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In this modern world an builders faces lots of challenges in the construction of a house or buildings to compete the world in the form that how to make a modern house or building which is environment friendly, energy saving and low cost etc, such sort of problems putting pressure on builders now a days.
Because of the rising cost of the material which is used in traditional construction methods which are unlikely to meet the demands for future developments. That's why more and more builders or designer are now understand the benefits of the development of modern material which are gradually used in the buildings now a day's.
Housing associations are now encouraging the housing corporation to use the modern ways of construction known as modern methods of construction when building new developments. This policy is a direct result of the Government's response to a number of drivers that have resulted in what it perceives to be a crisis in housing supply.
In areas of growth, house construction in the private sector has tended to focus on the production of traditional houses - either semi-separate family homes or larger separate executive homes. These private sector dwellings are beyond the reach of most first time buyers, particularly key-workers in comparatively low-paid jobs in the public sector. The Government is looking to housing associations to give dwellings for those who can't afford to buy the house. The Housing Corporation is the key agency regulating
The Housing Corporation is the key agency regulating delivery of housing in the social housing sector. They assist with delivery of policy via grants awarded through the Approved Development Programme (ADP). A proportion of the ADP has been ring-fenced (The Challenge Fund) for the delivery of new homes quickly and cost effectively, in areas of high demand as well as stimulating a step change in supply by encouraging innovative forms of construction.
In the face of the support from political and regulatory authorities to make greater use of modern methods, lots of stakeholders are still unsure about modern methods of construction for some of reasons. In the case of housing associations there is doubt about whether or not modern methods are able to deliver energy efficient homes at good reasonable prices. This pamphlet aims to demonstrate that homes that cross the requirements of building regulations in sense of their material efficiency can be built cost-effectively.
Structural insulated composite panels are one of the most satisfying technologies in the construction industry. Started in the years of 1940s when the new sandwich design concept was generated, where there were two wooden materials and a different element between them generating maximum strength to the structure.
As mentioned earlier, the SIP has an insulated structure between two wooden boards. This most commonly used materials are expanded polystyrene (EPS), extruded polystyrene (XPS) or rigid polyurethane foam.
Figure : STRUCTURAL INSULATED COMPOSITE PANELS
Other materials can also be used for example, steel, aluminium, stainless steel, fibre-reinforced plastic, and magnesium oxide.
the structure is more Tougher and stronger due to the sandwich pattern of the material
More insulated than any of the materials
Less operating cost and can be used almost everywhere for eg. Roof, floor, walls etc.
The manufacturing and the production can take some time
Expensive manufacturing cost
Have to prevent the composite from moister and keep it ventilated
The material creeps over time
The volumetric construction is also, known as the modular construction. This kind of construction is mostly used at places where the employer cannot afford waste time and material for e.g. a busy road, a hospital etc.
The construction components are manufactured and processed and are stacked onto prepared foundations to form dwelling. The materials used to make the components include light gauge steel frame, timber frame, concrete and composites.
Saves time and also the labour cost.
Can reduce the waste significantly generated during construction and also comparatively the least amongst other construction methods
It is the most efficient when using identical units as it is the same common production line used.
Improved quality compared to the other construction methods
Setting up a manufacturing and production line could be a major concern issue when considering cost
Transporting could be expensive depending upon the size of components
Also, installations and other factors would affect the construction workers if the components are heavy or complex structure and have to be perfectly installed
STEEL FRAME CONSTRUCTION
The steel frame construction is usually used for constructing bigger structures like building, sky scrapers etc due to its durability and toughness. The SFC is one of the most efficient construction methods which uses steel beams, T shaped and I shaped beams as to resist the stresses.
Oakridge, a development of 299 dwellings for Sentinel Housing Group, utilised light gauge steel frame panellised construction for the first two phases. The homes, constructed from steel frames manufactured by Ayrshire Steel Framing, share standardised layouts - visual variety was achieved externally by incorporating a variety of physical features (such as bays, dormers and balconies) along with a variety of finishes (different coloured renders, brick and timber cladding). Dormers and balconies were also prefabricated in glass reinforced plastic (GRP).
2. Advantages of Steel Frame Construction:
They can build very high and large
They are light weight and strong
They are easy to fix or assemble
They are accurate and predictable
3. Disadvantages of Steel Frame Construction:
Steel is an expensive material Frames are unstable
These types of frames needs fire protection
They needs separate "skin"
TIMBER FRAME CONSTRUCTION
Timber frame is a modern method of construction that offers an important high-quality solution to the many housing and construction challenges facing the UK.As one of the leading modern methods of construction, timber frame has grown consistently year on year. It's regarded as a means of achieving good quality, reducing time spent on-site, increasing safety and overcoming skills shortages in the industry, and will play a very important role in the formation of homes in sustainable communities by 2016.
Wood is the only renewable commercial building material and as a way of construction is effectively carbon neutral. When you use timber frame you're actively helping to reduce the belongings of global warming. Further improved by its low embodied energy and excellent insulation properties, it means happy customers with lower heating bills and a good future for the planet.
Advantages of Timber Frame Construction
In timber frame construction needs small amount of labour.
It can be seen that the benefit in terms of time saving on site manifests itself as a saving in construction risk.
Timber frame construction is environment friendly but the environmental benefits of timber frame construction are reduced when timber is imported from sources outside non local and requiring substantial fuel consumption in transportation.
Disadvantages of Timber Frame Construction
Apparently problems with timber frame construction in the housing industry from each end users and local establishment would include a perceived huge risk of fire, problem of sound lessening in a timber structure and the impact such a structure might have on the security of the end user.
Timber frames are designed and manufactured to tight tolerance and require correct setting and other adjacent construction such as chimneys, rising walls and block construction. As a result, these works need to be set out with a good degree of accuracy.
Panels should be stacked on a flat surface so that warping or buckling does not happen. Proper on-site practices and skill of deliveries can address this matter.
Where housing is proposed in areas at threat of flooding, the planned construction methods undertaken need to be reviewed in order to measure the possible risks or implications should flooding occur.