Gabions for Headwalls or Wingwalls


Headwalls or wingwalls improve the flow of water into and out of conduits, provide anchoring support for the pipe and prevent dislodging under excessive pressures, control erosion and scour resulting from high water velocities and turbulences and to prevent adjacent soil from sloughing into the waterway opening. Headwalls are necessitated by limited space and poor soil conditions.


The inherent flexibility and porous nature of gabions address the design concerns of headwalls which must properly dissipate the energy of water flow, withstand or relieve soil and hydrostatic pressures, and in areas prone to such seasonal changes, withstand the effects of frost action acting upon the soil. preclude detrimental heave or lateral displacement resulting from frost action.