SWMM56

Subject:    How are  Negative   Transect   Elevations   Used  in  SWMM5 ? You can have  negative   elevations  in the Transects of SWMM 5 as the  elevations  are transformed internally to relative depths above the node inverts in the SWMM 5 engine (Figure 1).   The slope of the link is calculated from the link offset  elevations  (Figure 3) and the cross sectional information for the irregular link in SWMM 5 (Figure 2) is computed from the  Transect  data (Figure 4).   The Water Surface elevation of the link is based on the node inverts (Figure 5). Figure 1 .   Transect  Editor of SWMM 5 Figure 2.   The  Transect  Data is  Used  in the Irregular of HEC-RAS Shape of SWMM 5 Figure 3 .  The slope of the link with the  Transect  is calculated from the link upstream and downstream offset  elevations  – not the  Transect...

Subject:    How are Negative Transect Elevations Used in SWMM5?   How are Negative Transect Elevations Used in SWMM5? by  dickinsonre Subject:    How are Negative Transect Elevatio ns Used in SWMM5? You can have negative elevations in the Transects of SWMM 5 as the elevations are transformed internally to relative depths above the node inverts in the SWMM 5 engine (Figure 1).   The slope of the link is calculated from the link offset elevations (Figure 3) and the cross sectional information for the irregular link in SWMM 5 (Figure 2) is computed from the Transect data (Figure 4).   The Water Surface elevation of the link is based on the node inverts (Figure 5). Figure 1 .  Transect Editor of SWMM 5 Figure 2.   The Transect Data is Used in the Irregular of HEC-RAS Shape of SWMM 5 Figure 3 .  The slope of the link wi...