The construction technology of an RCC arch dam is very similar to that of an RCC gravity dam. The main differences between them are the temperature control and design of joints. There are no transverse joints but only some crack inducers in the first three RCC arch dams constructed in the world. In 1992, the author pointed out that transverse joints and temperature control are necessary to an RCC arch dam, with the exception of smaller dams which can be constructed in winter months [6]. Thereafter, transverse joints and temperature control were adopted in RCC arch dams in China. The method for computing temperature loads, control of thermal stresses and the principles for design of joints for RCC arch dams are given in this paper.
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