An assemblage of rafters and columns that support the secondary framing members and transfer loads directly to the foundation.
Main Wind Force Resisting System
A structural assembly which provides for the overall stability of the building and receives wind loads from more than one surface. Examples include shear walls, diaphragms, rigid frames, and space structures.
A party who designs and fabricates a Metal Building System.
An engineer employed by a manufacturer who is in responsible charge of the structural design of a Metal Building System fabricated by the manufacturer. The manufacturer’s engineer is typically not the Engineer of Record.
Anything constructed of materials such as bricks, concrete blocks, ceramic blocks, and concrete.
Mean Roof Height
Average height of roof above ground.
Metal Building System
A complete integrated set of mutually dependent components and assemblies that form a building including primary and secondary framing, covering and accessories, and are manufactured to permit inspection on site prior to assembly or erection.
An intermediate level between floor and ceiling occupying a partial area of the floor space.
Mill Duty Crane
Cranes with service classification E and F as defined by CMAA.
The tendency of a force to cause rotation about a point or axis.
A connection designed to transfer moment as well as axial and shear forces between connecting members.
Moment of Inertia
A physical property of a member, which helps define strength and deflection characteristics.
A method of placing concrete grade beam and floor slab together to form the building foundation without forming and placing each separately.
A crane that travels on a single runway beam, usually a “S” or “W” beam.
Buildings consisting of more than one gable across the width of the building.
Buildings consisting of more than one span across the width of the building. Multiple gable buildings and single gable buildings with interior columns are examples.
Multiple Girder Crane
A crane which has two or more girders for supporting the lifted load