Abstract
Modern Methods of Construction with Offsite Manufacturing is an advancement from prefabricated technologies that existed for decades in the construction industry, and is a platform to integrate various disciplines into providing a more holistic solution. Due to the rapid speed of construction, reduced requirement of labour and minimised work on site, offsite manufacturing and prefabricated building systems are becoming more popular, and perhaps a necessity for the future of the global construction industry. The approach to the design and construction of prefab building systems demands a thorough understanding of their unique characteristics.
Highlights
A prefabricated building, by definition, is where an entire building or an assembly of its components is manufactured at an offsite facility and assembled onsite from self-sustained volumetric modules or separate panels
Modern Methods of Construction (MMC) with Offsite Manufacturing (OSM) have arisen to integrate these various technologies into a more holistic and systematic solution, and most modern prefab manufacturers will cater for various architectural designs with prefab units of creative geometries and innovative connection systems
The design process of a prefab building takes a somewhat different and an arguably improved approach (Figure 3). This is mainly due to the necessity of completing the project in a much shorter time and because the structural design takes place centred around the particular prefab builder, while the specific design task may be subcontracted to an outside structural engineering firm
Summary
A prefabricated (prefab) building, by definition, is where an entire building or an assembly of its components is manufactured at an offsite facility and assembled onsite from self-sustained volumetric modules or separate panels. Modular (volumetric) construction: manufacturing of fully self-contained units in an offsite facility to be transported to site to be assembled to form a complete structure. Most multi-storey modular buildings found around the world are assemblies of corner-supported modules that are laterally connected to a cast in situ concrete core This in situ core effectively acts as the primary lateral load resisting element and, in many of these, the floors are poured with concrete after installing the modules. The design process of a prefab building takes a somewhat different and an arguably improved approach (Figure 3) This is mainly due to the necessity of completing the project in a much shorter time and because the structural design takes place centred around the particular prefab builder, while the specific design task may be subcontracted to an outside structural engineering firm. Type B—Projects that were initially conceptualised to be built with traditional construction methods (in situ) but are subsequently required to be built using prefab methods
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