Prof. K. S. Wanniarachchi

Professor
BSc. Eng (1st Hons), PhD (QUT, Australia), CEng, MIE (SL), MSSESL

Contact info

+94-(0)91-2245765 ~ 67 Ext 2221
Mobile: +94-(0)71-1689548
wanniarachchi@cee.ruh.ac.lk
Room CE 206

Specialization

  • Analysis
  • Design
  • Retrofitting of all type of STEEL SRUCTURES

Educational Qualifications

  • Dec. 2002 – Dec. 2006 PhD, Queensland University of Technology, Australia
    Research topic: Flexural Behaviour and Design of innovative Cold-formed Steel Beams with Hollow Flanges
  • Feb. 1992 – May. 1996 BSc.Eng (1st Hons), University of Moratuwa, Sri Lanka
    Class Rank 3, Out of 100 students Final Year. Research topic: Structural Optimization of Calicut Tile Roof Structure

Professional Experience

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Academic Awards and Scholarships

  • First Class Honors for Bachelor of Science Degree in Civil Engineering from the
    University of Moratuwa, Sri Lanka (1996)
  • Best Graduate in the Structural Engineering Stream, From the Department of Civil
    Engineering, University of Moratuwa (1996)
  • International Postgraduate Research Scholarship (IPRS) awarded by the Department of Education Science and Training, Australia, to read for a PhD Degree at Queensland
    University of Technology (QUT), Brisbane, Australia (2002)
  • Highly commendable paper award, at 8th International conference on Steel, Space & Composite Structures, 15-17 May 2006, Kular Lumpur, Malasia.
  • QUT Domestic Postgraduate Research Write Up Scholarship (QWU), offered by the
    Queensland University of Technology, Brisbane, Australia, in 2005
  • Research Fellowships awarded by the Department of Education Science and Training, Australia, to undertake research for six months (2015).
  • Presidential Awards for Scientific Publication in 2017, Paper I, (awarded in 2019)
  •  Presidential Awards for Scientific Publication in 2017, Paper II, (awarded in 2019)
  • Presidential Awards for Scientific Publication in 2018 (awarded in 2020)

Memberships

  • Member Institution of Engineers Sri Lanka MIE (SL) M5434
  • Member Society of Structural Engineers Sri Lanka MSSE(SL) CM0335

Employement History

  • Senior Lecturer: Department of Civil and Environmental Engineering, University of
    Ruhuna, Galle, Sri Lanka (March 2006 – To date)
  • Head of the Department: Department of Civil and Environmental Engineering,
    University of Ruhuna, Galle, Sri Lanka. (October 2008 – October 2011)
  • Research Scholar: Department of Civil Engineering, Queensland University of
    Technology, Australia (March 2002 – March 2006)
  • Probationary Lecturer: Department of Civil and Environmental Engineering, University of Ruhuna, Galle, Sri Lanka (November 2001 – March 2006)
  • Research Engineer: High Performance Concrete Research Laboratory, National
    University of Singapore. (December 1999 – March 2001)
  • Research Assistant: Department of Building and Architecture, National University of
    Singapore (December 1997 – December 1999)
  • Civil Engineer: TOA Corporation, Singapore (July – December 1997)
  • Civil Engineer: Land Reclamation and Development Authority, Sri Lanka (March – July 1997)
  • Temporary Instructor: Department of Civil Engineering, University of Moratuwa,, Sri
    Lanka (May 1996 – March 1997)

Research Interests

Grants

  • Co-recipient of the Research grant to Develop Medicus+, a Robot for Remote Patient Monitoring System to combat COVID-19. A grand received through the Technology Transfer Unit of University of Ruhuna offered by World Bank AHEAD project, 2020.
  • Responsive Research Seed Grant, Awarded by School of Post graduate Studies & Research, Sri Lanka Technological Campus, Padukka, Sri Lanka for “Failure Monitoring & Localizing System for Bolted Joints”, 2019.
  • Co-recipient of Indo-Sri Lanka Research Grants, Awarded by Ministry of Research and Technology, Sri Lanka, to peruse a study on developing indoor robot fleet in assisting search and rescue in hazardous environments, 2017.

