
Wastewater Treatment Plant
Billings, MT, United States
PERI USA Formwork Supports Expansion of Billings Wastewater Treatment Plant
Improvements to Provide Reliable Water Supply, Expand Emergency Reserves
Population growth in Billings, Montana, is putting a strain on the existing water infrastructure in the region. To address the increased demand for water, the existing plant is expanding to include a new state-of-the-art West End water treatment facility that will help ensure a reliable water supply and extend emergency water reserves.
The West End facility will act as a crucial backup to the existing Belknap Water Treatment Plant, ensuring a continuous water supply even if the Belknap plant experiences issues. The expansion will include intake from the Yellowstone River, a pump station, pipeline, a treatment plant, and a clear well for water distribution. The new facility features a 300-acre area with 160 acres of open water across two reservoirs and 140 acres of urban conservation space.
Project crews selected PERI USA to provide cast-in-place deck shoring and formwork to enhance efficiency and reduce labor costs. This enabled workers to pour 2,200 linear feet of concrete for a 21-foot wall that will serve as a containment system for the wastewater plant.
Boosting Efficiency, Reducing Costs
Project managers selected PERI’s MULTIFLEX formwork system for its reduced labor needs and minimized components. MULTIFLEX is a versatile formwork system that adapts to various construction projects. Offering a high load-bearing capacity, efficient material usage, and cost optimization, MULTIFLEX simple assembly enhances productivity while ensuring reliable and durable finishes.
Crews selected PERI USA’s MAXIMO Panel Formwork due to its ability to withstand heavy pour pressures and recycle pours throughout the project. PERI’s MAXMIO cast-in-place deck shoring features innovative tie technology for one-sided installation, streamlining formwork operations. Compared to conventional panel formwork, MAXIMO is significantly faster and requires fewer personnel. Its advanced design can reduce working time by up to 50%.
“Utilizing both of these systems, we were able to significantly reduce labor hours and streamline our workflow without compromising the quality”, said Chuck Ealy, area sales representative at PERI USA. “We were also able to significantly minimize the material waste which contributed to significant cost savings.”
Laying the Foundation
Concrete construction began in Spring 2024 and was completed in Fall 2024. The plant is expected to be ready in late 2026.
The Project
Impressions from the project process
11,672 square feet of MAXIMO was utilized to deliver fast cycle times, minimal ties, and a high-quality concrete finish with efficient single-sided tie technology.
Decking for shoring constructed with PERI PSF plywood, offering multiple reuses, a high-quality finish, and cost efficiency.
Decking for shoring constructed with PERI PSF plywood, offering multiple reuses, a high-quality finish, and cost efficiency.
13,311 square feet of MULTIFLEX shoring was used for this project—chosen for its faster erection and dismantling compared to competitors, thanks to its user-friendly assembly and versatile adaptability.
Initial setup of the MULTIFLEX system, where joists and stringers are configured to support flexible slab formwork layouts.
Ongoing upgrades to the water treatment plant to serve the growing population of Billings. This phase includes the addition of a new water vault structure.
Ongoing upgrades to the water treatment plant to serve the growing population of Billings. This phase includes the addition of a new water vault structure.
MP 625 shoring system set up at 20 ft. height using a single post, enabling safe and efficient concreting operations.
MP 625 shoring system set up at 20 ft. height using a single post, enabling safe and efficient concreting operations.
Empty vault prior to water testing.
Water tank being filled to test watertight integrity. She-bolts with integrated waterstops ensure a leak-proof structure.























11,672 square feet of MAXIMO was utilized to deliver fast cycle times, minimal ties, and a high-quality concrete finish with efficient single-sided tie technology.

Decking for shoring constructed with PERI PSF plywood, offering multiple reuses, a high-quality finish, and cost efficiency.

Decking for shoring constructed with PERI PSF plywood, offering multiple reuses, a high-quality finish, and cost efficiency.

13,311 square feet of MULTIFLEX shoring was used for this project—chosen for its faster erection and dismantling compared to competitors, thanks to its user-friendly assembly and versatile adaptability.

Initial setup of the MULTIFLEX system, where joists and stringers are configured to support flexible slab formwork layouts.

Ongoing upgrades to the water treatment plant to serve the growing population of Billings. This phase includes the addition of a new water vault structure.

Ongoing upgrades to the water treatment plant to serve the growing population of Billings. This phase includes the addition of a new water vault structure.

MP 625 shoring system set up at 20 ft. height using a single post, enabling safe and efficient concreting operations.

MP 625 shoring system set up at 20 ft. height using a single post, enabling safe and efficient concreting operations.

Empty vault prior to water testing.

Water tank being filled to test watertight integrity. She-bolts with integrated waterstops ensure a leak-proof structure.
Project Information

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