advantages of IBS part 3 last (Vila)

Reduce Labour at Site:

Prefabrication takes place at a centralised factory, thusreducing labour requirement at site. This is true especially when high degree of mechanisation is involved (Warszawski, 1999)7.

 

Faster Completion:

An industrialised building system allows for faster constructiontime because casting of precast element at factory and foundation work at site can occur simultaneously. This provides earlier occupation of the building, thus reducing interest payment or capital outlays (Waleed

et al.

, 2003)8.

 

Not Affected by Adverse Weather Condition:

Construction operation is not affected by adverse weather condition because prefabricated component is done in a factorycontrolled environment (Waleed

et al.

, 2003)9.

 

Flexible Design:

An industrialised building system allows fexibility in architecturaldesign in order to minimise the monotony of repetitive facades (Warszawski, 1999). Anindustrialised building system provides flexibility in the design of precast element aswell as in construction so that different systems may produce their own unique prefabrication construction methods (Zaini, 2000)

Advantages of IBS(part 2 Vila)

Produce Better Product: 

IBS promises elevated levels of expertise throughout theindustry, from manufacturers, installers, engineers, planners, designers, and developers.The benefits of IBS will ultimately produce better products for the population (CIDB,2003)4.

 

Reduce Wastage, Less Site Materials, Costs, Cleaner and Neater Environment:

TheIBS, which enables on-site prefabricated or pre-cast building components manufacturedat factories offers minimal wastage, less site materials, cleaner and neater environment,controlled quality, and lower total construction cost (CIDB, 2003). For example, therepetitive use of system formwork made up of steel, aluminium, etc and scaffolding provides considerable cost savings (Bing

et al.

2001).5.

 

Higher Quality of Component:

An industrialised building system component produces higher quality of components attainable through careful selection of materials,use of advanced technology and strict quality assurancecontrol (Din,1984)

Advantages of IBS part 1(Vila)

Reduce Remittances by foreign worker:

The Government aimed to achieve 100 percent usage of IBS and to reduce to 15 percent or approximately 50,000 of foreignworkers in the construction industry by 2010. With the current foreign workers totalling227,000, the remittances of the foreign workers amounted to about 7.5 billion. It isexpected that the Government would be able to reduce the remittances with the fullimplementation of IBS. (Bernama.com, 2006) 2.

 

Enhance Efficiency of Construction Process and Higher Productivity:

IBS is amethodology whereby a local construction industry is driven towards the adoption of anintegrated and encouraging key players in the construction industry to produce andutilize pre-fabricated and mass production of the building at their work sites. This willhelp to enhance the efficiency of construction process, allowing a higher productivity,quality, time and cost saving. (CIDB, 2004)

Introduction to IBS(Vilasha)

The concept of mass production of quality building is termed as “Industrialised building system

 (IBS)”.Among the benefits of using IBS are: speed, quality and economics, all of which are

required so as to meet the large demand for housing. In order to develop techniques for mass produced houses, M

alaysia needs to access itself to the world’s most modern building system,

 building materials and housing products (Waleed et. al., 2003).The IBS, which enables on-site prefabricated or pre-cast building componentsmanufactured at factories, will enable cost saving and quality improvement through thereduction of labour intensity and construction standardization. Apart from this, it offers minimalwastage, less site materials, cleaner and neater environment, controlled quality, and lower totalconstruction cost (CIDB, 2003).One fact which seems to have the common consensus of all the stakeholders of IBS inMalaysia is that, the implementation of IBS in Malaysian building construction industry is still

very low compared to the conventional methoof IBS in Malaysian building construction industry is stillvery low compared to the conventional methods

disadvatage of steel structure (by liuyong)

http://www.civilengineeringterms.com/steel-structures/disadvantages-of-steel-structures-demerits-of-steel-construction/

High maintenance cost and more corrosion

Most steels must be painted at regular intervals because if they are freely exposed to air they get corrode. This requires extra cost and special care. If we use weathering steel then this will eliminate this cost. If steel structures are not properly maintained then they can loose 1 to 1.5 mm of their thickness each year. As a result the structure will loose its weight up to 35% during its specified life span and can fail under external loads.

• Fireproofing costs

Although steel members are incombustible in nature, their strength is tremendously reduced at temperatures prevailing in fires. At about 400 degree Celsius, creep becomes much more pronounced. Creep is defined as the plastic deformation under a constant load for a long period of time. This produces large deflections in steel structures. Stresses will produce in main member forcing other members to higher stresses or even to collapse. Steel is an excellent conductor of heat. It may transfer heat from a burning compartment of a building to start fire in other parts of the building. Extra cost is required for properly fire proof of the building.

