Articles authored by UoM staff: Recent submissions

Now showing items 261-280 of 728

Kinematic and inertial effects of earthquakes on rock socketed single piles in a two-layered medium

Thilakasiri, HS [Article-Abstract]

The behaviour of piles in a two-layered soil medium subjected to earthquake ground accelerations are investigated using finite element method. The kinematic and inertial effects on rock socketed piles in a two-layered soil ...
Use of the Osterburg Cell load testing as a post construction quality control test for bored and cast In-situ concrete piles in Sri Lanka.

Thilakasiri, HS [Article-Abstract]

Economy, reliability and amount of information gathered from post construction quality control load testing of piles playa vital role in design and construction practices of bored piles. The piling industry and in particular, ...
Investigation of the accuracy of the dynamic methods of capacity estimation of piles

Thilakasiri, HS; Jayaweera and, R; Abeyasinghe, RM [Article-Abstract]

Capacity estimation of piles using dynamic methods is considered in this paper. Commonly used dynamic methods in Sri Lanka, high strain dynamic load testing and pile driving equations are considered in detail. The accuracy ...
Investigation of the accuracy of the elastic settlement estimation methods and the extrapolation techniques of plate load test results

Thilakasiri, HS; Priyantha, SM [Article-Abstract]

Accurate estimation of the settlement of shallow foundations is an important aspect in the design of such foundations. Most often elastic settlement estimation methods are used in the estimation of settlement of shallow ...
Earthquake induced kinematic forces on pile foundations in fayered medium

Thilakasiri, HS; Potts, DM; Kontoe, S; Zdravkovic, L [Article-Abstract]

The kinematic forces induced on piles in two-layered soil medium are investigated using finite element method. Typical layered subsurface condition with the soil properties relevant to Sri Lanka are considered in the ...
Improvement of local soils in order to make "Fast & Bouncy" cricket pitches

Nawagamuwa, UP; Senanayake, AIMJ; Silva, SA; Senanayake, DMI [Article-Abstract]

The playing character of pitches varies considerably from country to country and generally, pitches in the Indian subcontinent are regarded to be 'slow, low & dusty' in contrast to Australian or South African pitches which ...
Estimation of heat exchange across multi-facade roof structures for residential buildings

Sirimanna, MPG; Attalage, RA; Perera, KKCK [Article-Abstract]

Roofs of residential buildings play a crucial role in the context of building heat gains and thermal comfort, since they are exposed to a significant portion of insolation during the day. Therefore, it is important to ...
Using SWMM as a tool for floodplain management in ungauged urban watershed

Wanniarachchi, SS; Wijesekera, NTS [Article-Abstract]

Mathematical modelling is a powerful tool for arriving at best water resources management. But it is necessary to possess gauged data for model calibration and verification. However most of the urban watersheds are not ...
Key issues of data and data checking for hydrological analyses - case study of rainfall data in the Attanagalu Oya Basin of Sri Lanka

Wijesekera, NTS; Perera, LRH [Article-Abstract]

Inconsistencies and non-homogeneities in the hydrological and meteorological time series could be identified by incorporating statistical tests that detect trends and change points. Inconsistency which reflects systematic ...
Evaluation and selection of tools for data migration from non-spatial to spatially referenced software : a case study migration from MySQL to PostgreSQL

Chandramali, EAG; Wijesekera, NTS [Article-Abstract]

Geographic Information Systems and open source software are becoming more and more popular resulting in an increased requirement for data migration from common non spatial software to spatially referenced software. MySQL ...
Potential on the use of GIS watershed modeling for river basin planning : case study of Attanagalu Oya Basin, Sri Lanka

Perera, KRJ; Wijesekera, NTS [Article-Abstract]

Careful management for identifying and allocating available water resources is important, to preserve water for present as well as future users. Modeling at basin scale can provide necessary information on river basin ...
Field Data Collection for Land Information Systems – A Case Study on Quantification of Resource Requirement for a GIS

Chandramali, EAG; Wijesekera, NTS [Article-Abstract]

Field data collection is the most important component for application development. Field data significantly affect the results of a research or a project. Therefore it would consume a substantial period of time unless ...
Existing non-domestic building stock in Sri Lanka : the problem of indoor overheating and environmental retrofitting

Rajapaksha, RMKU; Gamage, W [Article-Abstract]

The paper presents an overview of the thermal performance of existing non-domestic, inparticular, office and institutional buildings in Sri Lanka. The aim of the research is to identify a scientific basis for environmental ...
Barriers to and opportunities for advanced passive cooling in sub-tropical climates

Rajapaksha, RMKU; Hyde, R [Article-Abstract]

The article explores the use of advanced passive cooling in the context of complex non-domestic buildings. Passive cooling involves a number of strategies and when one or more of these strategies are combined they create ...
Effect of inlet morphometry changes on natural sensitivity and flushing time of the Koggala lagoon, Sri Lanka

Gunaratne, GL; Tanaka, N; Amarasekara, P; Priyadarshana, T; Manatunge, JMA [Article-Abstract]

The changes of natural sensitivity in terms of lagoon morphometry, particularly the inlet morphometry and flushing properties of the Koggala lagoon, Sri Lanka, are presented in this paper. The morphometric assessment is ...
Are Green jobs sustainable for Sri Lankan Economy?

Jayaweera, M; Manatunge, JMA; Witharana, A [Article-Abstract]

It is imperative that Sri Lanka grasps the concepts of green jobs to meet the most vital but intricate challenge of the 21st Century, which is the transformation to a sustainable and a low-carbon economy. Such a transformation ...
Dealing with algal toxins and dissolved organics in drinking water

Ratnayake, N; Manatunge, JMA; Hapuarachchi, DP [Article-Abstract]

Several types of cyanotoxins found in surface water bodies are recognized as having human health effects, whereas taste and odor affect the palatability of water and give rise to public complaints. Conventional water ...
Assessment of Geothermal Gradient in Bogala Area, Sri Lanka

Nanayakkara, GD; Premasiri, HMR; Attalage, RA

Geothermal gradient gives important assessment to geothermal potential in an area. This study aimed to study geothermal potential in Sri Lankan crust using measurement from available deep mines. Bogala Graphite mines is ...
Artificail Intelligence Based Smart Building Automation Controller for Energy Efficiency Improvements in Existing Building

Basnayake, BADJCK; Amarasinghe, YWR; Attalage, RA; Udayanga, TDI; Jayasekara, AGBP [Article-Abstract]

This paper presents the design and implementation details of an Artificial Intelligent based smart building automation controller (AIBSBAC). It has the capability to perform intelligently adaptive to user preferences, which ...
A multi criterion analysis for renewable energy integration process of a standalone hybrid energy system with internal combustion generator

Perera, ATD; Madusanka, AN; Attalage, RA; Perera, KKCK [Article-Abstract]

Integrating renewable energy into standalone Internal Combustion Generator (ICG) systems is an economical and eco-friendly option. However, previous studies demonstrate the difficulties in replacing the ICGs completely by ...

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