The new carillon tower on the campus of St. Hugo of the Hills Catholic Church in Bloomfield Hills, MI, was recently designed using limestone to complement the existing church on campus. According to Anthony Gholz, Jr., AIA, NCARB, Vice President and Director of Architecture for DiClemente Siegel Design Inc. of Southfield, MI, the owner wanted a tall soaring carillon tower comprised of stone. “I conceived of the project as a single block of stone, from which the functional spaces have been carved out,” explained Gholz. “The remains of the block are pooled at the bottom of the tower as a broken stone plinth.”

More than 1,600 pieces of honed Grey Fleuri limestone from Mankato Kasota Stone, Inc. of Mankato, MN, were selected for the 100-foot-tall tower, which overlooks an existing reflecting pool and valley formed by a small creek. Gholz describes the limestone as an “aged warm buff-colored” material.

Gholz said that the owners originally wanted to use granite to match the church's stone altar, but they were eventually convinced that the limestone was more compatible with the exterior of the existing church. “As an architect, I wanted a stone that had a presence from a distance, but also had detail up close,” said Gholz. “An integral part of the design from the beginning was bringing the people to and through the tower to a small contemplative space on the south which overlooks the valley to the church's original stone chapel in the distance.”

According to the architect, the vertical module of the tower is 3 feet, and the stone cladding responds to that. He added that the roof cap has special sizes on the slope which are 3 inches thick and up to 7 feet long. “The tower stones are all the same type with the sills at the openings polished, and the typical vertical stone honed,” he said. “The plaza level has stone pavers to match the existing plaza, which gives the ground plane an aged look reminiscent of an Italian piazza.”

Gholz said that two challenges arose while constructing the tower. “The biggest challenge regarding the stonework during design was determining the thickness and size of panels for various locations on the tower,” he explained, adding that a lot of discussion took place between the architect, engineer and the stone supplier. “During construction, [the challenge] was getting the crane to the site through the flood plain via a specially constructed road, and coordinating stone installation on a very restricted site - on a hill between an occupied church and the flood plain.”