Case Studies

The City of Fort St. John's existing storm sewer infrastructure was unable to accommodate peak flow rates during periods of heavy rainfall. With a very tight construction window, DuroMaxx Steel Reinforced Polyethylene (SRPE) pipe was selected over concrete for its light weight, and ease of installation.

Multi Plate, a proven and versatile product since 1934, continues to provide cost-effective reline and stream crossing solutions. Armtec has a history of striving for excellence and is proud to continue the tradition with Strata-CAT.

During the summer of 2011, a 3,000mm circular pipe was washed out six kilometers west of Highway 52 on the 206 Road at Buffalo Creek during the historic flooding that hit the British Columbia Peace Region. The British Columbia Ministry of Transportation was tasked with replacing a washed out drainage culvert and ensuring it would have sufficient hydraulic capacity for future floods. A new drainage structure was required to replace the washed out culvert. In order to deliver the project in a speedy and cost-effective manner, the government tendered the project as a Design-Build. DWB Consulting, with Armtec’s support, prepared a preliminary package for a steel pile supported 6,500mm span x 3,681mm rise Bridge Plate arch with Armtec’s Wire Mesh Wall system. Belvedere Contracting was the successful bidder on the project.

The Chief William Commanda Bridge was first built in 1870, with the superstructure reconstructed in 1926. The City of Ottawa purchased the railway bridge from the Canadian Pacific Railway (CPR) in 2005, and in 2019, the decision was made to construct a multi-use pathway (MUP) on the inactive bridge and rehabilitate the bridge’s substructure. This unused rail structure rehabilitation was part of the City of Ottawa’s active transportation strategy to provide alternative travel options across the Kichi Sipi Ottawa River between eastern Ontario and Western Quebec. It would connect pathways near Bayview Station in Ottawa and the southern tip of Gatineau Park, filling an approximate 4 km gap in river crossings between the Portage and Champlain bridges.

With over 320,000 vehicles per day the intersection of Highways 401, 403 and 410 in Mississauga, ON is one of the busiest in North America. This location is also home to the confluence of several drainage paths, all of which are channeled into one major storm drain, which then pass beneath the intersection through a single storm sewer pipe. The owner, the Ministry of Transportation of Ontario (MTO) recognized that the storm sewer had to be rehabilitated.

The Old Massett Community is located in the north of Haida Gwaii, of the coast of British Columbia, near the Alaskan border. It is the unceded, ancestral and traditional territories of the Haida people. Old Masset Village Council required a solution to increase capacity and improve the operation of the Hiellen Longhouse Village sanitary system infrastructure. Hiellen Longhouse Village is an eco campground on the North Coast of Haida

This covered bridge crossing project was a WGI Westman Group cross division partnership involving Armtec, Behlen, Westman Steel, Meridian and Artspan. Russ Edwards, the owner and founder of WGI, grew up less than a mile away on his family farm in this rural municipality. This bridge project honours the Pioneers of the region by listing the names of families that settled here from 1875 to 1940.

Cerro Verde Mine is an open-pit copper and molybdenum complex near Arequipa in southern Peru. In operation since 1916, it is one of Peru’s oldest copper mines. With demands for copper growing worldwide, processing facilities were expanded as part of the Cerro Verde Production Unit Expansion project. Copper production was tripled to 600 metric tons of copper per year. Included in the infrastructure upgrades was the requirement for approximately 350 metres of conveyor and mine truck tunnels, varying in size from 3,990 to 7,695mm in diameter and buried up to 23 metres below course ore stockpile. New conveyor and mine truck underpass tunnels were required for the mine site as part of the Cerro Verde Mine facilities upgrade.

Neptune Bulk Terminals, located in North Vancouver, transports Canadian commodities to markets all over the world. In their ongoing commitment to protecting the environment and minimizing the impact of operations, Neptune Bulk Terminals commissioned a new dust shroud for their Dumper Building. The structure would manage atmospheric emissions by preventing the spread of dust during operations. Neptune Bulk Terminals contacted Armtec through their consultants to determine whether a structural plate product could meet the project requirements. Armtec proposed Bridge Plate for its versatility, strength and ease of installation. They developed a custom solution designed to meet the needs of this unique project.

The Great Allegheny Passage (GAP) is one of the most picturesque converted rail-trails east of the Mississippi River. Connecting Washington D.C. to Pittsburgh, Pennsylvania this multi-use trail is enjoyed daily by bikers and hikers as it twists its way through the Appalachian Mountains. Near the town of Somerset, the busy trail took an abrupt turn to detour around the historic Pinkerton Rail Tunnel. The tunnel, originally built in 1911 to connect the former Western Maryland Rail-line to the bustling Pittsburgh region, was closed since the GAP trail opened in 1999. Much of the tunnel interior had cracked and spalled concrete walls and in some areas the roof had collapsed leaving large holes in the ceiling. In the fall of 2014, engineering consultants Gannett Fleming contacted Armtec for assistance to rehabilitate the 270m long concrete tunnel and eliminate the 2.5km detour around the failing structure.

A concrete box culvert located beneath Highway 11 near Shamrock Lake, about 31.5 km North of Nipigon was in critical condition. Constructed in 1938, the existing box culvert was quickly eroding and crumbling. Concrete patching and crack repair alone would not restore the integrity of the culvert and it was only a matter of time before the highway would require closing for repair. Located under 16.3m of cover and servicing a critical spawning habitat for Brook Trout, a trenchless solution was preferred over full replacement. Armtec proposed rehabilitation of the existing structure using Tunnel Liner Plate.

In late November, as the construction season was winding down, a large tender was called for the small municipality of Springdale in Central Newfoundland. The town's storm sewer system required the addition of 590m of 1,050m diameter pipe. The original specification called for High Density Polyethylene (HDPE) pipe. With limited supplies and a tight construction window, an alternative product was required.

A forty year old asphalt dipped galvanized Corrugated Steel Pipe (CSP) culvert near Atikokan, Ontario was identified for maintenance by the Ministry of Transportation Ontario (MTO). Once inspection began, it was discovered the culvert had collapsed and was in need of replacement. A new large diameter pipe was required, capable of delivering a 75 year Design Service Life (DSL) under challenging environmental conditions.

The South-East Peninsula Road is the main highway on the island of St. Kitts joining the capital city of Basseterre to the beaches of the south and the ferry dock to neighbouring Nevis. Sections of the road were built through the steep hills on the Peninsula. Along the Timothy Hill Road cut, just outside Basseterre, the hills were highly unstable and losing their rock faces to the salt and weathering of the Caribbean winds. Mudslides, large boulders and rock-fall threatened the safety of motorists and pedestrians travelling this route.

Expansion of the Vaughan City Hall western parking lot required additional stormwater storage. With land values at a premium, the city looked towards an underground storage solution. Armtec was contacted to present an alternative chamber product than that originally specified in the design. HydroStor was presented as the most cost-effective option able to meet the site performance requirements.