Modular buildings and modular homes are prefabricated houses or buildings that contain repeated sections called modules. "Modular" is a construction method that involves constructing sections from the construction site, then sending them to the planned website. Installation of these prefabricated sections is completed on site. Prefabricated sections are occasionally placed using a crane. The modules can be placed side-by-side, finishing, or stacked, allowing a variety of styles and configurations.
The buildings are 60 percent to 90% completed offsite at a factory-controlled surroundings, and transported and constructed in the last construction site. This can comprise the whole construction or be components or subassemblies of larger structures. In many cases, modular contractors operate with traditional general contractors to exploit the tools and advantages of each form of construction. Finished modules are transported to the construction site and constructed by a crane. Placement of the modules may take from a few hours to several days.
The full process of modular building places significance on the plan stage. This is really where practices like Design for Manufacture and Assembly (DfMA) have been used to ensure that assembly tolerances are regulated throughout fabrication and assembly on site. It's crucial that there's enough allowance in the layout to enable the assembly to take any"idle" or misalignment of elements. This is very unlike onsite construction in which the tradesman can often make the part to match any specific installation.
Building is offsite, using lean manufacturing methods to prefabricate solitary or multi-story structures in deliverable module sections. Permanent Modular Construction (PMC) buildings are manufactured in a controlled setting and may be constructed of timber, steel, or concrete. Modular components are typically constructed inside on assembly lines. Modules' construction may take as little as ten days but more often one to three weeks. PMC modules can be incorporated into site constructed jobs or stand alone and can be sent with MEP, fixtures and interior finishes.
Permanent modular buildings are designed to meet or surpass the same construction standards and codes as site-built structures and also the exact same architect-specified substances used in conventionally constructed buildings are employed in modular building jobs. PMC may have as many stories as construction codes allow. Unlike relocatable buildings, PMC structures are intended to stay in 1 location for the whole period of their useful life.
Modular buildings, also called prefabricated homes or precision built houses, are developed to equivalent or higher standards as onsite stick-built homes. The construction method is known as permanent modular construction.
Modular buildings might be used for long-term, temporary or permanent facilities, such as building camps, schools and classrooms, military and civilian housing, and industrial facilities. Modular buildings are used in rural and remote regions where conventional construction may not be possible or reasonable, by way of instance, the Halley VI lodging pods used for a BAS Antarctic expedition.  Other applications have included churches, healthcare centers, retail and sales offices, quick food restaurants and cruise boat building. They may also be used in areas that have weather issues, like hurricanes.
Material for stick built and modular homes are the same. Modular homes aren't doublewides or mobile homes. To begin with, modular houses don't have axles or a metal frame, meaning they are typically transported on flat-bed trucks. Modular buildings must conform to all relevant local building codes, whereas doublewides and mobile homes have metal under framing.