Service reservoir floor design typically follows two main approaches:
Movement Joints: In this method, movement joints are strategically incorporated into each floor panel, allowing for unrestricted expansion and contraction. Each panel functions independently, separated by a sliding layer that facilitates smooth movement. This approach effectively mitigates the risks associated with thermal and shrinkage stresses, preventing the formation of large cracks that could compromise the reservoir’s watertightness.
Controlled Cracking: This alternative approach does not rely on movement joints. Instead, it anticipates the occurrence of cracks due to seasonal and shrinkage movements. However, these cracks are designed to be numerous and minuscule, distributed across the floor surface. Their small size prevents them from initiating corrosion or leakage, ensuring the reservoir’s functionality. While this method eliminates the need for movement joints, it requires a significantly higher amount of reinforcement to control crack width and maintain structural integrity.
The choice between these two approaches depends on various factors, such as the reservoir’s size, structural design, and specific operational requirements. Each method offers distinct advantages and disadvantages, requiring careful consideration to determine the most suitable solution for a given project.
Ultimately, both approaches aim to address the challenges posed by concrete’s inherent tendency to shrink and expand. By managing these movements effectively, engineers can design durable and reliable service reservoirs that meet stringent performance standards.