 15th December 1910 must be replaced by an initial survey (resurvey) inaccordance with the new regulations.

2 Other definitively accepted surveys which were produced under the regulations inforce prior to 10th June 1919 must be replaced by an initial survey (resurvey) inaccordance with the new regulations if:

a. the original determinations of control traverses and detail points exceed the1919 tolerances; or

b. the detail survey in Instruction Zone II was carried out by plane table meth-ods in accordance with letter a above.

Art. 114bis 128

Art. 115 Continued validity of previous law

For work which is carried out or continued in accordance with the old regulationsthe following remain in force:

a. the Instruction of 24 December 1927129 on the production of a general map

within cadastral surveying;

b. the Directives of 28 November 1974130 on the reproduction and updating ofthe general map within cadastral surveying;

124 [AS 1967 1025]125 [AS 1967 1028]126 [AS 1975 109]127 [AS 1975 115]128 Inserted by No. I of the DDPS Ordinance of 11 March 2003 (AS 2003 514). Repealed by

No. I of the DDPS Ordinance of 5 June 2008 (AS 2008 2759).129 [BS 2 613; AS 1955 801 Art. 22, 1975 109 Art. 20 Para. 1]130 [AS 1975 109]


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c. the Directives of 28 November 1974131 on the use of automated data proc-essing in land parcel survey.

Art. 115a132 Transitional provision relating to amendment of 5 June 2008The timetable for completion of the technical amendments made necessary by theamendment of OCS dated 21 May 2008133 and the present amendment of this Ordi-nance will be specified in the programme agreement.

Chapter 3: Commencement

Art. 116

This Ordinance comes into force on 1 July 1994.

131 [AS 1975 115]


133 AS 2008 2745


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Annex A134(Art. 7 Para. 2, Art. 8 Para. 5, Art. 9 Para. 1)

Federal data model described in INTERLIS

134 This Annex applies in the version of 18 Dec. 2001 The text of this Annex is not publishedin the AS. Separate copies of the Ordinance including Annex may be obtained from theFederal Directorate of National Surveying, 3084 Wabern, (see AS 2003 514).


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Annex B135(Art. 64)

Extracts for the management of the land register and technicaldocumentation

Initial survey Renovation Continuous updating Periodic updating

Information layer: Control points

- Instrument calibra-tion reports

- Design of observingschemes

- Proposal for monu-mentation

- Original measure-ments (observations)

- Original computa-tions

- Network and errordiagram

- Map or plan ofpointsa

- Station descriptionsa

- Contractor's report



- Proposal for monu-mentation

- Measurements(observations) forrenovation

- Computations forrenovation

- Network and errordiagram





- Measurements(observations) forupdating work

- Computations forupdating work

- Extract of networkand error diagram






Information layer: Land cover


- Original plans usedfor the work

- Aerial photographs



- Documentation ofchecks

- Digitising set-upadjustment reports











- Measurements(observations) forupdating work )


- Documentation of

checks



- Measurements(observations) forupdating work )






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Initial survey Renovation Continuous updating Periodic updating

Information layer: Single objects























Information layer: Heights





















Information layer: Local names

- Names plan



- Names plan



- Extract of namesplan with old/newversions



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Information layer: Landownership








- Property description- Contractor's report






- Area comparison



- Property description






- Plan and table ofchanges (mutations)

Information layer: Pipelines




















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Information layer: Territorial bounda-ries

- Instrument calibra-

tion reports- Original plans used

for the work






- Instrument calibra-

tion reports- Original plans used

for the work







- Original plans used

for the work- Measurements

(observations) forupdating work



- Plan extract of oldand new territorial

boundaries forFDCS/Swisstopo

Information layer: Permanent landslip areas (land subject tocontinuous movement)








- Plans showingpermanent landslipareas









- Plans showing

permanent landslipareas





- Plans showingpermanent landslipareas

Information layer: Building addresses

- Location plan androad/street index






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Information layer: Administrative divisions

- Sheet boundariesa

- Documentation of

checks


- Sheet boundaries a

- Documentation of

checks


- Sheet boundaries a

- Documentation of

checks

a Document to be updated


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Annex C136



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Supplementary Provisions implementing the Swiss Civil Code211.432.21