Glossary from the MBMA 2006 Metal Building Systems Manual.

Used by permission.

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A B C D E F G H I J K L M N O P R S T U V W X Z

 

Lap Joint
A joint where one roof panel or = flashing=20 segment overlaps another.
Lean-To
A structure = having only=20 one slope and depending upon another structure for=20 partial
support.
Length
The dimension of the = building=20 measured perpendicular to the main framing from end
wall to end=20 wall.
Leveling Plate
A steel plate used on top of = a=20 foundation or other support on which a structural column
can=20 rest.
Lift (Crane)
Maximum safe vertical distance = through=20 which the hook, magnet, or bucket can move.
Lifting Devices=20 (Crane)
Buckets, magnets, grabs and other supplemental = devices, the=20 weight of which is to be
considered part of the rated load, used for = ease in=20 handling certain types of loads.
Liner Panel
A = metal=20 panel attached to the inside flange of the girts or inside of a wall=20 panel.
Live Load
See "Roof or Floor Live=20 Load".
Load Indicating Washers
A washer with = dimples=20 which flatten when the high strength bolt is tightened. The = bolt
tension can=20 then be determined by the use of feeler gages to determine the gap=20 between
the washer and the bolt = head.
Longitudinal
The=20 direction parallel to the ridge or sidewall.
Longitudinal=20 (Crane)
Direction parallel to the crane runway=20 beams.
Louver
An opening provided with fixed or = movable,=20 slanted fins to allow flow of air.
Low Rise = Building
A=20 description of a class of buildings usually less than 60' eave height. = Commonly,=20 they
are single story, but do not exceed 4=20 stories.
LRFD

Load and Resistance Factor = Design.