3D Cadastres Best Practices, Chapter 3: 3D Cadastral Information Modelling

In this chapter we address various aspects of 3D Cadastral Information Modelling. Of course, this is closely related to the legal framework and initial registration as presented in the first two chapters. Cadastral data models, such as the Land Administration Domain Model, which include 3D support, have been developed for legal information...

LandXML encoding of mixed 2d and 3d survey plans with multi-level topology

Cadastral spatial units around the world range from simple 2D parcels to complex 3D collections of spaces, defined at levels of sophistication from textural descriptions to complete, rigorous mathematical descriptions based on measurements and coordinates. The most common spatial unit in a cadastral database is the 2D land parcel-the basic...

Initial Registration of 3D Parcels

Registering the rights of a 3D parcel provides certainty of ownership, protection of rights and unambiguous spatial location. While not all cadastral jurisdictions in the world maintain a digital cadastral database, the concepts of such registration hold true regardless of whether it is a paper-based cadastre or a digital one. Similarly, the...

Mixed 2D and 3D Survey Plans with Topological Encoding

There is a wide range of spatial units in jurisdictions around the world, ranging from simple 2D parcels (spatial units defining 3D column of space) to complex 3D collections of spaces, which are defined at various levels of sophistication from textural descriptions to complete, rigorous mathematical descriptions based on measurements and...

Mixed 2D and 3D Survey Plans with Topological Encoding

A Conceptual Model Supporting a Range of 3D Parcel Representations Through all Stages: Data Capture, Transfer and Storage

Initial Analysis of the Second FIG 3D Cadastres Questionnaire: Status in 2014 and Expectations for 2018

In this paper we present the initial analysis of the second FIG 3D Cadastres questionnaire, spanning the years 2014-2018. The first version of the 3D Cadastres questionnaire was conducted in 2010 and collected the status of 2010 and the expectations or ambitions for 2014. Most of the FIG 3D Cadastres working group members had completed the 2010...

Validity of Mixed 2D and 3D Cadastral Parcels in the Land Administration Domain Model

The Land Administration Domain Model (ISO 19152) (ISO-TC211 2012) defines a specific geometry form which allows the clean and simple mixing of 3D cadastral objects such as volumetric parcels with the more common 2D parcels. It does this by introducing a concept of boundary surfaces, known as “face strings”. The unbounded nature in the vertical...

Axiomatic Definition of Valid 3D Parcels, potentially in a Space Partition

The definition of a valid 3D parcel must be correct and unambiguous, because an error or ambiguity in the definition of the extent of a property can lead to expensive legal disputes or to problems with handling 3D parcels in the information systems or problems during data transfer between two systems. This paper develops a rigorous axiomatic...

ISO Land Administration Domain Model and LandXML in the Development of Digital Survey Plan Lodgement for 3D Cadastre in Australia

The aim of this paper is to explore the implementation issues of 3D Cadastre in Queensland, Australia, which is presently moving towards a full digital lodgement of surveying information, with a focus on validation rules. In Queensland the Electronic Access for Registry Lodgement (EARL) project has already successfully implemented EARL-I, the...