Zones of Visual Impact

ZVI / ZTV (Zones of Theoretical Visibility) analysis for Environmental, Landscape and Planning Consultants

The number of Environmental Consultants and Landscape Practices using KeyTERRA-FIRMA for Zones of Visual Impact Analysis has grown considerably in recent years as the need to produce evidence regarding the locating of wind farms and other environmentally sensitive structures and developments has increased. Having been at the forefront of ZVI (also known as ZTV - Zones of Theoretical Visibility) software development working within CAD for many years the KTF ZVI module now includes Field of View output to illustrate the impact on the receptor's field of view (e.g. the angle within the view containing targets from left to right hand extents).

Visibility Studies

The ZVI module is a powerful analysis and presentation tool to assist with visibility studies. Typically working with very large data sets such as OS LandForm Profile DTM and single or multiple targets this can be a major “number crunching” exercise. Linear (e.g. screen planting) and area visual barriers may be built into the analysis.