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{| class="wikitable"
| Dissipate flow and prevent erosion at inlets and outlets || "*Angular crushed stone, which will ""knit"" or lock together and be less likely to shift, is recommended, however, for aesthetic purpose smooth river run stone may be desired.
| Dissipate flow and prevent erosion at inlets and outlets || "*Angular crushed stone, which will ""knit"" or lock together and be less likely to shift, is recommended, however, for aesthetic purpose smooth river run stone may be desired.
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| *The stone sizing is based on flow velocities at inlets and outlets, but typically ranges between 50 mm and 250 mm.  
| *The stone sizing is based on flow velocities at inlets and outlets, but typically ranges between 50 mm and 250 mm.  
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| *The thickness of the stone bed is twice that of the largest stone diameter.
| *The thickness of the stone bed is twice that of the largest stone diameter.
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| *To prevent erosion of soils beneath the stone and the migration of the stone into the soil, the stone bed should be underlain by a drainage geotextile."
| *To prevent erosion of soils beneath the stone and the migration of the stone into the soil, the stone bed should be underlain by a drainage geotextile."
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| Direct and spread flow throughout a large LID facility or to protect narrow channel sections where flow will concentrate || "*While crushed stone will be less likely to shift, river run stone may be used to create a dry stream bed look.  
| Direct and spread flow throughout a large LID facility or to protect narrow channel sections where flow will concentrate || "*While crushed stone will be less likely to shift, river run stone may be used to create a dry stream bed look.  
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| *The sizing of the gravel will depend on the expected velocities."
| *The sizing of the gravel will depend on the expected velocities."
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