Smart Solutions Category: Hangers/Clamps/Fasteners

DSI Uses CADDY Products to Gain an Edge in the Competitive Austin Market

Faced with the need to minimize noise and limit work to daytime hours for a hospital remodeling project, Dynamic Systems, Inc. (DSI) prefabricated as much as possible, calling on CADDY products from Pentair to get the job done and also saving time on the jobsite. The project called for DSI to add a floor to the hospital while the hospital was still serving patients.

Denny Gosser and the other DSI project managers meet regularly with the prefab shop to discuss how they can be more efficient on the jobsite. This constant examination of their means and methods has led to DSI becoming one of the top mechanical contractors in the booming Austin, TX, market.

Before concrete decks were poured for the hospital, the DSI team positioned preset anchors, located by using building information modeling (BIM) as well as GPS and laser-guided location solutions. Because the overhead anchors were installed before the concrete was poured, Gosser eliminated much of the timely hammer drill use that would normally be required on such a project.

DSI used CADDY ROD LOCK, a threaded rod fastening system that is available in a lot of different configurations for a multitude of applications. Unlike traditional methods that involve hours of threading nuts or other hardware onto threaded rod, with CADDY ROD LOCK, the assembly is lifted and locked into place, saving DSI valuable jobsite time.

The DSI team prefers to use a CADDY ROD LOCK Telescoping Strut Replacement, or TSR, for light-duty trapeze applications. The TSR is a strut profile that telescopes to accommodate rod spacing from about 12″ to 20″. “We really liked the CADDY TSR200RL,” said Gosser. “It’s much easier than dealing with 20’ sticks of strut everywhere. We also don’t have to cut strut, so we saved time there, and it also didn’t disturb the hospital.”

Gosser specified CADDY ROD LOCK TSR for applications such as medical gas, heating, hot water piping, and domestic water piping. In some applications DSI had to use a three-layer trapeze with different services running down the same pathway. Because the profiles could be easily pushed up the threaded rods, building a three-layer trapeze was faster than building a single-layer trapeze with traditional methods.

“Now that they’re available,” said Gosser, “we’ll use the CADDY ROD LOCK preset anchors for similar applications in the future. These anchors allow the threaded rod to be pushed in place, rather than threading it in. This way you can preassemble the hanger to the rod, then just shove the rod into the hanger.”

For larger applications CADDY offers traditional strut profiles, precut to length, with integrated CADDY ROD LOCK devices on each end. They can be used the same way as the TSR, but work with heavy-duty applications. Gosser said he uses the TSR solution for applications from 10″–16″ and will turn to CADDY ROD LOCK strut in precut lengths for larger applications.

DSI Project Manager Denny Gosser said CADDY SLOT LOCK clevis hangers, shown here ready for pipe installation, make the job easier for installers, minimizing fatigue and maximizing safety.
DSI Project Manager Denny Gosser said CADDY SLOT LOCK clevis hangers, shown here ready for pipe installation, make the job easier for installers, minimizing fatigue and maximizing safety.

Another example of adopting an innovative solution to solve a very common problem is Gosser’s use of CADDY SLOT LOCK clevis hangers. Unlike a traditional clevis hanger, CADDY SLOT LOCK has a rigid bar that slides in place to join the two halves of the hanger, rather than threading a long bolt through the hanger halves and into a nut on the outside. Additionally, Gosser noted that CADDY SLOT LOCK makes the job easier for the installers. “It minimizes fatigue and maximizes safety as well,” he said. “The guys spend less time with the pipe on their shoulder, but also less time with their hands off the ladder.”

When asked about the reaction of the installation crew to these new solutions, Gosser said, “The team recommended using the same stuff on the next hospital.” When it comes to applying innovative products and techniques, DSI knows what they want. “We have the set of materials that we like to use, and it’s all CADDY stuff,” said Gosser.

For more information, visit www.erico.com/caddy.asp.

Smith & Oby Combines Prefabrication and ERICO’s New CADDY ROD LOCK System to Cut Installation Time

In early 2011, Smith & Oby Company began work on a new office building in Cleveland, OH, that included 250 active chilled beams, which required an extensive amount of small-diameter copper pipe and multiple trapeze racking systems. To manage installation of approximately 28,000 linear feet of pipe in a 95,000-square-foot building, Smith & Oby turned to ERICO for an innovative and time-saving installation solution.

Having worked with ERICO on many projects in the past, Will Vranich, project manager at Smith & Oby, knew the company could supply the right products for this demanding project. So when ERICO suggested a newer product—the CADDY® ROD LOCK channel nut—Smith & Oby was willing to give it a try.

“ERICO is aggressive in adding new products in the marketplace,” said Vranich. “Not every item will be a hit, but it’s the best way to improve the industry.”

The Idea Behind CADDY ROD LOCK

Threaded rod is one of the most commonly used products by contractors of all trades, but it can be very difficult and tedious to work with. The ability of contractors to use pre-assembly for many high-volume applications is severely limited by how standard threaded connections are made. The CADDY ROD LOCK system, which includes a beam clamp, channel nut, and anchor screw, seeks to eliminate the need for contractors to rotate the threaded rod.

The CADDY ROD LOCK’s “push-to-install” design can dramatically reduce the installation time of threaded rod support structures when compared with conventional fasteners. “Contractors do not have to rotate a threaded rod into position,” said Eric Osborn, CADDY product development manager at ERICO. “Instead, assemblies can simply be pushed into position. This allows contractors to create modular assemblies in an efficient, safe way, saving huge amounts of time and money.”

For a large office building project, Smith & Oby is prefabricating copper racks in its shop, shipping them to the jobsite, inserting ERICO’s CADDY ROD LOCK into the strut, then lifting the racks in place to save labor and time.

So Much Pipe, So Little Time

By using ERICO’s CADDY ROD LOCK channel nuts for the office building project, Smith & Oby could prefabricate their complex assemblies and then easily lift and lock them into place at the jobsite by pushing the threaded rod supports into the channel nuts. The technology even works with threaded rod with minor burrs or imperfections, helping to eliminate clean-up time and the need to replace damaged threaded rod.

For the office building, Vranich said his process has been to prefabricate the copper racks in the shop and then ship the racks to the jobsite. “CADDY ROD LOCK is inserted into the strut, and once onsite, we lift the racks in place with some expected labor savings. The entire project includes about 350 racks of pipe.”

However, Vranich admitted that using CADDY ROD LOCK did take a little getting used to. “There is a learning curve in anything new,” he said. Initially, he saw that the installers were indifferent to using the product. “But indifferent is a really good reaction to new products, because they can often disregard new products quickly.”

The CADDY ROD LOCK channel nut was chosen for this project because of the potential labor savings in the field in conjunction with prefabrication. “Prefabrication is vital to this project both to deal with the delays and also to help manage the materials,” explained Vranich. “And, we expect labor savings by moving work into the controlled environment of the shop.”

For more information on the innovative CADDY ROD LOCK system, contact your local ERICO representative or visit www.erico.com/caddyrodlock.

MCAA thanks ERICO for being a supporter of MCAA 2013.

MCAA’s 2013 Pre-Fabrication Conference includes a tour of Smith & Oby Company’s facilities in Walton Hills, OH.