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The joint design must consider the anticipated operational movement of each joint. Timing is also important, as freshly poured concrete shrinks particularly during the first few months of a new building, potentially causing joint size changes.
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Where vertical fire-resistance rated wall assemblies meet the underside of the floor slab above, a movement joint results, which can be subject to compression, as the freshly placed
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elements meet without applying a static load from one element to another. When one or more of these vertical or horizontal elements that meet are required by the local
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cures and shrinks all over a new building. This joint must be firestopped in a flexible manner.
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must be able to demonstrate the ability to withstand operational movement prior to
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Junction where building elements meet without applying loads to one another
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HOW Joint with uneven silicone caulking thickness. Status: inoperable.
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UL2079 Scope: Tests for Fire
Resistance of Building Joint Systems
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UL 2079 -- Tests for Fire
Resistance of Building Joint Systems
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140:. Firestops for such building joints can be qualified to
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HOW joint penetrated by both mechanical and electrical
106:"HOW" (Head Of Wall) Building Joint with incomplete
55:Perimeter slab edge building joint with incomplete
243:"Cement Association of Canada - Drying Shrinkage"
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132:Such joints are often subject to movement.
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63:floor and precast concrete facade.
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83:insulation in point contact with
39:in order to restore the required
277:UL HW-S-0055: A common condition
272:UL treatise on building joints
245:. Cement Association of Canada
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47:Qualification requirements
297:Passive fire protection
198:Passive fire protection
213:Packing (firestopping)
203:Active fire protection
178:Penetration (firestop)
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33:fire-resistance rating
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292:Building engineering
98:without topcaulking.
90:backban. Incomplete
41:compartmentalisation
23:is a junction where
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29:building code
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247:. Retrieved
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223:Articulation
208:Mineral wool
193:Curtain wall
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138:fire testing
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88:curtain wall
79:Combustible
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85:sheet metal
81:Polystyrene
37:firestopped
286:Categories
249:2008-05-05
229:References
126:penetrants
59:, between
31:to have a
302:Firestops
134:Firestops
188:Firestop
173:Concrete
167:See also
161:concrete
112:rockwool
110:made of
108:firestop
96:rockwool
94:made of
92:firestop
61:concrete
57:firestop
25:building
183:Sealant
115:packing
288::
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128:,
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19:A
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