• Susceptibility to buckling

Steel sections usually consist of a combination of thin plates. The steel members dimensions are also smaller than reinforced concrete members. If these slender member are subjected to compression, there are greater chances of buckling.Steel when used for columns is not very economical because considerable material has to be used to stiffen the columns against buckling.

• Higher initial cost / Less availability

In few countries, like pakistan, steel is not available in abundance and its initial cost is very high as compared with the other structural materials. That is the reason why steel structures are not very common in these countries.

• Aesthetics

For certain types of buildings, the steel structures are architecturally preferred. However, for majority of residential buildings and office buildings, steel structures are considered to have poor aesthetic appearance. At these places, they required false ceiling and cladding to improve their appearance. A good amount is required for such structures to improve their appearance.

IBS in malaysia(Vilasha)

More information are available at the website given below for your further reference:
http://www.cream.com.my/index.php/publication/mechanization/presentation-a-article/40-ibs-in-malaysia/download

Steel Buildings - The Modern Construction Design (by liuyong)

http://steelbuildings.hubpages.com/hub/Steel-Buildings-The-Modern-Construction-Design

advertage about steel material

Steel is looking to be the building block of the future. Why, because there are an extreme number of positive attributes and benefits you can get from steel as a construction material. First used around the 1700's to create fireproof mill structures in England, steel has come a long way. Modern variations first started to gain popularity around the early 20th century, became more common during WW2 and even more so afterward once steel was no longer being rationed for the war.


When deciding on a material for a building or other structure, one must take into account several things such as cost, quality, and safety. Steel makes for one of the best building materials because of it's high quality, low maintenance cost, and safe track record. Steel is an alloy consisting of several different metals, the most prominent being iron. This makes it an ideal material for construction since different kinds of steel can be tailor made to contain different qualities. For instance the more carbon added to steel, the harder and stronger it is, though this renders it less flexible.

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Cost is of course one of the most important factors when choosing building material. Steel is an excellent value for the money, a building made of steel can cost as much as 50% less to build than one made of something else. Buildings constructed from steel normally have lower insurance premiums(often as low as 40%) than ones made of more hazardous material. Steel structures are easily assembled as they arrive ready made to a construction site, which saves greatly on time and labor costs.

When it comes to versatility, you can't get more diverse than with steel. Steel manufacturers are quite accommodating and design buildings using computer technology. Components, fittings and all measurements are custom molded into an exact shape which allows contractors to make extremely accurate estimates and eliminates the need to unnecessarily purchase excess materials. Steel frames can allow for taller walls and wider open spaces. It also has one of the highest strength to weight ratios of any building material. A steel framework is lighter than concrete and other materials (it's lighter than wood by 50%) which reduces foundation requirements for steel buildings. Steel can of course work on it's own or be combined with other materials and can be made to meet the seismic and wind loads that building codes require.

As for safety, unlike wood steel is completely non-combustible and will not catch fire, nor will it suffer from mold or mildew. Pests that commonly infest buildings such as insects, termites and rodents will not permeate steel.

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On the environmental side, steel is 100% recyclable and is in fact one of the most recycled materials in the world. This has been going on for over 150 years because recycling steel is in fact less costly than mining for it and the metal does not lose any of its physical properties during the process. Stainless steel buildings are considered some of the most energy efficient in the market today. Extreme heat and cold do not affect steel buildings the way they do others.

Almost any type of building can be made of steel, barns, office buildings, storage buildings etc. Three of the most common types of steel structure are "arched", "straight walled" and "clearspan". Straight walled buildings are the kind mostly used for industrial and commercial purposes while arched constructions are used in the agricultural industry. Clearspan is an internal part of the construction which uses large, overhead support beams to reduce the need for internal support columns. Clearspan construction is often used for building large aircraft hangers or public arenas. Pre-engineered or "prefab" steel buildings have become very popular throughout the market. Pre-engineered buildings are made of a steel framed building system with pre-designed components that fit together in a wide variety of combinations for a specific use. One can even disassemble the structure and move it to another location if called for. Prehabs are even more economical and easily erected than regular steel structures.

There are several different types of coating and finishes for steel which have different advantages. A coating such as galvalume can be applied to protect the paint and surface of the building from rust. Nowadays steel can be made to look like any other type of material, using special finishes that imitate the look of wood paneling, stucco, brickwork, concrete and so forth. One can either have this done by a company or do it themselves.

Minimal labor and cost, resistance to the most extreme weather conditions, complete freedom of design and versatility of structure, and ecological safety combine to make steel a perfect choice for construction. With modern building becoming more and more efficient, modern steel buildings have become one of the most practical forms of architecture.