Maximizing Modular Fabrication
About the Author: Nick Gomez of Lowney Architecture has more than 15 years of experience working on multi-family housing and modular projects for nonprofit and for-profit clients. As the Oakland, Calif.-based firm’s Multi-family Studio Director, Nick has managed award-winning projects from design development through construction administration.
An increasing number of projects across different markets use modular construction. The modular building approach allows projects to capture the efficiencies gained by integrating design, manufacturing, and construction technologies without compromising aesthetic intent. When working toward a successful modular project, it is ideal to have experienced architecture, engineering, and contractor team members.
Projects using off-site modular construction must comply with the same building codes as conventional on-site construction. However, many states require separate permitting for the off-site factory and the on-site work. This process involves coordination between the architecture, engineering team, and factory.
Respect The Timelines And Deliverables
Modular buildings are similar to traditional on-site buildings in appearance and performance. One significant advantage of modular buildings is the shortened timeline, which delivers cost savings. This is because the modular pieces are constructed in a climate-controlled factory, which removes the possibility of weather-related delays.
This protected working environment increases efficiency allowing the structure to be built faster and cost less. Also, having a separate workspace from the building site allows for concurrent building. While the site foundation or podium is being constructed, the building components are simultaneously built at the off-site factory.
It is essential to establish a design freeze using a modular construction approach because of the factory production schedule and process. Design changes late in the process can be costly and require permit drawings modification and impact factory shop drawings. Unlike traditional construction processes, up-front decision-making and design freezes are critical for the modular construction processes, leaving little time in the schedule for alterations.
The modular prototype phase allows the owner, architect, and factory to set the basis of the design for production. This happens ahead of full production and enables the team to review, approve the design, and make small minor modifications to finish details and materials before the start of procurement and full production. With the fast pace of factory production, the design team is not often capable of reviewing every module. It relies on the contractor or third-party reviewer to inspect, so having the approved prototype is critical as a basis to review mods while in production.
Parameters
When designing a modular building, architects should address not just the design of a structure and its constitutive components; they should also be intentional about the process by which these are fabricated, transported, and connected. The design of individual modules may be affected by the manufacturing standards and assembly process of a particular facility. At the same time, the parameters of the design will dictate the ideal execution of those processes. For example, designers must look at the size of individual unit types and modules and how those sizes can be optimized across multiple unit and module types to increase production efficiencies.
When designing for modular construction, the project team should shift perspective to the building as a connected component system. This can help open more modularization possibilities, leading to a more iterative and less linear design process. The modularity concept should ideally be embedded in and inform all phases of a project, not just the construction phase and lead to a more collaborative design and delivery method.
Warranty And Liability
When implementing modular construction, project teams will consider some unique issues related to financing and liability. For example, factories want a warranty to start when production is complete and not building assembly. It always becomes a negotiating point with the contractor and owner.
Most vertical construction takes place off-site, which shifts the typical construction project balance based on the expected percentage of labor versus material. Modular construction also involves particular risks that need to be considered and insured against.
Understanding The Timeline For Deliverables
As outlined, modular construction is a primary benefit because it allows for building components to be constructed simultaneously that site work is being completed. Once the fabrication of the modules and site operations begin, the contractor should maintain regular communication with the modular manufacturer to ensure the schedule is maintained. According to the schedule, this early communication will ensure that the parallel processes are closely coordinated and proceed in step with each other.
Suppose the team respects the early decision making and design freezes set by the factory schedule. In that case, all of these factors are understood and met, depending on the project’s complexity. In that case, the team should see a construction schedule reduction of 20-40 percent.
More from Modular Advantage
Samantha Taylor: Leading the (Modular) Design of Tomorrow
“With modern technology and the way we’ve all embraced things like BIM, file sharing, and video conferencing since COVID, it’s easy to collaborate with companies in Austria, or Singapore, or anywhere else in the world.”
Greg DeLeon: Military Engineering to Modular Design
Greg DeLeon, a structural engineer at ISE Structural Engineers in Temecula, California, can tell you not only how large a beam needs to be to support a house, but also how much explosives you’ll need to take it down, thanks to his unique combination of professional and military experience.
To Remake North Minneapolis, Devean George Swaps Basketball for Buildings
He’s lived in Los Angeles, Dallas, and San Francisco (to name a few). He’s delivered championships with the Los Angeles Lakers and made career-defining moves with the Dallas Mavericks and the Golden State Warriors. No matter the wins, the championships, or even the seemingly impossible 3-pointers, Devean George has always returned to where it all started for him: Minneapolis.
Chelsi Tryon: Making the World a Better Place
For Chelsi Tryon, Director of Environmental, Social, and Governance (ESG) for WillScot Mobile Mini, nothing is more enjoyable than increasing the
company’s sustainability efforts while simultaneously doing her bit to save the environment.
Joshua Hart: Pushing Boundaries
Joshua Hart, P.E., vice president at Modular
Solutions, can sum up his job responsibilities in one sentence: “I do whatever needs to be done.” Hart thrives on the variety and the opportunity to be involved in every aspect of the company. And it shows! You might say Hart has come full circle.
Jamie Metzger: From Construction to Apparel and Back Again
Growing up in a blue-collar city like Edmonton, Alberta, Canada, it’s no surprise that Jamie Metzger spent some time working labor jobs on construction sites. It’s one of the most common summer jobs in the city. But that’s probably the last predictable thing about this particular story.
Victor Masso: Expanding Modular in Puerto Rico
Victor Masso joined 2 Go Storage, a company started by his grandfather and father, in 2018 to develop a modular building division in the wake of the devastation caused by Hurricane Maria in 2017. Prior to joining the company, he had worked in the industry for about four years focusing on pharmaceutical, commercial, and government projects.
Eliyah Ryals: Finding the Perfect Fit
It’s not common for people to find their perfect career fit straight out of college. It’s even less common to find it in the town you grew up in. But that’s exactly what happened when Eliyah Ryals was told about vacancies at Panel Built and made the decision to apply.
Through It All, It’s Still About the Workers
By February 2024, the number of available, unfilled construction job openings had reached an all-time high. At some point, interest rates will fall, creating another surge in demand for such workers. In short, solving the nation’s skilled worker shortage issue has never been more important.
Navigating Insurance Challenges in the Modular Construction Industry
Utilizing practical written minimum insurance and indemnity requirements, along with monitoring certificates of insurance by someone who has COI training will not yield a perfect risk transfer strategy, but the exposure will be managed much better than it likely is currently.