312338 BMC Manual Practical No 4 Record dimensions of given bricks answers
 |
| 312338 BMC Manual Practical No 4 |
Practical Significance-
Recording the dimensions of given bricks has practical outcomes that include efficient material usage, improved quality control, precise construction planning, adherence to standards, and enhanced precision in masonry work. These factors collectively contribute to the success and reliability of construction projects.
Relevant Theoretical Background
A brick is building material used to construct walls, pavements and other elements in masonry construction
There are Two Main Types of Bricks.
1. Traditional Bricks- The commonly adopted nominal size of traditional brick is 23cm x
11.4cm x 7.6cm. The length varies from 20 to 25 cm.
2. Modular Bricks- The actual size of the brick is 19 cm x 9cm x 9cm. Masonry modular
bricks are economical to manufacture, require less area for drying, and staking, and require less brick work for the same surface area of the wall in comparison to conventional bricks. Modular brick is also classified as a) Unburnt Bricks b) Burnt Bricks.
Procedure
1. The teacher should explain the detailed information about bricks.
2. Select five bricks at random.
3. Students should observe the brick sample available in the laboratory.
4. Their size, shape, and color.
5. Find the properties of brick.
Observation Table
|
Type of Brick |
Size (mm) |
Color |
Physical Properties |
|
First Class Burnt Clay Bricks |
190 x 90 x 90 or 190 x 90 x 40 |
Deep Red |
High strength and durability Low porosity and water absorption Well-defined shape and sharp edges Good fire resistance |
|
Second Class Burnt Clay Bricks |
190 x 90 x 90 or 190 x 90 x 40 |
Light Red |
Moderate strength and durability Slightly higher water absorption and porosity compared to first-class bricks May have slight irregularities in shape |
|
Fly Ash Bricks |
190 x 90 x 90 |
Grayish |
Lightweight Good thermal insulation properties Uniform shape and size Environmentally friendly (made with fly ash byproduct) |
|
Concrete Bricks |
190 x 90 x 90 |
Gray |
Strong and durable Good sound insulation properties It can be produced in various colors and shapes May be heavier than clay bricks |
Result
The diversity of properties and benefits provided by various types of Indian bricks is highlighted in this comparison, enabling informed selection according to specific project needs.
Interpretation of results
In general, the table highlights how crucial it is to select the right kind of brick for a construction project, taking into account factors such as strength, insulation, weight, appearance, and environmental considerations.
Practical Related Questions
1. Define Brick.
Answer:
A brick is a construction material that is utilized for constructing walls, pavements, and other components in masonry construction. Originally, the term brick specifically refers to a unit made mainly of clay, but it is now commonly used to refer to units made of different materials or chemically cured construction blocks.
2. State the importance of Bricks in Civil Engineering.
Answer :
1. Durability and Strength:
Bricks are well-known for their exceptional durability and strength, as they can withstand weathering, corrosion, and high temperatures effectively. This quality makes them perfect for constructing structures that can endure for a long time. The enduring nature of bricks significantly reduces the necessity for frequent repairs and replacements, thereby lowering maintenance costs throughout the building's lifespan.
2. Fire Resistance:
Bricks, being non-combustible, provide excellent fire resistance by not contributing to the spread of fire and being able to withstand high temperatures. They offer a crucial layer of protection for occupants and interior elements in the event of a fire.
3. Versatility and Aesthetics:
Bricks are available in a range of shapes, sizes, and colors, providing aesthetic versatility for architects and designers. This enables the development of a wide variety of architectural styles and visually pleasing buildings. Furthermore, brickwork can be used in both structural and non-structural components, enhancing their adaptability in construction endeavors.
4. Sustainability:
Bricks promote environmental friendliness through their utilization of natural materials such as clay. They are commonly obtained from local sources, thereby minimizing transportation expenses and environmental effects. Furthermore, clay bricks possess the ability to be recycled and repurposed in construction endeavors.
5. Ease of Construction:
Bricks are relatively easy to work with and can be readily used by skilled masons. Their standardized size and modular nature facilitate efficient construction processes.