Awards

  • Multimedia Communications Best Conference Paper Award, Awarded by the IEEE multimedia communications technical committee for the work on voice service support over cognitive radio networks, 2011.
  • Faculty of Engineering Graduate Scholarship Award, University of Waterloo, Canada. Awarded for excellent academic and research performances in each academic term, by the Dept. of E&CE, 2008 – 2012 (received 3 times – maximum a student can receive)
  • The Sonera prize for the most outstanding academic performance in the field of Telecommunication, Awarded by the Dept. Telecommunications Engineering, Asian Institute of Technology, Thailand, 2008.
  • The A. B. Sharma memorial price the best thesis from the field of Information & Communication Technologies and Telecommunications, Awarded by the Dept. Telecommunications Engineering, Asian Institute of Technology, Thailand, 2008.
  • The Kings scholarship for the development of education in Asia, Awarded for one person in each field of study, by the ministry of higher education, Thailand, 2006.
  • W. J. T. Small Award, Awarded for the best student in mathematics stream, by Richmond College, Galle, Sri Lanka 1998.

Teaching Areas

Grants

  • Co-recipient of the Research grant to Develop Medicus+, a Robot for Remote Patient Monitoring System to combat COVID-19. A grand received through the Technology Transfer Unit of University of Ruhuna offered by World Bank AHEAD project, 2020.
  • Responsive Research Seed Grant, Awarded by School of Post graduate Studies & Research, Sri Lanka Technological Campus, Padukka, Sri Lanka for “Failure Monitoring & Localizing System for Bolted Joints”, 2019.
  • Co-recipient of Indo-Sri Lanka Research Grants, Awarded by Ministry of Research and Technology, Sri Lanka, to peruse a study on developing indoor robot fleet in assisting search and rescue in hazardous environments, 2017.

Awards

  • Multimedia Communications Best Conference Paper Award, Awarded by the IEEE multimedia communications technical committee for the work on voice service support over cognitive radio networks, 2011.
  • Faculty of Engineering Graduate Scholarship Award, University of Waterloo, Canada. Awarded for excellent academic and research performances in each academic term, by the Dept. of E&CE, 2008 – 2012 (received 3 times – maximum a student can receive)
  • The Sonera prize for the most outstanding academic performance in the field of Telecommunication, Awarded by the Dept. Telecommunications Engineering, Asian Institute of Technology, Thailand, 2008.
  • The A. B. Sharma memorial price the best thesis from the field of Information & Communication Technologies and Telecommunications, Awarded by the Dept. Telecommunications Engineering, Asian Institute of Technology, Thailand, 2008.
  • The Kings scholarship for the development of education in Asia, Awarded for one person in each field of study, by the ministry of higher education, Thailand, 2006.
  • W. J. T. Small Award, Awarded for the best student in mathematics stream, by Richmond College, Galle, Sri Lanka 1998.

Other Academic and Professional Activities

Grants

  • Co-recipient of the Research grant to Develop Medicus+, a Robot for Remote Patient Monitoring System to combat COVID-19. A grand received through the Technology Transfer Unit of University of Ruhuna offered by World Bank AHEAD project, 2020.
  • Responsive Research Seed Grant, Awarded by School of Post graduate Studies & Research, Sri Lanka Technological Campus, Padukka, Sri Lanka for “Failure Monitoring & Localizing System for Bolted Joints”, 2019.
  • Co-recipient of Indo-Sri Lanka Research Grants, Awarded by Ministry of Research and Technology, Sri Lanka, to peruse a study on developing indoor robot fleet in assisting search and rescue in hazardous environments, 2017.

Awards

  • Multimedia Communications Best Conference Paper Award, Awarded by the IEEE multimedia communications technical committee for the work on voice service support over cognitive radio networks, 2011.
  • Faculty of Engineering Graduate Scholarship Award, University of Waterloo, Canada. Awarded for excellent academic and research performances in each academic term, by the Dept. of E&CE, 2008 – 2012 (received 3 times – maximum a student can receive)
  • The Sonera prize for the most outstanding academic performance in the field of Telecommunication, Awarded by the Dept. Telecommunications Engineering, Asian Institute of Technology, Thailand, 2008.
  • The A. B. Sharma memorial price the best thesis from the field of Information & Communication Technologies and Telecommunications, Awarded by the Dept. Telecommunications Engineering, Asian Institute of Technology, Thailand, 2008.
  • The Kings scholarship for the development of education in Asia, Awarded for one person in each field of study, by the ministry of higher education, Thailand, 2006.
  • W. J. T. Small Award, Awarded for the best student in mathematics stream, by Richmond College, Galle, Sri Lanka 1998.

