Offsite Construction and Precast
Offsite construction has become popular within the construction industry because of the numerous benefits it can bring to a project. One of the best offsite produced materials that can be utilized is precast concrete which adds value, style, and durability to projects.
What is Offsite Construction?
Offsite construction is defined as any part of the building process that is completed away from the job site and includes both prefabrication and modular construction. Precast is designed and poured in precast plants where the components are overseen by precast manufacturers who adhere to strict quality review processes to ensure quality projects are created prior to arrival at the job site. Mistakes and/or issues are sorted out well before the precast reaches the job site, reducing time spent on site fixing issues and therefore improving construction schedules.
The Benefits of Offsite Construction
Offsite construction is a popular option in cities due to reduced space typically found in urban environments. Precast, specifically, can be erected in tight urban spaces where other forms of construction would not be possible. Also, since precast isn’t shipped to job sites until it is ready for the project, job sites remain free of extra clutter.
Quality can be improved with offsite construction because components are manufactured in environments that operate under strict quality guidelines. PCI has developed strict quality standards that all PCI certified plants are required to follow in order to retain their certifications.
With the introduction of technology, offsite construction has seen an increase in both speed and accuracy. Technology has advanced the industry by minimizing errors that would be difficult to address with onsite construction methods.
Precast concrete also allows for less personnel on the job site. Less people equals less risk of injury and/or accidents. Precast concrete components also helps companies who are struggling to fill positions by allowing them to work with half of the workforce they would need if they were using the cast in place process.
The Offsite Manufacturing Process
Designers and precasters first plan out what is required to create the project elements. This can range from creating precast panels to creating modular structures which contain everything the building needs such as electrical boxes and insulation.
Next, the elements are designed usually with input from precasters who provide necessary expertise to designers of what can and cannot be achieved with precast.
Once the design is approved, the precasters begin fabricating the precast components. This is also the time when formliners are used to create unique shapes and patterns to achieve the desired look.
After the precast has been created, it is shipped from the precast plant to the job site. Pieces can be joined together beforehand or shipped separately depending on the job needed.
Finally, the precast arrives at the job site ready to be assembled. Certified precast erectors are responsible for erecting the precast components safely. Precast usually decreases the amount of time needed and helps speed up the construction schedule, sometimes shaving months or years off project schedules.
PCI Gulf South Offsite Construction Project Examples
Biloxi Bay Bridge
Included 1700 precast components which were erected in 16.5 months
New Orleans BioInnovation Center
Erected in a a tight urban environment in a New Orleans, LA neighborhood
LSU Basketball Practice Facility
Precast cladding cut the schedule down by a year and saved $500K in costs