ADOPTING A PROGRAM MANAGEMENT APPROACH TO MAXIMIZE THE BENEFIT OF 'VERTICAL CITIES' - Arcadis
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Tall buildings are bigger, better, faster and more prevalent than ever. Driven by rapid growth in Asia and the Middle East, the race among the world’s cities to build the tallest, ultimate record-busting skyscraper on the planet is fast and furious. But these skyscrapers leave a legacy city beneath, whether that is in the form of an open landscape for development around the Kingdom Tower in Saudi Arabia, or a city prime for redevelopment in the shadow of the Petronas Towers in Kuala Lumpur, a programmatic approach to design and development can ensure this legacy is overwhelmingly positive. Well-executed skyscrapers can By looking at the development But it is not always the case that be a real economic-development as a whole program of works, these vertical cities are simply driver. The Petronas Twin identifying the deliverables responding to urbanization. Towers in Kuala Lumpur, built in required to achieve desired Buildings like the Burj Khalifa 1998, was the world’s tallest business outcomes, managing and the Shanghai Tower are until it was eclipsed by Taipei the interfaces with the often called vertical cities, but 101 just six years later. Whilst surrounding infrastructure and they are not the direct result of it may no longer be the tallest establishing robust planning the demands imposed by highly building in the world, the towers and scheduling, the bigger urbanized space. They are born successfully changed the pictures becomes clearer, as from a city’s burning ambition perception of Kuala Lumpur does the route to benefits to make their mark. An iconic worldwide (Bremner, 2007). realization. Supertall buildings tall building enhances the These world class vertical and surrounding developments global image of the city. It is buildings raise the bar for other are unique projects facing likely to put the city on the buildings in the city, be it malls, unique risks; risk management world map, thereby signaling office blocks or hotels. is at the core of this programmatic and promoting its significant approach. Focusing on trends, economic progress and There is no doubt that forecasting and actively advancement (Ali, 2012). These “Supertall” and “Megatall” managing and mitigating the big, innovative, and distinctively represent a new vision of risk from the outset will have designed skyscrapers are vertical urbanization, but as tangible, measurable and potential game-changers. If the race for grandeur surges, beneficial impacts on the they get it right, these new so does the risk and disruption outcomes for the development developments can attract caused by our increasingly and the wider city environment. phenomenal levels of tourism, unstable and rapidly changing by combining high-end mall planet. The unthinkable is no These outcomes however, are space, offices, hotels and even longer unthinkable, some not solely economic. As our ski slopes and aquariums. of these threats remain population continues to grow unforeseeable and outside of and our resources become However, as these cities get our control. The most effective scarce, another challenge we bigger and more complex, layer way to ensure successful and face in this volatile climate is of enterprise and delivery risks safe delivery in this unpredictable building cities sustainably to are added. The future of the climate is by taking a commercially meet the growing demand. By building is coming at us with led programmatic approach. 2050, the world population increasing speed and intensity, will have grown to nine billion, the difference between the thrill from about seven billion today of victory and the agony of (Risen, 2013). Building vertical defeat is very small. Supertall cities can save energy, support and megatall developments are our growing population and no exception. Minimal deviations preserve our horizontal spaces from plan are compounded and for food production, nature and can have major implications on recreation. the overall performance of the program.
Location The location of a vertical city can be a challenge and a key opportunity. When looking at the global landscape of vertical cities, over the past 50-60 years we have seen an eastward shift in the geographical makeup of the world’s tallest buildings (see figure 1), corresponding to the economic emergence of these nations. Figure 1, The Shift East – How the location of the world’s tallest It is evident from the high rise trends in the Middle and Far East building is changing that these countries use architecture to demonstrate the development Tilburn, J (2014) Supertall B and achievement of their nations. These dynamic structures also uildings 2014, Allianz Global identify opportunities in the development, or indeed the redevelopment, Corporate and Specialty of the cities surrounding these vertical metropolises. The Shift East How location of the world's tallest buildings is changing 30 14 14 14 20 20 19 20 Today, South East Asia (48%) and the Middle East (30%) regions now account for 99% more than three quarters of the tallest 100 buildings in the world In 1930 99% of the Of the world's current 100 Specifically China tallest 100 buildings tallest buildings over half have Half of the is the country with the were located in North been constructed in the past tallest building most tall buildings in the America with 51% in projects by 2020 four years (59). 90% of these top 100 (30) across over New York City alone*. are in China. 15 cities. Meanwhile, 20% Today (2014) this have been built in either of the world’s tallest 50 has decreased to China, wider South East Asia buildings are currently just 16%. (for example, South Korea) or in Dubai. the Middle East.
