PROJECT DESCRIPTION: The private 6,000 square-foot residential cave built outside of Springfield, Mo. proved extremely challenging due to limited ground support conditions. Baccus Caves, Brierley Associates & QUIKRETE ® collaborated to develop a unique two-step application of QUIKRETE ® MS – Fiber Reinforced Shotcrete to stabilize the structure. In the first phase, dry process shotcrete was applied about every two feet during the excavation to overcome the weak soil composition. In the second phase, four-inch by four-inch wire mesh was attached to the entire interior subterranean surface and wet mix shotcrete was spray-applied to create the final six-inch tunnel liner. All the shotcrete pumps were equipped with fast-switching rock valves for surge-free operations at the hos

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