Microsoft Word - New page 1C.docJoint Structural Division Annual Report
2008/2009
AP/RSE/RGE Committee Representative
Ir Dr K S LAW (Chairman of the AP/RSE/RGE Committee) IStructE Council Members
Ir Prof K K CHOY Ir Helen P J KWAN Sub-committee on IStructE Business
Chairman Ir Prof Paul T C PANG Deputy Chairman Ir Prof Reuben P K CHU Members Ir Dr Francis T K AU Ir C K LAU Ir Dr Eddie S S LAM Ir Thomas K C WONG
IStructE Examiners (Chartered Membership)
Chief Examiners Ir Prof H K NG Ir Dr C K LAU Marking Examiners Ir Helen P J KWAN Ir Dr K S LAW Ir Dr James C W LAU
IStructE Asia Representative
Ir Dr The Hon Raymond C T HO
Chairman Ir S T CHAN Immediate Past Chairman Ir K K KWAN Deputy Chairman Ir C K LAU Hon. Secretary Ir Raymond W M TANG Hon. Treasurer Ir Aldows H C TANG Programme Coordinator Ir Eric P W CHAN Deputy Hon. Secretary Ir Ken K S NG Deputy Programme Coordinator Ir Dr Ray K L SU Members Ir Allan S K CHAN Ir Prof Albert K H KWAN Ir George CHAN Ir Alkin C W KWONG Ir Prof S L CHAN Ir S C LAM Ir Prof S KITIPORNCHAI Ir Y W SIU Ir Dr C M KOON Ir Gabriel L K YU Ir Dr J S KUANG Ex-officio Member (AMC) Mr David S P CHEUNG Ex-officio Member (YMC) Ir Iman W M LAI Ex-officio Council Member (Div) Ir Prof Paul T C PANG Ex-officio Discipline Rep (Div) Ir Prof K K CHOY Co-opted Members Ir Paul K H LEE
Ir Dr C K LAU Ir Prof Fred S H NG
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Technical Meetings
Date Details
3 Jun 2008 “Lessons Learnt from the Sichuan Earthquake” by Dr H H Tsang and Ir Dr Ray K L Su, HKU
5 Jun 2008 “Post-earthquake Safety Evaluation of Buildings” by Ir Andrew Mole, Ove Arup & Partners 27 Jun 2008 “The Venetian® Macao Resort Hotel” by Ir Anthony Chiu, Ove Arup & Partners 17 Jul 2008 “Seismic Retrofit of Concrete Structures” by Ir Prof Jin-guang Teng, HKPolyU
25 Aug 2008 “The Structural Design of MegaBox – Enterprise Square 5” by Ir Chupman Pun, Siu Yin Wai & Associates Ltd
17 Sep 2008 “The Design and Construction of the Hong Kong Science Park Phase 2” by Ir Adam Choy, Meinhardt Consulting Engineers (jointly with Building Division)
20 Oct 2008 “Seismic Vulnerability Assessment of Tall Buildings with Soft Storeys” by Ir Dr J S Kuang and Mr Y.B. Ho, HKUST
10 Nov 2008 “The Design and Construction of MGM Grand Macau” by Ir Wilson Cheung, Siu Yin Wai & Associates (International) Ltd
8 Dec 2008 “A 10,000-piece Precasting Challenge in Redevelopment of Kwai Chung Flatted Factory - Structural and Volumetric Precasting for 41-storey Public Housing Blocks” by Ir S W Sham, Hong Kong Housing Authority
19 Jan 2009 “Code of Practice for the Structural Use of Steel 2005 - Use of Steel Materials” by Ir Prof Paul T C Pang, Buildings Department (jointly with HKPolyU)
9 Feb 2009 “The Construction of The Hong Kong Convention and Exhibition Centre Expansion” by Ir K H Mok and Ir Eric K M Lau, Hip Hing Construction Company Ltd
2 Mar 2009 “Ductility Design of High Strength Concrete Columns” by Ir Prof Albert Kwan and Ir Dr Johnny Ho, HKU
1 Apr 2009 “The Effect of Topography and Urban Development on Wind Flow Pattern” by Ir Prof Edmund Choi, CityU
6 Apr 2009 Presidential Address “Our value to society in a changing, competitive world”, by Dr Graham Owens, President of the IStructE
4 May 2009 “Behaviour of Restrained Steel Beams and Slabs in Steel and Composite Building Frames in Fire” by Prof Mark A Bradford, University of NSW (jointly with HKU)
29 May 2009 IStructE Gold Medal Address 2009 “They all want to be Brunel”, by Prof David Nethercot 29 Jun 2009 “Fire Engineering Design Review” by Ir Dr Longde Zhao, Warrington Fire Research
Seminars
Date Details
30 Aug 2008 Half-day seminar on “512 Wenchuan Earthquake: Field Investigation and Re-construction of Damaged Regions” (jointly with HKUST & HKU)
