EN 13915:2007 – Prefabricated gypsum plasterboard panels with a cellular paperboard core – Definitions, requirements and test methods

5.2 Dimensional measurements
5.2.1 Width
5.2.1.1 Principle
The distance between the extremities of the shorter linear dimension of the panel facing shall be measured.
5.2.1.2 Apparatus
A metal rule or a metal tape permitting readings to 1 mm.
5.2.1.3 Procedure
Take two measurements to the nearest 1 mm on each facing of each panel (see Figure 3 a)).
5.2.1.4 Expression of results
The width of each panel is determined by the average of the four measurements expressed in millimetres.
5.2.2 Length
5.2.2.1 Principle
The distance between the ends of the longer linear dimension of the panel facing shall be measured on each face.
5.2.2.2 Apparatus
A metal rule or a metal tape permitting readings to 1 mm.
5.2.2.3 Procedure
Take two measurements to the nearest 1 mm on each facing of each panel (see Figure 3 b)).
5.2.2.4 Expression of results
The length of each panel is determined by the average of the four measurements expressed in millimetres.
5.2.3 Thickness
5.2.3.1 Principle
The distance between the two faces of the panel shall be measured.
5.2.3.2 Apparatus
A calliper with an anvil diameter not less than 10 mm, permitting readings to 0,1 mm.
5.2.3.3 Procedure
Take six measurements to the nearest 0,1 mm across one end equally spaced across the width and not less than 25 mm from an end or 100 m from an edge (see Figure 3 c)) for each panel.
5.3 Determination of alignment
5.3.1 Principle
The distance between the edges of the gypsum plasterboards shall be measured.
5.3.2 Apparatus
a) flat surface;
b) metal rule or a metal tape permitting readings to 1 mm.
5.3.3 Procedure
Lay the panel on a flat surface. Measure the distance between the edges of the gypsum plasterboards as shown in Figure 4. Turn over the panel when necessary (8 measurements in total).
EN 13915:2007 – Prefabricated gypsum plasterboard panels with a cellular paperboard core – Definitions, requirements and test methods