Other involvement

  • Deputy Proctor, Faculty of Engineering, University of Ruhuna, (2016-to date)
  • Chairman, Board of Study, Faculty of Engineering, University of Ruhuna (Feb. 2019 to date)
  • Member, Committee in Sri Lanka Standards Institute (SLSI) to formulate National
    Annex for European Standard for design of steel structures EC3.
  • Member, Editorial board, Journal of University of Ruhuna (JUR) (2017-todate)
  • Assistant Editor, Society of Structural Engineers, Sri Lanka, SSESL. (2018-to 2019)
  • Member, Editorial board, Institute of Engineers Sri Lanka (IESL), 2010-2015
  • Member, Subject committee of Civil Engineering, University Grant commission (2009)
  • Chairmen, Research Committee, Faculty of Engineering, University of Ruhuna (Feb
    2012 – March. 2015)
  • Member, Board of Study, Faculty of Engineering, University of Ruhuna (Jan. 2012 –
    March. 2015)
  • President, Ruhuna Engineering Faculty Teacher Association (REFTA), (2012-2014)
  • Faculty Representative, Staff development center (SDC), University of Ruhuna,
    (2007/2008)
  • Senior Treasurer, Engineering Student Union, Faculty of Engineering, University of
    Ruhuna (2007/2008)
  • Student Councilor, Faculty of Engineering, University of Ruhuna (2007/2008)
  • Committee member, Fifth academic session and vice chancellors, awards, University of Ruhuna (2008)
  • Member of Internal Quality Assurance Cell (IQAC), Department of Civil and
    Environmental Engineering, 2019 to date.
  • Chairman of a committee to formulate regulations for MEng program, 2016-2017.
  • Member, By-Law revision committee of Faculty of Graduate Studies for postgraduate taught courses, 2013.
  • Chairman of the curriculum development committee, Department of Civil and
    Environmental Engineering, 2016-2017.
  • Member of the internal review panel of the faculty of engineering for program review in 2020
  • Member of a committee to consider OGPA calculation, Faculty of Engineering, Oct.
    2020
  • Member of a sub-committee to review academic regulation of the faculty, 2009-2011.
  • Members for the Faculty Quality Assurance Cell (FQAC), 2009-2012, 2019-to date
  • Chairman of the committee to study and make recommendation for recruitment and
    retention of academic staff in Faculty of Engineering, 2012-2017.
  • Member of the evaluation panel for Dean’s award and vice chancellor’s award, 2013- to date.
  • Faculty representative for the senate of the University of Ruhuna, 2016 – to date.
  • Chairman of Engineering Faculty library sub-committee for recommendation for the
    requirement of current on-going subscription, 2021
  • Sports coordinator for volleyball, Faculty of Engineering, 2020 – to date
  • Member of internal review panel of program review faculty of Medicine,2019
  • Member of organizing committee for SLUG XIII. Serve in Fund raising committee,
    2019.
  • Member of a committee to improve University ranking, 2021
  • Member of the self-evaluation report writing committee of institutional review,
    University of Ruhuna, 2019

Design Portfolios

  • Design of Structural System to Cover a Void at First Floor in the RDB Hed Office
    Building, Kalaniya (September 2016)
  • Structural analysis and design of office building for Water Board (3 storeys), Sri Lanka at Galle (February 2014)
  • Structural assessment on repair and retrofitting of old-Dutch hospital building at GalleFort. (May 2013)
  • Structural assessment of Sri Lanka Telecom head office building (9 storeys) at Lotus road, Colombo1. (December 2012)
  • Design check for column strength and stability at Hikkaduwa Market Building, (July
    2008).
  • Strength assessment of ‘rat-trap-bond’ masonry panels and ‘Calicut-tiled’ filler slab
    system, client of the project was Practical action, No. 5, Lionel Edirisinghe Mawatha, Kirulapone, Colombo 5 (July 2008)
  • Structural design of deck-foundation and an embarkation tower to mount a davit structure
    at Galle harbour. Client of the project was MSTI, No. 2, Customs Road, Galle. (June 2008).
  • Design of a retaining wall at LECO premises at Galle, client of the project was Lanka
    Electricity Co. (Pvt) Ltd., No. 182, Richmondhill Road, Galle.
  • Structural design of steel platform for life boat and its davit at Mechantile Seaman
    Training Institute (MSTI), Galle. Client of the project was MSTI, No. 2, Customs Road, Galle. (June 2006).