22 Nov 2008 Half-day seminar on “The Wenchuan Earthquake Damage Assessment and Seismic Code Revisions” by Prof Wang Ya-yong (jointly with ASCE, Ove Arup & Partners, CityU)
7 Mar 2009 Half-day seminar on “Examination Technique for the IStructE CM Part 3 Examination”
8 Jun 2009 Annual Seminar on “State-of-the-art Performance Based Design Methods – Global Perspective and Overview”
Visits
Date Details
4 Oct 2008 Half-day technical visit to “Hong Kong Convention and Exhibition Centre Expansion Project” by Ir Patrick Tso, Hip Hing Construction Company Ltd (jointly with YMC)
21 Feb 2009 One-day technical visit to “Avic Plaza () and The Universiade Sports Center () in Shenzhen” by Ir Adam Choy and Mr Zhouzhan, Meinhardt Consulting Engineers
8-11 May 2009 Annual Technical Visit (2008/09) to Ningbo, China
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Annual Report 2008/09
I am pleased to report that the Joint Structural Division (JSD) has attained a membership of 5,512 including 2,095 Fellows and Members, of which 1,921 are Chartered Members of the IStructE. Committee Activities The JSD organizes a wide spectrum of activities throughout the year which include:
Monthly Committee Meetings Technical meetings and site visits covering a range of topics Structural Excellence Award Annual Dinner Annual General Meeting Annual Visit Annual Seminar
Major Events The Annual Dinner was successfully held on 10 October 2008 at the Holiday Inn Golden Miles with a full house of over 400 members and guests. The Special Award is re-branded as the Structural Excellence Award to better reflect its objective in promoting excellence in structural engineering and achievement by structural engineers. Winners of the Structural Excellence Award 2009 were ruled on 24 March 2009 by the Judging Panel after presentations by the finalists and site visits. There are one Grand Award and one Commendation Award each for both the Hong Kong Projects and the Mainland/Overseas Projects. For the Annual Visit, we have planned to visit Ningbo on 8-11 May 2009. The visit will be led by senior members and we are expecting fruitful interaction with our mainland counterparts. The Annual Seminar this year will be held on 8 June 2009 with the title “State-of-the-Art Performance Based Design Methods – Global Perspective and Overview”. Renowned local and overseas speakers from prominent professionals and academia will share their insights and experience in this subject. Structural Engineers in the Society Subsequent to the 512 Sichuan Earthquake in 2008 and in response to the request by Hong Kong engineers in particular those who would like to contribute or devote themselves as volunteers for the reconstruction works, JSD has organized a series of activities on earthquake related topics. The JSD has been actively involved in the HKIE Task Force on 512 Earthquake Relief, including commenting on Feasibility Study Reports and attending Expert Meeting at Chengdu for the Wolong Reconstruction projects funded by the HKSAR Government. JSD together with various HKIE
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Divisions have worked jointly with Sowers Action () on two HKSAR Government funded school re-construction projects in Sichuan. Volunteers have been recruited for on-site assessments, design review and supervision monitoring. With the biennial Quality Building Award (QBA) being one of the major events of the construction industry, I am delighted to report that JSD will be the Chairing Institution for the QBA 2012, and as promised, JSD will showcase a unique and successful QBA in 2012. The Chairman of the JSD in 2010 will formally take up the chairmanship of QBA 2012 in the QBA banquet in 2010. Professional Recognition and Training On the Reciprocal Recognition Agreement between the HKIE and the National Administration Board of Engineering Registration (Structural) of the Ministry of Construction, the fourth reciprocal recognition assessment was held in Guangzhou on 18-22 September 2008. 