|
24
Hour Emergency Service 08000 724 824
Safety Glass
Safety
for Glazed Walls, Doors, Side Panels, Windows and screens.
1. Critical Safety
Areas.
The areas of internal and external walls which are considered
‘critical locations’ in terms of safety are:
A.
Between the finished floor level and 1500mm above that level in
doors, and in side panels which are within 300mm of either edge of
the door.
B.
Between the finished floor level 800mm above that level in the case
of walls, partitions and windows.
2.
Requirements of BS 6262 Part.
A.
Safe Breakage: For doors and door side panels, the glazing used
should not break, or should break safely in accordance with Class C
of the standard impact test BS 6206(1981) if 900mm wide or less, or
Class B if wider than 900mm.
For other low level glazing the pane should comply with at least
BS 6206 Class C.Use laminated or toughened glass, or plastics
glazing sheet, or wired glass, that meet BS6206, or glass with
plastic film applied so the pane of glass with film meets BS6206.
For unbacked mirror glazing accessible to impact from one side
only, the pane should comply with BS 6206 Class C0 if equal to or
less than 900mm wide or Class B0 if wider than 900mm.Unbacked
glazing either has no backing behind which does not retain its
integrity or is cracked or broken when tested as described in BS
7449 (1991): Appendix A.If the mirror glazing is fully backed by a
solid material, like a wall or timber wardrobe door and it is
securely fixed so that there is space of no more than 25mm between
the mirror and the backing material, then a glass which does not
comply with BS 6206 may be used
B
.Small Panes: Ordinary
annealed glass may be used in small panes up to a maximum width of
250mm and an area not exceeding 0.5m2. Such glass must no
be less than 6mm in thickness, expect in the case of traditional
lead lights and copper lights, where 4mm can be used.
C.
Robustness: Robustness refers to the strength of the glazing forming
fronts to non-domestic buildings such as shops, showrooms, offices,
factories and public buildings.Some glazing, such as polycarbonate,
is inherently strong. Annealed glass, that does not normally comply
with BS 6206, can gain robustness with increased thickness. Annealed
glass may only be used in critical locations, therefore, when the
nominal thickness and dimensions are as listed in the table below.
Nominal Thickness (mm)
Max pane Size Dimensions( mm)
8
1100 x 1100
10
2250 x 2250
12
3000 x 4500
15
or thicker
No Limits
SAFETY GLASS
Laminated Safety Glass is the only glass
combining both safety and security properties. It consists of 2 or
more sheets of ordinary glass, sandwiched together by a PVB
(polyvinyl butyral) interlayer. Should the glass be broken, the
shards will remain adhered to the interlayer, reducing damage to
both property and people. Recommended for areas which are subject to
Regulation 14 and document N.
TOUGHENED GLASS
Toughened glass is 5 times stronger than
annealed glass. If attacked it will disintegrate into small pieces
with dulled edges, thus reducing the risk of injury. Toughened glass
is cut to size before the heat treatment process.
TOUGHENED GLASS
ASSEMBLIES
Frameless all glass entrances, including side
apnels and transoms, allows freedom to create many design options. A
comprehensive range of rails and patch fittings are available in a
variety of finishes, including anodised and powder coated. Available
in 10mm or 12mm.
RECOMENDATIONS FOR
INSTALLING LAMINATED GLASS IN SHOP FRONTS - THICKNESS CONFIGURATION
BRITISH STANDARD REACHED
7.5mm (3PLY) 3mm g x 1.52mm pvb x 3mm g Safety and security glass
BS5544 - Anti-bandit glazing
8.8mm (3PLY) 4mm g x 0.76mm pvb x 4mm g Safety and security glass
BS6206 - Class A
9.5mm (3PLY) 4mm g x 1.52mm pvb x 4mm g Safety and security glass
BS5544 - Anti-bandit glazing
10.8mm (3PLY) 5mm g x 0.76mm pvb x 5mm g Safety and security
glass BS6206 - Class A
11.5mm (3PLY) 5mm g x 1.52mm pvb x 5mm g Safety and security
glass BS5544 - Anti-bandit glazing
From 23mm (multi-ply) on application BS 5051 - Bullet resistant
glazing
FIRE RESISTANT GLASS
Integrity glasses provide a specific resistance to the passage of
smoke and fumes, though they will permit the transmission of heat
radiation from a fire. This range of fire retardant glass is produce
by changing the raw material composition, by laminating or
specialised modifications of toughened glass. Wired glass provides
inherent fire-resistant properties.
Insulated plasses are generally made up of multi layers of glass
and clear intumescent inter-layers. When subjected to heat above 120
degrees centigrade, the inter-layers expand forming a white foam. It
is this foam that provides the glass with insulating properties,
preventing heat transmission.
Talk to Surbiton
Glazing Ltd today for a great value quote for
all your safety glass requirements. Click here
to phone, fax or email us.
|
