IS 7784 : 2010

Code of Practice for Design of Parallel Runway Drainage

FAA AC 150/5320-5D
CurrentSpecializedCode of PracticeTransportation · Roads and Pavement
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Summary

IS 7784 covers drainage design for airports — ensuring rapid removal of surface water from runways and taxiways for safe aircraft operations. Covers both surface (slopes, channels, inlets) and subsurface (perforated pipes, filter media) drainage systems.

Code of practice for design of surface drainage and subsurface drainage for airport runways, taxiways, and aprons.

Key Values
Runway transverse slope1.0-1.5%
Taxiway transverse slope1.0-1.5%
Minimum longitudinal slope0.5%
Practical Notes
! Airport drainage design uses the Rational Method — same as highway drainage.
! Runway must drain within minutes — ponding causes hydroplaning risk for aircraft.
! Subsurface drainage is critical at joints in rigid pavements to prevent pumping.
Cross-Referenced Codes
IS 1742:1972Code of Practice for Drainage (Outside Buildi...
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IS 458:2003Precast Concrete Pipes (With and Without Rein...
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airport drainagerunway drainagesurface drainagesubsurface drainagetaxiway