Structural Renovation Project Office Building, New Delhi
Project Cost INR 1.9 Million
Project Duration: FY 2011-12
The Office Building has 4 store rooms & 7 washrooms in the Mezzanine floors
Heavy seepage causing damages to the walls and structural members were observed in some floors as can be seen in the following Pics
Corrosion of the reinforcements in the structural members viz. slabs, beams and columns greatly reduces the strength of the same which is a dangerous phenomenon impacting the physical security of the occupants and the economic life of the building
Causes Identified
The root cause of seepage were identified as:
Leakage from the waste pipes in the Shaft
Seepage from the washroom just on the immediate floor above
In the office Building from time to time many washrooms are renovated – but the slab corrosion / seepage issues of the floor immediately below were not identified / rectified
Once a reinforcement gets corroded – it increases in volume thus the surrounding concrete gets cracked and becomes loose thereby reducing the structural strength of the building itself
Corrective Actions Taken
The project was started to arrest the cause existing seepage / leakage and strengthening the damaged structural members so as to give it required strength to carry the existing load
Condition after demolition – 2nd floor Store Room
Condition after demolition – Columns & Beams
The Column at 2nd floor Store Room severely Corroded
Similar severe corrosion observed at 6th floor store room Project Cost INR 1.9 Million
Project Duration: FY 2011-12
The Office Building has 4 store rooms & 7 washrooms in the Mezzanine floors
Heavy seepage causing damages to the walls and structural members were observed in some floors as can be seen in the following Pics
Corrosion of the reinforcements in the structural members viz. slabs, beams and columns greatly reduces the strength of the same which is a dangerous phenomenon impacting the physical security of the occupants and the economic life of the building
Causes Identified
The root cause of seepage were identified as:
Leakage from the waste pipes in the Shaft
Seepage from the washroom just on the immediate floor above
In the office Building from time to time many washrooms are renovated – but the slab corrosion / seepage issues of the floor immediately below were not identified / rectified
Once a reinforcement gets corroded – it increases in volume thus the surrounding concrete gets cracked and becomes loose thereby reducing the structural strength of the building itself
Corrective Actions Taken
The project was started to arrest the cause existing seepage / leakage and strengthening the damaged structural members so as to give it required strength to carry the existing load
Condition after demolition – 2nd floor Store Room
Condition after demolition – Columns & Beams
The Column at 2nd floor Store Room severely Corroded
Condition after demolition – Slabs
Steps taken to overcome the challenges
Once the extent of damage was visible – we had to modify the scope of work by giving stress to the items which will be helpful for structural strengthening
Guiniting – was suggested by the Consultant and in the joint meeting with contractor and consultant – this new item was added in the scope of the project
Guiniting is mortar mixed with waterproofing chemical which is thrown upon the effected surface at high speed and pressure using Guiniting or shotcreting machine. The mixture clings onto the surface and the chemical shields against any sort of water seepage
To address the grievance of the Contractor – We co-ordinated with various departments of office building to vacate all the stored materials from the site
The Project then entered its most Critical Phase - cleaning of the existing reinforcement with alkaline rust remover & wire brush, followed by zinc antirust agent over reinforcement etc. will be carried out. In the pic - new reinforcement of 6 mm dia provided has been provided for Guiniting
After Finishing with Cement Plaster
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My blogs related to Facilities project Management are:
Residential Apartment Renovation Project
Paver Block Laying Project
Guest House Renovation Project
Boundary Wall Repair Project
Creation of Waiting Lounge Project
Major Waterproofing project for office building
Interior fit-out of new office / Renovation of office project
Structural strengthening of office Building
4 wheeler Parking Creation Project
Road Repair Project
Chain Link Fencing Facilities Project
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