Drivers In Adopting Prefabricated Construction by Vgs Solar & Building Systems P

1. DRIVERS IN ADOPTING PREFABRICATED CONSTRUCTION

2. Light Weight Structure Size of Members: • Foundation Design: • Due to light weight steel construction requires only shallow foundation with a very simple design characteristics. A monolithic slab is the best foundation for Light Gauge Steel Frame building. • Due to heavy weight concrete construction requires a deep foundation with tedious design characteristics. Cross Section area of structural member in Rcc structure is more which ends eating more floor space, making the structure more dense which ultimately add up to the weight of the building. Cross Section area of structural members in the structural steel is much lesser which provides us with more utilisable space on the floor cutting the self weight of the structure. Excerpt from Comparative Study of R.C.C, Steel and Composite (G+30 Storey) Building A typical office building plan is selected with area covering 24m x 42 m.

3. Ease of Accommodating Services Steel Structure - Services accommodation within false ceiling headroom R.C.C. Structure - Loss of headroom due to service accommodation.

4. Time,Workmanship and Longevity Steel Construction • It takes about 2/3 of the construction time when compared to the normal construction technique. Sometimes if concrete construction takes 18 – 24 months to finish the project steel makes about 12 months to finish it. • The workmanship on steel construction requires about 60% less laborers involved in RCC construction. Pre- engineered Steel Frame building are printed in a custom roll former control by a computer program. Assembly can be done at factory or on site, erecting is done on site, reducing time and labor. • The life span of Steel Building is approx. 70 to 80 years. R.C.C. Construction • It takes a normal and even long construction time in the lag of resources in the project. • The workmanship on concrete construction is more human driven and is thus difficult to standardize. Scope for human error enhances the chances of failure. • The life span of R.C.C Building is 40 to 50 years.

5. Eco-Friendly Water Consumption Rcc requires a lot of curing in the construction of every component, while the steel demands minimum use of water curing hence it is more environment friendly construction material. Carbon Emission Steel structure has lower embodied carbon impact than the RCC framed structure. Steel building emits 395 kg C02 / Sq. m floor area which is 16% lesser than 495 kg Co2/ Sq. m for RCC structure.

6. Recyclable The Great majority of concrete from demolition site is crushed and used base or fill. This is downcycling rather than recycling to the secondary use which is not as same as the first. Steel being well supported by a well developed and efficient scrap collection infrastructure. It can be recycled to form products that are of the same or higher standard and quality as the original material.

7. Benefits against Nature Earthquake : In case of Steel Construction , • Even at high magnitude earthquake, the damage would be only revealed on cladding no structural damage or collapse occurs due to light weight. • The reason it resists earthquake is the reduction in weight of the structure and so the building can vibrate to its extent and due to the higher elasticity index ,the steel comes to its original state after some vibration. Steel Building even of six storey, can withstand the lateral forces of 9.0 magnitude earthquake R.C.C. Construction • A high magnitude earthquake can even collapse the whole structure due to the main reason behind is poor quality of workmanship and negligence. • The main reason for collapse is due to the presence of honeycomb (un vibrated Concrete) which is being finished by sand and cement mortar can create a major issue at the time of ground motion.

8. Benefits against Nature Heavy Rainfall : R.C.C.Construction is heavily delayed and affected due to rainfall. • The process of strengthening(drying) post-concrete pouring requires proper sunlight. • The porous nature of concrete allows the water to seep in and cause slow but hazardous damage to the structure. • The damages of a rainfall cannot be seen instantly. In case of steel , • There isn’t a strengthening with time factor involved - thus , though it’s difficult to work on-site during rainfall , the work can be resumed instantly post the shower. • The damages are clearly visible , as the steel is exposed and thus can be taken care of. • The off-site production can be continued.

9. Architectural Flexibility

10. Cost Cost of Columns in Different Structure Cost of Beams in Different Structure Indirect Economic Benefits;- • The steel constructions works out to be more economic with increasing number of floors. • In the the long run, as the scrapping value and recycle percentage of steel is high, so the ultimate cost of building to the investor is low. Note - The Building in discussion of this cost analysis is a 12m x 42m structure of 15m height.

11. Thank you