Astragal


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astragal

[′as·trə·gəl]
(building construction)
A small convex molding decorated with a string of beads or bead-and-reel shapes.
A plain bead molding.
A member, or combination of members, fixed to one of a pair of doors or casement windows to cover the joint between the meeting stiles and to close the clearance gap.

Astragal

A member or combination of members, fixed to one of a pair of doors or casement windows to cover the joint between the meeting stiles and to close the gap in order to prevent drafts, passage of light, air or noise.

astragal

An overlapping astragal, 3
astragal, 1: in Greek architecture
1. A bead, usually half-round, with a fillet on one or both sides. It may be plain, but the term is more correctly used to describe the classical molding consisting of a small convex molding decorated with a string of beads or bead-and-reel shapes.
2. A plain bead molding. Also called roundel, baguette, or chaplet.
3. A member, or combination of members, fixed to one of a pair of doors or casement windows to cover the joint between the meeting stiles and to close the clearance gap; provides a weather seal, minimizes the passage of light and noise, and retards the passage of smoke or flame during a fire. Also see overlapping astragal, split astragal.
References in periodicals archive ?
In her introduction, Smith also presents Astragal as an aestheticized object, which she has come to associate with her own rise to fame and rebellious femininity.
There are the facts of Astragal, which are easy enough to pin down: the protagonist, Anne, 19 years old, escapes from the prison school where she has been serving a seven-year sentence.
It is impossible, in reading Astragal, not to be reminded of the fact that Sarrazin wrote the book from the confines of a prison cell.
An example is an exit device and automatic flush bolts or two exit devices and an overlapping astragal.
Normally, an astragal is put in when a pair of fire doors are installed, because many fire doors require the protection of an overlapping astragal to pass the test for a three-hour fire label.
Although they often have astragals, exterior doors of a facility being modified seldom are fire doors.
Repeat this step for the column bottom, the astragal (P), and the column top for both column assemblies.
TOTAL RESISTANCE: Because exterior door sills are particularly vulnerable to rot, decay, and other damage, the house features Z-Series composite entry-door sills and astragals for French doors from Endura Products.
Make certain there are no missing or improperly installed astragals for pairs of swinging doors.
Most electric lock manufacturers provide devices with a choice of finishes to match or compliment the finish of existing door hardware (for example, knobs, handles, hinges, kick plates, astragals, and frames).
PEMKO offers a selection of thresholds, weatherstripping, door bottoms, and astragals in a new anodized satin nickel finish that complements other satin nickel, brush nickel, or pewter hardware.
Patented top-latching mechanism interlocks the door to the frame without the need for floor strikes, fire bolts, center locks, or astragals and coordinators.