What are large concrete slabs or fabricated panelized units used in construction referred to as?

The term that best describes large concrete slabs or fabricated panelized units used in construction is commonly recognized in the industry as "Pre-fabricated Panels." These are specifically designed units produced off-site in a factory setting and then transported to the construction site for assembly. This method allows for precise manufacturing conditions and can result in reduced construction time and improved quality control.

The other terms do not accurately reflect the industry-standard terminology. While "Construction Slabs" might suggest a general idea of large concrete sections, it lacks the specific connotation of being manufactured off-site for modular use. "Foundation Units" implies components specifically for foundational work, which doesn’t encompass the wider application of pre-fabricated panels. The term "Total System," while it might suggest a comprehensive approach to construction, does not specifically denote the component in question and is not a recognized descriptor for concrete slabs or panels.

In summary, "Pre-fabricated Panels" is the industry term that encapsulates the concept of large, manufactured concrete elements that are utilized in modern construction practices.