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The following are the good properties of brick which helps in building and maintaining the structure safe for longer period

  1. Colour of the brick should be uniform
  2. The faces of brick should be plane and should have sharp and right-angled corners.
  3. Size of the brick should as per the standards (codes) of the country.
  4. The texture of the brick should be fine, dense and uniform.
  5. When we struck two bricks it should produce a metallic sound.
  6. When scratched with finger the brick should not produce any impression over surface.
  7. The brick should not break when it is dropped from a height of 1m.
  8. The crushing strength of brick should be equal or greater than 3.5N/mm2.
  9. The water absorption should not be more than 20% of the weight of the brick. (immersed for 24hours)
  10. The brick should not show white patches when soaked in water for 24 hours and dry in shade. Presence of white patches indicates the presence of sulphate of calcium, magnesium and potassium.
  11. The brick should have low thermal conductivity which keeps the home cool in all weather.
  12. Light weight and hollow bricks provide good sound insulation.
  13.  Fire resistivity is another good quality of brick. 

The Concrete Calculator is a software tool used to estimate the quantity of Cement, Sand, Coarse- Aggregate and Water for concrete works. Application has the option to calculate Rectangular -( Slab , Beam & Column Volume ) and Circular - ( Beam & Column Volume ). 

Input can be entered in cubic-meter and cubic-feet, output of cement is displayed in kg, quantity of cement and aggregate are in cubic-meter and cubic-feet and required amount of water is calculated in Liters and Gallon.
Portable Version Compatible with all version of Windows

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Residential Building
Detail Estimate of Residential Building for

  1. Earthwork in Excavation
  2. Cement Concrete in Foundation
  3. First Class Brickwork in 1:6 cement sand in foundation and plinth
  4. 2.5 cm Damp proof course and
  5. First class brickwork with cement mortar in superstructure

Centre to Centre Length of Walls

       Hall and Bed Room1 c. Long walls =6+(2x0.15)+.03+0.3=10.6 m c. Short walls=5+0.3=5.3 m
       Kitchen, bath and Bed Room2 c. Long walls =4+4.3+(0.3x2)+1.4+(2x0.15)=10.6 m c. Short walls=5+0.3=5.3 m
                            bath = 1.4+(2x0.1)=1.6 m

Abstract of Quantity

  1. Earthwork Excavation - 53.46 cu m
  2. Cement Concrete in Foundation - 23.76 cu m
  3. Brickwork in Foundation - 23.11 cu m
  4. Damp proof Course - 24.99 sq m
  5. Brickwork in superstructure - 87.06 cu m
What is Expandable Clay Aggregate ? 
Expandable Clay Aggregate ( ECA ) is a round pellet structure produced by firing natural clay at a temperature of 1200 degree C. This result in forming hard honeycombed structure of interconnecting voids within aggregate. The shape of the material is rounded and size in the range of 0 to 30 mm (approximately)

Property of ECA
  1. Fire resistant
  2. Resistance to water absorption
  3. Low density
  4. Decomposable
  5. Environment-friendly
  6. High compressive strength
  7. Earthquake resistant
  8. Thermal insulation
  9. Sound insulation

The material is light in weight, strong and thermal insulated. So it can be easily used in construction projects.


1.     1. ECA Concrete
ECA concrete is economical, and load-bearing capacity is higher than the normal concrete, can be used as
· RCC Wall
· Precast Elements
· RCC Slab
· Beam
· Wall Pannel
· Block Systems
· Roof Pannels

2.     2. Road and Railway Construction
      ECA creates durable roads because of its water absorption capacity
3.     3. Used in water retaining structures
4.     4. ECA reduce the load on land filling walls.
The application is not only limited to construction but extended on roof gardening, agriculture, etc.

Free Software- Setting out simple curve
A curve connecting two intersecting straights having a constant radius is called Simple Circular Curve. The software helps in determining the offsets of a circular curve with known radius and deflection angle. These values of Ordinates O1,O2,O3 and On etc., in "m" can be used in plotting curve in field. A Linear method called Offsets from long chord is used in calculation of curves, application demonstrate the curve with ordinate graphically. Free Software can be downloaded from the below link

Elements of a Circular Curve
Portable Version Compatible with all version of Windows

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Its a technique used in Road Construction (Flexible Pavement).
Does not pollute the environment, during the process of paving roads.
What is Cold Mix?
     It is a mixture of Bitumen Emulsion and Aggregate at ambient temperature, to mix bitumen emulsion with aggregate there is no need of heating process. The bitumen emulsion remains liquid at room temperature.

What is Bitumen Emulsion?
     An emulsion is a mixture of two or more liquid which are non-mixable. When bitumen is suspended with water in the presence of emulsifiers it forms bitumen emulsion. The emulsifiers are divided into Anionic Emulsifiers and Cationic Emulsifiers.
            Types of Emulsion
                 1.Anionic Emulsion
                 2.Cationic Emulsion
                 3.Non Ionic Emulsion
Where Cold Mix Technology can be used?
       1. It is useful in areas where there is a longer distance between job site and batching plant.
       2. It can be used in locations that have a very low and moderate temperature (<40 degree C)

Advantages of Cold Mix Technology
      1.There is no option for heating the bitumen mix (no heating process).
      2.It is environment friendly and does not create pollution (no pollution).
      3.Does not requires costly equipment and high workability.
Used for Cold Mix process

      4.Option to engage Unskilled Labours.
      5.Work can be carried in almost all weather season ie. wet and humid climate.
      6.It increase the speed of work activity

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The Brick Work Quantity Estimator is a software tool used to estimate the quantity of Brick, Cement and Sand required for building projects. It is designed with a feature to input data like brick and wall size in various unit systems.

Required quantity of materials can be calculated by giving input in volume of brick work column, but when you have a building plan with details of dimensions for wall and openings calculation can be performed by entering through Detail Volume which is shown in the below picture.

In this detail volume calculation section, there are options to include each and every walls of the building, also the openings like windows, doors can be detected and gives the final volume in cubic metre, options are available to delete the data (right click and delete) which is entered wrongly in the table. The application as the provision to create detail report of the calculation in pdf file. An example image shown below explaining how to name a wall and include in the detail volume estimation section. 

Portable Version Compatible with all version of Windows

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If you have trouble in running Application install 

Microsoft .NET Framework 4.5

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