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Case studies

Case Study – 1

  1. Foundation design was critical since our involvement in the project took place at a stage when the piles were already cast at site. Moreover, the soil condition in the flood plains of Mongla was extremely poor and the piles cast upto a depth of 20m below the existing ground did not take into account the effects of wind and seismic loads on the structure.

  2. Being the cyclonic zone, design was carried out for a normal wind speed as high as 278 km/hour.

  3. Deep foundations and RC & Steel superstructures are designed for supporting two 1500 tons mounded bullets, Substation, LPG filling Shed, Pump & Compressor Sheds, Air compressor Sheds, Fire water pump shed, RO plant shed and all other infrastructure buildings associated with the plant.

Case Study – 2

Project Name:  Structural Assessment and Restoration of the Golf Driving Range Structures, Tollygunge Club.

Our Scope : Health Check, Recommendation for Restoration and Project Management Consultancy(PMC).

  1. 20 towers constructed out of steel for holding down the nylon nets of the Golf range of 15 .5 m to 27. 5 m height, including the transverse rackers, horizontal girders and concrete pedestals were visually inspected by 2 inspectors standing on a platform raised or lowered by a crane.
  2. The elements of the structure which needed replacement or strengthening were identified and thicknesses measured. Bolts missing at different splice locations were identified. The interface of the structural members with the concrete surface of the pedestal is another critical area which was rigorously inspected.
  3. The major recommendations based on which restoration work was executed are :
    1. Encasing the RCC pedestals.
    2. Strengthening or replacing the structural members and gussets & splice plates.
    3. Replacing damaged fasteners and use of Ny-lock nuts in place of the ordinary ones.
    4. Use of protective coatings: Primer – High Build Zinc Phosphate (Z/P) and High build MIO – 1 coat of MIO on top of Z /P primer; Paint – Chlorinated Rubber Paint – 2 coats.
  4. During restoration, PMC services constituted – Inspection & progress monitoring, evaluation of steel test reports, fasteners & concrete cubes, checking Dry Film Thickness (DFT) of coatings, etc. The work at site was very efficiently and successfully completed within the cost and time schedules.
  5. Most importantly, the entire work had been executed safely without causing any hindrance to the Club’s daily activities in the Golf Range.

Case Study – 3

Project Name:  Construction of an Air-conditioned Auditorium at Tollygunge Club.

Our Scope :

  • Presentation of proposal.
  • Engineering design & drawings – Civil, Electrical, Air Conditioning and Firefighting.
  • Preparation of tender documents and inviting bids for construction.
  • Bid evaluation and selection of contractors.
  • Project Management and site supervision to ensure cost, time, quality and safety.

  1. Unique aspects of the structure :

    1. With bolted connections between the columns, beams, bracings and trusses, the facility is designed to perform as a dismantleable structure.
    2. Designed to withstand metro rail vibration beyond normal seismic considerations with isolation pads at column bases.
    3. Glass and steel Fibre Reinforced Concrete (FRC) grade slab used in place of conventional RC design to make the floor free from micro-cracks and affect considerable savings in steel reinforcements.
    4. Aesthetics & functionality in harmony:
    1. Wall paneling – double layered fiber cement boards with polywool insulation in between.

    Polyester acoustic paneling on interior wall to reduce noise and reverberation inside

    Both Polywool and polyester acoustic panels are green products and fire retardant.

    1. False ceiling – Gypsum board for insulation and acoustics.
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