Publications

Journal Papers:

  • Wanniarachchi, KS., Mahendran, M., Keerthan, P., (2017), “Shear Behavior and
    Design of Lipped Channel Beams with Non-Circular Web Openings” Thin-walled
    Structures, Vol. 119, pp. 83-102.
  • Wanniarachchi, KS., Mahendran, M., (2017), “Experimental study of the section
    moment capacity of cold-formed and screw-fastened rectangular hollow flange
    beams” Thin-walled Structures, Vol. 119, pp. 499-509.
  • Keerthan, P., Mahendran, M., Wanniarachchi, KS., (2018), “Experimental Shear
    Study of Rivet Fastened Rectangular Hollow Flange Channel Beams with Web
    Openings” J. of Structural Engineering, ASCE, Vol. 144 (4), pp. 04018020/1-11.
  • Madhushan Dissanayake, Poologanathan Keerthan, Shanmuganathan Gunalan, K.S.
    Wanniarachchi
    , (2019), “Numerical Modelling and Shear Design Rules of ColdFormed Stainless Steel Lipped Channel Sections in Shear”, Journal of Constructional Steel Research, Article 105873, (In press)
  • D. M. M. P. Dissanayake; Keerthan Poologanathan; S. Gunalan; K. D. Tsavdaridis;
    K. S. Wanniarachchi; B. Nagaratnam., (2020), “Bending-Shear Interaction of ColdFormed Stainless Steel Lipped Channel Sections”, J. of Structural Engineering,
    ASCE, Vol. xxx (x), pp. xxx (paper accepted)
  • D. M. M. P. Dissanayake; Keerthan Poologanathan; S. Gunalan; K. D. Tsavdaridis;
    K. S. Wanniarachchi; B. Nagaratnam., (2021), “Numerical Investigation of ColdFormed Stainless Steel Lipped Channels with Longitudinal Stiffeners Subjected to Shear”, Thin-walled Structures, Vol. 158, Article 107179.
  • M. F. M. Ishqy; K. S. Wanniarachchi., K. Poologanathan; S. Gunalan; P.
    Gatheeshgar., S. Thadshajini, (2020), “Shear Behaviour of Cold Formed StainlessSteel Beams with Web Openings: Numerical Studies”, journal of Structures, Vol. 31, pp. 127-144.


Local and International Conference Papers:

  • Ishqy Fareed, Wanniarachchi Somadasa, Poologanathan Keerthan, Heshachanaa
    Rajanayagam, (2019), “Shear Capacity of Cold-Formed Stainless Steel Beam with
    Elliptical Web Openings: Numerical Analyses”, 10th International Conference on
    Structural Engineering and Construction Management, Kandy, Sri Lanka
  • Ishqy Fareed, Wanniarachchi Somadasa, Poologanathan Keerthan, Heshachanaa
    Rajanayagam, (2019), “Web Crippling Behavior of Cold-formed Stainless Steel LCB
    with Non-circular Web Opening Under ETF Load Case” 10th International
    Conference on Structural Engineering and Construction Management (ICSECM),
    Kandy, Sri Lanka., pp. 226-234.
  • Madhushan Dissanayake Poologanathan Keerthan Shanmuganathan Gunalan
    Wanniarachchi KS, (2019), “Shear Behaviour of Cold-formed Stainless Steel Lipped Channels with Reduced Support Restraints” 10th International Conference on Structural Engineering and Construction Management, Kandy, Sri Lanka, 
  • Ishqy Fareed, Wanniarachchi Somadasa, Keerthan Poologanathan,
    Shanmuganathan Gunalan, Marco Corradi, Sivaram Sivapalan, (2019), “Finite
    Element Analyses of Cold-formed Stainless-Steel Beam with Web Openings in Shear” 14th Nordic Steel Construction Conference, Copenhagen, Denmark, pp – 907-912.
  • Ishqy Fareed, Wanniarachchi Somadasa, Keerthan Poologanathan,
    Shanmuganathan Gunalan, Valentina Beatini, Sivaram Sivabalan, (2019), “Web
    Crippling Behaviour of Cold-formed Stainless Steel Beams with Non-Circular Web
    Opening”, 14th Nordic Steel Construction Conference, Copenhagen, Denmark, pp – 937-942.
  • Ishqy Fareed, K.S. Wanniarachchi, P. Keerthan, S. Gunalan, P. Gatheeshgar, R.
    Heshachanaa, (2019), “Behaviour of cold-formed stainless steel beams with elliptical web opening under web crippling”, 7
    th International Symposium on Advances in
    Civil and Environmental Engineering Practices for Sustainable Development,
    ACEPS – 2019, pp-251-256.
  • M.F.M Ishqy, K.S Wanniarachchi, P Keerthan, S Gunalan, M Corradi, (2019),
    “Numerical Analyses of Cold-formed Stainless-steel Lip-Channel Beams (LCB) with
    Non-Circular Web Openings Subjected to Shear”, International Conference on Civil
    Engineering and Applications – ICCEA 2019, Colombo, Sri Lanka.
  • Wanniarachchi, KS., Mahendran, M., Keerthan, P., (2016), “Analytical Study of
    Shear Behavior and Design of Lipped Channel Beams with Non-Circular Web
    Openings” Proc. of the 7
    th International Conference on Coupled Instabilities in Metal Structures Baltimore, United States.
  • Keerthan, P., Mahendran, M., Wanniarachchi, KS., (2016) “Shear Tests of Rivet
    Fastened Rectangular Hollow Flange Channel Beams with Web Openings” Proc. of
    the international colloquium on stability and ductility of steel structures – SDSS 2016, Timisoara, Romania.
  • Wanniarachchi, K. S., and Mahendran, M., (2006), Section Moment Capacity of
    Rectangular Hollow Flange Steel Beams, Proc. of the 8th International Conference
    on Steel, Space and Composite Structures, Kuala Lumpur, Malaysia, pp. 237-244.
  • Wanniarachchi, K. S. and Mahendran, M. (2006), Design of Rectangular Hollow
    Flange Steel Beams, Proc. of the 8th International Conference on Steel, Space and
    Composite Structures, Kuala Lumpur, Malaysia, pp. 393-400.
  • Smith, A., Kershaw, B., Mahendran, M. and Wanniarachchi, K. S., (2004), Local
    Connection Failures in Composite Sandwich Panel Systems, Proc. of the 17th
    International Conference on Cold-formed Steel Structures, Florida, USA, pp. 695-
    711.
  • Siriwardane, S.A.S.C., Dissanayake., P.B.R., Ohga, M., and Wanniarachchi, K.S.,
    (2010)
    , A simple fracture criterion to predict failure of steel structures in extremely
    low cycle fatigue, Proc. of 1st international conference on Structural Engineering and Construction Management.
