Contraction Reach

  • Reduced flow area, increased stuffs
  • Ineffective flow area: area not wet during summer but wet during moonson seasons
  • For bridge, river stations only at points of new river section (excludes constricted portion)
  • Afflux
    • There'll be an assignment regarding this

Procedure

Geometry

  • Enter four cross sections
  • Bridge/Culvert > Add Bridge > Deck:
    • Weir Coef. = 2.5
  • Bridge/Culvert > Pier:
    • Copy piers 20m apart upto 4 count
  • Bridge/Culvert > Sloping Abutment:


![[Pasted image 20260827133018.png]] ![[Pasted image 20260827134119.png]]

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