Modular buildings and modular homes are prefabricated buildings or houses which consist of repeated sections called modules. "Modular" is a building method that involves assembling sections away from the building site, then delivering them to the intended website. Installation of these prefabricated sections is finished on site. Prefabricated sections are sometimes placed utilizing a crane. The modules can be set side-by-side, end-to-end, or piled, allowing an assortment of configurations and styles.
Construction is offsite, with lean production techniques to prefabricate single or multi-story structures in deliverable module sections. Modular components are typically constructed inside on assembly lines. Modules' structure may take as few as ten days but more often one to three months.
The buildings are 60% to 90% completed offsite at a factory-controlled environment, and transported and constructed in the final construction site. This can include the entire building or be components or subassemblies of bigger structures. In many cases, modular contractors operate with conventional general contractors to exploit the resources and benefits of each form of construction. Completed modules are hauled to the construction site and constructed by means of a crane. Placement of the modules may take from a few hours to several days.
Substance for pole built and modular houses will be the same. First, modular houses don't have axles or a metallic framework, meaning that they are generally transported on flat-bed trucks. Modular buildings must conform to all relevant regional building codes, while doublewides and mobile homes have metal beneath framing. Doublewides and mobile houses made in the United States are required to conform to federal codes regulated by U.S. Department of Housing and Urban Development.
Permanent modular structures are designed to meet or exceed the same construction codes and standards as site-built structures and also the exact same architect-specified substances used in conventionally constructed buildings are traditionally used in modular building projects. PMC may have as many stories as construction codes allow. Unlike relocatable buildings, PMC structures are intended to stay in 1 location for the duration of their useful life.
Modular buildings may be used for long-term, temporary or permanent facilities, such as building camps, schools and classrooms, civilian and military home, and industrial facilities. Modular buildings are used in rural and remote areas where conventional construction may not be possible or reasonable, by way of example, the Halley VI lodging pods employed for a BAS Antarctic expedition.  Other uses have included churches, healthcare facilities, sales and retail offices, quick food restaurants and cruise boat construction. They may also be used in regions that have weather concerns, like hurricanes.
The entire process of modular building places significance on the design stage. This is where practices like Design for Manufacture and Assembly (DfMA) have been used to ensure that assembly tolerances are controlled throughout manufacture and assembly on site. It is vital that there's enough allowance in the layout to enable the meeting to take up any"slack" or misalignment of components. The usage of advanced CAD systems, 3D printing and production management systems are important for modular structure to be successful. This is quite unlike on-site construction where the tradesman can often make the part to suit any particular installation.
Modular buildings, also referred to as prefabricated houses or precision built homes, are built to equivalent or higher standards as on-site stick-built homes. The construction way is referred to as permanent modular construction.