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Projects receive high ACI Indiana Chapter honors

Rabbit Run CSO 1PROJECT OF THE YEAR

Rabbit Run Combined Sewer Overflow is Project of the Year awarded by the American Concrete Institute (ACI) Indiana Chapter at last month’s Annual Meeting and Awards Program. Congratulations to the City of Huntington, the consulting firm Greeley & Hansen and F.A. Wilhelm Construction on this recognition.

Located in Huntington, Indiana, the Rabbit Run Combined Sewer Overflow project consists of a 2,500,000 gallon sewer storage tank constructed to help alleviate the chance for a sewage spill into Indiana waterways during severe weather.

Wilhelm’s construction of the tank consisted of blasting over 23,000 cubic yards of rock. The base mat was 2-feet 6-inches thick while the cast-in-place walls were 5-feet 3-inch thick, 35-feet high and were poured in one continuous lift so there were no horizontal construction joints. Each of these wall pours averaged 550 cubic yards of concrete. The elevated deck presented a unique issue in re-enforcing steel placement as it required the use of #18 rebar, the largest that is manufactured.

Other improvements to the facility consisted of new screening equipment, pump improvements, and electrical/controls upgrades. Prior to entering into a contract with the City, the project team was able to reduce the construction costs by over $700,000 through initial value engineering. Additional savings will be realized by the City following completion of construction.

In addition to the Rabbit Run, several other Wilhelm projects were recognized by the American Concrete Institute (ACI) Indiana Chapter for Outstanding Achievement in Concrete in 5 categories.

Outstanding Achievement in Concrete – Category: Sustainable Concrete

Wilhelm’s work on Stout Field Joint Force Headquarters constructed for the Indiana National Guard included a steel-framed structure featuring slab-on-metal deck construction with a 40,500 square-foot renovation and 77,100 square-foot addition. Wilhelm served as the general contractor and self-performed concrete and site work. An estimated 4,765 cubic yards of concrete were used.
The new, two-story headquarters features an impressive limestone entrance with a curved metal paneled roof. The auditorium is constructed of stained wood panels and high end mill work. Special care was also taken so existing trees on site were protected and any damage to them prevented during construction. The project is under review for LEED Silver Certification.

Outstanding Achievement in Concrete – Category: Transportation 3

The Edge Parking Structure in downtown Fishers, Indiana is connected to a medical office building. F. A. Wilhelm’s responsibilities include both the concrete in the parking structure and the platform for the medical office building. The four-story structure is cast-in-place post tension concrete, using 4,400 cubic yards. The post- tension decks were cast using a 5000 psi performance mix supplied by Irving Materials. The performance mix reached a tensioning required strength of 3000 psi within 18 hours allowing Wilhelm to expedite the schedule of the structure. The architectural appeal of the 327-car garage came from the cast-in-place reveals on the bumper walls. The reveals gives the bumper walls a boxed out appearance and are painted.

Outstanding Achievement in Concrete – Category: Commercial 3

Wilhelm partnered with Kremers-Urban to build a pharmaceutical warehouse at their Seymour plant. The unique structure consisted of 117,000 square feet of precise temperature controlled environments with strict humidity control.

Outstanding Achievement in Concrete – Category: Institutional and Cultural Spaces

The Lilly Recreation Center at DePauw University is a LEED Gold Certified 25,900 square foot renovation with a 37,700 square foot addition. Wilhelm was the construction manager on this expansion and self-performed structural steel.

Outstanding Achievement in Concrete – Category: Specialty Concrete

Cummins Seymour Technology Center is a two-story addition with office space, dinning, a new plant entrance and plant services. The 89,400 square foot addition consists of exposed white concrete walls requiring a very specific mix design and a highly complex forming system to create the desired look. The mix design used 634 pounds of white cement, produced by Federal Cement.

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