I am looking for a guidance document for determining if new concrete sidewalk that has either mortar flaking, scaling, or popouts should be removed and replaced? Is there guidance for the percentage of each square that exhibits each of these problems? I have read that mortar flaking and scaling...
The Pond FAQ in HydroCAD suggest that the "pond" be set up as a separate subcatchment with a Tc of zero and CN of 98-100. Is this recommendation just for a wetpond or for all basins? For a dry basin, why would the CN be 98-100 instead of using the CN based on the surface of the basin? Why would...
I am reviewing a 3 acre project where the design engineer has used WIN TR-55 to determine the pre-development peak flows, but uses HEC-HMS to route the post-development flows. The report contains hardly any input or output data for the routing calculations, so he will have to provide additional...
