are not reusable. Compounds include wet applied or
semi-soft compounds such as sealant, putty, butyl,
hypalon, silicone, acrylic, polyurethane,
polysulfide, and preformed semi-solid tapes.
Although existing gaskets are readily identifiable,
determining the composition of existing compounds to
check compatibility with the film is more difficult
and could add expense to the project.
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The existing glazing compound, gaskets, and/or stops shall be removed as
required to expose the existing glass pane. If necessary, the glass shall
be removed so that the film can be applied. The film shall be applied so
that it extends edge to edge of the glass sheet. Existing gaskets and/or
stops shall be installed and any removed glazing compounds shall be
replaced with new glazing compounds. Removed glazing compounds shall be
scrapped and not reused. Glazing compounds shall be in accordance with
GANA Sealant Manual. Glazing methods shall be in accordance with GANA
Glazing Manual. When contact between the glazing compounds and/or gaskets
and the film occurs, the Contractor shall ensure compatibility. Any
damaged or broken glazing and gaskets shall be replaced and reinstalled in
kind.
3.2.3
Application to Existing Glass Without Dismantlement
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NOTE: Retain this paragraph for application where
dismantlement is not possible or is too expensive.
When exposed to the effects of explosives, films
that stop close to the frame but do not extend into
the bite tend to break along the weak edge and
disengage completely from the frame. Because the
disengaged film reinforced glass is held together as
a unit, protection is provided for building
occupants. This application is simplest and the
least costly. Also, coordination and compatibility
of the film with the compounds and gaskets is not
necessary because they do not contact. If the edges
of the existing glazing compounds are particularly
irregular, the designer may specify the film
application to be within a maximum of 5 mm (3/16
inch), although the 3 mm (1/8 inch) maximum is
recommended.
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Fragment retention film shall be applied so that it extends to within 1.6
mm 1/16 inch, with a maximum of [3] [5] mm [1/8] [3/16] inch, of the edge
of the visible glass area.
3.2.4
Application to Existing Glass and Frame Without Dismantlement
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NOTE: Retain this paragraph for application where
dismantlement is not possible or is too expensive.
Although this application has not been tested under
blast loads, several manufacturers recommend it. In
this application, the film is likely to contact the
existing gaskets and compounds. Trim or a batten
may be indicated on the drawings and/or added to
SECTION 08850
Page 10
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