The correct use of rigid waterproof casing

Rigid waterproof casing is generally used in areas not fortified by earthquakes, and when it is necessary to use extended rigid waterproof casing in fortified areas, a flexible joint should be set up at the pipeline near the structure, in order to relieve the mutual force between the structure and the pipeline during earthquakes. Rigid waterproof casing is often used in the installation of pipelines, and is favored by construction projects, is more environmentally friendly, and is also easy to maintain the pipe from being damaged, with a long time and other advantages.
 
The structure of the rigid waterproof casing directly constrains the scale of application of the rigid casing, because its structure is simple, easy process, and it can play the corresponding part of the function of the messy flexible waterproof casing. Cost-effectiveness can also be, so in the local requirements are not high, the choice of rigid is still quite cost-effective. Rigid waterproof casing for external walls do not accept the deformation caused by elastic oscillation of the pipe through the wall.