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LEAN GREEN BIM
Transcript of LEAN GREEN BIM
The UPC is recognized internationally for large-scale sustainable urban planning and for rapid growth. Plan Abu Dhabi 2030 urban master plan adressess sustainability as a core principle. Estidama, which is an Arabic word for sustainability, is an initiative developed and promoted by the Abu Dhabi Urban Planning Council (UPC). Estidama is the intellectual legacy of the late Sheikh Zayed bin Sultan Al Nahyan and a manifestation of visionary governance promoting thoughtful and responsible development while creating a balanced society on four equal pillars of sustainability: environmental, economic, social, and cultural The goal of Estidama is to preserve and enrich Abu Dhabi's physical and cultural identity, while creating an always improving quality of life for its residents. An essential tool to advance Estidama is the Pearl Rating System.
The Pearl Rating System is a framework for sustainable design, construction and operation of communities, buildings and villas. The Pearl Rating System is unique in the world and is specifically tailored to the hot climate and arid environment of Abu Dhabi. The extreme summer temperatures of Abu Dhabi reach 48°C and humidity levels can be near 100%. Air conditioning consumes large amounts of electrical energy. Water is a precious resource due to high evaporation rates, infrequent rainfall averaging less than 100mm/year and the environmental impacts of the desalination production technique.
The Pearl Rating System supports the social and cultural traditions and values of Abu Dhabi. This system reinforces what this unique place has been in the past and hopes to be long into the future. The Pearl Rating System is part of the government and a government wide collaborative initiative to improve the lives of all citizens living in Abu Dhabi Emirate. It requires accountability of the operational phase of a development to verify performance.
The main tools of Estidama are the individual Pearl Rating Systems. Each system begins with an integrated development process to encourage cross-disciplinary teamwork in the design, construction and operation of the development. Currently, the Pearl Rating System comprises the following components which address the design and construction aspects of all developments: Millenarianism (also millenarism) is the belief by a religious, social, or political group or movement in a coming major transformation of society, after which all things will be changed. Millennialism is a specific form of millenarianism based on a one-thousand-year cycle, which many sects of different religions believe Millenarianism Chinese Buddhist millenarian movement that was often persecuted because of its association with rebellion. The movement had roots in 4th-century worship of the Buddha Amitabha, whose devotional cult inspired Mao Ziyuan to form the White Lotus Society, a pious vegetarian group of monks and laity. By the 14th century it had developed into a millenarian sect that combined Maitreyan and Manichaean beliefs and was active in rebellions at the end of the Yuan dynasty. The society became most prominent through its role in the White Lotus Rebellion (1786 – 1804), a large-scale uprising in central China that contributed to the fall of the Qing dynasty. It was eventually put down by peasants organized into local militia defense corps. Later Chinese governments came to use the term White Lotus for all illegal millenarian groups. Some observers saw the Nian Rebellion of 1852 as well as the secret society behind the Boxer Rebellion as new manifestations of the White Lotus Society. White Lotus Society The process requires more planning, more responsibility from all parties, and a strict adherence to intermediate schedule milestones. As a result of this discipline, abortive work is significantly reduced, coordination issues are minimized and the product serves the client, community, and environment far better than most buildings designed using the traditional approach. The main purpose of the integrated design process (IDP) is the optimization of multiple project factors. The factors to be optimized typically include items such as capital expense, operating expense, energy use, water use, functionality, public realm, aesthetics, and social impact. The weighting of criteria to be optimized varies from project to project depending on stakeholder requirements. The process consists of recurring workshops wherein all stakeholders and design disciplines share their knowledge in real time to provide solutions wherein their separate realms of knowledge reinforce one another. This is quite different from the traditional approach where groups work in isolation, make incompatible assumptions and attempt to resolve clashes in after-the-fact coordination meetings. The first workshop is most critical to the process, because the inception period is the time when the most positive impacts can be made with least difficulty. 1 identify constraints
2 agree on criteria and their relative weight.
3 identify a base case
4 identify base case problems
5 identify ways in which a different design approach can improve on the issues with the base case
6 split into sub-workshops to work on particular strategies which can be used to achieve goals stated in 5
7 reconvene to discuss scenarios proposed in workshops
8 score proposed scenarios with respect to agreed criteria
9 identify main paths to be pursued based on the scoring. The first workshop proceeds according to the following outline: Subsequent workshops, to be held at least at the start of and 50% point of each phase build on the progress of previous sessions, further narrowing the range of possibility, ultimately arriving at a solution which optimizes the design according to criteria identified at the project inception. Integrated Design Allows optimisation of decisions related to energy-use,
starting with the pre-concept master planning phase and ending with materials and specifications.
greater impact of savings can be realised during early design phase. WLS Using animation tools, WLS designers can carry out tests to check which building concepts will save the most energy. We can come up with about 40 options and test them in the same amount of time, which earlier was spent on two or three alternatives. This optimized workflow allows Burt Hill to give clients a much better quality product, by being able to choose the optimum solution from a broad range, in early design. By changing the orientation of the building we are actually saving the client a lot of money, without changing the project cost. Common Conceptual Framework Helps achieve shared understand
Helps establish facilitate discussion & dialog
Helps establish clarity & consensus on what successful output is Daylighting / Early Design Development
Logarithmic scale luminance (with reflected light)
Color Values Vary... because they're adjusted btw interior & exterior
Measured in lux.
