consts.h File Reference

Header file for SWMM constants. More...

#include "version.h"

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Macros
#define	VERSION   PROJECT_VERSION_SWMM_FORMAT
	SWMM version number.
#define	MAGICNUMBER   516114522
	Magic number used to identify a SWMM binary file.
#define	EOFMARK   0x1A
	End of file mark used in SWMM binary files.
#define	MAXTITLE   3
	Maximum number of title lines.
#define	MAXMSG   1024
	Maximum number of characters in a message.
#define	MAXLINE   1024
	Maximum number of characters per input line.
#define	MAXFNAME   259
	Maximum number of characters in a file name.
#define	MAXTOKS   40
	Maximum number of items per line of input.
#define	MAXSTATES   10
	Maximum number of computed hydraulic variables.
#define	MAXODES   4
	Maximum number of ODE's to be solved.
#define	NA   -1
	NOT APPLICABLE code.
#define	TRUE   1
	Value for TRUE state.
#define	FALSE   0
	Value for FALSE state.
#define	BIG   1.E10
	Generic large value.
#define	TINY   1.E-6
	Generic small value.
#define	ZERO   1.E-10
	Effective zero value.
#define	MISSING   -1.E10
	Missing value code.
#define	PI   3.141592654
	Value of pi.
#define	GRAVITY   32.2
	Acceleration of gravity in US units.
#define	SI_GRAVITY   9.81
	Acceleration of gravity in SI units.
#define	MAXHOTSTARTFILES   10
	Maximum number of hotstart files.
#define	MAXTIMESERIESCACHESIZE   10
	Maximum number of time series rows that can be cached to memory to speed up simulation \TODO Allow users to set this value in the input file and GUI.
#define	PHI   1.486
	Units factor in Manning Equation.
#define	MIN_RUNOFF_FLOW   0.001
	Minimum runoff flow (cfs)
#define	MIN_EXCESS_DEPTH   0.0001
	Minimum excess depth (ft) = 0.03 mm.
#define	MIN_TOTAL_DEPTH   0.004167
	Minimum total depth (ft). = 0.05 inches.
#define	MIN_RUNOFF   2.31481e-8
	Minimum runoff (ft/sec) = 0.001 in/hr.
#define	FLOW_TOL   0.00001
	Flow tolerance (cfs)
#define	DEPTH_TOL   0.00001
	Depth tolerance (ft)
#define	VOLUME_TOL   0.01
	Volume tolerance (ft3)
#define	FUDGE   0.0001
	Fudge factor (ft or ft2)
#define	GPMperCFS   448.831
	Gallons per minute per cfs.
#define	AFDperCFS   1.9837
	Acre-feet per day per cfs.
#define	MGDperCFS   0.64632
	Million gallons per day per cfs.
#define	IMGDperCFS   0.5382
	Imperial million gallons per day per cfs.
#define	LPSperCFS   28.317
	Liters per second per cfs.
#define	LPMperCFS   1699.0
	Liters per minute per cfs.
#define	CMHperCFS   101.94
	Cubic meters per hour per cfs.
#define	CMDperCFS   2446.6
	Cubic meters per day per cfs.
#define	MLDperCFS   2.4466
	Million liters per day per cfs.
#define	M3perFT3   0.028317
	Cubic meters per ft3.
#define	LperFT3   28.317
	Liters per ft3.
#define	MperFT   0.3048
	Meters per ft.
#define	PSIperFT   0.4333
	Pounds per square inch per ft.
#define	KPAperPSI   6.895
	Kilopascals per psi.
#define	KWperHP   0.7457
	Kilowatts per horsepower.
#define	SECperDAY   86400
	Seconds per day.
#define	MSECperDAY   8.64e7
	Milliseconds per day.
#define	MMperINCH   25.40
	Millimeters per inch.
#define	SEPSTR   " \t\n\r"
	Separator string.
#define	TBLSEPSTR   " \t\n\r,"

Detailed Description

Header file for SWMM constants.

Author

L. Rossman

Date

Created: 2023-07-15

Last updated: 2024-12-30

Version

5.3.0

Various constants used in the SWMM model.

Update history

• Build 5.3.0 (2024-12-30)
  • Added MAXHOTSTARTFILES constant to support saving multiple hotstart files at different times.