Architectural and Engineering Glossary

M

Master Key

A key that will operate a number of different locks,each of which is different.

Master Mason

An exceptionally well-qualified mason in the Middle Ages;a position more or less equivalent to that of an architect today.

Master Plan

A plan,usually graphic and drawn on a small scale but often supplemented by written material,which depicts all the elements of a project or scheme.

Master Plumber

An individual licensed and authorized to install and to assume responsibility for contractual agreements pertaining to plumbing,and to secure any permits required for plumbing installations.

Master Switch

A single electric switch in a wiring system which controls the supply of power to a building,or the action of relays or any other remotely operated devices.

MasterFormat

As illustrated in the definition of contract documents,a uniform classification system for construction specifications that is divided into 16 sections,each of which is numbered and named.

MASTERSPEC

A proprietary master specification for the construction industry developed by the American Institute of Architects.

Mastic

1.Any heavy bodied,dough like adhesive compound.2.A sealant with putty like properties.3.A protective coating applied by trowel or spray on the surface of thermal insulation to prevent its deterioration and to weather proof it.

Mastic Asphalt

See asphaltic mastic.

Mat

1.See  matte.2.See mattress.3.A very heavy,flexible blanket of steel mesh,woven wire rope,or chain;used to confine fragments of rock during blasting.

Mat Foundation

A large,thick concrete slab that sustains the load imposed by a number of columns and/or walls;also called a raft foundation or floating foundation.
 

Mat Sink

Same as mat well.

Mat Well

At the entrance of an exterior door,a depression in the floor to hold a fiber doormat. 

Match

In comparing two materials or constructions:an exact or approximate replication.

Match Plane

One of a pair of planes used to prepare matchboards;one cuts the tongue along the edge,and the other cuts the groove.

Matchboards

Boards which have a tongue along one edge and a groove along the other;when installed,the tongue of one board fits into the corresponding groove of the adjacent board and holds it securely.Also see dressed and matched boards.

Matched Floor

A floor laid with matchboards.

Matched Joint,match Joint

The joint along the edge between two matchboards.

Matched Lumber

Lumber having dressed edges and prepared for tongue and groove joints.

Matched Siding

Same as drop siding.

Matching

A system of matchboards,or of sheets of wood veneer,arranged to emphasize grain pattern,as in book matching or herring- bone matching.

Material Costs

The total costs of all materials used on a construction project,including delivery,handling,waste,storage,and taxes.

Material Hose

Same as delivery hose.

Material Platform Hoist

A suspended platform,manually or power operated,for conveying building materials and supplies;usually controlled from a point outside the conveyance.

Material Sample

A small piece of material,which is representative of the whole,that a contractor submits to the architect for approval; includes color,finish,and/or texture.

Material Supplier

Same as supplier. 

Materials Cage

An open platform on a vertical hoist,used for lifting materials to upper floors during construction of a building.

Materials Tower

Same as hoist tower. 

Materiato

A collective term for all timberwork employed in Classical Roman roof construction. 

Matheson Joint

In wrought iron pipe,a bell and spigot joint.

MATL

On drawings,abbr.for “material.”

Matrix

1.In mortar,the cement paste in which the fine aggregate particles are embedded.2.In concrete,the mortar in which the coarse aggregate particles are embedded.

Matroneum

In some religious settings which do not allow the sexes to mingle,a gallery set aside for women.

Matsu

A common Japanese pine;used in house construction.

Matte Dip

A liquid dip composed of two parts by volume of sulfuric acid to one part by volume of nitric acid and saturated with zinc oxide or sulfate;used to obtain a matte finish on metals.

Matte Varnish

See flat varnish.

Matte-surfaced Glass

Glass,one or both sides of which have been etched,ground,sandblasted,etc.,to provide diffusion of light.

Matte,mat,matt

A surface finish which is dull,with little or no gloss or sheen,and with low light reflectivity.

Mattock

A tool for loosening soil in digging;shaped like a pickax,but having one of its ends broad instead of pointed.

Mattress

A layer or slab of concrete,laid directly on the ground,which acts as a footing or the like.

Mature Tree

A tree having a trunk diameter greater than that specified in the applicable code.

Maturing

maturing The aging and/or proper hardening of a material,e.g.,mortar,plaster,concrete, etc.

Maturing Bin

See boiling tub.

Maturity

A measure of the developing of strength in concrete;combines the effects of curing temperature and time of hydration.

Maul, Mall

1.A heavy,wooden mallet.2.See beetle.
 

Maulstick

A mahlstick.

Mausoleum

1.A commemorative edifice for the reception of a monument;a cenotaph.2.A sepulchral chapel to contain tombs.

MAX

On drawings,abbr.for “maximum.”

Maximum Demand

1.The greatest load,3 delivered to an electric system over a definitely prescribed time interval.2.The greatest flow of water (or waste discharge) for all the fixtures in a plumbing system in a building during a definitely prescribed time interval.

Maximum Acceptable Pressure

In a water distribution system,the highest water pressure that will not result in the premature or accelerated damage of any component in the system.