Technical and GIS preparation

Published: 15 November 2015
Last edited: 13 January 2020
Mapped data depicting height contours is the key to creating a 3D model, as each layer of the model corresponds with a contour height. At the Authority's offices two sets of 1:10,000 scale maps depicting contour heights at 20m intervals, and the coastline, were printed to fit the model tables exactly. At the community's request we also printed large format topographic/satellite imagery of the area. This phase also involved sourcing and purchase of model construction and depiction materials. Research was undertaken prior to ascertain what what available locally and how much it would cost. We used foamcore board for the model, acrylic school paints, acrylic wool yarn and pushpins for depicting information on to the model. The amount of foamcore or carton board purchased is dependent on how many contour layers will be depicted on the model. This phase was done entirely by the Authority's facilitator due to time constraints. Concurrently the Djunbunji organisation built the tables for the models, using specifications adapted from Rambaldi, G (2010) Participatory 3 Dimensional Modelling: Guiding Principles and Applications

Classifications

Category
Collection of baseline and monitoring data and knowledge
Management planning
Technical interventions and infrastructure
Scale of implementation
Local
Subnational

Enabling factors

Knowledge of GIS and mapped information systems. Access to appropriately scaled GIS information and a large format printer - access to appropriate building and depiction materials. Assistance from other experienced P3DM facilitators assisted in establishing quantities of materials required

Lessons learned

Access to, and connecting early with, mapping experts and accurate GIS data will ensure that base maps are appropriate for the P3DM exercise and that any mistakes are addressed early. Involving representatives of the Indigenous community in the development of the base layers in the Authority's office would have further built their capacity and ability to replicate the process with other groups The use of foamcore board was based on its structural longevity in tropical climates, however many practitioners will not have that option due to availability or cost. Carton board builds models of equal quality. The tables for the models should include proper support rails for the models so that warping and bending do not occur