WS Atkins plc is a British multinational engineering, design, planning, project management and consulting services company headquartered in Epsom, United Kingdom. It was founded in 1938 by Sir William Atkins.As of 2013, Atkins is the largest engineering consultancy in the UK and the world’s fifteenth largest design firm by revenue. It employs approximately 17,500 staff based in 300 offices across 29 countries and has undertaken projects in over 150 countries. Its motto is "Plan, Design, Enable".Atkins is listed on the London Stock Exchange and is a constituent of the FTSE 250 Index. Wikipedia.
Rohit D.H.H.,WS Atkins |
Narahari P.,Bharat Heavy Electricals Ltd. |
Jaiswal A.K.,EON Designers |
Murty C.V.R.,Indian Institute of Technology Madras
Indian Concrete Journal | Year: 2012
Current code IS 13920:2002 for ductile detailing of concrete structures assumes that moment capacity of a RC structural wall with boundary elements is the sum of moment capacity of the web portion of the wall and that due to the couple using axial capacity of the boundary elements and lever arm between them. This assumption leads to gross over-estimation of design moment capacity of the wall. In this paper, provisions are reviewed and improvements suggested eliminating this deficiency in the code provisions. A nonlinear method is suggested based on principles of mechanics for estimating the combined Pu-Mu strength envelope, considering the combined contribution of the web and boundary elements of the wall. Using this, a numerical study was performed of moment capacity of RC structural walls (both with and without boundary elements) to demonstrate that superposition principle is not acceptable in the design of RC structural walls with boundary elements.
Devalla J.,WS Atkins |
Biswas S.,Indian Institute of Technology Roorkee |
Ghosh I.,Indian Institute of Technology Roorkee
Procedia Computer Science | Year: 2015
Countdown timers are being installed at major intersections of India cities without analyzing their influence on intersection safety and efficiency. This study tries to investigate the effect of green signal countdown timer (GSCT) component on the vehicular approach speeds. Two approaches of two different signalized intersections, one with countdown display and another without it, have been studied for the present study. Presence of GSCT is found to be linked with fewer red light violations (RLVs) cycles, lower number of mean RLV per RLV cycle, higher vehicular speeds during the phase transition at different locations upstream to the stop line, more number of speeding cars, and higher stop line crossing speed during amber. Overall, GSCT encourages drivers to travel with higher speed which could lead to accidents. This observation makes researchers skeptical about its real effectiveness. An additional safety based study can provide better insight about the utility of GSCT. © 2015 The Authors. Published by Elsevier B.V.
Loganathan M.K.,Indian Institute of Technology Delhi |
Gandhi M.S.,WS Atkins |
Gandhi O.P.,Indian Institute of Technology Delhi
Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture | Year: 2015
A complex system, be it a manufacturing system or otherwise, is prone to abnormal functioning, as its units or elements experience unpredictable functional variation. Determining the likely root causes of its undesirable functional events is required to carry out cause analysis of the system from functional point of view. Although the manufacturers provide some information in the manual in this regard, yet these are not conclusive and fall much short in guiding the users in functional cause analysis. Structure plays an important role in this objective. In this article, a procedure for functional cause analysis of a complex manufacturing system through structure is presented using digraph models. 'Function event digraph' is defined for a complex manufacturing system at its various hierarchical levels by considering its input and output functions and their interrelations. A top or undesired functional event for the system is identified from its digraph model, and its root causes are obtained by developing 'functional cause analysis tree'. The suggested approach helps designers and practicing engineers in functional cause analysis of manufacturing systems and thus leading to reliability enhancement and sustenance. An example of a complex CNC (computer numerical control) grinding machine is illustrated to demonstrate the methodology. © IMechE 2014.
Berahman F.,WS Atkins
Structural Design of Tall and Special Buildings | Year: 2013
The Icon Hotel, which is part of the Dubai Promenade in Dubai, is a new waterfront development and represents cutting edge architecture. This building has a unique 'donut shape' with significant design and buildability challenges in the field of structural engineering. The wheel shape tower is 160 m high with an external diameter of 165 m, an internal diameter of 78 m and a depth of 35 m. It was designed to accommodate hotel and residential occupancies. The building's primary structural system is composed of two concrete core walls placed 96 m apart on either side and partially coupled by mega steel trusses at upper mechanical floor as well as long-span steel arches located at the top to accommodate the required shape of the building. This paper presents the structural engineering design approach used to evaluate the seismic behaviour of this building by implementing performance-based design methodology. The analysis results show that the building will behave in a desired manner during future anticipated earthquakes. Copyright © 2010 John Wiley & Sons, Ltd.
Bharath K.N.,GM Institute of Technology |
Pasha M.,GM Institute of Technology |
Nizamuddin B.A.,WS Atkins
Journal of Industrial Textiles | Year: 2016
Destructive methods, viz. tensile test, bending test, water absorption test, chemical absorption test, and biodegradable test of woven sheep fiber reinforced with 40% and 50% epoxy composites, were studied at different operating conditions. The present investigation is focused on the physical and chemical characterization of the sheep wool fiber-reinforced polymer-matrix composites. Result shows that tensile and bending tests of woven sheep fiber composite of composition (50–50) have high strength and maximum bending compared to woven sheep fiber composite of composition (60–40). The (50–50) composition is having more moisture absorption than (60–40) composition, whereas (60–40) composition has more chemical absorption than (50–50) composition. Biodegradable test shows that compositions (50–50) and (60–40) after few days gain almost the same amount of weight. Destructed surfaces were examined using scanning electron microscope. © 2014, © The Author(s) 2014.