Drawing Set Up
KeyTREE LT Drawing Setup allows you to work in metres, millimetres or imperial settings. You can rescale your drawing if you wish to work in alternative units.

Tree Construction Details
Select from a range of drawings that can be inserted to support your tree survey plans. These include: • General annotation drawings with BS5837 category definitions • BS5837 fence types • The most commonly specified Cellweb ground reinforcement systems, supplied by Geosynthetics Ltd.

Insert Trees from your own data sheets
Define trees by specifying the North, East South and West (NESW) canopy measurements. If necessary, use an eight point NESW to better represent the crown shape. You can offset the canopy from the stem location to represent windblown or leaning trees. Trees will be automatically coloured according to their BS5837 category rating. You can override these default display settings to control the appearance of the canopy, root and stem separately to meet your particular requirements.

Automatically create trees by importing from external data
Define trees by specifying the North, East South and West (NESW) canopy measurements. If necessary, use an eight point NESW to better represent the crown shape. You can offset the canopy from the stem location to represent windblown or leaning trees. Trees will be automatically coloured according to their BS5837 category rating. You can override these default display settings to control the appearance of the canopy, root and stem separately to meet your particular requirements.

Create RPA's using BS5837 calculations and trim them to structures
KeyTREE can automatically calculate the Root Protection Area (RPA) for trees using the BS5837 methodology that is based on the number of stems and their respective diameter(s). RPA’s can be trimmed to features in the drawing to show how the roots may be affected by existing structures.

Display Tree groups
KeyTREE LT allows you to create tree groups as areas or hedges and assign to these significant trees. RPA’s can be defined as an offset to the boundary or drawn manually. Display settings allow you to colour or hatch the canopy and RPA separately. Specific linetypes are available to clearly identify RPA and fence boundaries.

Perform a simple or detailed shadow analysis
KeyTREE LT allows you to assess the shadow cast by the tree canopies based on their surveyed height. You can show shadows as a simplified filled arc from East to North-West or undertake a detailed assessment based on the time, date and site location.