This is a guest post by Matthew Anderson, PE CFM. Dana has graciously allowed me to put together a series of posts for her BIM on the Rocks blog! Thanks Dana!
My family typically performs menu select with a bit of a rhyming game based on the day of the week. For example, yesterday was Taco Tuesday. The kids enjoy trying to rhyme what we have to eat based on the day of the week. For this series of posts, I am claiming Wednesday for the similar reason; Wednesday will be henceforth known as Water Wednesday!
I am open to suggestions, or answering questions when it comes to the content of these posts – the only caveat being it needs to highlight the water resources tools available in AutoCAD Civil 3D or Map 3D.
A few years ago when Autodesk University first introduced AU Virtual, I presented a class using the Hydraflow Express Extension. A key component of that class discussed the use of catchment area to define the watershed area to a roadway cross-culvert. Those values were then transferred to Hydraflow Express for a simple runoff calculation and culvert design. There were a lot of viewers, and a good response to the class. One of the key benefits I highlighted was the Express Extension’s simplicity.
In AutoCAD Civil 3D 2013, the Express Extension expands the ability of the user to solve more of the FHWA HDS-5 Culvert types. What was just an “Inlet Edge” input parameter in earlier versions, is now Culvert Type, and Culvert Entrance. This brings Hydraflow Express closer to the requirements and options outlined in Federal Highway Administration HDS-5 document from 2005. (FHWA HDS-5, 2005) .
This expands the available design solution options for roadway culverts in using Hydraflow Express.
Next week, we we will review culvert routing in Autodesk Storm and Sanitary Analysis.
P.S. I know that FHWA recently released a new version of HDS-5 in February 2012.