Originally posted on buildsteel.org
Controlling costs is essential to staying within budget for a project — but there are factors to consider beyond raw material prices, energy, and labor.
The choice of certain systems, such as framing systems, can garner significant cost advantages. While each project is different, cold-formed steel (CFS) framing can often add thousands of dollars to your building’s bottom line. Here are five examples where CFS framing was used in place of another building material to realize significant cost savings.
$2.50 savings per square foot
Cold-formed steel framing was chosen for the office renovation at the Chart Industries, Inc., manufacturing plant in La Crosse, Wisconsin, because of its durability and flexibility to integrate with other systems. The architect and structural engineer were able to use CFS framing along with the building’s existing foundation and structural steel columns.
Beyond flexibility, the CFS framing added significant savings to the renovation. The CFS system saved about $2.50 per square foot on the exterior walls as opposed to masonry wall construction.
$1.3 million in insurance savings
While wood sometimes has a stud-for-stud cost advantage over CFS, wood is combustible. Insurance carriers generally assess high builders risk premiums and property insurance premiums for wood construction.
According to “Insurance Savings with Cold-Formed Steel” from the Steel Framing Industry Association (SFIA), builders risk insurance adds $0.48 to $0.62 per $100 of construction value on wood-framed projects. CFS framing has the advantage.
The builders risk insurance on a four-story, CFS-framed, 400-unit hotel built in 24 months cost $360,000, SFIA noted. The same coverage on a wood-framed hotel would have cost $1.6 million. Thus, the developer saved about $1.3 million. And, he pays $66,000 less each year for property insurance.
Up to $10,000 savings in security detail
Many Canadian municipalities have mandated new fire-related requirements for wood-framed mid-rise buildings. These include detailed fire safety plans, floor-by-floor sprinklers and standpipes, fire watches during hot work, and extra site security.
The Ontario Ministry of Municipal Affairs and Housing’s (MMAH) latest guideline, “Fire Safety During Construction for Five and Six Stores Wood Buildings in Ontario: A Best Practice Guideline,” details over a hundred pages of fire mitigation measures for wood projects. These precautions include the use of charged fire hydrants prior to bringing significant amounts of combustibles on site, after-hours on-site lighting and security cameras, and after-hours security guards for fire prevention.
CFS-framed projects have a cost advantage because CFS is non-combustible. One builder had to post 24-hour security guards during construction of his wood-frame project, SFIA noted. The security detail added $6,000 to $10,000 per month.
Additional $100,000 earned for a shorter construction timeframe
On a five-story apartment building, CFS framing shaved at least six weeks off construction versus poured concrete or masonry, according to an SFIA case study. Because of the time savings, the developer was able to earn an extra $100,000 by collecting rent from tenants earlier than expected.
Additional savings came through lower financing charges, pared site supervision, and less labor — all by using CFS framing on the project.
CFS even augmented the schedule in comparison to masonry and concrete construction. “The other trades were able to access the building much earlier,” the general contractor said.