Mivan aluminium formwork

mfe formwork system
mumtaz alam

1. MIVAN – A Versatile Aluminum Formwork Construction Technique” MUMTAZ ALAM M.TECH in Structural Engineering , NITTTR kolkata

2. What is MIVAN Formwork..? History & Background When it is Suitable ..? Formwork Assembly Components of MIVAN Formwork Work cycle (Speed of Construction) Comparison between Aluminium formwork & Conventional formwork system Quality Advantage of MIVAN Other Advantage of MIVAN Limitations of MIVAN Formwork Conclusion O UTLINE OF P RESENTATION

3. Mivan is the Brand name from far East,Malaysia. It is Alluminium Alloy Formwork. The system of Aluminium forms (MIVAN) has been used widely in the construction of residential units and mass housing projects. It is fast, simple, adaptable and cost – effective. It produces total quality work which requires minimum maintenance and when durability is the prime consideration. This system is most suitable for Indian condition as a tailor–made aluminum formwork for cast–in–situ fully concrete structure. Aluminum Formwork system is a comparatively a new technology in India. W HAT IS MIVAN FORMWORK ?

4. Mivan is basically an aluminum formwork system developed by one of the construction company from Europe. In 1990, the Mivan Company Ltd from Malaysia started the manufacturing of such formwork systems. Now a days more than 30,000 sq. m of formwork used in the world are under their operation. In Mumbai, India there are number of buildings constructed with the help of the above system which has been proved to be very economical and satisfactory for Indian Construction Environment. The technology has been used extensively in other countries such as Europe, Gulf Countries, Asia and all other parts of the world. H ISTORY & B ACKGROUND

5. W HEN IT IS S UITABLE ..? Mass Housing No. of Repetitions Are More Typical Floors Fast Construction Required High Quality Column Less Structure Highly Suitable To Load Bearing Structure (Shear wall)

6. M I V AN aims in u s ing mod e rn co n s t ruction t e chniqu e s and equipment in all its projects. On leaving the MIVAN factory all panels are clearly labeled to ensure that they are easily identifiable on site and can be smoothly fitted together using the formwork modulation drawings. All formwork begins at a corner and proceeds from there. Fig.1 – Wall Assembly Details F ORMWORK ASSEMBLY

7. Fig.2 – Beam Assembly Details SIMPLICITY – PIN AND WEDGE SYSTEM The panels are held in position by a simple pin and wedge system that passes through holes in the outside rib of each panel. The panels fit precisely, simply and securely and require no bracing. F ORMWORK ASSEMBLY

8. C OMPONENTS OF MIVAN F ORMWORK The basic element of the formwork is the panel, which is an extruded aluminum rail section, welded to an aluminum sheet. This produces a lightweight panel with an excellent stiffness to weight ratio, yielding minimum deflection under concrete loading. Panels are manufactured in the size and shape to suit the requirements of specific projects. The panels are made from high strength aluminum alloy with a 4 mm thick skin plate and 6mm thick ribbing behind to stiffen the panels. The panels are manufactured in MIVAN’S dedicated factories in Europe and South East Asia. Once they are assembled they are subjected to a trial erection in order to eliminate any dimensional or on site problems. All the formwork components are received at the site within three months after they are ordered. Following are the components that are regularly used in the construction.

9. B EAM COMPONENTS Prop Head Beam Side Panel Beam Soffit Panel Beam Soffit Bulkhead

10. D ECK C OMPONENTS Deck P a n e l Deck Prop Prop L e n g th Deck Mid –Beam Soffit Length

11. O THER C OMPONENTS Internal Soffit Corner E x ter n al Corner External Soffit Corner Internal Corner

12. W ALL C OMPONENTS Wall Panel R o ck e r Kick e r

13. P IN AND W EDGE S YSTEM Pin Stub Image Courtesy: Google

14. S PEED OF C ONSTRUCTION - WORK CYCLE

15. S PEED OF C ONSTRUCTION – WORK CYCLE The system usually follows a four day cycle: - Day 1: - The first activity consists of erection of vertical reinforcement bars and one side of the vertical formwork for the entire floor or a part of one floor. Day 2: - The second activity involves erection of the second side of the vertical formwork and formwork for the floor Day 3: - Fixing reinforcement bars for floor slabs and casting of walls and slabs. Day 4: - Removal of vertical form work panels after 24hours, leaving the props in place for 7 days and floor slab formwork in place for 2.5 days.

16. S PEED OF C ONSTRUCTION – WORK CYCLE System for scheduling & controlling the work of other connected construction trades Deshuttering of the panels – 12 to 15 hrs Positioning brackets & platforms on the level- 10 to 15 hrs Deshuttered panels lifted & fixed on floor- 7 to 10 hrs Kicker & external shutters fixed in - 7 hrs Shutters are erected in 6-8 hrs Reinforcement – 10 to 12 hrs Electrical fittings - 10 hrs Pouring concrete

17. C OMPARISON BETWEEN ALUMINIUM FORMWORK & C ONVENTIONAL FORMWORK SYSTEM Sr No Characteristic Speed of construction Quality of surface finish Aluminium formwork system Four days cycle per floor Excellent plastering is not required Conventional Formwork system Ten days cycle per floor Bad 3 Pre-planning of form work system Requ i red Not Required 4 Type of construction Cast in situ cellular construction Simple RCC framed construction 5 6 Wastage of form work material Accuracy in construction In great amount Less than Aluform 7 Very less Accurate construction Essential 8 9 Coordination between different agencies Resistance to earthquake Reusage value Good resistance 250-300 Not necessrily required Less than Aluform 50

18. Q UALITY A DVANTAGE OF MIVAN The Advantages of this system are :- The MIVAN formwork is specifically designed to allow rapid construction of all types of architectural layouts. 1) Total system forms the complete concrete structure. 2) Custom designed to suit project requirements. 3) Unsurpassed construction speed. 4) High quality finish. 5) Cost effective. 6) Panels can be reused up to 250 times. 7) Erected using unskilled labor.

19. O THER A DVANTAGE OF MIVAN Easy to handle. Aluminum does not rust like steel; therefore, the Aluminium formwork can be reused hundreds of times. Formwork is made with an aluminium alloy, which has high tensile strength and is also very hard. Saving on overhead expenses due to speedy construction. Doesn’t require timber or plywood for construction activities so, it saves the environment. Casting of walls and slabs possible simultaneously . Less debris generation. Higher scrap value. Carpet area will increase. Collect the best premium from the customer, because of 100% RCC buildings.

20. L IMITATIONS OF MIVAN F ORMWORK Even though there are so many advantages of MIVAN formwork the limitations cannot be ignored. It requires uniform planning as well as uniform elevations to be cost effective. and skilled labor required. Large volume of work is necessary to be cost effective i.e. at least 200 repetitions of the forms should be possible at work. Architectural changes not possible on the structure (but some walls can be of brick work or openings can be entertained ). Number of holes will be more in the vertical wall, outer wall which is in direct contact with the rain, hole should be grouted by Non Shrink compound.

21. C ONCLUSION The intension of this paper is not provide a detailed comparison or explain the technical features of Mivan formwork system in depth. Instead of it aims to show the overview, condition & constraints governing the use of Mivan formwork system under the typical local circumstances. It can be concluded that the modern methods of construction such as 'Mivan formwork system' are the key to meeting the demand for efficient, sustainable housing. Also the quality and speed must be given due consideration with regards to economy.

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