70 candidates from Hong Kong attended the assessment with 62 obtained the PRC Registered Structural Engineer Class I qualification. Talk on future reciprocal recognition agreement after the expiry of the current one was held in Beijing in early 2009. With funding just approved by the Commerce, Industry and Technology Bureau under the Professional Services Development Assistance Scheme, a Professional Development Programme in Seismic Engineering for Structural Engineers with seminars and workshops will be organized by JSD to enhance local engineers’ knowledge and skills in seismic engineering. IStructE Matters Dr Graham Owens, President, and Mr. Martin Powell, the new Chief Executive, of the IStructE, visited Hong Kong in early April 2009. The Presidential Visit provided a good opportunity for exchange of views on matters of common interest and for familiarization with Hong Kong matters for the President and the new Chief Executive who only assumed his office in February 2009. As in the past years, the President addressed the members in Hong Kong and presented certificates to newly elected Fellows and Chartered Members. This demonstrated the strong support and encouragement by the Institution to our new fellows and members, making this a memorable event in their career. Under the new IStructE Constitution, the Division Chairman is an ex-officio member of the IStructE Council. Our two elected members on the IStructE Council, Ir Professor KK Choy and Ir Helen PJ Kwan, and I would continue to serve as an important link between IStructE Headquarters and Hong Kong. The Chartered Membership examination was held in Hong Kong on 17 April 2009 with a total of 246 candidates. Appreciation The activities of the JSD can only be realized with the unfailing support of our members and committee members. I would like to express my heartfelt thanks to all who have devoted their time and energy to organize activities of the JSD. Ir S.T. Chan Division Chairman
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Awards H K Cheng Award is sponsored by Ir Dr Cheng Hon-kwan to recognize the best Hong Kong candidate who scores the highest marks in the Chartered Membership (Part 3) Examination of the Institution of Structural Engineers and the best Hong Kong candidate in 2008 is Mr Lee Kai-pong. Sponsored by structural engineering firms in Hong Kong, 4 Best Student Awards have been announced to commend our undergraduates who demonstrated excellent overall academic results and high level of competence in structural engineering.
Sponsors Awardee Meinhardt (HK) Limited Mr Wong Kwan-lok, University of Hong Kong Ove Arup & Partners HK Ltd Miss Law Wan-ki, Hong Kong Polytechnic University Siu Yin Wai & Associates Mr Yuen Yu-ping, Hong Kong University of Science and Technology T K Tsui & Associates Ltd Mr Yeung Chun-lam, City University of Hong Kong
Best Reporter Award was introduced in November 2005 to encourage participation in events organized by the Joint Structural Division; to promote interests in the respective themes of the events; and to promote report writing skills among members. Winners of the Best Reporter Award for session 2008/2009 are as follows.
Date and type of event Winner 7 May 2008 (Annual Seminar) Miss TONG Man Man 5 Jun 2008 (Technical Meeting) Miss TONG Man Man 25 Aug 2008 (Technical Meeting) Mr KWOK Kui Wah 30 Aug 2008 (Half-day Seminar) Miss TONG Man Man 21 Feb 2009 (Technical Visit) Mr WONG Ping Yiu 7 Mar 2009 (Half-day Seminar) Miss HO Fung Yuen
Photos from left to right: Ir KK Kwan presenting the Best Student Award to Miss Law Wan-ki;
Ir YW Siu presenting the Best Student Award to Mr Yuen Yu-ping; and Ir TK Tsui presenting the Best Student Award to Mr Yeung Chun-lam.
