Glossary of Terms
Words beginning with M, N, O
- M -
MAILBOX: A box at or near a dwelling for the occupant's mail.
MASTIC: Heavy-consistency compound that may remain adhesive and pliable with age. Is typically a waterproof compound applied to exterior walls and roof surfaces. Descriptive of compounds that remain elastic and pliable with age
MDF: Medium density fibreboard. A special type of tempered hardboard with a fine, smooth finish. MDF is used in cabinet making.
MEETING RAIL: The members of a window or sliding door that come together in an interlocking action when the window/door is closed.
MEMBER: Piece of timber that is part of a frame or structure.
MID-RAIL: Also called meeting stile and meeting rails. The horizontal members of a sliding glass door, a sliding window, or the vertical members of a hung window where two panels meet and create a weather barrier.
METAL STRAP: Short lengths of metal strap 25x1 (1/16x1) used to fix members together to resist uplift.
MG: Gauged smooth finish.
MSG: Machine stress graded.
MULLION: The vertical or horizontal divisions or joints between single windows in a multiple window unit. A divider in a window.
MUNTIN: A vertical framing member set between two rails in a door or in paneling. A short vertical or horizontal bar used to separate panes of glass in a window or panels in a door. A term often confused with mullion.
- N -
NAIL: A thin pointed piece of metal that is hammered into material as a fastener.
NAIL PLATE: Gang nail plate; Metal plate with rows of sharp points that are hammered into butt-jointed timber to secure the join.
NOGGING: Dwang; A short piece of timber set between two studs, joists, rafters or purlins to keep them rigid.
NOMINAL SIZE: The rough-sawn size of a piece of lumber. Before the lumber is planed or dressed. The nominal size is usually greater than the actual dimension. e.g. 100x50 (2 x 4) actually equals 90x45 (1 1/2" x 3 1/2").
- O -
O.C.: On center; (See CENTERS)
OCTAGON: A polygon with 8 sides. Octagonal: Having eight sides and eight angles. Of or relating to or shaped like an octagon.
ON CENTER: (O.C.) Crs, centers. The term used to define the measured spacing between studs, joists, rafters, etc. O.C. measurements are taken from the center of one member to the center of the adjoining member.