- GREEN Sweet Spot (btw 200 & 300 lux)
- RED (at 3,000)
- RED (20,000 +\-)
- BLUE (1,000 +\-)
- Local Conditions
- Target Values Luminance is a photometric measure of the luminous intensity per unit area of light travelling in a given direction. The lux (symbol: lx) is the SI unit of illuminance and luminous emittance. Whole System Optimisation through Collaboration and systematic learning
Continual improvement/pursuit of perfection involving everyone in the system
Focus on delivering the value desired by the owner/client/end-user
Allowing value to flow... by systematically eliminating:
- Obstacles to value creation
- Parts of the process that create no value
Pull production kaizen Purpose: Objectives: Context
Burt Hill's 'Performance Based Design Metric'
Show how one of our most "energy challenged" designers successfully blends sustainable design, lean philosophy, and BIM technologies Setting the Stage... 'Performance Based Design'... Defined Arabic word for sustainability Pearl Rating System Abu Dhabi is working very well with integrated building design with its Estidama system Technology is helping us to improved our analysis, design, visualization, and documentation... Lazy... or Lean? ... Appreciation for a system. A leader must understand the system he or she is attempting to manage. Without this understanding the system can not be managed or improved. A system cannot understand itself or manage itself. Optimization of the parts does not optimize the whole. System optimization requires coordination and cooperation of the parts which requires leadership. Performance Based Design Jim Summers; Senior Business Analyst with Burt Hill's IT Group Provide you with a snapshot of Burt Hill's 'Design System' innovations that successfully integrate, or blend sustainable design with lean design, integrated design, and BIM technologies Business Process Management Lean Design & Construction "Three Opportunities Created by Lean Construction" September 5, 2006
Copyright 2008 Gregory Howell & William Lichtig, Lean Construction Institute. "Impeccable coordination" creates predictable workflow within and across
trades and disciplines. Currently, projects are nearly chaotic, with an
average of 55%of work promised in a week actually being completed as
promised. This is like driving at rush hour behind a car that keeps jamming
on the gas and slamming on the brakes. Taking action to create predictable
workflow stabilizes the project environment and reduces both time and cost
without sacrificing quality. It also frees up human capacity to focus on
innovation and continuous improvement. Approaching “Projects as Production Systems” opens the possibility of
changing the structure of work in both design and construction – who does
what, when, where and how. Changing the structure to maximize project
performance includes elevating cost and other owner values to explicitly
drive design. It also recasts the role of specialty contractors in that effort.
During construction, production system design coupled with impeccable
coordination makes possible modularization, off-site fabrication, and multitrade
composition of work, with the goal of improving system-wide
performance. “Projects as Collective Enterprise” aligns financial incentives and gives the
team the ability to move money across commercial boundaries, with the goal
of project-wide optimization, rather than a trade-level or silo focus. Rearview
control is replaced by the ability and willingness to invest here and now for
returns there and then. The goal is to create an "all for one, one for all"
mentality. Integration Systems Management 'Design' is a complex process Managing the design process is a challenge design (planning & strategies),
modeling (Backwards Pass, WBS or Work Breakdown Structure)
monitoring & controlling, and
optimization Quality Scope Cost Time Project
Management Triangle Like any human undertaking, projects need to be performed and delivered under certain constraints. Traditionally, these constraints have been listed as "scope," "time," and "cost". These are also referred to as the "Project Management Triangle," where each side represents a constraint. One side of the triangle cannot be changed without affecting the others. A further refinement of the constraints separates product "quality" or "performance" from scope, and turns quality into a fourth constraint.
The time constraint refers to the amount of time available to complete a project. The cost constraint refers to the budgeted amount available for the project. The scope constraint refers to what must be done to produce the project's end result. These three constraints are often competing constraints: increased scope typically means increased time and increased cost, a tight time constraint could mean increased costs and reduced scope, and a tight budget could mean increased time and reduced scope.
The discipline of Project Management is about providing the tools and techniques that enable the project team (not just the project manager) to organize their work to meet these constraints. People Process Information Tools & Technology Design System
Management Triangle Optimization Workflows simple system INPUT How do you cope with complexity? break it down... don't reinvent... prioritize... "bang for the buck" focus on early phase,
The supporting workflows & processes
and the enabling tools Well planned design system helps insure integrated project team understands their role/responsibilites throughout
Integrated optimized technologies; e.g. to calculate the potential energy consumption of a building. One step at-a-time! Video Ivar Krasinski, Burt Hill, Dubai Pre-Optimization Post-Optimization Optimizing Process baby steps... TOOLS Design Metrics Deming's Theory of
Profound Knowledge Deming on 'Process" Workflow Planning W. Edwards Deming Three success factors:
Early Sustainable Design
Integrated Design Process
Workflow Optimization Urban Planning , I Optimizing Technology Buidling Design Urban Planning , II Conceptual Design Morphing Visualizing Luminocity Sustainability Estidama PROCESS OUTPUT Design System Energy Challenged... Design System 5 Components / Design System Lean BIM Time