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Structural Excellence Award 2009 The Structural Excellence Award (formerly Structural Awards) aims to promote excellence in structural engineering demonstrated through the design and construction of buildings and structures in the last few years. There are two categories of awards – Hong Kong Projects and Mainland/Overseas Projects. The first award was held in 1998/1999 and this is the eleventh event. On 14 March 2009, the Judging Panel met together and after lengthy discussion short-listed the finalists. Following site visits to Hong Kong Projects and presentations on Mainland/Overseas Projects on 28 March 2009, four awards were decided based on the following assessment criteria: aesthetics, engineering approach, integration, economy, innovation, buildability, unique features, sustainability and serviceability. Hong Kong Projects • Grand Award: One Island East
Structural Engineer: Ove Arup & Partners Hong Kong Limited • Commendation Award: Discovery College
Structural Engineer: Maunsell Structural Consultants Limited Mainland/Overseas Projects • Grand Award: The Beijing National Stadium, Beijing
Structural Engineer: Ove Arup & Partners Hong Kong Limited • Commendation Award: Grand Lisboa, Macau
Structural Engineer: Maunsell Structural Consultants Limited Finalists • The Hong Kong Centre for Youth Development
Structural Engineer: Ove Arup & Partners Hong Kong Limited • Landmark East
Structural Engineer: Mott MacDonald Hong Kong Limited Members of the Judging Panel Ir Prof Paul PANG Tat-choi, Chairman Ir Prof CHU Pui-kwan, Reuben Ir Dr The Hon HO Chung-tai Raymond Ms Anna KWONG Ir Dr LAU Ching-kwong Ir Prof TENG Jin-guang Ir WAI Chi-sing
Organizing Committee Ir C K LAU, Chairman Ir Prof S L CHAN Ir S T CHAN Ir Dr C M KOON Ir Dr Eddie S S LAM Ir Ken K S NG Ir Aldows H C TANG Ir Raymond W M TANG
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Joint Structural Division Structural Excellence Award 2009 Hong Kong Projects Grand Award Ove Arup & Partners Hong Kong Limited for the One Island East
Structural, Geotechnical, Civil, Façade and Fire Engineers Ove Arup & Partners (Hong Kong) Limited
Developer Swire Properties Limited
Building Services Engineers Meinhardt (Hong Kong) Ltd.
Main Contractor and Construction Advisor Gammon Construction Ltd.
Foundation Contractor Tysan Foundation Limited
Façade Contractor Josef Gartner & Co. (HK) Ltd. One Island East is situated at 18 Westlands Road, Quarry Bay, Hong Kong comprises of a 68-story first class office building. This building has 2-level basement of overall depth of around 12m which provides carpark, loading and unloading facilities and plantrooms. The gross floor area for the development is approximately 145,000m². The building is approximately 308m high. Currently, it is the sixth tallest completed building in Hong Kong and is the new landmark of the district.
The building consists of a central core wall coupled with 8 numbers of reinforced concrete mega columns through steel outrigger trusses located on 36/F to 40/F. The whole building structure is supported by reinforced concrete raft which sits directly on bedrock. The typical office floor, with structural span of 14m by 21m, comprises of 285mm thick post-tensioned flat slab with peripheral thickening various from 500mm to 650mm.
This saved 450mm structural depth or increase clear headroom by 100mm if a conventional beam-slab system had been used. The columns at the uppermost floors have been raked sideway to “open up” the corners facing North and South to provide better view. As a result, the structural span has been increased up to 27m. A complex composite pre-stressed concrete and steel floor system has been used to maintain the structural depth and the clear headroom. Due to the large span-depth ratio, structural dynamic response analysis of the floor was carried out to ensure the floor vibration is within the acceptable limit.
A unique, innovative and elegant glass wall design has been employed at the main lobby on the ground floor. The overall height of the glass wall is around 17.6m. The lowest 3.1m portion is free of glass fin to provide unobstructed free space. The glass fins are hanging from 2/F and laterally supported by 1/F structures. One Island East is the first project in Hong Kong using SPG interlayer laminated glass to improve the bending strength of the laminated glass panel.
