Door and window types
The NEN sheets distinguish more names than motions: a valraam and an uitzetraam both tilt, differing in which rail hinges and which way it opens. Each type is shown below with its plan mark.
Window types (14)
fixed light fixedside-hung turntilt-turn turn-tilthopper (bottom-hung, inward) tilt
horizontal hinges do not show in planawning (top-hung, outward) tilt
horizontal hinges do not show in planpivot tumble
horizontal hinges do not show in planvertical pivot pivotprojecting projectparallel opening paralleldouble casement turnhorizontal sliding slidevertical sash slide-verticalturn-slide turn-slidefolding fold
Door types (13)
single hinged1 leaf turndouble doors2 leaves turn + turnsliding1 leaf slidedouble sliding2 leaves slide + slidefolding (concertina)1 leaf foldpivot1 leaf pivotrevolving1 leaf revolvesingle, double-acting1 leaf double-actingdouble, double-acting (saloon)2 leaves double-acting + double-actingoverhead tilting1 leaf overheadsliding patio door (fixed + sliding)2 leaves fixed + slidesliding patio door, 3-panel3 leaves fixed + slide + fixedpatio door (fixed + hinged)2 leaves fixed + turn
What a mark says
- A solid leaf line opens outward, a dashed one inward — that is how the NEN sheets encode direction.
- The hinge side is named
aorbafter the wall's own direction, so it survives the wall being redrawn. - Horizontal hinges (head, sill) exist in the document but cannot be seen in plan; a valraam and an uitzetraam draw identically there.
- A pui is one frame holding fixed glazing beside opening parts — one hole divided by mullions, not two openings with a pier invented between them.