Social Sciences, asked by subhashchauhan697, 3 months ago

ez Why
ane
sedimentary sacks nat used for
Iconstruction?​

Answers

Answered by adwaithnambiar19
0

Answer:

Explanation: 1. In addition to the pond soil itself, you might use a range of different materials for the fish farm, for example for foundations, water supply and water control devices. The choice ranges from locally available materials such as bamboo and wood to bricks, cement blocks, concrete and plastics (for pipes), for which you may have to go to specialized dealers.

 

Selecting materials

2. The choice of construction materials essentially depends on their suitability, their local availability and the amount of money you are prepared to invest.

3. If you are a beginner fish farmer and your farm is very small, it is best to use simple structures and not to spend too much on materials. As you gain experience and wish to expand, your investments may increase, and more permanent, better structures may be built.

4. It you plan to build a large fish farm, you should select the most suitable permanent structures from the start.

 

     

 

Weight per unit volume of materials

5. The materials generally have to be transported to the construction site. To plan this properly and help estimate the cost of transport and handling, use Table 5, which gives the weight per unit volume (kg/m3) of common basic materials.

TABLE 5

Specific mass of various construction materials

Material

Specific mass (kg/m3)

Bamboo

Wood  

300-500

500-1100

Bricks

Cement blocks

Crushed bricks (for foundation)  

1500-1800

1500-2000

950-1250

Building stone, dry loose

Earth, dry loose

Earth, moist rammed

Gravel

Sand, dry to wet

Cement

Clay, dry compacted  

1400-1600

1300-1500

1750-1850

1300-1500

1450-2000

1250-1400

1400-1500

Cement concrete

Cement mortar

Reinforced concrete (5% steel)  

2100-2400

2000-2200

2600-2700

 

Reinforcement steel bars  

(see also Chart in Section 3.5)

Diameter (mm)

Weight (kg/m)

6

0.222

8

0.395

10

0.617

12

0.888

Note: for granular materials, these figures are bulk densities, i.e. including the pore space between the particles. The actual density is higher

3.1 Bamboo and wood

Special characteristics of bamboo

1. Bamboo is a wooden perennial grass that lives for an indefinite number of years. It grows fast, occurring naturally throughout the world, but particularly in tropical Asia. The Chinese bamboo or "yellow bamboo" (Bambusa vulgaris) has been introduced in several African and Latin American countries where it is now found widely at altitudes between sea level and 1500 m.

2. Lengths of bamboo wood, or culms, are cylindrical and divided at intervals by raised nodes from which the branches grow. At each node there is a partition wall that completely separates the cavity of one internode from the next. Culms are covered outside and inside by hard waxy cuticles that offer considerable resistance to the absorption of water, particularly when properly dried out. Bamboo is strongest at the age of three to four years. Because of its versatile characteristics, bamboo has numerous uses, for example as a construction material, for water pipes and for erosion control.

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