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Summary: Building dictionary to explain building jargon and terminology from A - Z.
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Building dictionary for the letter M - Page 11
Modulus of resilience
The measure of the elastic energy absorbed by a unit volume of a material when it has reached its elastic limit in tension.
Modulus of rupture
The measure of a beam's maximum load-carrying capacity. The ratio of the rupture's bending moment to the beam's section modulus.
Modulus of compression
The measure of a material's resistance to inward pressure.
Modulus of rigidity
The measure of a material's resistance to shear. The ratio of unit shearing stress to unit shearing strain.
Modulus of toughness
The measure of energy per unit volume that is absorbed by a material when subject to impact, up to the point of fracture.
Modulus of volume
See bulk modulus of elasticity
Moist room
An enclosure maintained at a given temperature and relative humidity and used for curing test cylinders of concrete or mortar.
Moisture barrier
A dampproof course or vapor barrier, but not necessarily waterproof. See also vapor barrier.
Moisture content
The weight of water in materials such as wood, soil, masonry units, or roofing materials, expressed as a percentage of the total dry weight.
Moisture proofing
The application of a vapor barrier.
Moisture-resistant board
Gypsum board designed to be used in areas that are often damp, such as in bathrooms for tile backing.
Moment
An applied load or force which creates bending in a structural member. It is numerically expressed as the product of the force times the length of the lever arm, and given in units such as foot-pounds.
Moment connection
A rigid connection between structural members which transfers moment from one member to the other, and thus resists the moment force. A pinned connection cannot resist moment forces, only shear forces.
Moment of inertia
In a structural member, the product of each element of mass times the square of the distance from an axis.
Momentum
The mass times the velocity of a moving object.
Monitor
(1) A raised section of a roof, often along the ridge of a gable roof, with louvers or windows in the side for ventilation or light. (2) In closed-circuit television, a video display device used to check the quality of a picture or image transmitted by a camera.
Monolithic concrete
Concrete that has been cast continuously with no joints other than construction joints.
Monolithic construction
The pouring of concrete grade beam and floor slab together to form a building foundation.
Mortar
(1) A plastic mixture used in masonry construction that can be troweled and hardens in place. The most common materials that mortar may contain are Portland, hydraulic, or mortar cement, lime, fine aggregate, and water. (2) The mixture of cement paste and fine aggregate which fills the voids between the coarse aggregate in fresh concrete.
Mortar bed
A layer of fresh mortar into which a structural member or flooring is set.
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