Structural · S-HG7MG

Isolation Joint at Interior Columns

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An isolation joint filled with joint filler surrounds the concrete, steel, or wood column to isolate it from the surrounding floor slab. Diagonal reinforcing bars measuring 1-15Mx1200 (four feet zero inches) long are placed at the corners of the column blockout. Slabs less than 150 millimeters (six inches) thick receive one bar, while slabs greater than 150 millimeters thick receive one bar top and bottom. Contraction joints and isolation joints extend outward from the column corners at typical dimensions.

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