4.7.1.5.1.3

Hybrid Systems

Code

Hybrid systems that incorporate surge weirs in the overflow gutters to provide for in-POOL surge shall meet all of the requirements specified for overflow gutters (with the exception of the surge or balance tank, since the surge capacity requirement will be alternately met by the in-pool surge capacity).

Annex

Hybrid systems that incorporate surge weirs in the overflow gutters to provide for in-POOL surge shall meet all of the requirements specified for overflow gutters Since the number of BATHERS determines the type of surface overflow system in use, the hybrid systems should be able to meet all code requirements regardless of how many BATHERS are present and which components are in active use. When the POOL is inactive (no bathers in the water) the surge weirs provide surface skimming. The operating water level during the period when there are no BATHERS in the water is designed to be below the rim of the gutter and flows over the surge weirs by gravity. When BATHERS enter the water, the level rises (in-pool surge capacity), the surge weir openings close, and the water flows over the gutter as in standard gutters.

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