In countries like China, tall The “wow” factor of being Table 1 shows the average sale buildings are an effective way in the shadow of the tallest and rental rates across selected of housing large numbers of building on Earth has pushed developments of Dubai. Among the people, as the population up land values all around the list of developments, highest rates are achieved for properties migrates from the countryside Burj, creating an economic in the Downtown area. to the cities. In the Middle East, ripple effect that benefits the tall buildings are more of a whole city. Emaar Properties, statement of intent. The Burj the developer behind the Burj, Khalifa represents Dubai’s push have made it the centerpiece of to become a world city, and the a new business and residential costs of its construction need district, charging a premium to be set against that bigger for properties with clear views picture (Langton, 2013). On its of the skyscraper. Even if the own the building represents Burj Khalifa had failed to turn valuable real estate, but the 829 a profit, its presence has raised meter tall structure, which includes the surrounding property value apartments and a luxury hotel, enough to more than offset the is not simply an expensive difference. marketing tool for the Emirates. OFFICE - SALES RATES (AED / FT²) RESIDENTIAL - SALES RATES (AED / RETAIL - RENTAL RATES (AED / FT²) FT²) DEVELOPMENT LOW HIGH LOW HIGH LOW HIGH Premium Area (Burj Khalifa) Downtown Dubai 1,750 2,350 1,800 4,800 180 325 Other Difference Difference Difference Difference Difference Difference Dubai Areas Dubai Marina 1,575 10.0% 1,900 19.1% 1,300 27.8% 2,775 42.4% 130 27.8% 250 23.1% Dubai 1,700 2.9% 2,000 14.9% 1,650 8.3% 2,150 55.2% 165 8.3% 210 35.4% International Financial Centre Jumeirah 1,175 32.9% 1,450 38.3% 1,150 36.1% 1,650 65.6% 120 33.3% 180 44.6% Lakes Towers Conversely, one notable oversight on the Burj development is the Table 1: Average sale and public transportation link. In the hot Arabian sunshine, a 1.5km rental rates across selected walk from the nearest metro station to the iconic landmark and developments of Dubai adjoining Dubai Mall is a result of poor planning and insufficient Faheem, M (2015) CBRE interface management. The distance may seem negligible, but in the height of the summer when temperature can reach above 50°Celsius, the walk is unbearable. The benefit of developing a city in an emerging market that has a relatively flexible landscape with an evolving public transport strategy is to link the two together, promoting the use of the new metro and creating ease of access. Taking a programmatic approach to the whole development would have built this functionality in at an early stage.
