It is proposed a method for rigidity calculating of reinforced concrete structures in the presence of cracks. suitable for rod and flat-strained concrete composite structures. It is based on the operating conditions and includes a new. more complete classification of the various cracks. https://www.ngetikin.com/flash-choice-1-Gallon-Roll-Cote-High-Performance-Moisture-Vapor-Barrier-Coating-and-Primer-limited-super/