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*Incorrect sequencing – install overflow drain prior to backfilling with granular material and engineered soil
*Incorrect sequencing – install overflow drain prior to backfilling with granular material and engineered soil
*Incorrect grate material – avoid using plastic overflow grates due to breakages and UV degradation
*Incorrect grate material – avoid using plastic overflow grates due to breakages and UV degradation
<gallery mode="packed" widths=300px heights=300px>
overflow-pipe-install.jpg | Overflow pipe installed to underdrain T-connection.
overflow-plastic-cap.jpg | Overflow installed with a plastic cap. Note that the use of plastic grates is discouraged.
</gallery>