ISO 13747 pdf download

ISO 13747 pdf download.Textile floor coverings — Determination of size, squareness and straightness of edge of tiles 1 Scope This International Standard specifies methods for the determination of size, squareness and straightness of edge of textile floor covering tiles and is applicable to tiles of all types of construction, maximum thickness 1 5 mm, and for all methods of installation, e.g. loose laid or adhered. 2 Normative reference The following normative document contains provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent edition of the normative document indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 1 39:1 973, Textiles — Standard atmospheres for conditioning and testing. 3 Principle Dimensions of the tiles are measured using apparatus such as micrometer gauges, and straightness of edge is determined using feeler gauges. 4 Apparatus 4.1 Rigid, durable, smooth and waterproof baseboard, e.g. of metal or marine plywood coated with a plastics laminate The base plate shall be of a size suitable to accommodate the test specimen. Two stop bars, approximately 25 mm wide and 1 5 mm high, are fitted at right angles along two adjacent sides with a gap of approximately 1 mm at the corner. On each of the two opposite sides, two cut-outs or slots are made approximately 20 mm wide and at least 20 mm long, to accommodate the presser feet of the dial gauge micrometers. The slots are positioned at 1 /3 and 2/3 of the nominal test specimen size (length of side) from the stop bars and are required to allow the presser feet to move ? 1 0 mm from the nominal size of the test specimen (see Figure 1 ). 4.2 Four dial gauge micrometers Each micrometer shall have a 20 mm diameter presser foot, a traverse of ? 20 mm and be capable of measuring to 0,1 mm with an operating force of between 0,5 N and 1 N. The gauges are mounted centrally within the cut-outs or slots with their axes in a horizontal plane and so that their centres are 5 mm...