EN 1024-2012 pdf download.Clay roofing tiles for discontinuous laying-Determination of geometric characteristics.
This EN 1024 specifies the methods for determining the geometric characteristics of clay tiles as def,ned in EN 1304, Clay roofing tiles and fittings — Product definitions and specifications.
2 Normative references
The following documents, In whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 1304. Clay tiles and fittings — Product definitions and specifications
3 Symbols
L1 maximum aistance when measunng covering dimensions (length) in millimetres mmj;
L2 minimum distance when measuring covering dimensions (length) in millimetres (mm):
11 maximum distance when measuring covering dimensions (width) in millimetres (mm);
‘2 minimum distance when measuring covering dimensions (width) in millimetres (mm);
L mean cover length in millimetres (mm);
LM maximum cover length in millimetres (mm);
I mean cover width in millimetres (mm);
‘N maximum cover width in millimetres (mm);
11 difference in height from the measuring point at the support bar or height in relation to a reference plane in mIllimetres (mm);
C twist coefficient in percent;
.4 tile length as declared by the manufacturer in millimetres (mm);
B tile width as declared by the manufacturer in millimetres (mm);
hd height of camber as declared by the manufacturer in millimetres (mm);
m measured height of camber in millimetres (mm);
R camber in percentage;
Ah I hm hd absolute value in millimetres (mm):
L total length of the tile in millimetres (mm):
‘T total width of the tile in millimetres (mm);
LA measurement base in longitudinal direction In millimetres (mm):
LB measurement base in transverse direction in millimetres (mm);
E1 distance between the internal edges of an over – and under- tile at one of its extremities in millimetres (mm);
E2 distance between the internal edges of an over – and under- tile at the other extremity in millimetres (mm).
EN 1024:2012 (E)
4 Test pieces
The measurement of geometric characteristics are carried out on 10 test pieces, each of which constitutes a whde tile, except for the measurement of cover dimensions, which requires 24 tiles.
5 Tests methods
5.1 Determination of dimensional characteristics
5.1.1 Individual dimensions1)
5.1.1.1 Apparatus
The tests are made with a measuring apparatus with a precision of at least one millimetre.
5.1.1.2 Procedure
5.1.2.4 Procedure
The tiles are laid upside down in two rows on a flat surface, and interlocked with one another so as to form a stable unit. Certain types of tiles may require laying the right way up.
The tiles are interlocked longitudinally and pulled apart individually to measure the maximum distance between two corresponding points on the first and the eleventh tile, i.e. L1, the maximum length.
Following this, the tiles are taken up, then relaid and interlocked. They are pushed together individually as closely as possible to carry out the measurement of the minimum distance (L2) following the procedure described above.
Take again the same measurements, but this time, transversely in order to obtain the values I and ‘2’
With regard to tiles with a variable overlap, determine only the measurement of cover in the open position. L1 (longitudinally), 11 ransversely).
NOTE This method is not relevant to some types of tiles designed to be laid broken jointed
5.1.2.5 Expression of results
The mean cover length (L) is obtained from the following formula:
L(L1+L2)/20 (1)
The maximum cover length (LM) (tiles with a variable overlap) is obtained from the following formuLa:
LL1I1O (2)
The mean cover width (1) is calculated from the following formula:
I=(11+12)120 (3)
The maximum cover width (‘a) (of tiles with a variable overlap) is calculated from the following formula:
lM=i1’1O (4)
The calculated values as recorded are rounded to the nearest whole millimetre.
The percentage difference of these cover dimensions compared with those declared by the manufacturer are calculated and stated in the test report.EN 1024-2012 pdf download.