To minimize the depth of the opaque spandrel and improve the transparency of the curtain wall of typical floor viewing from the outside, fire engineering approach has been adopted to reduce the spandrel depth from 900mm to 650mm.
Environmental protection, global warming, etc. are the world’s top issues. The structural designs have taken this consideration consciously. To this aim, in addition to design for minimal materials, grade 100 concrete and Building Information Model (BIM) are used.
One Island East is the pioneer building project making extensive use of grade 100 high strength concrete in walls and columns. Compared with grade 60 concrete, 14,000m3 concrete is saved. In return, the usable floor area is increased by 3,700m2. Construction material transportation and other related activities were also reduced. CO2 emission and waste generation are reduced by 3,500 tons and 1,200 tons respectively.
The Client pioneered the use of BIM in this project at the start. BIM has been used in design co-ordination; checking of critical structural details; automatic clash identification; visualization; Bill of Quantity preparation; documentation link; etc. With the use of automatic clash identification, It is estimated that over 250m3 abortive materials and more than HK$10M have been saved.
With the use of the BIM, the complex outrigger details have been reviewed three-dimensionally.
Potential problems have been identified and resolved in
advance much easier. It was estimated that approximately 20 days have been saved in the construction of outrigger as compared with traditional planning method.
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Joint Structural Division Structural Excellence Award 2009 Mainland/Overseas Projects Grand Award Ove Arup & Partners Hong Kong Limited for Beijing National Stadium
Structural and Geotechnical Engineering Consultant Ove Arup & Partners Hong Kong Limited Client National Stadium Company Limited Architect Herzog & de Meuron Architekten / ArupSport / China Architectural Design & Research Group Local Design Institute China Architectural Design & Research Group Main Contractor Beijing Urban Construction Group Co. Ltd. The Beijing National Stadium was the main stadium for the XXIX Olympiad, 2008. The opening and closing ceremonies of the Olympic Games, the track and field events and the football final were all held here. The stadium was designed to a permanent seating capacity of 80,000 and another 11,000 temporary seats. The total gross floor area of the stadium is 258,000 m2. The stunning and sculptural form of the iconic roof, is the result of integrated architectural and structural designs. Architectural Form of the Roof - the “Nest”
The unique form of the Bird’s Nest was an inspiration of the Chinese crackled glazed pottery. The members appear to be arranged in a chaotic manner. One of the architectural design requirements was to have box sections of constant size at 1.2m x 1.2m for the members on the roof and façade surface. The constant member width would blur the distinction between primary and secondary members. Thus the visitors and spectators would be unable to distinguish the structural member hierarchy, and get a feeling inside a “Nest”. Structural System of the Roof and façade / Column The envelope around the whole stadium integrates the roof and façade in a sculptural form with a hierarchical
structure. The primary structure comprises a 3-D portalised space truss: 24 column trusses at the periphery supporting 48 main trusses spanning over the bowl and the field. The main trusses are 12m deep, measured centrelines of top and bottom chord members. The spans of the main roof in the long and short directions of the elliptical plan are 313m and 266m respectively. The secondary structures are the beams/elements located only in the outer layer of roof and façade. They subdivide the panels between the primary trusses and act as braces. They also form supports for the sub-frames of roof membrane. The other elements contributing to the overall geometry and structural form of the envelope are the perimeter stairs that run continuously from ground along the definition lines of the façade and over the roof surface to join the façade on the opposite side. Structure is Architecture
The “Bird’s Nest” is recognised as an engineering and architectural masterpiece by the World. The Project proved the talent of structural engineers to solve complex building design. Innovative and Advanced Technology Design Use of advanced 3-dimensional computer software such as Rhino and CATIA programs to enable realisation of the pure geometry design of the Bird’s Nest. Beijing is in an area of moderately high seismicity. Performance-based seismic design approach was adopted and the advanced non-linear finite element analysis software LS-DYNA was used to verify the design and justify the collapse prevention performance objective. Detailed constructability scheme is developed followed by the construction stage design analysis to capture the true structural behaviour of the structure. Value Design The project was highly ambitious, not only in delivering a world-class sports facility and a successful venue for the Games, but also in creating an icon for the new Beijing: it is both a monument for celebrating the great performance of athletes and a great civic venue for citizens to enjoy in the many years after the Olympics. The success design of the Bird’s Nest becomes the centre of focus in the Olympic Green. For the engineering designers it was the perfect structure to stretch innovative thinking and break new ground in the application of technologies. The Bird’s Nest has turned a new page of architectural / structural design and is a great example on structural engineers’ capability to solve complex structural design.
