|
History of Stud
Framing
Today, the prevalent method of home
building in the United States is stud framing,
alternatively known as balloon framing. This was not
always the case, however, and the history of how this came
to be is both an interesting and insightful tale. The
building of homes with 2 x 4 or 2 x 6 studded walls and
roof rafters, all 16 inches on center, is an American
innovation of considerable import.
The story began in Chicago, Illinois in
the year 1833. At that time, the U.S. Calvary maintained
their foothold in the region through their presence at
Fort Dearborn, located on the banks of the Chicago River
just west of Lake Michigan. The civilian population at the
time was a mere 150 people; though small, the settlement
clearly had potential, as it possessed access to the
eastern seaboard via the Great Lakes, a deep harbor and
proximity to a number of natural resources, including vast
strands of virgin timber and the booming lead mines of
northern Illinois and southern Wisconsin, all of which
augured well for future growth. The prospects for
Chicago’s growth were reflected in land prices. For
example, a man named George Hubbard purchased a riverfront
parcel in 1831 for the not insignificant sum of $1500 and
sold it in 1836 for $80,000!
But in 1833 the settlement consisted of
nothing more than log huts and stick shanties. There were
three post and beam timber framed buildings in town: one
community hall and two stores. In older communities of the
eastern and southern U.S., most buildings were built with
post and beam timber framed construction, a long and
laborious building process. A team of 10 to 12 experienced
joiners and carpenters, equipped with augers, chisels
planes and saws, could erect a post and beam home in two
seasons. First milled wood was cured one to two years,
allowing the timbers to dry and wind (the tendency for
wood to twist once it has been squared); only then could
construction begin, utilizing pegs and mortise and tenons
to join the various structural elements together. With a
shortage of both existing housing stock and experienced
craftsmen and a population that was doubling annually,
seasoning lumber for a year prior to beginning
construction was not a practical solution to Chicago’s
building needs.
Necessity being the mother of
invention, a Chicagoan devised an alternative method of
building that took advantage of improvements in the
affordability of milled lumber and the advent of readily
available and inexpensive nails. The new building system
processed two important advantages relative to timber
framing. First, a structure could be built in far less
time and required less skilled manpower. Heavy timbers no
longer needed to be cured, transported and manipulated and
a home could be build by a small group of handy
individuals. Second, the new method did not require a
master carpenter or joiner. Lighter architectural members
coupled with readily available and affordable nails
enabled builders to eliminate the use of pegs, mortise and
tenon.
The new technology was stud framing,
which utilized 2 inch wide dimensional lumber of varying
depths that were nailed together to form a skeletal wall
and roof structure. The stud framed building envelope was
typically sheathed with clapboard or planks and finished
on the interior with plaster applied to rough cut wood
lath. Sixteen inch on center became the customary stud
spacing because wood lath, already in common use at the
time, was cut to a standardized length of forty-eight
inches; forty-eight divided by three equals sixteen.
Augustine Taylor, a master carpenter,
arrived in Chicago in June of 1833 and shortly thereafter
was hired to build St. Mary’s Catholic Church on a budget
of $400, a sum insufficient for the 24 by 36 foot
structure to be timber framed in the traditional manner.
Letters from parishioners describe the church as being
built from “scantling and sidling”; a “frame” is mentioned
which was later “enclosed”; another letter states that the
church was “going up rapidly”. More telling, yet another
missive states that “the ancient builders prophesied its
destruction in the first gale, but it withstood the winds
and proved the theory of the master workman correct”.
Finally, historical records show that the church was moved
three times in ten years as the fledging city grew, an
easy task for a stud framed building of that size but a
highly impractical feat for a timber framed structure.
While some historians credit George W. Snow as the
inventor of stud framing, construction of the building on
which his claim to authorship lies commenced after work
began on Taylor’s Church. While it is entirely plausible
that in a settlement of the size of Chicago the two men
were acquaintances and perhaps shared ideas regarding a
novel approach to building, the surviving evidence
suggests that St. Mary’s Church, under Taylor’s direction,
was the first recorded structure built with stud framing.
Early detractors of the method claimed
it was no stronger than a balloon of hot air held
tenuously in place by a webbing of ropes, and that like
the balloon, would blow away at the first sign of wind. In
short order the new building technique became known as
balloon framing. While the dismissive name stuck, the
criticism did not dampen the spread of the technology’s
use and popularity. The mid-eighteen hundreds in the
United States were characterized by a rapid push westward
and a chronic shortage of skilled labor. Additionally, a
stud framed building required less lumber and the building
materials were easier to transport; as a consequence, the
advantages of stud framing led to the rapid spread of this
methodology and contributed significantly to the swift
settlement of the lands west of the Mississippi.
Stud framing, while still widely
practiced today, is a building technique that is now
characterized by a number of important drawbacks that did
not exist when the system was initially devised. First,
dimensional lumber in today’s market is vastly inferior to
the lumber milled from the seemingly endless old growth
forests prevalent during the eighteen-hundreds. Today,
lumber companies farm trees that are harvested 6 to 10
years after planting. The tree rings of these fast growing
trees are widely spaced and lack the strength of the
lumber milled from massive, old growth trees, which are
characterized by tighter spacing and reduced curvature of
the hard tree rings. Building codes were based upon the
old, stronger lumber have never been revised to account
for the diminished strength of the lumber available today.
Second, the widely spaced tree rings of
today’s farmed trees are sharply curved due to the small
diameter of the harvested trees. The lumber derived from
these trees cannot be dried as easily without warping to
an unacceptable degree, and after partial drying, readily
re-absorb water because of the greater mass of the softer,
more absorbent membrane in the wider spaces between the
relatively harder, less absorbent ring membrane. As the
wetter studs dry within the walls of a building, they tend
to twist and warp, damaging walls, popping nails and
generally compromising the structural integrity of the
building. Third, the increased propensity of the lumber to
absorb water renders today’s lumber more susceptible to
the occurrence of mold problems.
Innovation in the workplace is a long
standing American tradition, and Taylor and/or Snow’s
invention of stud framing should rightly be numbered among
the most significant technical advances in our country’s
history. However, just as circumstances conspired to
supplant post and beam construction with stud framing a
century and a half ago, structured insulated panels are
rapidly gaining acceptance today due to the many important
advantages they offer in the building process. Superior
structural characteristics, uniformity and durability of
the finished surfaces, environmental sustainability and
significant improvements in thermal performance are among
the factors prompting the continuing evolution of the
building process.
Adapted and published with permission
by RABS from “An American Revolution” written by Warren
Ashworth, Architect, for Early American Life. |