EN 952-1999 pdf download.Door leaves – General and local flatness – Measurement method.
Tins EN 952 can be applied to all rectangular door leaves.
The standard specifies the method to be used to measure the deviations in genera] and local flatness of door leaves.
In this standard the concept of local flatness deviation is limited to defects considered to be prejudicial to the appearance of the door leaL
2 Apparatus
2.1 Measurement equipment for general flatness A re1ieal1y mounted rigid frn’ine, on which is a(tache(l four reference paints forming a rectangular reference plane, appropriate to the size of door leaf to be tested.
A simighi r(f(’renee lx,,; capable of spanning the height of the door leaL
A dial or digital gauge, accurate to 0,01 inni, or feeler
gauges.
2.2 Measurentent equipment for local flatness
A (11(11 or (iigllal gauge, accLuate to 0,01 mm mounte(l
at the centre of a 200 mm long straight reference l)ar
NoTE for non—tahoratory testIng (e.g. on sik’) It IS acceplah1’ lo
use a 2(H) mm long straight relerr’nee bar ul(t leeler gauges.
3 Test specimens
Test specimens shall be stored and tested in a
non-destructive environment within the nuiges of 15 °C
to 30°C and 25 % to 75 % relative humidity.
4.2 General flatness measurement of bending With the door leaf mounted vertically, position the st might reference bar along the face of the (hx)r leaf, parallel to and not more than 20 mm in from one edge. MCaSLIIT’ the maximum deia1ion of (1w face of (lie door leaf from the reference bai to the nearest 0,1 nun. Repeat the procedure for the other edges of the door
4.3 Local flatness measurement
The door leaf is to be supported without restraint. With the 200 mm long reference bar and dial or digital gauge, measure any visually apparent deviations from local flatness on the face of the door leaf, to the nearest 0,05 flint.
Repeat the procedure for the other face of the door leaf.
NOTE 11w test may be carried out with the door leaf in the horizontal or vertical plane.
5 Expression of results
Record:
— the measured value of twist and maximum
deviations in bending for each edge of the door leaf;
— the position and measured value of any apparent
deviations in local flatness for each face of the door
leaf.
6 Test report
The test report shall contain the following infonriation:
a) reference to this standard;
b) all necessary details to identify the door leaf;EN 952-1999 pdf download.