Sustainable Construction
About us Cundall is a multi-disciplinary engineering consultancy operating from more than 20 offices across Australia, Asia, MENA, the UK, and Europe. With over 950 staff across the globe offering a full range of integrated engineering services, we are big enough to be able to provide a highly focused and dedicated team on our clients’ projects but still at a size where our core values can be effectively applied. Our mission is to play a key role in making buildings more energy-efficient, sustainable and cost-effective to operate. We develop solutions tailored to our clients’ requirements, by listening, collaborating and using our local and global expertise. Whether we are focused on cost, programme or reduction in environmental impact, we find options that will bring client benefit by encouraging innovation at every turn and understanding this shouldn’t come at the expense of functionality. To ensure we provide the best advice, we consider the implications of our design for every project, from routinely designing to and beyond sustainability standards and advising clients where they can achieve more by considering other services and save money with early involvement. Our offer in the field of sustainable construction includes the following elements: • • • • •
Use of CFD simulations Use of dynamic simulations Parametric modeling of buildings Building certification Using the above tools to optimise the design and operation of the building in terms of costs, energy, comfort, etc.
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Use of CFD tools Computational fluid dynamic (CFD) tools are specialized simulations used to solve complex design issues. This method is particularly applicable to predict and optimise the functioning of buildings or assess their impact on the neighbourhood. At the same time, CFD tools allow for a graphical representation of the results, which helps to visualise and understand the results. The characteristic of CFD tools makes them very useful in supporting the design process of buildings with particular focus on the following issues: • Thermal comfort of the interior • Impact of solar radiation on the interior and surroundings of buildings • Risk of draft caused by wind, temperature difference or mechanical ventilation • Ventilation system efficiency - air circulation (intensity and uniformity) across the spaces • Cooling and heating system efficiency – ability to maintain uniform temperature • Pedestrian wind comfort • Dispersion and propagation of pollutants, moisture, heat in the atmosphere • Analysis of smoke extraction systems or control of CO content in the air for underground car parks • Data centres- optimizing the efficiency of cooling and ventilation systems • Analysis of thermal bridges and condensation • Analysis of building façades – thermal performance optimisation • Analysis of flow and settling of solid particles, snow/ hail/ sand/ dust etc.
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Interior Comfort. Analysis of thermal comfort and related temperature distribution (air and radiation), air velocity, PMV, solar profiles etc. This allows visualization of the impact of design decisions on the actual interior quality. Risk of Draft As the result of external air inflow, infiltration or large glazed surfaces. CFD helps to estimate the scale of the problem and verify preventive actions in the form of, for example, air curtains, duct heating or screen applications. Natural Ventilation. Analysis of air flow caused by wind and temperature difference and evaluation of ventilation efficiency in terms of the amount and uniformity of air supplied and cooling potential. Pedestrian Comfort. Analysis of air flow in built-up areas and analysis of the impact of new buildings of the comfort of passersby, eg using the methodology according to Lawson’s criteria. Smoke Removal System/ Transport and Spread of Pollutants. Dynamic simulations showing the spread of smoke/pollution/ moisture and analysis of the efficiency of ventilation systems used for smoke removal or transport of pollutants from parking lots, railway stations etc. Thermal Bridges and Condensation Risk. 3D analysis of building elements that allows the calculation of energy/ moisture flow through building partitions and resulting temperature distribution and condensation risk. Data Processing Centres. Specialised analysis of cooling system efficiency, energy efficiency, uniformity of air distribution to individual servers, analysis of engine room operation with estimation of waste heat recirculation risk. Non-standard Analysis. A series of non-standard related to snow deposition on the building during a snowstorm, water flow in open water channels, penetration of open building structures by rain, etc. 3
Use of Dynamic Simulations Understanding how occupants interact with their environments is fundamental to good building design. Cundall’s in-house building physics experts have helped develop industry standards for a range of building types and sit on many of technical committees. They use advanced analytical tools, skills and techniques to optimise the performance of everything from individual rooms to entire masterplans. Cundall takes a low-energy first approach, striving to utilise passive design techniques to maximise occupancy comfort, improve natural day light and reduce their environmental impact before resorting to air conditioning. Cundall believes that a building is only truly sustainable if it provides an environment where its occupants can flourish. Analysis of Energy consumption. Retail Energy consumption allows for a comprehensive analysis of the functioning of the building and the impact of individual elements on the behaviour of the building, such as the facade, floor plan, selection of materials, types of ventilation, heating and air conditioning systems and control systems. The option analysis allows you to optimize the selection of concepts and properties of individual building elements.
