ISO 22497:2021 Doors, windows and curtain walling — Curtain walling — Vocabulary. 3.15 mull support device designed to transfer the dead load of the infill to the framing members (see EigureAU) Note 1 to entry: When the mull material is glass, the term used is “glazing support”. 3.16 insulating glass unit IGU composite unit of two or more panes of glazing hermetically sealed to provide an improved performance of thermal and acoustic insulation (see Figure A.4) 3.17 internal glazing gasket preformed resilient shaped length of sealing material installed between the internal face of a glass pane, insulating glass unit (311.6) or infill panel (3.14) and its surrounding frame or glazing bead (3111) (see EigureA.3 and FigureAA) 3.18 jamb vertical framing member positioned at the vertical edge of the curtain walling (3.6) (see Figure A.1) 3.19 movement joint joint to accommodate thermal or other movements arising from the curtain walling (16) or the supporting structure 3.20 mullion vertical framing member of a curtain walling (16) (see Figure Al Figure A.2 and Figure A.3) 3.21 perimeter seal joint between the curtain walling (16) and adjacent construction designed to give continuity at both the air and water barriers of the wall (see Figure Ad) 3.22 pressure equalization method of sealing and compartmenting the wall that enables the rapid minimization of differential air pressure between cold facade cavities or glazing rebates and the external air (see Figure A.4) 3.23 pressure plate length of profiled material attached to mullions(12.) and/or transoms 311Z) around the perimeter of a pane of glass, insulating glass unit (3116) or infill panel (114) to provide restraint and usually compress the glazing gasket (see Figure A.3. Figure A.4 and Figure A.11)ISO 22497 pdf download.
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