The Triple The industry is becoming budget, but that also allows increasingly aware of the costs benefits to be realized and Bottom Line and benefits of building “green.” business outcomes to be Knowledge in this area is achieved. The delivery of major A tall building is not only iconic advancing rapidly, and the buildings is becoming ever in design but economically, higher visibility, status, and more complex, driven by socially, environmentally design quality of tower buildings legislative change (sustainability), impactful. But can a tall means that they are often technological change (BIM) or building ever be sustainable? the forefront of research and the continuous fragmentation We are no longer in the age implementation of sustainable of the design/procure/construct of the high-rise urban ghettos strategies. The adoption of process. This complexity is of the latter half of the 20th LEED-type methods are helping compounded for vertical cities century, tall buildings can offer to develop the efficiency of where the systematic analysis, unparalleled innovation and individual buildings as “products”, mapping and management of exhilaration, with a flurry of though there are many aspects the interdependence between technological advances that of sustainability that are not individual activity and tasks is enable skyscrapers to be just included in these methods. magnified. as green if not greener than When addressing sustainability, their low-rise counterparts it is important to not only look The role of the Program Manager (Ijeh, 2015). There is a balance at the energy efficiency of buildings, is to create the right ‘controls’ to required between creating a but also their relationship to inspire the team to deliver the truly iconic development that infrastructure and their required quality and innovation attracts investment, tourism long-term financial viability. that tall buildings demand, but and promotes a city brand, within a controlled and risk ultimately warranting higher Many key factors need to be assured delivery strategy. Figure rental income, and building taken into consideration as early 1 summarizes five principles of sustainably, environmentally as possible to ensure a safe and program quality assurance used as well as economically. efficient structure is delivered on The Kingdom Tower. not only within time and to Figure 2. The five principles of program quality assurance TEAM Focus on individual capabilities and the relationship between team members and organizations. The creation of high performing teams based upon the principles of collaboration, accountability and shared focus on outcomes. OUTCOMES Defining performance outcomes and PROCESS Tall buildings demand specific focus success factors from a commercial, on the deployment of granular political and social perspective. control processes at all levels of the project that integrate with one another. It is important to establish a controls regime that balances reporting and forecasting techniques. PRODUCT Understanding and defining the DELIVERY Applying a forensic approach to the performance requirements of the mapping of granular tasks, interfaces product to ensure it is translated and dependencies throughout the into the delivery strategy. design/procure/construct/operate cycle. Creating the time for creativity and innovation to overcome delivery challenges.
Health and Safety Figure 3: The Kingdom Tower approach to HSE Assurance Building tall represents many Jeddah Arcadis & Dar Saudi Contractors risks and as a result health Economic Mace (JV) Al-Handasah Binladin Council Consultants Group and safety should always be (the Client) (Contractors) foremost in any construction project. Building a vertical city has to consider the risks as does any other construction STRATEGIC project, but there should also be a focus on key areas, such TACTICAL as working at height, complex lifting operations, access and egress arrangements, perimeter OPERATIONAL working and fire and emergen- cy preparedness. Mitigation measures for these key hazards • Implement a strategic/proactive approach to HSE Management must constantly be reviewed, • Provide leadership at all levels updated and tailored to ensure • Ensure Accountability/Ownership that the risks of working on a • HSE performance monitoring high-rise development are being • Provide education at all levels adequately managed. Figure • Set best practice expectations 1 describes the approach to Health, Safety and Environment (HSE) that was adopted on the Kingdom Tower. As an example the following Of specific importance in the eight key fatality risks have been Middle East is the need for identified on the Kingdom Behavioural Leadership. The Tower in relation to the Behavioural Management of construction methodology: Safety (or BMOS) integrates behavioural strategies and • Lifting operations processes into health and • Work at height safety management systems. Working at all levels of a • Shaft and riser works project or program, BMOS • Building perimeter works analysis promotes safer behaviour • Edge protection and environmental conditions to • Fire deliver continuous improvement in health, safety and business • Electric shock and performance. A BMOS program • Falling materials. creates a systematic approach that defines a set of behaviours For each of these fatality risk to reduce the risk of work- areas prescriptive risk control related injuries. This is achieved standards are then developed this by collecting data on the which are incorporated into frequency of safety critical the safe systems of work. The behaviours, providing feedback application of the standards and reinforcement to encourage can be audited to assure positive behaviour. The data is compliance. also used to identify root causes, facilitate problem solving, and develop recommendations for continuous improvement with particular emphasis on improving communication and awareness at all levels.
