DANSK DSF/ISO/DIS 4981 PDF

This document gives the definitions and specifies the minimum requirements for injection moulded, extruded, compression moulded and thermoformed thermoplastics cuboid shaped boxes, including integral components, used in underground systems for storage, transportation, detention and retention of non-potable water (e.g. storm water) and manufactured from polyethylene (PE), polypropylene (PP) or unplasticized polyvinylchloride (PVC-U). These boxes are intended for buried underground use, e.g. in landscape, pedestrian or vehicular traffic areas. In the case of detention and retention systems, the main purpose of the boxes is to retain water, for later infiltration in the ground or for later use in non-potable applications (irrigation, cleaning, sanitary facilities, etc), or to retain water during a storm, transferring it in a controlled way to the public storm water network. Applications include commercial, residential, agricultural, and highway drainage, including installation under parking lots and roadways. Product properties are determined by a combination of material specifications, design and manufacturing process. A box can either be factory assembled or site assembled from different components. These boxes are intended to be used as elements in a modular system where the manufacturer has clearly stated in the documentation how the components are assembled to create a complete storage, transportation, detention or retention system. They are installed as one or more horizontal layers on a firm foundation and embedded with fill around and above the complete system. NOTE 1 – Non load bearing component(s) can be manufactured by various methods e.g. extrusion, injection moulding, rotational moulding, compression moulded, thermoforming and low-pressure injection moulding and are not part of this standard.