A recent survey of AEC firms and real estate owners and developers found a strong majority that had deployed off-site construction in the previous 12 months and planned to utilize it to a greater extent going forward.
The Off-Site Construction Council of the National Institute of Building Sciences in Washington, D.C. conducted its 2018 Off-Site Construction Industry Survey as a follow-up to a 2014 survey to gauge the industry’s interest in off-site construction, which it defines as the planning, design, fabrication, and assembly of building elements at a location other than their final point of assembly onsite.
Ryan Smith of Washington State University and Kambaja Tarr of the University of Utah conducted and compiled the latest survey for NIBS.
“With the ongoing shortage of skilled craft workers (which exceeded two million in 2017), prefabrication in a controlled, off-site environment may become a necessity for many U.S. contractors attempting to remain competitive with a lower-skilled workforce,” the survey states. But as with any new process or technology innovation, and despite growing demand, ”uncertainties accompany the utilization of off-site construction.”
The commercial, multifamily and healthcare sectors are where off-site construction has been finding its greatest demand. Image: NIBS
A total of 205 participants responded to the 2018 Off-Site Construction Industry survey, versus 312 respondents to the 2014 poll. The participating companies provide a variety of different services, including construction management/general contracting (24.75% in 2018; 46.7% in 2014), engineering (21.72% and 38.3%), trade contracting (2.53% and 27.3%), architecture (87.88% and 15%), and owners/developers (10.1% and 8.3%).
Nearly nine of 10 respondents to the 2018 survey (87.72%) had used off-site fabricated components to some degree over the previous 12 months, and more than eight in 10 (81.63%) expected to engage off-site construction more often or the same amount in the following 12 months. (Both percentages were down slightly from the 2014 survey.)
The primary benefit identified in both surveys is a reduced overall project schedule, specifically the duration of the construction phase.
For more than three fifths of respondents (63.22%) designers, architects and engineers were the primary decision makers about when off-site construction is implemented, followed by construction managers or general contractors (47.67%), clients (41.97%), and others, primarily subcontractors (21.24%).
Keeping projects on schedule is where companies that deploy off-site construction have been seeing the greatest benefit. Image: NIBS
Interestingly, however, respondents stated that the most significant barrier to off-site construction is the culture of design and construction in general. Comments indicated that late design changes, lack of collaboration and an adversarial climate for project delivery leads to difficulties in realizing the benefits of off-site construction.
The survey notes that the building component fabrication industry is still maturing and needs more time to integrate effectively with site-built work. In addition, contractors are still learning how to manage off-site products for assembly on-site.
Transportation is another significant barrier: specifically, how far away a factory is located from the construction site.
Respondents in both surveys qualitatively noted that some projects, particularly those with long spans, may not be suited for the use of pre-fabricated elements, and that each project has unique requirements that must be met through an appropriate technical solution.
Related Stories
| Aug 11, 2010
Thrown For a Loop in China
While the Bird's Nest and Water Cube captured all the TV coverage during the Beijing Olympics in August, the Rem Koolhaas-designed CCTV Headquarters in Beijing—known as the “Drunken Towers” or “Big Shorts,” for its unusual shape—is certain to steal the show when it opens next year.
| Aug 11, 2010
Robert F. Kennedy Main Justice Building
The Robert F. Kennedy Main Justice Building houses the U.S. Attorney General's office, the Justice Department headquarters, and the largest historic art collection of any GSA-built facility, so its renovation had to be performed with the utmost care. Offices housing hundreds of lawyers and staff had to remain operational during the construction of a brand new $3.
| Aug 11, 2010
Silver Award: Please Touch Museum at Memorial Hall Philadelphia, Pa.
Built in 1875 to serve as the art gallery for the Centennial International Exhibition in Fairmount Park, Memorial Hall stands as one of the great civic structures in Philadelphia. The neoclassical building, designed by Fairmount Park Commission engineer Hermann J. Schwarzmann, was one of the first buildings in America to be designed according to the principles of the Beaux Arts movement.
| Aug 11, 2010
Bronze Award: Garfield High School, Seattle, Wash.
Renovations to Seattle's historic Garfield High School focused mainly on restoring the 85-year-old building's faded beauty and creating a more usable and modern interior. The 243,000-sf school (whose alumni include the impresario Quincy Jones) was so functionally inadequate that officials briefly considered razing it.
| Aug 11, 2010
Managing the K-12 Portfolio
In 1995, the city of New Haven, Conn., launched a program to build five new schools and renovate and upgrade seven others. At the time, city officials could not have envisioned their program morphing into a 17-year, 44-school, $1.5 billion project to completely overhaul its entire portfolio of K-12 facilities for nearly 23,000 students.
| Aug 11, 2010
Tall ICF Walls: 9 Building Tips from the Experts
Insulating concrete forms have a long history of success in low-rise buildings, but now Building Teams are specifying ICFs for mid- and high-rise structures—more than 100 feet. ICF walls can be used for tall unsupported walls (for, say, movie theaters and big-box stores) and for multistory, load-bearing walls (for hotels, multifamily residential buildings, and student residence halls).
| Aug 11, 2010
Financial Wizardry Builds a Community
At 69 square miles, Vineland is New Jersey's largest city, at least in geographic area, and it has a rich history. It was established in 1861 as a planned community (well before there were such things) by the utopian Charles Landis. It was in Vineland that Dr. Thomas Welch found a way to preserve grape juice without fermenting it, creating a wine substitute for church use (the town was dry).
| Aug 11, 2010
Team Tames Impossible Site
Rensselaer Polytechnic Institute, the nation's oldest technology university, has long prided itself on its state-of-the-art design and engineering curriculum. Several years ago, to call attention to its equally estimable media and performing arts programs, RPI commissioned British architect Sir Nicholas Grimshaw to design the Curtis R.
| Aug 11, 2010
Silver Award: Hanna Theatre, Cleveland, Ohio
Between February 1921 and November 1922 five theaters opened along a short stretch of Euclid Avenue in downtown Cleveland, all of them presenting silent movies, legitimate theater, and vaudeville. During the Great Depression, several of the theaters in the unofficial “Playhouse Square” converted to movie theaters, but they all fell into a death spiral after World War II.
| Aug 11, 2010
Biograph Theater
Located in Chicago's Lincoln Park neighborhood, Victory Gardens Theater Company has welcomed up-and-coming playwrights for 33 years. In 2004, the company expanded its campus with the purchase of the Biograph Theater for its new main stage. Built in 1914, the theater was one of the city's oldest remaining neighborhood movie houses, and it was part of Chicago's gangster lore: in 1934, John Dillin...
