• NODE- a point at which lines or pathways intersect or branch; a central or connecting point.
• SMOKE CURTAIN- A barrier that restricts the spread of smoke.
• GRANDFATHERED- a provision in which an old rule continues to apply to some existing situations while a new rule will apply to all future cases.
• VARIANCE- the state, quality, or fact of being variable,divergent, different, or anomalous.

Wet wall- Is a structural wall that contains pipping of different variety.

curtain wall- an exterior having no function

egress- to go out  or to leave

sheer wall-  a structural system composed of braced panels to counter the effects of lateral load acting on a structure.

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