Which type of drainage fittings correspond to rigid construction piping?

The correct choice refers to recessed drainage fittings, which are specifically designed to work with rigid construction piping systems. Rigid piping materials, such as PVC, cast iron, and copper, require fittings that can maintain structural integrity and provide secure connections without compromising the system's overall strength.

Recessed drainage fittings create a smooth transition for drainage flow, minimizing turbulence and potential clogs. They are designed to accommodate the inflexibility of rigid pipe materials, ensuring a tight fit and reliable performance over time. This is essential in maintaining the effectiveness of the drainage system.

Other types of drainage fittings, such as standard, modular, and flexible, serve different purposes or are meant for specific applications that may not align with the requirements of a rigid piping system. For instance, flexible drainage fittings allow for movement and bending, which would not be suitable for rigid piping. Therefore, understanding the compatibility of fittings with the type of piping used is crucial for proper plumbing installations.