A Crash Course for Load Ratings and Bridge Posting Signs
By David Johnson, PE Have You Ever Wondered What Those Weight Signs Posted at the Ends of a Bridge Mean? These weight posting signs display the maximum safe weight for a vehicle. Since there are a number of different vehicle sizes and shapes on the roads today, different types of vehicles called “Legal Loads” are… Read More »
Tags: Bridge Deck, Bridge Inspection, Bridge Posting Signs, Bridge Rehabilitation, FDOT, Legal Load, Load Ratings, MBE, Structural engineering, Superstructure
The Many Benefits of Elevation-derived Hydrography
By Tyler Kaebisch Hydrography data is crucial to a wide range of essential applications, from infrastructure management to flood mitigation. State agencies, soil and water conservation districts, engineering departments, and more all rely on stream and river data. About the Expert: Tyler Kaebisch is a project manager in the aerial mapping group at Ayres, He’s… Read More »
Tags: DEM, Digital Elevation Model, Elevation-derived Hydrography, hydro-DEM, Hydrography, Hydrography Data, LiDAR, River Data, Stream Data, USGS 3DEP Elevation Data, USGS 3DEP Lidar, Watershed Stream Networks
Managing Stormwater in Impervious Environments
By Pete Kolaszewski, PE Water that collects after a rain or snowmelt must go somewhere. It may pool and eventually evaporate and/or seep into the ground. It may follow the contour of the land and run into a stream or ditch. In either case, vegetation slows the water’s flow, promotes infiltration, and helps filter out… Read More »
Tags: Bioretention, Detention Basins, Eco-roof, Green Roof, Permeable Pavement, Stormwater, Stormwater Management, Underground Detention Systems, Vegetative Roof