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Energy analysis for LEED or BREEAM certification. The use of dynamic simulation tools allows you to conduct retail energy consumption analysis using the LEED or BREEAM methodology and to develop the documentation required in the certification process. Analysis of interior comfort. Analysis of the building‘s functioning for individual hours throughout the year allows for the analysis of the expected level of thermal comfort in sensitive rooms or building zones, which in turn allows optimization of the facade selection, interior functions, selection of HVAC systems etc. Analysis of interior lighting with daylight. Daylight lighting can be used to optimise the layout of the space inside the building, facade or sun protection systems. The analysis can also be used to optimise the effect of blind and artificial light control.
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Parametric Modelling Parametric modelling allows the conceptual analysis of the building in order to find the optimum in terms of achieving conflicting guidelines. Guidelines may refer to the maximisation of the building volume with simultaneous requirements related to, for example, appropriate interior lighting, minimising the negative impact on the surroundings, minimising the shadowing of the surroundings. Using parametric modelling, we are able to analyse hundreds or thousands of possible options in order to find a solution that meets the assumed criteria in an optimal way. Investment Planning – Masterplan. Cundall can perform rapid preliminary analysis at an early stage. This allows us to find the best way to meet the requirements of local development plans and good design practice, while maximising return on investment. This process carried out jointly with the investor and architect allows for an estimation of its investment potential alongside its environmental impact.
Views and daylighting productivity loss
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Optimisation of the shape of the building and selection of the faรงade. We perform rapid parametric simulations which allow you to choose the right orientation and shape for your building. The analysis supports the selection of the facade and its fabric performance. This allows us to optimise daylighting, solar gain, and minimising the risk of glare, at lowest cost. The impact of the building on the local microclimate. New buildings can affect the local microclimate by changing local wind conditions, solar exposure or daylight. Cundall use parametric analysis to maximise building massing whilst minimising impact on the surroundings, meeting local planning requirements in an optimal way. Simulations of illumination for WELL certification. With the use of parametric modelling tools, we are able to carry out specialised analyses of interior lighting or taking into account the viewing angle, the phenomenon of glare, etc.
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Sustainable Building Certificates Cundall gained extensive experience while working for many years with LEED and BREEAM certifications. Currently, we are also a leader in the field of introducing WELL certification.