3. State four physical properties of Bricks.
Answer:
1. Hardness
The durability and longevity of bricks are determined by their hardness; bricks that have high hardness are more enduring and have a longer lifespan.
2. Compressive strength
This refers to the capability of bricks to withstand compression, which is a significant aspect in assessing the load-carrying potential of a wall. A compressive strength test is conducted on bricks to evaluate their resistance to compression.
3. Absorption
The ability of bricks to absorb water is what absorption refers to. Bricks that have lower absorption rates are more appropriate for construction purposes because they are less prone to cracking or weakening when in contact with water.
4. Thermal conductivity
The ability of bricks to conduct heat is determined by their thermal conductivity. Bricks that have a low thermal conductivity are more suitable for insulation purposes as they can assist in maintaining a stable temperature within a structure.
4. Explain Types of Bricks.
Answer:
1. Sun-dried bricks
These bricks are created by molding wet clay mixed with straw or other fibers, and then letting them dry in the sun. Although sun-dried bricks are not as sturdy and long-lasting as fired bricks, they are more cost-effective to manufacture and are frequently utilized for temporary buildings.
2. Burnt clay bricks
These bricks are strong, durable, and available in various sizes, shapes, and colors. They are made by molding wet clay and then firing it in a kiln at high temperatures. Burnt clay bricks are four different types of bricks that are commonly used for construction purposes, especially in areas where clay is abundant. Here are some of its different types:
- 1) First class bricks :
These items are of superior quality and possess a consistent size, shape, and color. They feature sharp edges, lack any cracks or imperfections, and emit a distinct resonating sound upon impact. First-rate bricks are commonly utilized in structures that bear weight and in visible walls.
- 2) Second class bricks :
These bricks are similar to first-class ones, but they may have slight imperfections like irregular shapes, sizes, or colors. They are still appropriate for load-bearing walls, but they should not be used for visible walls.
- 3) Third class bricks :
These objects are highly irregular in their shape, size, and color, and they exhibit significant cracks, distortions, and other defects. Consequently, they are not appropriate for supporting structures and are typically employed for non-structural applications like garden walls or landscaping.
- 4) Fourth class bricks :
These materials are either over-burnt or under-burnt, resulting in poor quality. They are not suitable for use in construction due to potential cracks, distortions, and other defects..
3. Fly ash bricks
These are created by combining fly ash (a byproduct of coal-fired power plants), cement, and water, before compacting the mixture into molds. They offer a cost-efficient and environmentally friendly option to traditional clay bricks and are frequently utilized in supporting structures.
4. Concrete bricks
Bricks are created by blending cement, sand, and water, pouring the mixture into molds, and allowing it to harden. Known for their strength, durability, and ability to withstand fire and weathering, these bricks are often utilized in load-bearing constructions and as paving materials.
5. Engineering bricks
These bricks are specifically designed for structural use and are manufactured from high-quality clay. They undergo a high-temperature firing process, resulting in their strength, density, and resistance to water and chemicals. This type of brick is frequently utilized in locations where heavy loads are expected or water resistance is necessary.
6. Calcium silicate bricks
These materials, made from sand and lime, are renowned for their strength, durability, and fire resistance. They are lightweight and possess excellent insulation qualities, making them ideal for high-rise structures or locations where thermal insulation is crucial.
7. Eco bricks
Bricks of this kind are manufactured using recycled materials like plastic bottles, paper, and other waste products. They serve as an environmentally friendly substitute for conventional bricks and are increasing in popularity because of their sustainability. Typically, they are utilized for non-structural functions such as garden walls, landscaping, or decorative elements.
5. What is first-class brick?
Answer:
The items are of excellent quality and display consistency in their size, shape, and color. They possess sharp edges, lack any cracks or imperfections, and emit a distinct ringing sound upon impact. Top-grade bricks are commonly employed in structures that bear weight and in visible walls.
6. Which type of brick is used for decorative purposes.
Answer:
Sun-dried bricks
These types of bricks, also known as unburnt bricks, are primarily used for decorative purposes due to their low strength. They are created by molding and drying clay under direct sunlight.