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1) TR-20 is a computer program for the generation and routing of runoff hydrographs. Unlike TR-55, which was developed for manual use, the calculations in TR-20 are far too complex and numerous to be of practical use without appropriate computer software.
9 Μαρ 2021 · TR-20 User Manual - NRCS Irrigation ToolBox. Topics manualzilla, manuals, Collection manuals_contributions; manuals; additional_collections Item Size 65.6M . Addeddate 2021-03-09 12:49:16 Identifier manualzilla-id-5804629 Identifier-ark ark:/13960/t9873ck0g Ocr tesseract 5.0.0-alpha-20201231-10-g1236 ...
TR-20 TR-55 Comparison. The following table summarizes the technical similarities and differences between these three programs. HydroCAD combines the most-used capabilities of TR-20 and TR-55, plus many other techniques and features not provided by either program.
TR-20 is a computer program for the simulation of runoff occurring from a single storm event. The program develops flood hydrographs from runoff and routes the flow through stream channels and reservoirs.
If you are using SCS Unit hydrograph method with SCS loss method, the results should match closely with TR-20 hydrology. TR-20 represents the full-bore implementation of these methods, whereas TR-55 is a more simplified version that lent itself more to hand calculations.
HydroCAD 8.5 provides a new capability to import a TR-20 data file directly into HydroCAD. By using Project|Import|TR-20 most elements of a TR-20 file can be automatically converted to their equivalent operations in HydroCAD, eliminating most of the manual data entry that was previously required.
The local storm water regulation requires a detention basin to be designed for a 100-yr storm and control outflows from 2-yr, 10-yr, and 100-yr storm events so the post-development peak flows are no greater than the corresponding pre-development values.
