Corporate / Commercial

Commercial Building, BKC, Mumbai

Commercial Complex, Bangalore

Problem:

• After exhaustive testing by internal quality assurance team, it was decided to improve the performance of existing concrete in select areas.
• Few areas were to be designed for additional battery load of data center.

Solution:

• Performance of hardened concrete was improved by carbon fiber wrapping.
• At few locations, conventional RCC jacketing or steel plate bonding was done.
• Flat slabs were strengthened in flexure using carbon fiber laminates.
• Punching shear was counteracted by structural steel plate and stiffener system.

Retail store of Charagdin, Mumbai

Problem:

• Structural elements on top floor showed signs of corrosion. NDT results were doubtful.
• Corrosion cracks and carbonation of concrete were visible at site.
• The work must be done without disturbing the customer movement in the garment outlet

Solution:

• The work was done in phases. Area under repair was covered to protect all the fixtures within.
• Due attention was given to ventilation of the area so that the dust generated moves out quickly and does not spread in the shop.
• Temporary false floor was prepared for working; the loose concrete was removed and steel treated for corrosion.
• Issue of honeycombing was addressed using epoxy grouting under pressure
• Sections were rebuilt using micro-concrete for columns and thixotropic repair mortar for slabs.
• All areas were given a treatment of glass fiber wraps from durability point of view.

Commercial IT Park

Problem:

• The PT concrete flat slab showed major cracks for an important commercial IT building.
• Misplaced PT cables were found as a prime reason for those cracks on two floors.

Soultion:

• Floor load was partially relieved by propping up the entire floor area from below.
• Cracks were sealed from below and grouted with monomer from top under gravity.
• A system of FRP laminates was designed and applied on top of slab to counter the deficiency
• Successfully carried out retrofit of 1 lakh sq.ft area using 10,000m of carbon fiber laminate.
• Full scale load test was carried out by using water load before handling over to client.
• Entire project was completed in 60 days.

Strengthening of a Podium Structure

Problem:

• A landscaped area with trees weighing 5-8 tonnes, (urban jungle) was made on a podium
• Post tensioned slab was failing in both punching shear an flexural moment.

Solution:

• Strengthening for punching shear by increasing the depth of capital by RCC jacketing.
• Increasing the flexural capacity by providing SRM carbon laminates from top and bottom
• Entire work was completed in 30 days

Distressed Post-Tensioned Member Strengthened with External Post-Tensioning

Problem:

• Cracks were seen in post tensioned beams on all floors of the commercial building
• Upon investigation, it was found that number of PT cables originally provided, was insufficient

Solution:

• Since already a PT system was in-place, it was decided to retrofit using same mechanism
• External post tensioning was performed successfully
• Project was completed in 45 days.

Strengthening of Retail Store, Mumbai

Problem:

• Deficiencies in beams and flat slabs were identified in kitchen and loading bay area
• Spans were large hence design intervention was critical.
• Retrofitting must be completed before the facility becomes operational.

Solution:

• Additional forces needed to be resisted, were obtained from consultant
• Steel plates were designed for enhancing the load bearing capacity of beams.
• The top portion of the slabs were chipped off to remove the cover zone.
• After providing shear keys, reinforcement mat was laid as designed and concreted.