Focus on Building Information Modeling design, details and construction (BIM) and other virtual methods can save a lot of time Design Innovation construction services are a and money if managed critical part of executing effectively and efficiently at the The viability of any development skyscrapers. Using these front-end. However, innovations is dependent on costs vs revenue. techniques means more need to be balanced with These factors get ever more efficiencies and accuracy in reliability, fully exploring these complex when building tall. pre-construction planning innovative solutions from the Typically, as the height of a and strategies, and equally start is fundamental to actively building increases so does the important, during construction. assessing, managing and cost of construction. Many of In addition to innovative mitigating the risks. the challenges faced in the methods for coordination of development, design and structural and mechanical On the Kingdom Tower, construction of tall buildings engineering, information can innovative piling techniques focus on finding innovative be extracted from the model were implemented by using a responses to mitigate risks to facilitate estimating, 110m Kelly Bar, manufactured associated with the key cost procurement, clash detection for drilling rigs, this removed the drivers, these must be identified and field management. need for extension pieces to early. The 3-D model can be used be inserted during drilling to identify and avoid safety operations. This cut cycle times Buildings like Kingdom Tower hazards. The use of this for depths down to 100m, a could remain the exception technology can enhance our reduction of 50%, and saved rather than the rule as cost is overall productivity, provide approximately 70 working days. the major obstacle preventing instant clarification and offer developers going much beyond important cost savings in State of the art computerized the one-mile mark. It isn’t the high-rise construction. drilling rigs were used (see engineering, it’s the economics Figure 4), which bettered (Baker, 2008) that is holding Prefabrication is not a new tolerance targets by 50%. back the development of more concept, but architects and On site fabrication of all tall buildings. The reason that engineers are tuning their reinforcement cages ensured many skyscraper schemes never hats to the concept of quality of fabrication and come to fruition is usually the prefabricated skyscrapers to consistency of supply in order business plan. Every time you promote innovation and ‘Lean to maintain schedule. increase the height, the volume Construction’. Due to the Environmental factors were also increases by several times repetitive nature of supertall considers and by recovering the more. The Burj Khalifa is a good construction, even small drilling fluids, which were then example of how to mitigate improvements can have big stored in site tanks and recycled having too much space to sell effects if integrated early using dedicated temporary by keeping the building as enough. Simplifications of storage pond. slim as possible. This can be measured and monitored throughout the design process by using a programmatic approach and analyzing the building’s useable space to keep the design in line with the desired outcomes. Figure 4: The Kingdom Tower computerized drilling rigs. ©Jeddah Economic Company / Sales & Marketing Dept.
A key consideration in the the Burj Khalifa, however design of a vertical transportation Kingdom Tower will contain 57 system in tall buildings is to elevators and 10 escalators and reach the optimum balance the highest elevator will rise between the quality and 660m, with the world’s fastest quantity of lift service provided, double deck Elevators which the capital cost of the lifts ascend at 10.5 m/s from the themselves and the loss of lobby to the observatory level. revenue-earning, tenantable This is made possible by using space taken up by the provision carbon fiber rope technology of lift cores and plant rooms. (Kone Ultrarope) as illustrated This becomes even more critical in figure 5. as buildings become taller than 50–60 storeys. The type of vertical transportation system is often linked to the specific use of the building and may facilitate the requirement for sky lobbies. Double decker lifts, a relatively new technology, have been used in many high rise developments to provide efficient solution to minimize tower core area requirements and meet passenger requirements. The challenge of moving people up and down such tall buildings is one of the reasons why the prospect of a mile-high building becoming a reality appeared almost impossible until the unveiling of Kingdom Tower design. The longest distance it is currently possible to travel in an elevator is 504m, up to 638m in It is challenging for elevators to Figure 5 illustrates of Kone go faster because of the rapid elevator system on the Kingdom change in air pressure over such Tower. ©KONE a distance. Early appraisal of options and development of a strategy that meets specific requirements of building design is critical to avoid costly late design changes or delays caused by inefficient ways of working.
