Head of Wall
Concrete to Concrete
Floor to Wall
Concrete to Concrete
Head of Wall
Gypsum to Fluted Deck
Wall to Wall
Concrete to Concrete
Floor to Floor
Concrete to Concrete
(Fig 4.3 Typical Joint Types )
Firestop Joints are used with the intention to join individual structural
elements to accommodate movements, dimensional tolerances,
inadequate designs and to avoid constrictions in the building.
Examples of such cases could be the profile of the structure which
gets formed after creepage & shrinkage of concrete. And then
there are additional inherent environmental factors at play such as
humidity, temperature changes, wind, seismic forces, etc.
While deciding the fire-resistance rating of the firestop joint systems,
it is very important to consider movement forces. It is important that
these joints along with their fire resistance rating also accommodate
movement so that any shrinkage, creep or any external factor forces
can be absorbed without damaging any structural component.
While joints can occur in a variety of locations and assemblies (see
Figures 4.4 and 4.5), it is good to have an example in mind prior to
looking into the specific requirements. Perhaps one of the easiest
examples is a joint in an exterior wall constructed using pre-cast tilt-
up concrete wall panels.
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