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Joint Structural Division Structural Excellence Award 2009 Hong Kong Projects Commendation Award Maunsell Aecom Group for the Discovery College
Structural Engineers Maunsell Structural Consultants Ltd. Developer English Schools Foundation Architect Integrated Design Associates Ltd Contractor Hanison Construction Co. Ltd. The Discovery College, operated by the English Schools Foundation, is a prestigious international primary cum secondary school situated along the seaside of Discovery Bay in Hong Kong. The school has two main blocks arranged in a horse-shoe configuration. The Teaching Block houses classrooms, specialist teaching rooms, faculty offices and administration offices. The Specialist Function Block houses the gymnasium, sports hall, performing arts centre and swimming pool. Lantau Island is referred to “the Lungs of Hong Kong” because of its abundance of natural vegetation and scenic terrain. The major challenge for the Project is to demonstrate the benefits of environmental integration to our next generation life styles by means of innovative design and advance technology. Therefore, the initial design concept from the architect and the structural engineer is to adopt a simple structure for the Discovery College. The architect and engineer are encouraged to build a better and harmonized ETFE roof structure that will integrate with the surrounding natural terrain. The structural form used to form light filled spaces, is of a particular quality and streamline curvature. The structural elements express a highly aesthetic and sustainable form. It consists of air inflated cushions of three layers of modified copolymer Ethylene Tetra Fluoro Ethylene (ETFE), which provides good thermal insulation, allows energy savings, and protects the school from inclement weather conditions. A large deflection type non-linear finite element analysis was
applied for the ETFE membrane. The membrane stresses generated by inflation and wind loads define the overall geometry, the maximum span, radii of curvature and the thickness of the foils. The engineer and architect have enthusiastic mission to understand each other’s respective fields and goals during the design process. Regular workshops and conferences allowed these common goals and innovations to develop into a harmonized roof canopy. The shape of the supporting steel frame at roof is the result of architectural-structural interaction to achieve the most effective structural form against wind load. References were made to various international Codes of Practice to obtain the most appropriate wind load coefficients for the non-linear nature of the roof surface. Considerable effort has been made to maximize the use of bolt connections, which will improve the overall buildability, durability and environmental friendliness. Our successful collaboration between engineer and architect leads to have less construction costs, resist loading efficiently thus saving material, encourage sustainability and have easy maintenance. The window wall system adopted a special hinge joint, which allows effective distribution of wind load imposed on the wall to two levels of structural supports and save costs. The typical module of the system indicates the absorption of the vertical movement of the roof without transferring the vertical loads from roof onto the wall. The stability of the complete glass wall system was checked using a second-order analysis with code- recommended values for frame and member initial imperfections. The responses of the structure were checked by a simulation-based design concept, which is one of the most advanced design techniques in building structures. Site formation and foundation works for the building is kept to a minimal to avoid affecting the surrounding environment. Retaining wall, abutment wall and cut slope are adopted to cater for the level difference between the building site and the surrounding area. This can minimize costly large scale foundation works. The use of open planning, landscaped terraces and green roof garden to integrate with the natural environment compensate the loss of green area. The soil and plants are a good absorber of heat which will provide energy savings for the school building interior.
