XZ Tables:
“R”, “M” or “N”: The relative resistance (Column 3) is used to vary the bed resistance value (Manning’s n) across the section. Specify an “R” flag for relative resistance factor, an “M” flag to use a material number or an “N” flag (Build 2003-10-AA ) for a Manning’s n value. (Note: As of Build 2003-03-AA, the Relative Resistance command to set the default relative resistance value as a factor or as a material is now redundant and should not be used.).
“E” or “T”: Specify an “E” to use effective area or a “T” to use total area when calculating the flow area (see Section 3.13.6 and Flow Area). If neither is specified, the global value set using Flow Area is used.
“P”: The position values (Column 4) are used to indicate whether an XZ point is left bank (1), mainstream (2) or right bank (3). P values must be entered as 1, 2 or 3. See Section 3.13.5.3.
“A”: The addition values (Column 5) are used to raise or lower the Z value – this is useful, for example, for modelling siltation or erosion of a cross-section, raising, or adding blocked rails to, a weir cross-section, etc.
