Construction

Purchasing Guidelines for Coarse Aggregate

‘Bazri’ is a very important part of RCC and concreting. The strength of the structure depends on the qualities of Bazri. When you take the supply of Bazri, you should ensure that the quality should be according to the specifications which can be obtained by the laboratory test.


Generally ‘Bazri’ should be of hard, tough dense stone or from river bed single pit gravel. It should be free from vegitable matter, other impurities, deleterious substances etc. 

Quality of Bajri
Generally you can judge the quality of ‘Bajri’ in the field as mentioned below.
1. Bazri should be free from lumps of earth, grass, decayed vegetation, silt and sand particle etc.
2. In some ‘Quarries’ there is Katcha stone in Bazri which generally has reddish or yellow reddish color. When you rub these Bazri particles, the particles are easily broken. This material is cheap in the market.
3. Bazri should be screened having minimum sand contents or fine material.
4. Bazri should be free from mixing with earth. This happens in rainy season when the Bajri gets mixed with earth or has slush coat on it.
5. You should be cautious as the supplier/truck owners have tendency to supply inferior quality or less quantity of the material.    


Loss in Material/Bajri:
The Loss in material may be in two ways which are mentioned below.
1. Lose in strength due to low quality material
2. Loss due to ignorance (Monetary Loss)

Lose in strength due to low quality material
The Supplier/Truck owner may supply Bazri below the specification such as Katcha stone Bazri, unscreened, mixed with earth, other impurities and slush coating. This type of Bazri is cheap at ‘Quarry’ site/source of supply. 
 
The strength of RCC may reduce by 10 to 30 % if the ‘Bajri’ below specification is used in construction.

Loss due to ignorance (Monetary Loss)
The following precautions should be used while procuring the material from the supplier. These may  help you save upto Rs.1000 or more per 1000 Cubic feet truck.

Precautions while Unloading Material:
Watch out for the sub standard material. Even if the supplier tells you that he has carried the best material you should check the quality using the guidelines above.  

Precautions while Purchasing Coarse Aggregate

a) About Rate: You should collect rates from around 3 to 4 suppliers. You should also collect the rates from few truck owners who stand their trucks full of material at the early hours of the day in every city/town. This exercise will not only help you get good quality material but will also help you figure out the prevailing rates.

 

 

b)  About Measurement (Wrong Calculation): The supplier or truck owner may try to used incorrect calculation method while calculating the final payment. For example if the measurement is 3 feet 6 Inches, he calculates the payment  by multiplying 3.6 to the rate where as he should have used 3.5.

Precautions for Measurement (Wrong Measurement):
The suppliers measure the height of the truck while calculating the material quantity being supplied.
a) You should measure the height of the truck from 2 to 3 places and then take an average
b) Never take the measurement of the material at the ground after unloading as this will distort the calcualtions and you will end up paying more money. 
d) Try to get the material in cash terms and make the payment after measuring the height, length and breadth. As the truck driver/owner usually charge less rates on cash payment but don't forget to get a bill.

Even though Bazri is cheaper compared to cement, it still is very important as far as the strength of the structure is concerned. Hopefully these guidelines will help you get the best out of your suppliers.  

;
Coarse Aggregate consists of crushed, uncrushed or broken stones. Check the grading of sand for proper sizes.
Kota stone flooring is a subtle blend of grandeur and luxury giving the interior and exterior a gorgeous look.......
To get maximum ventilation and natural light in your house, make sure the building is properly oriented. Orientation of building saves energy and provides comfortable living as well. This article tells you about various factors and benefits of building orientation.
Preview some of the most impressive pictures of kitchen from GharExpert Gallery.
A solid roof on building is very important for everybody living in the house. The roof should be constructed in a way that assures you great safety. Here are given details about different types of roofing.
Frames of doors and windows are most important parts of your doors and windows. They are available in different size, height, width and shapes. Frames hold locks and hinges and support door and windows to shut and open easily. Here is what you need to know about different doors and windows frames.
Different steel bars are recommended for their relative tensile stresses.Steel bars are major components of construction.Here is what you need to know about steel bars (Sariya).
Brahmasthan is a powerful zone of the house. It should have open space for flow of energy in the house. The positive energy is very useful for living beings of the occupants of the house.
Brick work is an important part of construction work done with the help of bricks and cement mortar. It is done with different quality of bricks with different ratios of cement mortar according to the requirement.
Living room or Drawing room should be located in east or north direction. The ideal location of a living room depends on plot facing.
Are you remodeling your bathroom? Bathroom shower doors make your bathroom a style icon. Read the following article that will help you select the bathroom shower door that will exactly suit your bathroom.
Without knowing perfect mixture of cement and sand you can not achieve your goal.
Manufacturing date, grade and type play vital role in purchasing right cement and there should be no lumps in it.
First Class Bricks must be homogeneous in texture without showing appreciable sign of efflorescence.
A coupler connects the two pipes to each other. If the material and size of the pipe are not the same,it is called a 'reducing coupler'.
Fine sand should consist of natural sand or crushed stone sand. It should be hard, durable, clean and be free from organic matter etc. and should not contain any appreciable amount of clay balls and harmful impurities such as alkalis, salts, coal, decayed vegetation etc.
Bricks provides several choices for quality. Select a type according to your need.
The beading is of plain variety with square edges.
Window Grills are required for the safety of homes. Window glasses should be well covered with grills. Here are various designs of grills which provide safety to window glasses.
Cracks can happen due to foundation movements and settlements of building, thermal movements, chemical reactions, elastic deformations and shrinkage etc. in buildings. They can damage plaster of walls, ceilings and destroy the beauty of the structure also. Let’s know their reasons in detail and get preventive measures.

Coarse Aggregate
Coarse Aggregate
Coarse Aggregate
Coarse Aggregate
Coarse Sand
Coarse Sand
Guidelines for Laying Cement Concrete Floor
Guidelines for Laying Cement Concrete Floor
Wardrobe design guideline
Wardrobe design guideline

Copyright 2007- GharExpert.com All rights reserved.