Professor Townsend From Cottage to High-rise: Prefabricated Building Components


Figure 3: Modular construction schedule vs. site build construction schedule



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Figure 3: Modular construction schedule vs. site build construction schedule

construction project. With the modular construction schedule, construction on components of the building can begin offsite while the site is prepared and foundations are poured. Being able to start building construction while building components are assembles off site, allows the schedule to be shortened as special pieces of a project are completed in a factory setting.


Where are these methods being used?

Though it is possible to create fully prefabricated modular building units, it is more common to see manufactured build components. General contractors such as Skanska and Hathaway Dinwiddie, are taking advantage of the ability to prefabricate complicated bathroom and MEP racks (Figure 4) to shorten their schedule and productivity.




Figure 4: Factory Assembly of Prefabricated MEP Racks [3]
Many mixed-use, healthcare, hospital and hospitality projects are often made up of many identical units. Because of this, some of the projects that fall into this category are using fully prefabricated bathroom units. These bathrooms, like all prefabricated components are created in a factory and shipped to the building site. In this type of setting, sheetrock walls and other components can be created with machines, ensuring greater precision in the building process and a reduction in human error. Bathroom pods are completely built, furnished, inspected, and delivered to the project site. Onsite, they are moved into position and tied into the building’s utilities [5].



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