Metal building terms and definitions – Mueller Pre-Fab User Manual
Page 109
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H-7
MeTal bUIlDInG TeRMs anD DefInITIons
Rigid frame:
A structural frame consisting of
members joined together with moment connections
so as to render the frame stable with respect to the
design loads, without the need for bracing in its plane .
Rolling Doors:
Doors that are supported at the
bottom on wheels that run on a track .
Roll-up Door:
Door that opens by traveling vertically .
Roof covering:
The exposed exterior roof surface
consisting of panels .
Roof live load:
Loads that are produced (1)
during maintenance by workers, equipment, and
materials, and (2) during the life of the structure by
movable objects and do not include wind, snow,
seismic or dead loads .
Roof overhang:
A roof extension beyond the
endwall or sidewall of a building .
Roof slope:
The tangent of the angle that a roof
surface makes with the horizontal, usually expressed
in units of vertical rise to 12 units of horizontal run .
Roof snow load:
That load induced by the
weight of snow on the roof of the structure . Usually
obtained by taking a fraction of the “Ground
Snow Load” .
Ropeseal:
See “Sealant”.
Runway beam:
See “Crane Runway Beam”.
Runway bracket:
A bracket attached to the
column of a building frame, which supports the
runway beam for top-running cranes .
sag Member:
A tension member such as rods,
straps or angles used to limit the deflection of a girt
or purlin in the direction of its weak axis .
screwed Down Roof system:
See “Through-
fastened Roof System”.
sealant:
Any material that is used to seal cracks,
joints or laps .
sealant Tape:
Caulking or sealant normally used
in sealing roof panel laps .
secondary framing:
Members that carry loads
from the building surface to the main framing . For
example – purlins and girts .
sectional overhead Doors:
Doors constructed
in horizontally hinged sections . They are equipped
with springs, tracks, counter balancers, and other
hardware that roll the sections into an overhead
position, clear of the opening .
seismic load:
The lateral load acting in any
horizontal direction on a structural system due to the
action of an earthquake .
self-Drilling screw:
A fastener that combines the
functions of drilling and tapping .
self-Tapping screw:
A fastener that taps its own
threads in a predrilled hole .
shipping list:
See “Bill of Materials”.
shop Primer Paint:
The initial coat of primer
paint applied in the shop .
side lap fastener:
A fastener used to connect
panels together at their side lap .
sidewall:
An exterior wall that is perpendicular to
the frames of a building system .
sidewall overhang:
See “Roof Overhang”.
sill:
The bottom horizontal framing member of a wall
opening such as a window or door .
simple connection:
See “Pin Connection”.
simple span:
A term used in structural design
to describe a beam support condition at two
points which offers no resistance to rotation at
the supports .
single slope:
A sloping roof in one plane . The
slope is from one wall to the opposite wall .
single span:
A building or structural member
without intermediate support .
skylight:
A roof accessory to admit light, normally
mounted on a curbed framed opening .