active leaf

active leaf

[′ak·tiv ′lēf]
(building construction)
In a door with two leaves, the leaf which carries the latching or locking mechanism. Also known as active door.

active leaf, active door

In a door having a pair of leaves, that leaf to which the latching or locking mechanism is attached; usually the leaf that is permitted to open first; sometimes both leaves are active.
References in periodicals archive ?
The existing models within the range, namely, the Geze Powerturn IS/TS is a double-leaf system with the Geze Powerturn swing door drive on the active leaf and a Geze TS 5000 L or Geze TS 4000 mechanical door closer on the passive leaf, said a statement from the company.
This is a key advantage for areas where mainly the active leaf is used, e.
During the pasture management, it is required the maintenance of photosynthetically active leaf area and, at the same time, the opportunity for animals to harvest large quantities of high quality leaf tissue, in order to maximize the conversion efficiency of the forage produced.
More chlorophyll increased photosynthetic active leaf area more will be assimilation resulting in better growth and development (Evans 1983; Daughtry et al.
The treatments were an uninjured control and all combinations of the extent of defoliation (estimated as 25 and 50% active leaf area removed) and the time of defoliation (first and second).

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