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2013SumShotcreteEMag

Pool & Recreational Shotcrete Corner American Shotcrete Association’s Pool & Recreational Shotcrete Committee Position Statement #3 Sustainability of Shotcrete in the Pool Industry Quality pool construction allows no compromise on the quality of materials or installation procedures. Fortunately, quality pool design and construction can also enhance the sustainability of both the installation and the finished product. The American Shotcrete Association (ASA) is attentive to the global need to promote green practices in all areas of shotcrete application. The pool industry has a great opportunity to provide enhanced sustainability through use of shotcrete construction. The United States Green Concrete Council (USGCC) high- lighted the “Top Ten” sustainability benefits inherent with shotcrete in its publication The Sustainable Concrete Guide— Applications. The ASA Pool and Recreational Shotcrete Com- mittee confirms that eight of the 10 sustainability benefits directly apply to the creation of quality pool structures with shotcrete. The applicable sustainability benefits are: 1. Formwork savings of 50 to 100% over conventional cast-in-place construction. 2. Formwork does not have to be designed for Fig. 1: Lightweight, one-sided form is all that’s needed when internal pressures. using shotcrete 3. Complex shapes require very little—if any—formwork. 4. Labor savings of at least 50% in repair applications. 5. New construction speed savings of 33 to 50%. 6. Better bonding to the substrate enhances durability. 7. Adaptability to repair surfaces that are not cost-effective with other processes. 8. Ability to access restricted space and difficult-to-reach areas, including overhead and underground. Formwork savings of 50 to 100% over conventional cast-in-place construction Pool shotcrete placement uses earth forms, wood, or any other immovable type of substrate to create the basic pool shape. Because shotcrete is placed at a 90-degree angle within 2 to 6 ft (0.6 to 1.8 m) of the receiving surface, it requires an open- faced or one-sided form system. Shotcrete is self-supporting in its plastic state and thus only requires one-sided forms to provide shape. This 50% reduction in materials, when compared to double-sided needed by cast concrete, provides substantial cost reduction in the overall pool construction (refer to Fig. 1 Fig. 2: Pool shell is in place. Ready for the pool deck and 2). 56 Shotcrete • Summer 2013


2013SumShotcreteEMag
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