Performance Constant and clear communication of intent throughout the team is Management essential to create a culture that is focused on the expectations The adoption of quality controls and outcomes. Early identification processes and approaches need of the key trends to be monitored to identify and forecast the root and forecasting KPI’s will enable issues that may have a negative the analysis of progress and effect on schedule, cost, quality predict scenarios. On the Kingdom and overall performance. These Tower a specific performance could be human, personality or management regime has been system issues which are slowing adopted to identify trends and things down or preventing quick forecast outcomes (Table 2). implementation. If necessary This is of specific concern for tall issues may need to be micro buildings where the compound -managed and micro-monitored effect of delay to an individual until they are back on track. task can have exponential consequences. REGIME KPI OUTCOME Contractor Submittals with specific focus on: - Design Drawings Duration to complete review Engineer performance - Shop Drawings Approval status Contractor quality - Materials Engineer performance Request for Information Duration to answer RFI Consultant performance Number of NCRs issued Contractor performance Non-Compliance Reports (NCRs) Number of NCRs Closed Construction quality Site Productivity Floor Cycle duration Contractor performance Readiness for inspection Contractor performance Site inspection Approval status Construction quality Health & Safety Accident Frequency Rate Readiness for inspection Table 2: Kingdom Tower Program Management controls framework ©Jeddah Economic Company / Sales & Marketing Dept. In addition to traditional schedule and cost reporting, performance data on the Kingdom Tower is captured on a weekly basis and outcomes are presented in weekly and monthly dashboards (Figure 6). Performance issues are further analyzed and appropriate actions identified to reverse negative trends. This micro- management identifies root Figure 6: Kingdom Tower 3D causes at a more fundamental Logistics Concept level and provides key insight ©Jeddah Economic Company / into performance. Sales & Marketing Dept.
Construction Logistics and Operational Readiness Logistics planning is critical for construction speed. There is a bottleneck at the base of every building built where manpower and materials enter and leave the building. This issue is magnified in the construction of tall buildings where peak flows of resource need access to the vertical site. Adequate hoists must be installed, and their use must be meticulously managed. Experience in operational readiness has proven that it is essential to integrate the “opening and operation strategy” into the design and construction schedule. Early stakeholder engagement with the end users and appropriate authorities is required to meet and manage expectations and avoid delays. For the Kingdom Tower specific areas of focus have been: Systems Analysis Not all systems are equal when it comes to onsite installation and coordination with other trades. Analysis on tall buildings brings a clear focus on hoisting, stocking and area requirements, all of which have an economic effect to the installed system. Emphasis must be placed on buildability, the management of onsite work area requirements and the simplification of systems. Efficient and effective planning of servicing, repair and replacement must be considered along with appropriate ‘Stack effect’ planning. Site Logistics/Crane and Hoisting Scheme Logistics planning is key to streamlining material movement There is a significant cost to workface and eliminating Figure 7: Kingdom Tower 3D Logistics Concept associated with cranes and redundant or inefficient labour lifting strategies. Kingdom Tower and plant. On the Kingdom ©Jeddah Economic Company / uses “Jump Lifts” which were Tower resources will peak Sales & Marketing Dept. invented for the Sears Tower in around 7,000. It is critical to Chicago. By utilizing this system, engage with the design team hoisting is contained within the very early in the process to core eliminating the need to identify areas for material close up curtain-wall sections deliveries and ensure worker out of sequence. This technique welfare is meticulous planned. is not only lower in cost, but See Figure 6: Kingdom Tower it also means that the interior 3D Logistics Concept. hoist is not affected by external weather conditions.
Procurement Methodology Manufacture/Offsite Pre-Assembly Interior Development Phasing / and Timing Manufacturing offsite and using Tenant Special Requirements Tall buildings are unique, techniques for pre-assembly These can have a big impact requiring inventive solutions can save money and time, and on MEP and structural design that are at the cutting edge promote quality control. It is requirements. Identifying of the industry. Using critical to assess the site logistic these as early as possible and manufacturers to help deliver and hoisting plans as this will accommodating for them within these solutions can offer determine extent of off-site the design will eliminate risks an innovative buildabilty assembly. to schedule, cost, and quality, advantage. This innovation, removing the need for retro- if properly procured, can be The Kingdom Tower curtain spective structural coordination brought in during the design walling design is a high and other costly changes. strategy without impacting performance system similar competitive tendering. This in specification to the Burj Commissioning and Occupancy procurement process must be Khalifa. The complex system, The testing and commissioning clearly mapped out in advance which comprises of over 33,000 strategy must be considered with a specific