Prof. Lal Tennekoon: An illustrious but utterly unpretentious and much -loved academic

Professor Basil Laliputhra Tennekoon, Emeritus Professor of Civil Engineering at the University of Moratuwa, was called to rest on 30 March 2025 at the age of 82. He was educated at S. Thomas' College, Mt. Lavinia, where he won the Miller Mathematics Prize in 1960, an achievement that gets one's name on a board in the college hall. The prize is named after Rev. Edward Miller, the fifth warden of the school, who had read mathematics at Cambridge. Young Tennekoon fulfilled this early promise, obtaining first class honours in civil engineering from the University of Peradeniya in 1965. There were many Thomians who entered the engineering faculty with him, including Shanthi Kumar Rasaratnam (now holding an MBE for services to water engineering in the UK), Mano Ponniah (who later played first class cricket for Cambridge and All-Ceylon), and Gerard Rodrigo (subsequently a Marxist development economist).

- Professor Priyan Dias (a student and later colleague of Professor Lal Tennekoon)

Lal Tennekoon went on to complete his PhD at Cambridge University in 1970, on the behaviour of foundations on sandy soils. Other notable Peradeniya graduates/academics who completed PhDs in Cambridge around this time included Alagiah Thurairajah (1962, on shear properties of soils), Munidasa Ranaweera (1969, on the finite element method applied to limit analysis) and Vickramabahu Karunaratne (1970, on plasma physics) - halcyon days for Peradeniya engineering, no doubt. For six years after his PhD, Tennekoon was attached to the Faculty of Engineering at Peradeniya, teaching at both undergraduate and postgraduate levels. He joined the Katubedda Campus of the University of Sri Lanka in 1975 and became a Professor of Civil Engineering at the University of Moratuwa in 1984 and Senior Professor in 1994. Moratuwa was fortunate to obtain his services. When I once suggested that his moving to Moratuwa was a result of "the best people gravitating to the best places", his rejoinder was that he would have found it difficult, after he got married to Preethi, to keep pace with Thurairajah's work ethic in the Peradeniya soil mechanics lab!

He guided the fortunes of the Civil Engineering Department as its Head from 1980 to 1985, during which time the annual undergraduate intake was increased from 50 to 100, and a new civil engineering complex was constructed to accommodate that increase. He also steered the Faculty of Engineering as its Dean for 10 months in 1994/1995, when there was sharp division in the university regarding the continuation of the NDT programme within the Faculty.