Metal building terms and definitions – Mueller Pre-Fab User Manual
Page 107
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H-5
MeTal bUIlDInG TeRMs anD DefInITIons
Hot-Rolled shapes:
Steel sections (angles,
channels, H-beams, etc .) which are formed by rolling
mills while the steel is in a semi-molten state .
Icbo:
International Conference of Building Officials .
Impact load:
An assumed dynamic load resulting
from the motion of machinery, elevators, craneways,
vehicles, and other similar moving forces .
Impact Wrench:
An electric or pneumatic device
used to tighten nuts on bolts .
Insulation:
Any material used in building
construction to reduce heat transfer .
Internal Pressure:
Pressure inside a building
that is a function of wind velocity, and number and
location of openings .
Jack beam:
A beam used to support another
beam or truss and eliminate a column support .
Jack Truss:
A truss used to support another truss
or beam and eliminate a column support .
Jib crane:
A cantilevered boom or horizontal beam
with hoist and trolley . This lifting machine may pick
up loads in all or part of a circle around the column
to which it is attached .
Jig:
A device used to hold pieces of material in a
certain position during fabrication .
Kick-out (elbow):
(Turn-out) a lower downspouts
section used to direct water away from a wall .
Kip:
Unit of measure equal to 1,000 pounds (4 .4 KN) .
Knee:
The connecting area of a column and rafter
of a structural frame such as a rigid frame .
Knee brace:
A diagonal brace designed to
resist horizontal loads usually from wind or moving
equipment . This member normally has the lower
end connected to a column and the upper end
connected to an eave strut .
lean-to:
A structure such as a shed, having only
one slope or pitch and depending upon another
structure for partial support .
leveling Plate:
A steel plate used on top of a
foundation or other support on which a structural
column can rest .
liner Panel:
A panel applied as an interior finish .
live load:
Live load means all loads, including
snow, exerted on a roof except dead, wind and
lateral loads .
load Indicator Washer:
A washer for high-
strength bolts in which pre-tension load can be
measured as a function of amount of compression
on raised portions of the washer .
loads:
Anything that causes a force to be exerted
on a structural member . Some different examples are:
A . Dead Load
B . Impact Load
C . Roof Live Load
D . Seismic Load
E . Wind Load
F . Crane Load
G . Collateral Load
H . Auxiliary Load
louver:
An opening provided with fixed or
movable, slanted fins to allow the flow of air .
Main frame:
An assemblage of rafters and
columns that support the secondary framing
members and transfer loads directly to
the foundation .
Manufacturer:
A party who designs and
fabricates a Metal Building System .
Manufacturer’s engineer:
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 .
Masonry:
Anything constructed of materials
such as bricks, concrete blocks, ceramic blocks
and concrete .
MbMa:
Metal Building Manufacturers Association .
Metal building fiber Glass Insulation:
A
grade of fiberglass insulation blanket specifically
manufactured for lamination to a vapor retarder .