Perimeter Ground Elevation
BuildingFootprintUSA is proud to announce Perimeter Ground Elevation. This addition will allow you to advance your ground elevation analysis and see beyond the maximum, minimum, and average elevation of a structure. Perimeter Ground Elevation shows the most accurate elevation level at each vertex of our building footprints, creating opportunities for deeper analysis, and a better understanding of each building.
BuildingFootprintUSA’s expansion into Perimeter Ground Elevation (PGE) takes our commitment to offer the highest level of accuracy within our comprehensive dataset to the next level. PGE contains a point layer wherein each point corresponds to the vertices of our building footprints and contains a highly accurate elevation value represented in meters.
Utilizing the highest accuracy digital elevation models is critical to this product and we have taken the time to carefully curate our dataset at a 1 meter or better accuracy. The value of this can be seen in our output where the difference between points with an elevation taken from a 30m accuracy can be seen in striking difference to those we have.
Take this building to the left, without PGE we would know that the building has a minimum elevation of 4.9 and a maximum elevation of 5.52, with the average being ___. While valuable data, in order to take our understanding of this building to the next level of accuracy, it is necessary to include the spatial aspects of it’s elevation. By adding our Perimeter Ground Elevation we can see that there is only one point which falls below 5ft, we can see exactly where this is, and what is around it. This additional understanding can make a world of difference in qualifying flood zones, understanding risk, and ultimately making better business decisions.
Going beyond the minimum, maximum, and average elevation allows you to understand a building within its ground environment without having to go into the field for visuals or measurements. With this dataset you can see which areas of a house are within a flood zone, or the gradient change from the east to the west of a house to better see the structure of the house. A house is only as strong as the foundation upon which it is built, and your analysis is only as strong as your understanding of the house’s foundation.
Sourcing and utilizing the most accurate elevation models to curate this dataset is key to the success of this product. Our PGE coverage is continuing to grow to ensure that each elevation level is as accurate as possible. There is a national, 30 meter digital elevation model that is publicly available, however had we used that, points which can vary by multiple meters are reduced to the same value.
You can navigate back to the Physical and Property Characteristics page here.
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