Mueller Pre-Fab - Manual (Page 105)

www.muellerinc.com H-3
MeTal bUIlDInG TeRMs anD DefInITIons
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, a runway beam also acts
as a crane rail .
curb: A raised edge on a concrete floor slab
or skylight .
curtain Wall: Perimeter wall panels that carry only
their own weight and wind load .
Damper: A baffle used to open or close the throats
of ventilators .
Dead load: The dead load of a building is the
weight of all permanent construction, such as floor,
roof, framing, and covering members .
Deflection: The displacement of a structural
member or system under load .
Design loads: Those loads specified in building
codes published by Federal, State, County, or City
agencies, or in owners’ specifications to be used in
the design of a building .
Diagonal bracing: See “Brace Rods”.
Diaphragm action: The resistance to racking
generally offered by the covering system, fasteners
and secondary framing .
Door Guide: An angle or channel guide used
to stabilize or keep plumb a sliding or rolling door
during its operation .
Downspout: A conduit used to carry water from
the gutter of a building to the ground or storm drain .
Drift Pin: A tapered pin used during erection
to align holes in steel members to be connected
by bolting .
eave: The line along the sidewall formed by the
intersection of the planes of the roof and wall .
eave Height: The vertical dimension from finished
floor to the eave .
eave strut: A structural member at the eave to
support roof panels and wall panels . It may also
transmit wind forced from roof bracing to wall bracing .
elastic Design: A design concept utilizing the
proportional behavior of materials when all stresses
are limited to specified allowable values .
end frame: A frame at the endwall of a building to
support the roof load from one half the end bay .
erection: The on-site assembling of fabricated
components to form a complete structure .
erection Drawings: See “Framing Drawings”.
expansion Joint: A break or space in
construction to allow for thermal expansion and
contraction of the materials used in the structure .
fabrication: The manufacturing process
performed in a plant to convert raw material into
finished metal building components . The main
operations are cold forming, cutting, punching,
welding, cleaning and painting .
fascia: A decorative trim or panel projecting from
the face of a wall .
fenestration: Windows or other panels of glass;
their numbers and location .
field: The “job site”, “building site”, or general
market area .
filler strip: See “Closure Strip”.
finial: Gable closure at ridge .
fixed base: A column base that is designed
to resist rotation as well as horizontal or
vertical movement .
flange: The projecting edge of a structural member .
flange brace: A bracing member used to
provide lateral support to the flange of a beam,
girder or column .
flashing: A sheet metal closure which functions
primarily to provide weathertightness in a structure
and secondarily, to enhance appearance .
footing: A pad or mat, usually of concrete, located
under a column, wall, or other structural member,
that is used to distribute the loads from that member
into the supporting soil .