Report Describing Testing and Design Recommendations for the Snap-Tite Hydro-Bell

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The objective of this study is to determine the inlet design coefficient for the Snap-Tite Hydro-Bell.

The inlet design coefficient is necessary to accurately predict head loss, or flow, through a high-density polyethylene (HDPE) Snap-Tite Culvert Relining pipe using the Hydro-Bell in submerged inlet and un-submerged outlet conditions.

The inlet coefficient was determined by measuring velocity and pressure drop across the Hydro-Bell inlet device. Measurements were taken in triplicates at head pressures ranging from 1 to 7.5 ft of hydraulic head.

This study determined that the Hydro-Bell’s increase in flow ranged from 15% to 34% (in relation to pressure conditions).

The increase in flow is compared to a standard square end inlet condition typically found in culvert applications.

This report concludes that the Hydro-Bell is effective at increasing the flow in culverts.

 

 

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