Reshan Champika Ariyarathna

• Identify potential applications and projects involving geosynthetic and composite materials.
• Produce design calculations for pavement structures, landfill base and capping, slope reinforcement,
erosion control, root and salt barriers, and basal reinforcement.
• Evaluate stability of natural and man-made slopes for short-term, long-term, and seismic conditions.
• Assess risks posed by site conditions.
• Design earthworks and structure foundations, ensuring stability and safety.
• Monitor site conditions, earthwork, and foundation construction.
• Determine and design suitable foundations, earthworks, and pavement subgrades
• Define required material properties for construction. Elevated Project, Ltd
◦ Supervised 501 cast-in-situ bored piles for a 5.1 km elevated highway at Colombo harbor.
◦ Reviewed and approved all pavement and geotechnical aspects.
◦ Recommended design modifications for the contractor and accepted pile terminations.
◦ Evaluated and interpreted site investigation data.
◦ Reviewed detailed design of deep foundations.
◦ Reviewed CHSL test, tomography analysis, IPIT, PDA, and MLT results.
◦ Attended pile rectification and approved quantity estimations and variations.

• Supervised 501 cast-in-situ bored piles for a 5.1 km elevated highway at Colombo harbor.
• Reviewed and approved all pavement and geotechnical aspects.
• Recommended design modifications for the contractor and accepted pile terminations.
• Evaluated and interpreted site investigation data.
• Reviewed detailed design of deep foundations.
• Reviewed CHSL test, tomography analysis, IPIT, PDA, and MLT results.
• Attended pile rectification and approved quantity estimations and variations.

• Supervised the design and construction of a 41 km long expressway.
• Reviewed soft ground improvement methods and monitored their implementation.
• Evaluated and interpreted site investigation data.
• Designed shallow and deep foundations for structures.
• Computed cut slope stability and designed suitable earth-retaining systems. Climate Resilience Improvement Project (CRIP) and Strategic City
Development Project (SCDP); Project
(RLVMMP),
• Evaluated rock/soil slope stability for existing and new cut slopes.
• Designed suitable mitigation measures (scaling/reshaping, rock bolting/soil nailing, anchors, retaining
walls).
• Designed soft ground treatment methods (replacement, surcharge, PVD with surcharge, gravel
compaction piles, pile embankments).
• Reviewed pile foundation design for expressway bridges, viaducts, and shallow foundations for
drainage box culverts, pedestrian and vehicular culverts.
• Prepared specifications for landslide mitigation and monitored mitigation work.
• Supervised the Meetotamulla garbage reclamation design and construction.
• Performed unit rate analysis and prepared engineering estimates.

Climate Resilience Improvement Project (CRIP) and Strategic City Development Project (SCDP); Reduction of Landslide Vulnerability by Mitigation Measures Project (RLVMMP), Sri Lanka

• Evaluated rock/soil slope stability for existing and new cut slopes.
• Designed suitable mitigation measures (scaling/reshaping, rock bolting/soil nailing, anchors, retaining walls).
• Designed soft ground treatment methods (replacement, surcharge, PVD with surcharge, gravel compaction piles, pile embankments).
• Reviewed pile foundation design for expressway bridges, viaducts, and shallow foundations for drainage box culverts, pedestrian and vehicular culverts.
• Prepared specifications for landslide mitigation and monitored mitigation work.
• Supervised the Meetotamulla garbage reclamation design and construction.
• Performed unit rate analysis and prepared engineering estimates.

• Supervised geotechnical surveys at bridge sites and road pavements.
• Ensured material testing for embankment and pavement materials.
• Analyzed survey data and test results.
• Reviewed and supervised material sources and testing.
• Recommended and finalized pavement improvement methods.
• Assessed quantities for pavement improvement works.
• Reviewed and assisted in the foundation design of structures.
• Prepared reports, documents, and drawings for pavement works. for the Northern

• Supervised field investigations, including geotechnical drilling and sampling.
• Coordinated field and laboratory testing.
• Assisted in preparing technical memoranda and reports.
• Identified ground treatment areas based on investigation data.
• Attended meetings with government departments and other parties.

• Supervised laboratory and field tests related to construction work.
• Reviewed and approved concrete mix design and hot mix asphalt design.
• Ensured quality of earthworks, concrete works, and asphalt works per project specifications.
• Reviewed contractors design for road platform widening and checked stability of road embankment.
• Investigated suitable ground improvement methods for soft ground areas.
• Maintained contract quality control procedures on-site.
• Designed roadside slopes, ensuring safety and stability.

• Investigated retaining wall failure at 30+400 (RHS).
• Designed a shoring system with a retaining wall to protect the highway embankment.
• Evaluated settlement at Bentota Bridge approach (53+000) and recommended remedial measures.

• Reviewed the Clients design for road platform widening and checked stability of the widened road
embankment.
• Designed roadside slopes and newly formed cut slopes, ensuring safety and stability.
• Designed and supervised work on sections subject to slope failures.
• Ensured the safety of road users and buildings along the roadside during hillside embankment
excavation.

• Designed soft ground improvement methods and monitoring systems (vacuum consolidation, band
drain with surcharge, surcharge, rock replacement).
• Evaluated embankment stability with reinforcements using Geostudio 2004 and Plaxis.
• Evaluated site investigation data and interpreted laboratory and field test results.
• Designed shallow and deep foundations for structures (bridges, box culverts, etc.).
• Monitored embankment stability in soft ground areas during and after construction (using electric
piezometers, standpipe piezometers, inclinometers, settlement stakes, settlement plates).
• Conducted cut slope stability computations and designed suitable earth retaining systems (gabion wall,
gravity wall, sheet pile wall, soil nailing wall).
• Decided on Additional Preventive Measures (APM) for construction in aggressive ground (e.g.,
concrete in aggressive ground).
• Evaluated settlement analysis reports prior to removing surcharge.

• Delivered structural and geotechnical works including retaining walls, soldier pile walls, shallow
foundations, and basement construction.
• Designed and supervised steel sheet pile shoring, bored piling, embankments, gabion walls, culverts,
and road drainage structures.
• Managed construction planning, activity scheduling, material reconciliation, and cost estimation.
• Coordinated with clients on design modifications, additional works, and implementation to ensure safe,
timely project delivery.