RepairStructuralSHOTCRETE VS FIRE AND WATER REPLACEMENT OF FLUME 4/5/6 AND 30
Jason Myers
Read MoreOn August 14, 2021, the Caldor Fire started in Northern California near Pollock Pines, CA. The fire ended up consuming almost 222,000 acres (90,000 hectares) and seriously threatened South Lake Tahoe. Besides the over 1000 structures that were lost, the fire also burned along a
RepairEnhancing Efficiency and Safety in Concrete Shaft Restoration: A Shotcrete Success Story
Jacqueline Ipema
Read MoreIn September 2021, American Concrete Restorations Inc. was contracted to perform 60 yd³ (46 m³) of concrete repairs to an existing shaft that is used to access an underground tunnel system in a southern suburb of Chicago, IL. The job was for the Metropolitan Water
PoolRepairArchitecturalUndergroundStructuralInternationalRecreationalGeneralThe Jetcreter – The First Continuous-Feed, Dry-Mix Gun
Ted Sofis
Read MoreDuring the summer of 1970, on my 18th birthday, my father woke me up and told me they needed me on a job. I drove out that morning in July to the Crucible Specialty Steel plant in Midland, PA. It was my first experience working
PoolRepairRecreationalSobre Productividad, Cálculo de Costos de Trabajo y Éxito en el Shotcrete
Ryan Oakes
Read MoreComo miembro de la Sociedad de Honor Internacional en Economía y con una doble licenciatura en Finanzas y Banca, ingresé al mundo del shotcrete preparado de manera un poco diferente que la mayoría de los que ingresan a esta industria. Eso fue hace más de
RepairUndergroundStructuralAdvances in Shotcrete Technology for Ground Support in Tunnels and Mines in North America
Lihe (John) Zhang, Ph.D., P.Eng., F.ACI & Dudley (Rusty) Morgan, Ph.D., F.ACI
Read MoreIn recent years, shotcrete has been widely used for ground support in civil tunnels and mines in North America. Shotcrete technologies have advanced with robust robotic sprayers, high-performance shotcrete mixture designs, and high-performance fiber reinforcement in conjunction with rigorous qualification of shotcrete nozzlemen and QC
PoolRepairRecreationalOn Productivity, Job Costing, and Successful Shotcreting
Ryan Oakes
Read MoreAs a member of the International Honor Society in Economics and with a double BS in Finance and Banking, I came into the world of shotcrete prepared a little differently than most entrants to the field. That was over 20 years ago, but the principles
RepairStructural10 Ave SE Bridge Rehab
David Graham
Read MoreBRIDGE HISTORY Listed on the National Register of Historic Places in 1989, the 10th Avenue Bridge in Minneapolis features seven reinforced concrete arches to span the Mississippi River. The historic 1,141-ft (348 m) open spandrel column arch structure carries over 10,000 vehicles daily, as well as hundreds of pedestrians and cyclists between downtown Minneapolis and an area dominated by the University of Minnesota on the east bank.
RepairStructuralUMA to Break NCDOT Record for Largest Square Footage of Soil Nail Wall
Brian DeSpain, President, UMA Geotechnical Construction
Read MoreUMA is working as a geotechnical subcontractor to a Fluor-led joint venture (JV) with United Infrastructure Group, UMA to Break NCDOT Record for Largest Square Footage of Soil Nail Wall By Brian DeSpain, President, UMA Geotechnical Construction Inc. The project, formally known as NCDOT I-26 Exit 40 to I-40 Interstate Expansion Project, will help to alleviate traffic congestion and improve the safety and operational efficiency of this vital stretch of interstate in the Asheville area.
PoolRepairUMA Corrects Shotcrete Pool Settlement Issues with HDPR Injection
Brian M. Fraley
Read MoreU MA was contacted in January 2021 regarding a residential pool in Winston-Salem, North Carolina that was experiencing settlement issues in the shallow end. Prior to UMA’s involvement, Catawba Valley Engineering & Testing (CVET) conducted soil test borings at the property to determine the in-situ soil conditions.
RepairUndergroundStructuralSouth Wastewater Treatment Plant
Spencer Tuell
Read MoreI n early September of 2019, Gulf Coast Underground (GCU) received a call from the City of Baton Rouge and their construction manager, Jacobs Engineering Group (JEG). There was an issue at the South Wastewater Treatment Plant that would require a unique contractor skillset to properly repair. The problem was that the cast-in-place influent structures receiving 65 million gallons (246 ML) of sewer flow daily, were corroding and needed to be repaired quickly