Comparison between stone masonry and brick masonry

Comparison  stone masonry and brick masonry

Construction of brick masonry is quick as the uniform size and regular shape of bricks facilitates in maintaining proper alignment. Whereas, the dressing and handling of stone need more time and extra labour in the construction of stone masonry.

Stone masonry possesses higher strength, durability and weather resisting quantities than brick masonry

Brick masonry has cost of construction is less than stone masonry

Stone has higher crushing strength than brick .this makes stone suitable for the construction of dams, piers, docks and other marine structures.

Skilled labour need to stone masaonry than brick masonry.

 In monumental buildings which require heavy molding with large projections and carving, stone is suitable whereas brick can be used only for light ornamental work of lesser importance.

Stone masonry is more water-tight than the brick masonry.


Stone masonry gives a massive appearance and hence used for monumental works

Well textured stone masonry of superior quality needs no treatment to improve its appearance. The apparent defects of brick masonry can be only concealed by plastering.

Generally stone masonry is not damaged by chemicals present in the environment and salts present in water or sewage whereas expected brick masonry reacts and gets disintegrated.

The use of stone masonry is only appliance are restricted to handle the stone blocks and bricks can be conveniently moved by manual labour.

The brick masonry is more fire-resisting than stone masonry.

Mechanised Concrete Paving Technology

The Indian concrete paving equipment industry is undoubtedly a major beneficiary of the current spurt in infrastructure projects currently being witnessed in the country. Modern concrete paving machinery now readily available in the marketplace has gradually started replacing conventional manual system of paving (which was being deployed in India owing to non-availability of suitable equipment, expandable delivery schedules and most importantly low labour costs). With manual paving methods no longer relevant, the contracting community has realized the need to shift to a mechanized concrete paving method to meet the stringent delivery schedules at minimal costs

Advantages of Mecanised Paving

Mechanised Paving has many advantages over the conventional systems such as:

1.  Uniform compaction and finish to very close tolerance can be achieved by mechanized paving which is very difficult with manual paving.

2.  Higher rate of production enabling fast comple- tion of project, production rate of around 200 sq.

mt/hr to 400 sq.mt/hr can be achieved with mechanical paving which is very difficult with

manual paving.

3.  It is an accepted fact that voluminous and large area concreting is performed better by mechanized paving methods rather than manual methods in order to obtain better quality of slab in terms of compaction (strength) and finish

4. For manual lining, normally SLEEPERS are provided at every 10 m interval for ease of sub grade preparations.  No such SLEEPER are required for mechanized paving since concrete is

done continuously.

5.  In manual paving, slabs are cast in panels; hence there are a large number of construc- tion joints, which results in leakage/seepage of water at these joints.  In mechanized paving, construction joints exist only at closure of day's work, hence no such leakage/seepage problem.  For continuous mechanized C.C. lining, slabs are provided with contraction/

expansion joints.

6. There is always a chance of overrun and wastage of concrete in manual paving whereas there is no chance of such wastage of concrete in mechanized paving.

7. Manual concreting is laborious, slow and entirely dependent on manual skills, i.e., a large army of skilled masons is mandatory if speed and consis- tency in the quality of work is required.

8.  Mechanized Paving has a cost advantage over manual paving. Detailed analysis has proved at various places that the mechanized paving is not only faster but also works out nearly 2/3rd of thecost of manual paving.

8. Concreting of STEEP inclined surface, which is\ very difficult by manual methods, becomes an easy task with mechanized paving technologies.

Construction

Foundation

Construction technology deals with a method of construction of various types of buildings and their components. A building defined as an enclosed space covered by a roof Technically spelling a hut, a place , a cinema hall, a hospital, a workshop etc are all buildings.

Buildings in general can be broadly classified into two main categories. There are residential buildings and public buildings.

Residential buildings are those buildings which are used for domestic purpose of an individual or group of individual, such as ordinary house, a palace, a bungalow, and so on where as a public building is that which is meant for the use of general public and not for an individual or group of individuals.

Each type of building has two main components one of the component which is generally constructed above the ground level is called Super-structure while other component which is generally constructed bellow the ground level is called sub-structure or foundation.

Foundation is the most important part of a structure. The strength and durability of any structure depend upon the strength of its foundation.

Foundation is the part of the building or any structure, which supports the super-structure directly over it. It should not be confused that foundation is meant to support the load of the structure. But it is a device for transmitting the load of the super- structure to the sub-soil below it.

If the foundation of the structure fails the super- structure, however strong it may will have to go down. The failure of the structures are mostly due to the failure of the foundation.