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					                                                                                                                                        glass pack
G L A S S PA C K S



                               Safe glass packs                                                        SAFE                              products



                                                                                                                                        maintenance



     SKP SAFE – group of glass packs involving the
                                                                                                                                        phenomena
     glass packs produced using safe glass.

     Safe glass is laminated, tempered or reinforced glass.
                                                                                                                                          breaks
     When making design of windows and outside doors, the
     following should be taken into consideration:
         purpose of use of the building premises and intensity
                                                                                                                                          objects
     of activity of their users, i. e. number of persons who can
     access glazing in critical areas and their activity;                                  outside                  inside
         resistance of glass against strokes and way of
     breakage;                                                                                                                            quality
         measurement of glass in critical areas.
     Glass safety is described by classes of glass resistance
     to strokes and type of breakage.

Glass properties and classes defining glass properties in accordance with LST EN 12600:

                     Glass property                     Glass class          Remarks


    1                Resistance to stroke                    3, 2, 1         3 class glass – lowest resistance to strokes,
                                                                             1 class – highest resistance to strokes.

                                                             A               Glass breaks up into multiple different-sized sharp-
                                                                             edged pieces. This feature of glass breakage is
                                                                             typical of the ordinary glass hardened thermally and
                                                                             chemically.

    2                                                        B               Glass can crack or break, but glass pieces remain
                     Type of glass breakage                                  stuck to the film. This feature of glass breakage is
                                                                             typical of laminated glass covered with films and wire
                                                                             grid.

                                                             C               Glass breaks into multiple small pieces which are
                                                                             relatively harmless. This feature of glass breakage is
                                                                             typical of thermally hardened glass.



The use of safety glass in Lithuania is regulated by Technical Regulations for
Construction STR 2.05.20:2006 “Windows and outside doors”.




The following standards are used for classification of safety glass:
The following standards are used for classification of                       LST EN 356:2002. Construction glass. Protective
safety glass:                                                                window glass. Test of resistance against hand-stroke
LST EN 12600:2003. Construction glass. Pendulum                              and classification.
test. Method and classification of shock test for sheet                      Glass classified according to this standard show the
glass.                                                                       level of safety against break-in or fall. Only laminated
This standard defines resistance of glass against                            glass is classified as safe according to this standard
strokes and type of breakage. Classification is applied                      (see Table 2.1 and 2.2).
for laminated and tempered glass (see Table 1.1 and
1.2).




                                                                                                                                        products
                                                                                                                                           6
 GLASS CLASSIFICATION ACCORDING TO EN 12600 STANDARD

  Table 1.1.
  Marking of laminated glass according to the classification by standard LST EN 12600:2003.
                                                                                          Class
  PVB laminated    PVB film                            Glass thickness,                according to
    glass code  thickness, mm                                mm                         EN 12600
       33.1                           0.38                       6.4                        2(B)2
       44.1                           0.38                       8.4                        2(B)2
       55.1                           0.38                      10.4                        1(B)1
       33.2                           0.76                       6.8                        1(B)1
       44.2                           0.76                       8.8                        1(B)1
       44.4                           1.52                       9.5                        1(B)1
       44.6                           2.28                      10.3                        1(B)1
       55.2                           0.76                      10.8                        1(B)1
       66.2                           0.76                      12.8                        1(B)1
       88.2                           0.76                      16.8                        1(B)1
                                                                                                       Data based on technical information of glass suppliers.


  Table 1.2.
  Marking of tempered glass in accordance with the classification of standard LST EN 12600:2003.

    Thickness of tempered glass                        Class according to EN 12600

                      4 mm                                               1(C)2
                      6 mm                                               1(C)2
                      8 mm                                               1(C)2
                     10 mm                                               1(C)1
                     12 mm                                               1(C)1
                                                                                                       Data based on technical information of glass suppliers.




  GLASS CLASSIFICATION ACCORDING TO EN 356 STANDARD

  Table 2.1.
  Marking of safety glass according to the classification by standard LST EN 356:2002.

       PVB laminuoto                    Thickness,       Weight,           Class according to         Height ,           Number of
        stiklo kodas                      (mm)           (kg/m²)                EN 356                 (mm)               throws *
               33.1                           6.4           16                         -                 -                     -
               33.2                           6.8           16                        P1A              1500                    3
               44.1                           8.4           21                         -                 -                     -
               44.2                           8.8           21                        P2A              3000                    3
               33.4                           7.5           17                        P4A              9000                    3
               44.4                           9.5           22                        P4A              9000                    3
               44.6                          10.3           22                        P5A              9000                   3x3
               66.6                          13.5           32                        P5A              9000                   3x3
  * Test with steel ball of 4.1 kg.                                                                    Data based on technical information of glass suppliers.




  Table 2.1.
  Marking of safety glass according to EN 356
  Resistance against hand stroke (axe test).

   Class according to                  Resistant to            Thickness,               Weight,
        EN 356                         axe strokes               (mm)                   (kg/m²)
             P6B                         30-50                      :
                                                                 15 - 18                   :
                                                                                       33 - 42
             P7B                         51-70                    ~ 23                  ~ 53
             P8B                          >70                       :
                                                                 28 - 50                  :
                                                                                       63 - 115

  Structure and composition of the glass (P6B-P8B classes) resistant to axe strokes                    Data based on technical information of glass suppliers.
  depends on the manufacturer of glass.




UAB „Sabonio klubas ir partneriai“, Chemijos g. 29a, tel.: 8 (37) 750940, el. paštas: info@skp.lt                                           www.skp.lt