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Joint Structural Division Structural Excellence Award 2009 Mainland/Overseas Projects Commendation Award Maunsell Aecom Group for Grand Lisboa
Developer Sociedade de Jogos de Macau Structural Engineer Maunsell Structural Consultants Ltd Architect Dennis Lau & Ng Chun Man Architects & Engineers Management Contractor Hip Hing Construction Co. Limited Main Contractor Zhu Wah Construction Co. Limited Grand Lisboa Macau is a multi-functional recreation project at Macau’s former Worker’s Union Stadium. Set across from the original Hotel Lisboa, this building is the reincarnation of the original Lisboa's magic which comprises one 44-storeys hotel tower on eight level podiums with four levels of basement. It is the first building with spectacular shape among South East Asia region. The building shape was modeled as a bright golden lotus leaf set upon an eight-story elliptical- shaped podium. The podium houses the entertainment facilities and restaurants while the lotus leaf contains the 420 hotel rooms. A footbridge and tunnel are linked
between existing Lisboa Hotel and Grand Lisboa across Avenida De Lisboa. Moreover, structural provision is allowed in the podium for future Phase 3 development. The 15m long multi-level overhanged structures were adopted for the spectacular building shape of tower. Reinforced concrete wall beams, inclined steel columns and steel floor beams forming composite structures were used under the limitation of storey height and structural zone. It achieves long-span cantilever without increasing the structural zone. This also reliefs the false work requirements so that the building construction can achieve three days cycle for the typical floors with such complicated building form. Fiber-reinforced polymer concrete was sprayed on metal decking to form the external façade of the elliptical- shaped podium shell structure, instead of conventional concreting method. It provides a sound structural form to reduce the structural depth of the roof enclosure with good water tightness and also high adhesion and design strength for fixing of the external LED lighting screen. Composite twin trusses were adopted for the 40m long span steel podium structure. The concrete infill between the twin steel trusses to form composite action not only enhances the bulking capacity but also improves the performance of vibration control. The twin trusses design reliefs the requirement of lifting for a single heavy steel truss member during construction and provide higher headroom for creating luxury space for the entertainment facilities. A complex combination of wide range of sub-structural techniques comprised of load bearing diaphragm wall, different types of piles, underpinning and rock bolts were adopted to cope with the highly variable strata. Temporary steel columns and top-down construction were used within podium area while conventional bottom up construction was adopted on the central core to meet the fast-track construction programme and minimize the ground movement. Grand Lisboa becomes the landmark of Macau and the project introduces engineering excellence into Macau construction industry.
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Joint Structural Division Structural Excellence Award 2009 Finalists Ove Arup & Partners Hong Kong Limited for Hong Kong Centre for Youth Development
Structural, Geotechnical and Civil Engineering Consultant Ove Arup & Partners HK Limited Client Home Affairs Bureau / Architectural Services Dept. Consulting Architect P&T Architects and Engineers Ltd. Design Architect Meta4 Design Forum Ltd. Main Contractor China State Construction Engineering (HK) Ltd. The Project consists of a 14-storey Youth Centre Building and a 12-storey Hostel Block linked together. The Youth Centre consists of the basement auditorium, 1/F exhibition platform and the theatrical studio, retail, dance studio, I.T., multi-purpose area at the upper floors and hostel facilities at the top few floors. The height of the development is about 80 metres above ground level. The lateral load resisting system of the Youth Centre is provided by the two lift cores and the outer ring beam- column frame. The Hostel Block is of shearwall design for the lateral load resistance and gravity load transfer. At level 2, the prestressed concrete box girder is designed to span 32 metres and over the existing MTR Viaduct to the supporting staircore and columns. To achieve the column free space at G/F, two double storey steel transfer trusses are designed to span 36 metres at 2/F to support the columns spaced at 12 metres grid from above. The steel transfer truss design is selected instead of concrete transfer structure for the reason of passage penetration required at the floor levels. The Hostel Block is positioned above the existing MTR Viaduct. A prestressed box girder, maintenance free and torsionally stiff structure of 7 metres deep is designed to span 32 metres over the Viaduct to support the hostel building. The void space inside the box girder is utilized effectively for E&M space to house sprinkler and water tanks.
