Vertical extension of facility in running environment is a challenging in terms of people using the facility below .
The most appropriate way to vertically extend the facility is to manufacture the primary members like columns, beams/ties away from the working site and do erection only when the facility is not occupied by the user below.
We propose vertical extension for roof top cafeteria, Office blocks, Convention centres,For the extended facility will have all the elements and accessories/ fire protection/joineries/toilets etc. for departments to evaluate the concepts for completion in larger areas.