The Constructor

Construction of Concrete Chimney Crown

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Chimney crown, also termed as chimney cap or chimney top plate is a cover provided on the top of chimney chase to prevent the entrance of rainwater into the chimney. Construction procedure of chimney crowns made of concrete is discussed below.

BIA Recommendations

Before knowing about the construction procedure of chimney crown, it is important to know about the recommendations issued by BIA (Brick Institute of America) in the construction of chimney crown.

Construction of Concrete Chimney Crown

Concrete chimney crowns are available in two types :

  1. Cast-in-place Concrete Chimney Crown
  2. Precast Concrete Chimney Crown

Cast-in-place chimney crowns are suitable for large chimneys while precast concrete crowns are suitable for smaller jobs. Precast crowns can be casted in larger sizes but it is difficult to lift the large crown parts to greater heights.

Construction procedures of both cast-in-place concrete chimney crown and precast concrete chimney crown are described below.

1. Construction of Cast-in-place Concrete Chimney Crown

Fig 2: Form for Chimney Crown
Fig 3: Reinforcement for Chimney Crown
Fig 4: Pouring Concrete
Fig 5: Cast-in-place Concrete Chimney Crown

2. Construction of Precast Concrete Chimney Crown

Fig 6: Precast Concrete Chimney Crown
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