BREEAM additional services A number of BREEAM credits require specialist input to demonstrate compliance. Cundall has a range of in-house specialists, who provide these services cost effectively. These studies should be undertaken at the earliest stage possible so that they actively inform the building design. Below is a list of the additional BREEAM services Cundall can offer: • • • • • • • • • • • • • • • • • • • • • • •
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Man01 - Sustainability champion Man02 - Life cycle cost analysis Man04 - Building user guide (BUG) Man04 - Thermographic studies Man05 - Post occupancy evaluation Hea01 - Daylight analysis Hea02 - Indoor air quality plan Hea02 - Indoor air quality testing Hea04 - Thermal comfort analysis Hea04 - Climate change adaptability Hea05 - Acoustic performance Ene01 - Reduction of energy use & carbon emissions Ene04 - Passive design analysis Ene04 - LZC technologies feasibility Ene06 - Lift energy analysis Tra05 - Travel plan Mat01 - Life cycle impacts Mat06 - Material efficiency Wst05 - Adaptation to climate change appraisal & strategy Wst06 - Functional adaptability strategy & measures LE02-05 - Ecologist report Pol03 - Flood risk report Pol05 - Noise attenuation
LEED additional services A number of LEED credits require specialist input to demonstrate compliance. Cundall has a range of in-house specialist, who provide these services cost effectively. These studies should be undertaken at the earliest stage possible so that they actively inform the building design. Below is a list of the additional LEED services Cundall can offer: • Preliminary energy analysis – as part of the integrative design credit • Preliminary water budget analysis – as part of the integrative design credit • ASHRAE whole building energy simulation • ASHRAE 90.1 and 62.1 consultancy • Renewable energy assessments • Measurement and verification plan development • Measurement and verification energy simulation-calibration • Light pollution reduction simulation • Thermal comfort simulation – ASHRAE 55 consultancy • Daylight simulation • Acoustic modelling to support the acoustic performance credit • Life Cycle Assessment
WELL Building Standard® services Cundall is the first consultancy in Europe to have delivered a project to the WELL Building Standard® and submitted for certification. We have applied this to a number of our own offices across the world and are now working on a range of projects, building on our experience across sectors and types of buildings.
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WELL Accredited Professionals™ (WELL AP™) Cundall’s WELL APs are able to offer advice and guidance based on our experience in delivering the WELL Standard, helping clients to achieve WELL certification. Healthy materials The choice of materials and finishes are fundamental to achieving a healthy building. Our knowledge of WELL and air quality regulations enables us to provide design teams with advice and guidance on palettes of materials. The choice of materials needs to be considered in conjunction with in use-activities such as the cleaning protocols to ensure that what starts off as a healthy material remains so. Air quality We help optimise and enhance indoor air quality, by producing bespoke indoor air quality plans. This would include air testing, monitoring as well as filter selection to enhance air quality. We could advise on the use of specific plants to actively clean the air, depending on the pollutant type. Water quality It is generally accepted that water from municipal supplies are of a high quality. However, for individual buildings and sites this may not be the case. In reality, if you don’t test, you don’t know what you have! We provide advice and guidance on water testing as well as remedial measures such as water filters, if required.
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Biophilic design Cundall has been carrying out research into the affinity of people to nature for a number of years. We can provide advice on a range of biophilic measures, such as: • Quality of daylight and melanopic lux • Plants for people and the impact on cognitive performance • Material texture and colour. Plants Cundall has undertaken pioneering research into green roofs and active green walls for purifying local air quality. We use this research to help inform plant selection for different uses and locations. Understanding the sensitivity of certain plants to light levels is important for their survival, as well as avoiding their respiring during daylight hours. Human comfort It is fundamental that the basic building blocks for comfort; temperature, noise, humidity and air movement are designed correctly. Cundall is an industry leader in setting and assessing design standards for human comfort. It is not enough to design to a standard. Monitoring comfort in use is the only way of ensuring that it is delivered. Acoustic soundscapes Acoustic design is not just an issue of privacy/sound levels, it is also about providing an acoustic landscape that enhances the occupants connection with nature. Cundall’s award winning acoustics team can help developed soundscapes that promote productivity and wellbeing.
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Contacts Wojtek Stec Director w.stec@cundall.com +4822 307 7401
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Climate Positive Action
Our Impacts Cundall is recognised as a leader in sustainability across the world, yet we have so much more we can and need to do. Business as usual is no longer enough.
Our Sustainability Roadmap identifies how we can have maximum impact using the One Planet Living Principles and the UN Sustainable Development Goal frameworks and sets out clear targets, action plans and indicators under six key impact areas which will guide our business into the future.
Materials and Supply Chain
Zero Carbon Energy
Climate Change Adaptation
Health and Wellbeing
Ethics and Equity
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