The phrase "additional drainage" is correct and usable in written English.
It can be used when referring to extra drainage systems or measures that are implemented to manage water flow or prevent flooding.
Example: "The construction project requires additional drainage to ensure that water does not accumulate on the site during heavy rainfall."
Alternatives: "extra drainage" or "supplementary drainage".
In order to reduce this seepage, two more additional drainage holes were drilled and grouted below the concrete invert.
"We also installed some additional drainage, so that if in the future heavy rain causes water to accumulate, it will collect in a pipe and be taken away from the slope," he said.
The additional drainage of biosynthetic precursors toward recombinant processes burdens severely the metabolism of cells that, ultimately, elicits a series of stress responses, reducing biomass growth and recombinant protein production.
If recharge to groundwater is greater than natural drainage, there is a need for additional drainage to avoid waterlogging.
In this case, the bile contaminated the entire abdominal cavity; thus, it has been found to be necessary to perform at least a lavage and an additional drainage to prevent the development of devastating systemic consequences of biliary peritonitis.
To avoid Harlequin syndrome, left ventricular output must be reduced by inserting an additional drainage cannula (into the right ventricle, pulmonary artery or left ventricle) or by converting peripheral VA ECMO into central VA ECMO [22].
Create extra drainage by drilling additional holes into the dolly through the holes in the bottom of the barrel – by aligning them you will have a direct drainage channels that should minimize pooling of water on the dolly.
In this scenario, parameters associated with the number of therapeutic procedures (the highest cost component) were altered from the base case: (1) conversion to surgery in the endoscopy group; (2) additional endoscopic drainage required in the endoscopy group and (3) additional surgical drainage required in the surgery group.
Because of worsening clinical status, he required additional percutaneous drainage of three more abscesses.
During the 79-month follow-up period of the trial, 3 5% (1/19) of the patients in the surgery group required additional surgical drainage.
During the 79-month follow-up period of the trial, 3 68% (13/19) of the patients in the endoscopy group required additional endoscopic drainage.
