BS EN ISO 22282-4:2012 PDF Download

BS EN ISO 22282-4:2012 is a standard that sets out the requirements for conducting pumping tests as part of geotechnical investigations. These tests involve drawing down the groundwater level by pumping from a designated well, and measuring the pumped discharge and water levels in the well and surrounding piezometers over time. The standard applies to aquifers with sufficient permeability to allow for a noticeable change in the groundwater level within hours or days.

The purpose of these pumping tests is to evaluate various hydrodynamic parameters of the aquifer and well, such as permeability, pumping rate, radius of influence, drawdown response during pumping, skin effect, well storage, and recovery response after pumping. These parameters can provide valuable information for assessing the feasibility and effectiveness of pumping projects, and for understanding the behavior of aquifers and wells under different conditions.

BS EN ISO 22282-4:2012 is part of a series of standards that cover different types of geohydraulic testing. This includes tests for water permeability using open and closed systems, water pressure tests in rock, and infiltrometer tests. Each part of the standard provides specific guidelines and requirements for conducting the respective tests in accordance with EN 1997-1 and EN 1997-2.