  • K.S. Wanniarachchi, W.A.P Priyadarshani, and P. Piratheep, (2016) “Experimental
    investigation on shear capacity of lipped channel beams with non-circular web
    openings”, Proc. of the 7th International Conference on Sustainable Built
    Environment, Kandy, Sri Lanka. pp. 70-80.
  • Gunarathna, D.T., Wanniarachchi, K.S., Thadshajini, S., (2018), “Effect of noncircular web-opening orientation on shear capacity of lipped channel beams (LCBs”,Proceedings of the 6th International symposium on Advances in Civil and
    Environmental Engineering Practices for sustainable development, University of
    Ruhuna, Sri Lanka, pp. 382-389.
  • Wanniarachchi, K.S., Fernando, W.G.S., (2017), “Shear behavior and design of
    rivet fastened rectangular hollow flanged channel beams with web openings”,
    Proceedings of the 5th International symposium on Advances in Civil and
    Environmental Engineering Practices for sustainable development, University of
    Ruhuna, Sri Lanka, pp. 455-462.
  • Sathiparan, N., Sooriyarachchi, H.P., and Wanniarachchi, K.S., (2013) “Dynamic
    Loading Vulnurability Assessment of Multi-storey Buildings: Case Study of Sri
    Lanka Telecom Head Office Building, Proc. of 2nd International Symposium on
    Advances in Civil and Environmental Engineering Practices for Sustainable
    Debelopment, University of Ruhuna, Sri Lanka, pp. 97-104.
  • Karunarathne, N.P.K.V., Niranga, M.R., Sooriyarachchi, H.P., and Wanniarachchi,
    K.S.,
    “Learning Tool for Reinforced Concrete Design”, Proc. of 1st International
    Symposium on Advances in Civil and Environmental Engineering Practices for
    Sustainable Debelopment, University of Ruhuna, Sri Lanka, 2012, pp. 225-230.
  • D.C.K. Dodangoda, K.S Wanniarachchi, P Keerthan, (2020), “Web Crippling
    Behavior of Flange Fastened Stainless Steel Lipped Channel Beams with Non –
    Circular Web Opening”, Proceedings of the annual session, Society of Structural
    Engineers 2020, Sri Lanka, pp. 14-20.
  • Mathuranthakan.P , K.S Wanniarachchi, P Keerthan, (2020), “Lateral Distortional
    Buckling Behavior of Built-up Cold-Formed Steel Hollow Flange Channel Beams”,
    Proceedings of annual sessions, Society of Structural Engineers, Sri Lanka, pp. 8-13.
  •  Athauda, A.M.B.B.S., Wijebandara, M.M.A., Ihalakodippily, I.K.K.G., and
    Wanniarachchi, K.S., (2010), Feasibility of Using Bamboo as a Potential
    Reinforcement in Concrete Beams, Proc. Of 8th Academic Sessions, University of
    Ruhuna, Matara, Sri Lanka, pp. 102-114.
  • K.S.Wanniarachchi, R.D.N.R. Wickramasena, J.H.V.G.T.n.S. Jayawardana, (2014),
    “Restoring Flexural Performance of Damaged Timber Beams using GFRP Warping”. Annual sessions of Institution of Engineers Sri Lanka (IESL), pp. 77-82.
  • Ishqy, M.F.M., Wanniarachchi, K.S., Keerthan, P., (2020), “Numerical Analysis of
    Cold-formed Stainless Steel Beam with Circular and Elliptical web openings
    Subjected to Shear ”Proc. of 7th Annual Research Symposium (ARS), Faculty of
    Engineering, University of Ruhuna, Sri Lanka. pp 38-41.
  • Madhushan Dissanayake, Keerthan Poologanathan, Shanmuganathan Gunalan,
    Konstantinos Daniel Tsavdaridis,
    Somadasa Wanniarachchi, Ishqy Fareed, (2020).,
    “Investigation of Combined Bending and Shear Behaviour of Stainless Steel Lipped
    Channel Section”, The 8th European Conference on Steel and Composite Structures., (eurosteel2020).
  • Madhushan Dissanayake, Keerthan Poologanathan, Shanmuganathan Gunalan,
    Konstantinos Daniel Tsavdaridis,
    Somadasa Wanniarachchi, Ishqy Fareed, (2020).,
    “Shear Behaviour of Stainless Steel Channels with Stiffened Cross Sections: A
    Numerical Study”, The 8th European Conference on Steel and Composite Structures., (eurosteel2020).

