24-06-2014, 02:04 PM
PREFABRICATED STRUCTURES
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ABSTRACT
A prefabricated structure or building is a structure that has several factory built components that are assembled on a site. These pre-made components can consist of panels, modules or transportable sections.
Constructing manufactured homes typically involves connecting plumbing and electrical lines across the sections, and sealing the sections together.
Manufactured homes can be built onto a permanent foundation, and if designed correctly, can be difficult to distinguish from a stick-built home to the untrained eye.
The entire fabrication works are done using contemporary architectural principles.0these structures are more advantageous than conventional one’s.
In this paper, we discussed about the concept, application areas, advantages, and disadvantages of the modular houses.
INTRODUCTION:
A prefabricated structure or building is a structure that has several factory built components that are assembled on a site. These pre-made components can consist of panels, modules or transportable sections.
Concept of prefabricated buildings:
"Prefabricated" may refer to buildings built in components (e.g. panels), modules (modular homes) or transportable sections (manufactured homes), and may also be used to refer as mobile homes, i.e., houses on wheels. Although similar, the methods and design of the three vary wildly. There are two-level home plans, as well as custom home plans. There are considerable differences in the construction typesModular homes are created in sections, and then transported to the home site for construction and installation. These are typically installed and treated like a regular house, for financing, appraisal and construction purposes, and are usually the most expensive of the three. Although the sections of the house are prefabricated, the sections, or modules, are put together at the construction much like a typical home. Manufactured and mobile houses are rated as personal property and depreciate over time.
The modular houses are constructed in accordance with the IBC (International Building Code).
Constructing manufactured homes typically involves connecting plumbing and electrical lines across the sections, and sealing the sections. Manufactured homes can be built onto a permanent foundation, and if designed correctly, can be difficult to distinguish from a stick-built home to the untrained eye.
Manufactured homes are typically purchased from a retail sales company, initially assembled by a local contracting company, and follow-up repairs performed by the manufactured home company under warranty.
A manufactured home, once assembled, goes through a "settling-in" period, where the home will settle into its location. During this period, some drywall cracking may appear, and any incorrectly installed appliances, wiring, or plumbing should be repaired, hopefully under warranty. If not covered under warranty, the costs will be borne by the consumer. For this reason, it is important that the consumer ensure that a reputable and honest contractor is used for the initial set-up. If any repairs are not completed by the initial set-up crew, the manufacturer will send repair crews to repair anything covered by the warranty. The secondary repair team must be scheduled, and may not be available immediately for most repairs. Just because a manufactured home has been assembled does not mean it is immediately inhabitable; appropriate ventilation, heating, plumbing, and electrical systems must be installed by a set-up crew, otherwise, the buyer must wait for the manufacturer repair team or do it themselves.
ERECTION OF COMPONENTS
The Standard Prefabricated Building System consists of a Welded Tubular and Structural Steel Frame with a Panelised Wall and Roof System. The Floor is Structural Grade Plywood with Vinyl Composition Tile. A complete Electrical system is provided and includes Lights, Duplex Outlets, Switches, Sub Panel, Breakers, Conduits and Wiring. HVAC package is mounted in a Pre-framed Panel and supplies Cooling, Heating and Fresh Air.
All building components are prefabricated and completely modular in design. Prefabricated Buildings can be designed for Interior or Exterior use.
DISADVANTAGES:
Prefabricated houses are not necessarily 'better' for the environment than conventional houses. In fact, both prefabricated houses and conventional houses are bad for the environment. This is mostly because of the building materials and energy inputs they demand.
Most prefab and most conventional homes do not use renewable building materials, and instead use materials that involve a great deal of energy to create. Brick, concrete, steel - all of these are high-energy materials that typically must be shipped long distances.
Wood is certainly renewable, but in a world of wood homes there would be few trees left. Wood takes many years for trees to reproduce; and the amount of logging that happens in the name of woody construction materials is tragic.
Though it isn't allowed everywhere due to strict, poorly written building codes - straw bale housing and recycled-materials housing are by far the green structures exemplar.
CONCLUSION:
Due to the flexibility of the structure in expandability and appearance this prefab houses are the best choice. From the several advantages like reusability, high scrap value, durability, less construction time makes this user friendly. Also, they can be installed in passive weather conditions also