StructuralUMA Delivers Aesthetic Permanent Sculpted Shotcrete Walls
Brian DeSpain
Read MoreUMA Geotechnical Construction Inc. (UMA) typically finishes off the soil nail walls it constructs with a standard shotcrete finish. But sometimes the owner wants a more artistic approach.
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.
StructuralGeneralMass Shotcrete Wall Construction and Thermal Control Plan
Lihe Zhang, Dudley R. Morgan, lain Kirk, Anastasia Rolland, and Robert Karchewski
Read MoreWet-mix shotcrete has been used more and more for structural applications in the past few decades. Recently, wetmix shotcrete was successfully used to construct a mass structural wall with congested reinforcement and minimum dimensions of 1. 0 m in a sewage treatment plant.
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
RepairStructuralDavis Barracks Sculpted Wall
Jeff Bacon
Read MoreIn 2015, the U.S. Army Corps of Engineering began construction on the Davis Barracks at West Point, NY. The 172 million dollar barracks became a state-of-the-art facility. The new barracks was built to house 650 cadets, three in each room, consisting of 297,392 ft2 (27,629 m2). The barracks building is located on the side of a mountain, below the cadet chapel, which in of itself is a famous landmark. The site for the barracks posed numerous challenges which included the removal of 285,000 tons (259,000 metric tons) of granite for the building’s foundation. Between 2015 and 2017, during the construction, over
RepairStructuralGeneralY Not Try a Double Nozzle System
Derek Pay
Read MoreAlthough many shotcrete workers “claim” to be capable of placing massive amounts of concrete in a daily shift, or shooting with the pump turned “wide open,” in reality, the nozzleman tends to ultimately be the limiting factor on production speed and daily placement volume. Plain and simple they get tired. Shooting too fast diminishes accuracy and overall quality.
RepairArchitecturalUndergroundStructuralGeneralShotcrete Incorporated into ACI 318-19 Building Code
Charles Hanskat, Terence C. Holland, and Bruce A. Suprenant
Read MoreSince the shotcrete process originated well over 100 years ago, improvements in materials, equipment, and placement techniques have enabled it to become a well-proven method for structural concrete placement. The efficiency and flexibility of shotcrete have been used to great advantage in sizable structural projects, as
RepairStructuralFalls Village Penstock #1 Structural Shotcrete Rehabilitation Project
Billy Roy and Andrew Lawson
Read MoreIn early November of 2018, Knowles Industrial Services Corporation (KISC) was issued a contract by First Light Power Resources, Inc. (FLP) to perform a structural shotcrete liner within a steel-riveted penstock at the Falls Village Hydro Electric Plant in Canaan, CT. FLP’s request for bids
StructuralShotcrete in the Urban Jungle
Jason Myers
Read MoreIn today’s complex urban jobsite, easy sites to build on are diminishing, while available sites are becoming harder to reach. In addition, the remaining sites often require creative solutions to develop. The project 1395 22nd St. is a complex of five apartment buildings built into
ArchitecturalStructuralRecreationalAcademy Museum of Motion Pictures
Lawrence Klein
Read MoreThe uniqueness of the David Geffen Theater and the May Company building, the Saban Building, dates back to 1939.