Christopher L Chatfield, P.E.

tutorial microstation civil engineering alignment ss4 cross sections horizontal and vertical constraints openroads template drop corridor modeler digital terrain model geopak open roads channel hydraulics scour dynamic storage indication storage indication scs hydrograph volume flow inputs curve number hydrography watershed rainfall node report routing link reach review subcatchment hydrocad water resources assembly surface corridor parent equivalent child graphical editing complex by element company profiles style blocks cells levels layers cad autocad civil 3d autodesk add station equation single offset entire element simple arc from element arc between points circle chamfer between elements line between arcs line from element line to element line between points accudraw vertical inroads discussion constraint label feature labeling end condition parent components constrained template feature definitions simple templates guide brief guide superelevation flag superelevation parametric constraint point control lesson 3d visualization external references hecras terrain shp arcgis dgn 3d tin esri design comparison dtm interoperability mxd research hec-ras ss3 lidar velocity procedure oxbow lakes debri abutment highway design pier bridge stream stability hec 18