Mott MacDonald Hong Kong Limited for Landmark East
Structural and Geotechnical Engineer Mott MacDonald Hong Kong Limited Developer Winsor Properties Holdings Limited Project Manager USI Holdings Limited Concept Architect Arquitectonica Architect Arthur C S Kwok & Associates Limited Foundation Contractor Gammon Construction Limted Superstructure Main Contractor Paul Y Engineering Builders Limited Landmark East, a Grade A office development in the heart of Kwun Tong industrial district, consists of two 200-m high leaning towers. The towers are linked by a landscaped ground floor and a 2-level basement car park. The structure of the building consists of the following features: - Inclined columns to different directions to express the
architectural intent. - Use of outrigger system to enhance the structural
efficiency. - Use of high strength concrete and post tensioned
beams to reduce the structural member size and increase office internal headroom.
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Snap shots of activities
Organizing Committee of Annual Visit Ir Aldows H C TANG, Chairman Ir Ken K S NG, Secretary Ir Prof S L CHAN, Senior Adviser Ir Dr Eddie S S LAM Ir Raymond W M TANG (Right: Annual Visit 2008 to Nanjing)
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Annual Dinner, 10 October 2008
Photos from left to right: Mr Yue Chi-hang, Guest of Honour; Ir S T Chan, Division Chairman; and Ir Dr C M Koon, Chairman of Organizing Committee
Toasting by Division Committee to all guests
Organizing Committee of Annual Dinner Ir Dr C M KOON, Chairman Ir Ken K S NG, Secretary Ir Eric P W CHAN Ir Prof S L CHAN Ir Dr Eddie S S LAM Ir Dr Ray K L SU Ir Aldows H C TANG
Organizing Committee of Annual Seminar Ir S T CHAN, Chairman Ir Aldows H C TANG, Secretary Ir Prof S L CHAN Ir Dr C M KOON Ir Dr Eddie S S LAM Ir C K LAU Ir Ken K S NG Ir Raymond W M TANG
Site Visits
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Dr Graham Owens (front center-left), Mr Martin Powell (front center-right), Division Chairman and Deputy, IStructE Sub-committee Chairman and Deputy, Council Members and new Members
Dr Graham Owens presenting certificates to new fellows Ir S T Chan (left) and Ir Benny Lai (Center), and HK
Cheng Award to Mr Lee Kai-pong (right)
Visiting the Chartered Membership Examination Centers on 17 April 2009
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Joint Structural Division List of Chairmen
Session Name of Chairman 1st 79/80 Ir TSUI Tack Kong 2nd 80/81 Ir Prof Fred NG Sai Ho 3rd 81/82 Ir Dr Raymond HO Chung Tai 4th 82/83 Ir Andrew NGAI Bick Yau 5th 83/84 Ir David George HOLMES 6th 84/85 Ir Brian POON Hon Yin 7th 85/86 Ir David CHAN Wing Keung 8th 86/87 Ir Barry John STUBBINGS 9th 87/88 Ir Dr LAW Kwok Sang
10th 88/89 Ir Patrick YIM Chun Nam 11th 89/90 Ir Dr Joseph CHOW Ming Kuen 12th 90/91 Ir Bruce Malcolm FOX 13th 91/92 Ir TSE Pak Kin 14th 92/93 Ir Ricky SO Yau Chi 15th 93/94 Ir Hugh WU Sai Him 16th 94/95 Ir Ignatuis LAU Yik Sum 17th 95/96 Ir WONG Chi Ming 18th 96/97 Ir CHEUNG Kwok Ming 19th 97/98 Ir Prof KO Jan Ming 20th 98/99 Ir Prof James LAU Chi Wang 21st 99/00 Ir Kenneth LAU Kwong Hon 22nd 00/01 Ir Prof Reuben CHU Pui Kwan 23rd 01/02 Ir Prof Paul PANG Tat Choi 24th 02/03 Ir Johnny FAN Siu Kay 25th 03/04 Ir Helen KWAN Po Jen 26th 04/05 Ir Joseph MAK Yiu Wing 27th 05/06 Ir Prof CHOY Kin Kuen 28th 06/07 Ir CHENG Yan Kee 29th 07/08 Ir KWAN Kin Kei 30th 08/09 Ir CHAN Siu Tack
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