freeboard

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freeboard

the space or distance between the deck of a vessel and the waterline

freeboard

[¦frē‚bȯrd]
(analytical chemistry)
The space provided above the resin bed in an ion-exchange column to allow for expansion of the bed during backwashing.
(chemical engineering)
In a fluidized-bed reactor, the space between the top of the reaction bed and the top of the reactor.
(civil engineering)
The height between normal water level and the crest of a dam or the top of a flume.
(engineering)
The vertical distance in a water tank between the maximum water level and the top of the tank.
(naval architecture)
The vertical distance from the intersection of the top of the freeboard deck amidships with the outer surface of the side plating to the upper edge of the summer load line, or in general terms, the distance from the waterline to the deck.

freeboard

In a water tank, the vertical distance between the maximum water level and the top of the tank.
References in periodicals archive ?
The project used Sherwin Williams SeaGuard 5000HS Epoxy for the remaining 30 percent of the freeboard, with SherwinWilliams Polysiloxane XLE-80 HAPS Free Epoxy Siloxane applied as a top coat on the entire area.
The inlet should have a freeboard of 0.15 m above h, the height of the water surface.
The depth of the notch, D, is h plus a freeboard of 0.15 m.
Net freeboard is the distance between the maximum design high-water level or flood peak and the top of the structure (after settlement).
The net freeboard should be sufficient to prevent waves or spray from overtopping the embankment or from reaching that portion of the fill that may have been weakened by frost action (which rarely exceeds 0.15 m).
Determine the net and gross freeboard for a pond having 0.6-ha water surface area and an exposure length of 180 m.
Additional freeboard should be added as a safety factor where lives and high-value property would be endangered by an embankment failure.
Allow a net freeboard of 0.6 m and a flow depth of 0.3 m in the flood spillway.