Technical Specifications

RIVET CLINCHED NAILED
LAMINATED COLUMNS
WITH STEEL REINFORCED JOINTS
A STRONGER CHOICE
Midwest has incorporated laminated columns for certain building specications. Rivet clinched
laminated columns are an option to solid treated posts. Rivet clinched laminated columns provide
advantages over solid posts, when used as vertical supports.
STEEL PLATE REINFORCEMENT
The automated nailer machine accurately produces a superior laminated
column under a factory controlled condition. The treated (lower end) of the
column is also laminated in the factory and therefore no eld splicing is
necessary. Treated materials are laminated with stainless steel rivet clinched
nails. In addition to the advantage of factory lamination of the treated and
untreated components, heavy gauge steel plates are inserted between
the column members at the joints of treated and untreated
material. These plates greatly increase the strength of this
critical joint. Laminated columns 20' and under may
be constructed totally of treated lumber
without a joint.
STRONGER LAMINATION WITH RIVET CLINCHED NAILS
Midwest offers an improved laminated column to replace treated square posts as vertical
supports in building construction.
Midwest laminated columns are manufactured using an
automated nail machine which drives threaded nails, formed
from spiral shaped uted low carbon steel wire. The machine
automatically aligns the component members with its power-
ful clamping system, removing normal warpage and pressing
members rmly together while the threaded nails are driven.
The machine automatically countersinks and rivet clinches
the points. The threaded nail screws its way into material, as its head is formed. When the nail
is driven all the way through the column, the driving point is rivet clinched and a larger head is
formed on the other end of the nail. The rivet clinched threaded nails cannot back out.
The rivet clinched threaded nail length completely penetrates the 2X members.
Where thickness is equal to three standard dressed members, a single
threaded nail, rivet clinched has a joint separation resistance 4.45 times
greater than two 16 penny common nails. In three piece construction joints,
one rivet clinched threaded nail in double shear is equivalent of two,16-penny,
common nails, driven from each outside piece.
Rivet Clinched Threaded Nails
Are Accepted By:
FHA -Federal Housing Administration
ICBO -International Conference
of Building Ofcials
BOCA -Building Ofcials Conference
of America
CMHC -Central Mortgage & Housing
Corp. (Canada)
Approved by American Society of
Agricultural Engineers A.S.A.E.
Available at
www.midwestmanufacturing.com
903-0101
Laminated columns over 20' are
reinforced with 24" steel plates