Extended abstracts:

  • Karunarathna, G.B.C.C., Jayawardane, H.M.A.S., and Wanniarachchi, K.S.,
    (2014), “Factors and their Significance on Depreciation of Mechanical Properties in
    Steel Embedded in Concrete”, Proc. of 3rd Engineering Graduate Symposium on
    Recent Advances in Civil Engineering, University of Ruhuna, Sri Lanka, pp. 17-18.
  • Prasad, D.S., Premakumara, R.A.I.S., Wanniarachchi, K.S., and Sooriyarachchi,
    H.P., (2014), “Retrofitting of Damaged Masonry Araches using CFRP Wrapping”,
    Proc. of 3
    rd Engineering Graduate Symposium on Recent Advances in Civil
    Engineering, University of Ruhuna, Sri Lanka, pp. 23-24.
  • Wickramasena, R.D.N.R., Jayawardana, J.H.V.G.T.N.S., and Wanniarachchi, K.S.,
    (2014), “Restring Flexural Capacity of Damaged Timber Beams using GFRP
    Wrapping”, Proc. of 3
    rd Engineering Graduate Symposium on Recent Advances in
    Civil Engineering, University of Ruhuna, Sri Lanka, pp. 15-16.
  • Poornima, W.A.T., Jayawardhana, D.M.J.C.B, and Wanniarachchi K.S., (2013),
    “Optimization of Purlin Array for an Economical Metal roof Structure”, Proc. of 2
    nd
    Engineering Graduate Symposium on Recent Advances in Civil Engineering,
    University of Ruhuna, Sri Lanka, pp. 19-20.
  • Madushan, W.S.A., Karunanayake, K.A.S.M., Wanniarachchi, K.S., and
    Sooriyarachchi, H.P., (2013) “Feasibility of Retrofitting Lifeless Steel Bridges Using
    Insitu Concerting”, Proc. of 2
    nd Engineering Graduate Symposium on Recent
    Advances in Civil Engineering, Uni. of Ruhuna, Sri Lanka, pp. 17-18.
  • Ishqy, M.F.M., Wanniarachchi, K.S., and Keerthan, P., (2019), “Numerical analysis
    of Cold-formed Stainless Steel Lipped Channel Beam with web Opening Subjected
    to Shear”, Proceedings of the 8
    th research symposium, University of Ruhuna, Sri
    Lanka, pp. 43-44.
  • Abeyrathna, H.M.S.C., Wanniarachchi, K.S., and Keerthan, P., (2019), “Web
    Crippling Behavior of Stainless Steel Beam with non-circular web Opening under
    ETF Load Case”, Proceedings of the 8th research symposium, University of Ruhuna, Sri Lanka, pp. 45-46.
  • Edirisinghe, A.N., Wanniarachchi, K.S., and Keerthan, P., (2019), “Web Crippling
    Study of Supacee Sections with web openings under two flange load case (ETF and ITF)”, Proceedings of the 8th research symposium, University of Ruhuna, Sri Lanka, pp. 47-48.
  • Fernando, W.G.S., Wanniarachchi, K.S., (2017), “Analytical Investigation of webflange fastener spacing on shear capacity of rectangular hollow flange channel beams (RHFCB) with web openings”, Proceedings of the 6th Rresearch symposium, University of Ruhuna, Sri Lanka, pp. 43-44.
  • Kirishankar, R.., Wanniarachchi, K.S., (2017), “Effect of eccentricity on tension
    capacity of unsymmetrical steel section”, Proceedings of the 6
    th Rresearch
    symposium, University of Ruhuna, Sri Lanka, pp. 44-45.
  • Suwrnajeev, T.R., Wanniarachchi, K.S., (2017), “The effect of web opening shape
    and size on flexural capacity of rectangular hollow flange channel beams (RHFCBs)-Analytical Study”, Proceedings of the 6
    th Rresearch symposium, University of Ruhuna, Sri Lanka, pp. 46-47.
  • Gunarathna, D.T., Wanniarachchi, K.S., (2017), “Effect of non-circular web
    opening orientation on shear capacity of lip channel beams (LCB)”, Proceedings of
    the 6
    th Rresearch symposium, University of Ruhuna, Sri Lanka, pp. 43-44.
  • Priyadarshani, W.A.P., Piratheep, P., Wanniarachchi, K.S., Keerthan, P., (2015),
    “Shear behavior of Lipped channel beams with non-circular web openings”,
    Proceedings of the 4
    th Rresearch symposium, University of Ruhuna, Sri Lanka, pp.
    21-22.
  • Rajapakshe, D.W., Priyankara, M.H.D., Wanniarachchi, K.S., Keerthan, P., (2015),
    “Shear behavior of Cold-formed steel Z-section with circular web openings”,
    Proceedings of the 4
    th Rresearch symposium, University of Ruhuna, Sri Lanka, pp.
    23-24.
  • Wanniarachchi K.S., (2005), Flexural Behavior and Design of Cold-formed Steel
    Beams with Rectangular Hollow Flanges, Ph.D. Thesis, Queensland University of
    Technology, Brisbane, Australia.
  • Ishqy Fareed, K.S.Wanniarachchi, P. Keerthan, “Numerical Analyses of Coldformed Stainless Steel beam with circular and elliptical web openings subjected to
    shear”, Proceedings of the 7
    th annual research symposium, Faculty of Engineering,
    University of Ruhuna, pp. 38-41.