Metal Building Glossary - "C"

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Building Terms:

C Section ("C" Section)
A component in the shape of a block "C" formed from steel sheet material, that may be used either singularly or in back to back applications.

Cab-Operated Crane
Crane controlled by an operator in a cab supported on the bridge or trolley.

The curvature of flexural member in the plane of its web before loading.

A projecting roof system or element that is supported and restrained at only one end.

Cantilever Beam
A beam that is supported at only one end having a free end and fixed end.

Cap Plate
A plate located at the top of a column or end of a beam for capping the exposed end of the member.

The maximum load (usually stated in tons), which a crane is designed to support.

Capillary Action
An action that causes movement of liquids when in contact with two adjacent surfaces such as panel sidelaps.

Cast in Place Base
A continuous member imbedded in the edge of the building foundation to which the building wall panels are attached.

To seal and make weather-tight the joints, seams, or voids by filling with a waterproofing compound or material.

Caulking (Caulk)
Material used to seal and make weather-tight joints, seams, or voids.

When the paint finish on panels has a white powder film due to over exposure.

Channel, Hot Rolled
A "C" shaped member formed while in a semi-molten state at the steel mill to shape having standard dimensions and properties.

The exterior metal roof and wall paneling of a Metal Building System.

Clear Span
The horizontal distance of a clear and unobstructed length between supporting columns.

Clear Span Building
A building with vertical columns on the outer edges of the structure not requiring internal supporting columns and so providing a large open interior floor space.

A plate or angle used to fasten two or more members together.

Closure Strip
A strip, formed to the contour of ribbed panels and used to close openings created by ribbed panels joining other components, either made of resilient material or metal.

CMU (Concrete Masonry Unit)
Generally, used to construct masonry walls.

Cold Forming
The process of using press brakes or rolling mills to shape steel into desired cross sections at room temperature.

Collateral Loads
The weight of additional permanent materials required by the contract, other than the Building System, such as sprinklers, mechanical and electrical systems, partitions and ceilings.

A primary member used in a vertical position in a building to transfer loads from the main roof, beams, trusses, or rafters to the foundation.

A part used in a Metal Building System.

Components and Cladding
Members that include girts, purlins, studs, wall and roof panels, fasteners, end wall columns and end wall rafters or bearing end frames, roof overhang beams, canopy beams, and masonry walls when acting as other than shear walls.

Compression Force
A force acting on a body tending to compress the body, (pushing action)

Concealed Clip
A hold down clip used with a building wall or roof panel system to connect the panel to the supporting structure without exposing the fasteners to the exterior surface.

Concrete Masonry Unit (CMU)
Generally, used to construct masonry walls.

The means of attachment of one structural member to another.

The terminology given to a structural system denoting the transfer of loads and stresses from member to member as if there were no connections.

Continuous Beam
A beam having three or more supports.

A general contractor or sub-contractor with responsibility for providing the erection of the metal building system.

Cool Roof
A cool roof reflects and emits the sun's heat back to the sky instead of transferring it to the building below. "Coolness" is measured by two properties, solar reflectance and thermal emittance. Both properties are measured from 0 to 1 and the higher the value, the "cooler" the roof. (

The exterior metal roof and wall paneling of a Metal Building System.

A machine designed to move material by means of a hoist.

Crane Aisle
The portion of a building aisle in which a crane operates, defined by the crane span and the uninterrupted length of crane runaway.

Crane Girder
The primary horizontal beams of the crane bridge that supports the trolley.

Crane Rail
A track supporting and guiding the wheels of a bridge crane or trolley system. On under hung cranes, the crane rail also acts as the runway beam.

Crane Runway Beam
The member that supports a crane rail and is supported by columns or rafters depending on the type of crane system. On under hung bridge cranes, the runway beam also acts as the crane rail.

Crane Span
The horizontal distance center to center of runway beams.

Crane Stop
A device to limit travel of a trolley or crane bridge. This device normally is attached to a fixed structure and normally does not have energy-absorbing ability.

Crane Support Column
A separate column, which supports the runway beam of a top running crane.

A raised edge on a concrete floor slab or roof accessory.

Curtain Wall
Perimeter wall panels of a building which carry only their own weight and wind load.

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