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| Prefabricated Home |
Prefabricated Home Packages
By Diane Takahashi
This is by no means an exhaustive list of what's available in the area
of prefabricated homes and buildings. This article is to introduce you
to the world prefab. If you're in the industry, you'll probably be
cringing about now at the word "prefab". But, the word is one that has
become synonymous with homes and buildings that have been partially or
fully assembled in a factory setting. I for one am excited to see the
latest versions of modern prefabs emerging globally. They're well
thought out, beautiful, and energy-efficient.
And to anyone who has any doubts about the quality of today's prefab
homes, I'd ask, would you rather buy a house whose parts have all been
crafted outdoors exposed to the elements -- by hand. Or, would you
rather buy a house built in a factory setting to tight specs exceeding
that of site-built homes. I say exceeding, because a normal site-built
home doesn't have to endure the rigors of transportation.
For your review, here are quick descriptions of 10 of the many
categories of prefab homes available for exploring at
http://PrefabExpo.com - in no particular order:
1. Manufactured
Single-family residential dwellings consisting of one, two or more
sectional units and constructed to Federal HUD code. Zoning regulations
and ordinances of the local Municipality or County might not permit use
of mobile and manufactured homes in all areas of their jurisdiction.
2. Modular
Modular refers to a method of building a home, rather than a type of
home. A modular home can be built in a factory from a stock modular home
plan or from a customized plan, to the state, local or regional codes of
where the home will be set up. Modular homes have not typically
experienced the zoning restrictions and discriminative ordinances
applicable to manufactured and mobile homes.
3. Panelized
Panelized homes are factory-built homes in which panels — whole walls
with windows, doors, wiring, and outside siding — are transported to the
site and assembled. Panels are made from insulating foam sandwiched
between two layers of structural material. The panels are lightweight
and might already be filled with insulation when they arrive on the
site. The homes must meet the state or local building codes of where
they are sited.
4. Steel-frame
Steel framing is an equivalent to conventional stick frame or post &
beam home design where the structural lumber is replaced by steel studs
and trusses or steel posts and beams. Light-Gauge Framing System
features screw-together, galvanized stud-and-truss, grid-type
construction system built on 4-foot center.Red-Iron Metal Post & Beam
Systems features bolt-together, pre-engineered post-and-beam-type
framing system that uses the red-iron steel "C" beams on 8-foot center.
The prefabricated home built with this method can be single-story,
two-story, and even tri-level home. Unlike conventional wood framed home
that requires interior walls to support the roof, the higher
strength-to-weight ratio of steel house allows to span greater distances
with less material and fewer supports. The result is higher floor layout
and interior design flexibility.
Unlike wood, steel won't shrink, rot, warp, buckle, split, or be
attacked by insects. This results in greater durability, lower long-term
maintenance, higher energy efficiency and overall greater quality of
this prefabricated home.
5. Precut
This category includes wood-framed factory-built houses or cabins where
building materials are factory-cut to design specifications and
transported to the site to be assembled. PrefabExpo.com presents prefab
building kits designed as wood-framed (also known as balloon-frame, 2 x
4, 2 x 6 or stick-built construction) as well as prefabricated home kit
/ cabin kit using post-frame method. The homes or cabins must meet local
or state building codes of the area where they will be sited.
6. Cedar
According to Katahdin Cedar Log Homes, cedar is aromatic to people, and
problematic to insects: The heartwood of northern white cedar produces
organic compounds called thujaplicins – which create that fresh,
pleasant cedar aroma. But to insect pests, such as moths and termites,
cedar just plain stinks. They’ll avoid cedar homes and instead search
out inviting, tasty pine structures.
Cedar home kits include everything you need to build the home, itself.
That is to say, the walls, the floor, the ceiling, the windows and
doors. But your foundation, plumbing and electrical system are not
usually included in a kit.
7. Timberframe
Timber framing is a specific type of post and beam construction in which
a frame is created from solid wood timbers that are then connected by
any one of the following wooden joints: mortise and tenon, dovetails, or
scarfs secured with hardwood pegs. The frame is covered with any one of
a number of enclosure systems. Normally the timbers remain exposed to
the interior of the building.
Timber frame structures exhibit a strength and aesthetic quality not
found in conventionally framed houses. The timbers are pre-cut, shaped,
and finished at the factory, then sent to the construction site, where
they can be quickly assembled by a crew, routinely using cranes to lift
the bents and beams into place. The use of quality wood, enhanced by
joinery that compares with fine cabinet making, maximizes the strength
of the timberframe structure. Joinery is the heart of the entire
structure.
8. Log
Log homes provide their owners with a comforting and relaxing sense of
informality and simplicity. The mass of logs produces heating and
cooling benefits, and reduces noise transmission into and throughout the
home. These are very attractive characteristics, but there are also
challenges in construction and limitations in decorating. These aspects
require special design considerations and have unusual maintenance
requirements. Basic Kits Are...
WALLS ONLY: The walls-only log home package includes all the logs for
the outside walls, including fasteners. Roof beams and staircases may be
added.
STRUCTURAL SHELL: Shell This package includes everything that's in the
walls-only package, plus all components necessary to keep the weather
out, such as exterior doors, windows, and the roofing system.
THE COMPLETE PACKAGE: Complete packages also includes interior
components required to finish log homes. Such items include interior
walls, stairs, closets, interior doors and trim.
9. Circular
The circle is the strongest geometrical shape we recognize, and this
factor likely influenced builders of circular homes for thousands of
years. Prefabricated circular buildings have been built as cabins,
studios, homes, offices or community halls and convention centers. Most
of today's prefabricated circular homes and cabins offered across the
country use conventional wood-frame or post & beam construction method.
These homes and cabins are ideally suited to take the full advantage of
locations offering exciting panoramic views, and to incorporate factor
of the surroundings into the home design.
10. Dome
Geodesic Dome is using triangular networks forming hexagons and
pentagons and creating a free-span, spacious environment of spherically
shaped structure requiring no internal supports. This results in large
flexibility for utilizing interior space to implement floor designs not
limited by structural restrictions. Because of the structural strength
of the shape, the domes have a far better record of withstanding
tornados, hurricanes and earthquakes than cube-shaped structures of
conventional homes. Advantages...
MATERIAL COSTS: Geodesic domes provide the greatest amount of floor area
with the least amount of surface area, reducing the quantity of needed
building material by as much as 30-50%.
ENERGY EFFICIENCY: As a result of the shape, the dome has approximately
30-50% less roof and wall area than cube-shaped home of equal floor
space. This results in lesser area being exposed to the elements,
resulting in reduction in heating and cooling costs of dome shaped
structures. Also, the spherical shape of the dome facilitates natural
air flow yielding more even temperatures maximizing overall interior
temperature comfort.
Disadvantages...
As a result of complicated angles, the interior and exterior finishing
of the dome (after speedy assembly of the prefabricated shell) is
significantly more labor intensive than finishing the conventional
house. Also, the finishing work requires highly skilled or specialized
tradesmen which might not be available at every location. These factors
might present welcoming challenge for skilled handyman - homebuilder,
but would create substantial cost outlay if the hired labor is
considered.
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