Page 28 - CO_February_2022

COVER STORY elements within the highly congested area with vary narrow
REPORT • road to the project site.

Use of special lifting tools to increase the execution such
as remote ground release shackles, site developed multiple
beams lifting tools, high speed bolting tools to achieve
specified torque values.
• Use of noise reduction bolting torque machines to reduce
the noise to 40 db without compromising on the bolting speed.
• Use of surveying tools like total stations and lasers for
measurement accuracy and importantly the verticality of the
structure to achieve the stability.

Challenges faced during the erection
• Tower Cranes inside the building - The constrained project
space area and adjacent residential area challenged the
The building has car parking facility up to 6th stilt level and above 12 aerial area for movement of the Tower Crane, which forced
floors as Office Space. Total Height of the Structure above ground to install both the Tower Cranes inside the building.
level is 71.962 meters with floor plate of 6,450 square meters. • Use of Noise reduction tools and tackles - Control on
The project is designed as Composite Steel Structure with Grid of noise pollution called for use of Low Noise Bolt Tightening
11 m x 9 m, concrete infilled box columns with optimized size i.e. equipment’s deployment, without compromising the speed
up to Stilt Parking Area 1100 mm x 950 mm and above office floors of construction activity.
columns of size 600 mm x 600 mm to maximise the floor carpet • Logistics – Transportation of the steel structure elements within
area. the city area and live IT campus.
The floor to floor height for parking area is 3300 mm and office • Dimensional accuracy of the Structure – the proper planned
area is 4150 mm. Fire proof paint used for columns is Vermiculite structure erection works with regular level dimensional checks
Coating and Intumescent Paint. to achieve the specified size and verticality of the structure.
Over 2.6 lacs safe man hours achieved with deployment of an The entire building above stilt levels i.e. office floors are having
average 60-65 workmen crews daily. façade with dimensional accuracy to be maintained. The
building stability calls for stringent verticality measurements,
Description about the structural elements with help of the Total Station and site developed tools used to
All the Columns are Box Columns with concrete infilled and Beams achieve the verticality within 6 mm.
are I-Sections. Deck Sheeting is TR 60 with composite action.
Safety Initiatives
Uniqueness about the structure • Safety of Crew during Construction works – Induction of
The Composite Steel Structure is developed for vertical spaces. new crews with health checkups for the vertigo test. Daily Tool
The box columns with concrete infilled are highly optimized Box meeting with construction crew and orientation of daily
and sectional element thickness, built-up “I” Section Columns activities prior to start of the work.
connecting with RCC central core and peripheral four corner RCC • Stringent protocols follow-up for sanitation and hygiene of the
shear wall staircases, cantilever of 2400 mm on periphery with labour colony.
planter boxes. • TPI’s of all the lifting equipment and tools and tackles.
All the elements of the building are double side welded as per • Used special equipment for safe erection with speed such
the AWS standards with high end electrodes to have the highest as Tower Cranes, Deck Riders over the slabs at every level to
precision, consistency and efficiency during welding. access the height members in above floors, use of the beam
Grade of Steel used is Fe450 roller crawlers for anchoring the safety harness.
• Heat stress management – Project passed through the severe
Techniques used for erecting the structure heat weather and summer climate during which daily health
• Total Project Management – Alignment of the Engineering, checkup of all the workmen.
Production and Supply chain with site construction activity. • Covid-19 Safety of working crew – Regular sanitization of
• Just in Time Philosophy – the production of the structural materials received at site and training and orientation to
members were as per the construction plan and shipment of the crew including daily health monitoring. Labour colony
the same with continual monitoring. sanitization and regular health checkups helped in retaining
• QA/QC techniques – with meticulous and methodological the entire workforce during entire lockdown period of 45 days
approach, quality checks were implemented at all the stages and started the construction as soon as the clearance was
right from Raw Material to Finished Goods at plant with the given for commencement.
client’s QA/QC team involvement at every level for smooth
execution of the project. For more details visit:
• Meticulous Logistics plan – Transportation of the steel structure www.kirbyinternational.com

30 CONSTRUCTION OPPORTUNITIES|FEBRUARY 2022