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Showing posts from June, 2017

PLUMBING SYSTEMS - Types & Features

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The plumbing system installed in the building has two main objectives to be served. They are: 1.Supply of water for the human use2.To get rid of human waste
PLUMBING SYSTEM IN BUILDINGS
The plumbing system of a building will include the water distribution pipes, the fixture and the fixture traps, the waste, soil and the vent pipes, the building drain and building sewer, storm drainage system with their connected devices, connections and appurtenances within the building and outside, that is within the property line.
The figure-1 shows the basic plumbing system arrangement.



HOW TO CALCULATE QUANTITY OF CEMENT REQUIRED FOR PLASTERING?

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Workability is a parameter that a mix designer is required to specify in the mix design process. A concrete which has high consistency and which is more mobile need not be of right workability for a particular job.

NEED FOR WORKABILITY

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Workability is a parameter that a mix designer is required to specify in the mix design process. A concrete which has high consistency and which is more mobile need not be of right workability for a particular job.

TYPES AND CAUSES OF CONCRETE DETERIORATION

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Different Types of Deterioration observed are:
1. Spalling  2. Cracking  3. Debonding of the Joints  4. Erosion  5. Corrosion of Concrete Through Chemical Attack  6. Sagging of Beams and Floors, bowing or inclination  7. Excessive Efflorescence, staining or discoloration  8. Damages Due to Vibration  9. Faults in Design, Material, and Workmanship 

VARIABILITY OF CONCRETE STRENGTH - FREQUENCY DENSITY V/S COMPRESSIVE STRENGTH DISTRIBUTION CURVES

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The concrete compressive strength test result of cubes from a random sampling of a mix although exhibit variations, when they are plotted on a histogram are found to follow a bell-shaped curve, which is termed as the Normal or Gaussian Distribution Curve.




QUALITY CONTROL OF CONCRETE

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The quality control is a corporate, dynamic program to assure that all the aspects of materials, equipment, and workmanship are well looked after. The quality control should have conformity to the specification, no more, no less. For the manufacturer of the concrete, the quality control process will involve material, personnel, equipment and workmanship in all stages of concreting.

INFORMATION TECHNOLOGY (IT ) IN CONSTRUCTION

INFORMATION TECHNOLOGY IN CONSTRUCTION
The involvement of many stakeholders and phases in the construction project have resulted in the fragmentation of the construction industry. The fragmentation of the industry has created documented problems which have resulted in the propagation of argumentative relationships between the parties to a project.  The studies have shown that this fragmentation is the main reason behind the low productivity observed in construction.

Bond in R.C.C - Local Bond , Anchorage Bond and Development Length

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Rheology of Concrete- Factors Affecting Rheological Properties of Concrete

WHAT IS RHEOLOGY OF CONCRETE?
The Rheology may be defined as the science of the deformation and flow of materials and is concerned with the relationships between the stress, strain, rate of strain and Time. The rheological principles and the techniques as applied to concrete include the deformation of hardened concrete, handling and placing of the freshly mixed concrete and the behavior of its ingredients. The rheology of fresh concrete like workability include the parameters of stability, mobility, and compatibility, which are necessary to determine the suitability of any concrete mix. For the assessment of the rheological behavior of concrete, these parameters are redefined in terms of forces involved in the transmission of mechanical stresses on the concrete. The fresh concrete is subjected to normal and shearing forces during its handling and placing.