Title : RETROFITTING OF AUDITORIUM BUILDING
Authors : P. S. Patankar (1), Suneel Voditel (1) and Devarsh Bhonde (2)
Publication : 13th – 16th February 2013
Volume :
Pages : 8-Jan
Price : 250
Abstract : An innovative design with external prestressing is used for strengthening of the Auditorium Building of St. Helena’s School at Pune (Maharashtra). The building consists of ground floor, first floor, mezzanine floor and roof slab. The construction of the building as per original design was started in the year 2007 and almost all the works was completed except finishing work. During finishing works, excessive vibrations with deflections were observed and the main girder above the swimming pool was noticed to have sagged by about 80 mm. The movement of workers and construction materials was causing excessive vibrations in the structure. Cracks were also observed in several structural members. Apprehending the fear that the existing structural design might not be safe for the prevailing loading and safeguard it against failure, M/s. Skyline Consulting Engineers Pvt. Ltd. was engaged for suggesting remedial measures/modified design. After carefully auditing the structure, it was found unsafe for use. It would have collapsed against the conceivable loads during its use causing catastrophic damage to life and property. The principal consultant and his team have provided an innovative solution for the strengthening of the structure maintaining its existing plan and clear headroom. The girders were pre-stressed and the columns were strengthened by providing additional area and reinforcement. Today, the school building is being used safely.