The newly constructed Shamrock Trading Corporation’s global headquarters is set on 34 acres at its Overland Park East Campus in Kansas. Exemplifying monolithic, modern building design, its two Class A office towers, single-story connecting building and parking garages feature aluminum framing systems by Tubelite and architectural finishes by Linetec.

Opened in December 2024, Shamrock Tower II also showcases the first completed project example with the Tubelite 400SS SG Curtain Wall shop-glazed, fully unitized, thermally broken system. The aluminum framing features dual finishes by Linetec with architectural painted exteriors and anodized interiors. The curtain wall’s insulating glass units (IGUs) on Tower II are composed of Viracon VRE insulating glass products and the high-performance Viracon Thermal Spacer.

During the workday, Shamrock’s associates can enjoy natural light and outdoor views of its Overland Park East Campus. At night, the curtain wall’s integrated LED light blades distinctively illuminate the exterior. In 2024, Shamrock was ranked as one of America’s Most Loved Workplaces by Newsweek and was honored in multiple categories.

Cohesive Corporate Campus

At the start of the East Campus project’s development, the architectural team at Bell/Knott & Associates contacted Doug Urich, president of ARCHON Fenestration Technologies, who is a manufacturer’s representative for Viracon and Tubelite products. In addition to his relationship with Bell/Knott, Urich has worked on several high-profile projects with JE Dunn Construction, which served as the general contractor for Shamrock’s global headquarters.

Credit: Abstract Photography, Inc. | Terry Wieckert, courtesy Apogee Architectural Metals

Two glazing contractors — Structural Glass Systems and AGP — each completed separate phases of Shamrock’s East Campus construction. Urich’s involvement and the Apogee brands ensured a unified appearance that met project performance requirements.

Bell/Knott & Associates initially contacted Urich for glass assistance in creating a cohesive campus design. “They were seeking an aesthetically driven, clean, modern look,” he explained. “I listened to their needs and took the opportunity to discuss the building skin, offering an approach… to achieve their intended appearance and performance, on schedule and within budget.”

The solution combined several brands of Apogee Enterprises, Inc.: multiple architectural glass types by Viracon, aluminum framing systems by Tubelite and finishing by Linetec.

Contemporary Appearance, Collaborative Effort

Accentuating Shamrock’s East Campus modern aesthetic and an enduring positive impression, the Bell/Knott architectural team selected high-performance architectural finishes in a Silver Gray color. Linetec finished all the aluminum framing members, face caps and doors for Tubelite in 70% PVDF resin-based architectural coating.

Credit: Abstract Photography, Inc. | Terry Wieckert, courtesy Apogee Architectural Metals

Multiple Viracon VRE glass products with low-e coatings and in clear, blue and gray hues were fabricated into IGUs. These were glazed into the Tubelite aluminum framing system, meeting the necessary climate conditions and building codes.

On the north and south facades of each tower, LED light blades are vertically integrated with the curtain wall and offer programmable light effects. Linetec also finished these decorative metal elements to create the desired look.

Credit: Abstract Photography, Inc. | Terry Wieckert, courtesy Apogee Architectural Metals

The first phase of Shamrock’s corporate campus, completed in 2020, included the eight-story, 265,000-square-foot Tower I plus a one-story building with 30,000 square feet of enclosed connecting space. Glazing contractor Structural Glass Systems installed Tubelite’s pre-glazed curtain wall, storefront and doors.

Clear glass lites were specified for most of the building, including its segmented walls, at the center core and on the eighth floor. Also on the eighth floor, Tubelite terrace doors open onto an exterior patio in the southwest corner. Blue glass was used at the corners, adding visual interest to the exterior. Gray glass was used for Tubelite storefront and Standard Medium Stile Entrance doors at the ground level and the low-rise connecting concourse.

Credit: Abstract Photography, Inc. | Terry Wieckert, courtesy Apogee Architectural Metals

Behind Shamrock Tower I and II, Tubelite framing, finished by Linetec with glass by Viracon, also was chosen for the parking garages’ enclosed staircases and installed by Structural Glass Systems.

Design Symmetry, Dual-Finished Framing

On the newly opened Shamrock Tower II’s 12-story, 329,400-square-foot office building, Tubelite aluminum framing systems, Viracon clear and blue glass, and Linetec finishing provided design symmetry between the two towers.

As a single-source solution for architectural finishing, Linetec provided the thermal breaks and insulating barriers in Tubelite’s aluminum-framed curtain wall, storefront and Tower II entrance systems. The aluminum framing members’ exterior and interior surfaces must be separated to reduce energy transfer. This thermal break not only contributes to energy-efficient building envelopes, but it also improves condensation resistance and acoustic performance for comfortable interior spaces.

Projects that choose thermally broken aluminum framing systems manufactured using polyamide thermal strips can benefit from Linetec’s dual finishing capabilities. This offers design flexibility and economic advantages to specify different finishes on the exterior and interior.

For Shamrock Tower II, the Tubelite curtain wall on floors 2 through 12 is finished on the exterior in Silver Gray and the interiors are finished in a Class I clear anodize. Both industry-leading finishes meet the highest performance standards — AAMA 2605 for painted coatings and AAMA 611 for anodized coatings.

Energy-Efficient Envelope, Easier Installation

Tower II also used clear glass for its center core and segmented walls, and blue glass to highlight the corners. This high-performance, low-e coated glass also balances natural daylight with energy performance. Part of the IGUs on Tower II use Viracon Thermal Spacer (VTS®) to replace the traditional spacer, desiccant and primary sealant with a single, better-performing component.

The IGUs with Viracon glass and VTS were incorporated into Tubelite’s thermally broken framing systems, optimizing thermal performance with low U-values and achieving high condensation resistance. Glazing contractor AGP fabricated and installed the unitized Tubelite 400SS SG Curtain Wall and Therml=Block® Medium Stile Entrance doors throughout Tower II.

“Both glaziers wanted a pre-glazed, unitized approach,” noted Urich. “Shamrock Tower I features a first-generation of the curtain wall design as a hybrid, partially unitized system with exterior face caps. Tower II is the jewel; it’s a fully unitized, thermally broken system.”

Both curtain wall systems were shop-glazed and have a concealed, screw-spline construction emphasizing the buildings’ smooth, monolithic style.

“It’s a homerun in my book,” said Urich. He added, “Shamrock Tower II was extremely successful in proving Tubelite 400SS SG Curtain Wall offers a shop-glazed, fully unitized, thermal system that can save glaziers time and labor, and meet the aesthetic and performance requirements of high-profile projects.”

Credit: Abstract Photography, Inc. | Terry Wieckert, courtesy Apogee Architectural Metals

Complementing the curtain wall, Tubelite entrances are engineered for compatibility, further supporting their ease of installation. The doors’ steel tie-rod frame construction enhances their future serviceability and is backed with a lifetime warranty. The durability and adaptability of these tie-rod doors mean that worn or damaged components can be repaired and replaced without having to install an entire new door. After their long lifespan on the building, the aluminum doors and framing can be recycled.

The high-performance Tubelite curtain wall with Viracon glass and Linetec finishing contributed to a visually attractive, energy-efficient building envelope for Shamrock’s global headquarters. On the interior, the glass and framing systems support comfortable, healthy spaces.

Within its new, modern corporate campus, up to 1,000 employees support Shamrock’s transportation services, finance and technology brands including Ryan Transportation, RTS Financial, RTS International, RTS Carrier Services and ProTransport. The company continues to expand its employee base to serve its customers’ growing needs.