emphasis on curtain wall panels, is being early so the opening and requirements for design input, manufactured and assembled operation strategy can be proprietary products, phased offsite to simplify and integrated into the schedule. procurement and site logistics. streamline onsite installation. The construction schedule must be driven by pre-commissioning Schedule and Trade Sequencing Material and Tradesmen and start early with progressive On tall buildings, there are a Availability sign offs. The coordination and number of trades that have to Early awareness of market integration of life safety and work sequentially and vertically. constraints and capacities shaft pressurization, flushing of The most efficient approach is means these restrictions can chilled water system and system to plan the critical trades from be accommodated by adapting integration testing, validation floor to floor, trailing trades design solutions. Designing to and handover can limit or at the same pace, creating promote competition is key and eliminate the cost of temporary optimum vertical sequencing. it is critical to secure commitments and/or retrofit work. The impact This coordinated approach from trade contractors and of this is heightened on tall allows results in improved material suppliers early. buildings due to the intricate production rates and better and innovative nature of the quality control. Tolerance and Movement design. Tall buildings are designed for Design aspects can often inhibit their completed configuration. Maximizing benefits through the optimal pace, identifying However, during construction Program Management this early means that adjustments a building may have higher Program Management provides can be made to improve degrees of loading that the substantial measures of constructability. For example, finished product. It is more cost stability, clarity and certainty. the core of the building is effective to design with the The application of sound the main pacesetting trade, construction sequencing known, Program Management principles simplifying the core will save rather than build in excess when building an iconic tall time and money by setting a capacity at additional expense building provides the discipline, faster leading pace. that may never be utilized. organization, structure and Coordinating cumulative trade processes to manage and Construction Quality Control tolerances and deflection mitigate risk whilst also and Assurance criteria, accommodating for creating the environment to Quality control and assurance lateral and thermal movement drive design and construction is key to setting expectations, and planning for differential innovation. The result is the working within tolerances and movement can help to identify creation of exceptional buildings creating repeatable sequences. the construction sequence and outcomes, the larger and Construction quality can be and allow the building to be more complex the challenges, assured by designing these into designed accordingly. the bigger the benefits. the details and building in regular schedule checks. It is critical to carry out performance testing as early as possible, ensure that shop drawings are coordinated and that the right mock-ups are being produced.
Tall buildings have challenged and allow staggered opening, Very small deviations from plan technology itself and allowed us including the possibility of can have a big bottom line to build towers more efficiently earlier income streams. impact. It is not enough to and sustainably; and to create Maximizing buildability requires manage to time, cost and scope internal environments that are the early, intensive interrogation, of work without understanding comfortable, productive, and planning and scheduling of the critical interdependencies energy-efficient. The prevalent the development, with detailed and risks unique to delivering green movement has propelled consideration of alternative vertical cities. Investing in the design of high performing methodologies. a Program Management tall buildings to employ approach from the beginning intelligent technologies and It is critically important to first will undeniably ensure that not smart materials. Optimizing a understand the business goals only are the outputs achieved, design for efficiencies can and objectives, rather than but benefits are realized and shorten the construction hastily launching the delivery outcomes achieved. schedule, easing the financing of technical services. Program costs and reducing the risk of Management can deliver these price rises during the construction iconic skyscraper and their phase. Greater savings can be surrounding cities safely, made through phasing of works efficiently and at speed by to allow works to be carried out providing a quality control concurrently and assurance framework. References 1. Bremner, B. (2007) The Race for the Tallest Skyscraper. May 01 2007. Bloomberg Business Week. 2. Risen, C. (2013) The Rise Of The Supertalls. March 2013. The New York Times. 3. Ijeh, I (2015) Can tall buildings ever be sustainable? 25 February 2015. Building Design Online. 4. Langton, J (2013) Kingdom Tower, Burj Khalifa and the era of the megatall buildings. March 18 2013. The National UAE. 5. Tilburn, J (2014) Supertall Buildings, 2014. Allianz Global Corporate and Specialty. 6. Ali, MM & Al-Kodmany, K (2012) Tall Buildings and Urban Habitat of the 21st Century: A Global Perspective. 28 September 2012. MDPI Buildings. Contact Julio Maggi Global Director of Program Management T +974 5039 2026 E julio.maggi@arcadis.com Derek Roy Commercial Director T +966 558 886 520 E derek.w.roy@arcadis.com Bryony Day Program Manager T +44 (0)7741 290 919 E bryony.day@arcadis.com 9507JAN16
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