ZTV modelling
Computer generated modelling of theoretical visibility for any project.
This is normally based on Terrain 50 or Terrain 5 OS height data, with woodland and settlement areas added as visual barriers to generic predetermined heights. The proposed development is input as a grid of points to a given height representing the proposed built form.
The result is a graduated viewshed representing the proportion of the proposed development area that is theoretically visible from any given location. We can also provide similar mapping for a single feature, but graduated to show the vertical proportion that may be visible.
This ZTV modelling is a useful initial test and baseline to assist with narrowing down field work verification of likely visibility. Many Local Planning Authorities now expect to see this sort of computer modelling as part of LVIA/LVA submissions.
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ZTV modelling
Computer generated modelling of theoretical visibility for any project.
This is normally based on Terrain 50 or Terrain 5 OS height data, with woodland and settlement areas added as visual barriers to generic predetermined heights. The proposed development is input as a grid of points to a given height representing the proposed built form.
The result is a graduated viewshed representing the proportion of the proposed development area that is theoretically visible from any given location. We can also provide similar mapping for a single feature, but graduated to show the vertical proportion that may be visible.
This ZTV modelling is a useful initial test and baseline to assist with narrowing down field work verification of likely visibility. Many Local Planning Authorities now expect to see this sort of computer modelling as part of LVIA/LVA submissions.
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