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Chapter: Civil - Design Of Reinforced Concrete And Brick Masonry Structures- Design Of Brick Masonry

Design Of Brick Masonry: Uses, Advantages, Classification and Size

Used for, Advantages of brick masonry: Classification of bricks: [Based on shapes] Size of bricks: [As per IS1077]


DESIGN OF BRICK MASONRY


Brick

1)      Clay

2)      Calcium Silicate (Cement, FAL-G)



(Comp. strength 3.5 to 40 N/mm2)

 

Used for,

 

1. External and internal bearing walls

 

2. Load bearing piers and columns

 

3. Paritition walls

 

4. Brick masonry foundations

 

5. Floorings and Pavings

 

 

Advantages of brick masonry:

 

Attractive appearance, economical light weight, durable, strength, fire resistance, sound insulation, low thermal conductivity, minimum maintenance.

 

 

Classification of bricks: [Based on shapes]

 

1. Solid bricks -Perforations or holes not greater than 25% of volume

 

2. Perforated bricks -Perforation is greater than 25% of volume. Advantages:of perforated bricks are high thermal insulation and light weight. Water absorption should not be greater than 15% after 24 hours of insertion and compressive strength not less than 7N/mm2.

3. Hollow blocks -Holes greater than 20% and sizes of holes greater than 20mm.

 

4. Cellular bricks -Holes greater than 20% and closed at one end

 

5. Ornamental bricks -Bricks used in corbels, cornices, etc.

 

 

Size of bricks: [As per IS1077]

 

Standard size -19 x 9 x 9 cm

 

Modular brick -20 x 10 x 10 cm

 

 

 

The average compressive strength of brick unit as per IS3495 (Part I) -1976 is, 3.5 - 40N/mm2


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