I'm performing a shop drawing review of underground concrete storage tanks, to be used for firefighting.
We have six tanks arranged into two rows of three. 12-inch pipes connect the three tanks per row toegether, and one 12-inch pipe connects the two rows at one end.
It makes a U-shape flow path down one row, and back up the other.
Should two more linking pipes be added to form a complete grid, and allow more paths for water to flow?
Should these linking pipes be provided with vortex plates?
Thanks in advance!
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