Addition of candidate future roads

If your management area includes green field operations you may need to add candidate roads that will be incrementally built in future planning periods. You may also need to add candidate roads if your existing road data set has not capture the "in bush" roads that connect from the permanent road network in to the landings where wood is loaded on to trucks. Candidate roads fill in the holes left by an incomplete existing road network and provides full connectivity of all of the blocks in the forest model. The Patchworks scheduler will then have choices to 'build' the candidate roads as required to access new areas and implement the management strategy.

There are two general philosophies when it comes to adding candidate areas. One involves intensive planning time and additional costs, while the other is an inexpensive approach that provides a quick approximation. It does not matter to Patchworks which method you chose simply that your final road file contains the required fields and information.

In the intensive method, a road planner could take into account contours, height of land, substrate material and river crossings to chose a path for future road construction for operational areas where existing roads are missing. This precise method will result in exactly the set of candidate roads that are required for full access.

In the approximation method some of the common steps involve:


Patchworks provides a tool (in the Data Prep folder of the Application Launcher) to generate a lattice. The lattice generation tool will create an ESRI Generate file based on the parameters filled in the wizard (the extent, the height and width of the squares, rows and columns of lattice and output file name).


It is important to remember that candidate roads do not currently exist and will therefore be "built" by the model when they are required. It is important add an associated construction cost with these segments. Existing segments will not require a construction cost.