Page 18 - CPM Sri Lanka-Chartered Manager-Sept. 2021
P. 18
THE INSTITUTE OF CHARTERED PROFESSIONAL MANAGERS OF SRI LANKA
SEPTEMBER 2021
Revetment and ground Having completed the reclamation phase, works
improvement to ensure structural on site are now pertaining to the development
integrity of internal infrastructure such as roads,
streets, bridges and utility corridors as well as
In order to prevent erosion of the reclaimed land, landscaping works for over 27 Ha of public parks
revetment (structures to absorb and dissipate and beautification along the 2 km public beach
the impact of waves) was carried out along 5.6 and the promenade along the yacht marina.
km of the reclaimed land. These reinforcing
structures were built with rock and precast World class infrastructure
concrete blocks.
Utility tunnels have been built within Port City to
Dynamic compaction, a technique that densifies accommodate all electricity cables, water supply
soils and fill materials repeated surface tamping lines, telecommunication cables etc. which improve
using a heavy steel and concrete weight, was the aesthetic appeal of the city, in comparison to the
carried out within inner areas of the Port City. On conventional overhead power/ telecommunication
the other hand vibroflotation/ vibro-compaction, lines seen elsewhere in Colombo. These tunnels are
which is essentially repacking soil particles by provided with permanent ventilation, fire detection
using a powered electrically or hydraulically & fire fighting, lighting and remote monitoring
probe, was carried out along identified outer access with comply to an international standards.
areas to improve the structural integrity of the Additionally, the provisions for maintenance access
reclaimed area. allows to carry out maintenance activities in the
future without disturbances to the landscaping, road
and hardscaping works promoting efficiency in the
use of resources and costs.
The stability of the breakwater was then tested, similar to the Colombo South Port breakwater, which indicated the capacity
to withhold a once in a 200 year extreme wave attack.
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