It’s viewing things at an ecosystem level and bringing them all together with elements like the Value Toolkit, which is there to help everyone, but will specifically help clients make better, value based decisions using consistent processes and approaches..
Be Lean (passive): minimise the use of energy via passive design measures such as optimised form, orientation and window-to-wall ratio (WWR); design energy efficient facades that incorporate thermal insulation, high airtightness, external shading and solar control glazing; use of natural ventilation and thermal mass and design transitional spaces and low thermal expectation spaces.. Be Lean (active): minimise the use of energy via energy efficient lighting (LED, daylight and presence control sensors) and ventilation systems (demand control ventilation, low SFPs, heat recovery); use technologies such as waste-water heat recovery and specify energy efficient lifts and appliances/equipment.. Be Clean: connect to district heating networks that have plans for decarbonisation; explore plans and feasibility of local hydrogen district networks.. Be Green: use onsite low and zero carbon technologies such as air source heat pumps (ASHP), ground source heat pumps (GSHP), photovoltaic panels, solar collectors for domestic hot water and wind generation among others.. Be Smart: implement innovative technologies such as electric batteries, heat storage, post-occupancy evaluation and develop smart-metering systems..Offset: any remaining carbon should be offset via Power Purchase Agreements (PPA) or recognised carbon offset schemes.
Offsets used should be publicly disclosed.. An example of specific design strategies that Bryden Wood have adopted follow the proposed operational carbon hierarchy is shown in Figure 5 and is demonstrated with examples below..Step-by-step hierarchy for net zero operational carbon.In order to substantially reduce embodied carbon, our designs will adopt the following hierarchy:.
Build Nothing: identify opportunities to reuse existing structures, refurbish and reuse demolition materials onsite.Build Less: optimise the building’s form, structure, structural grid, WWR and DfMA components; recommend the use of durable materials, design-out basements and false ceilings (exposed soffit); design spaces which are adaptable and can be easily deconstructed..
Build Clever: specify low carbon materials with a focus on the recycled content of steel and concrete and the use of timber; maximise the recycled content of finishes, use reclaimed floors and explore system’s rental; where possible use low GWP refrigerants and avoid VRF systems..
Build Efficiently: implement innovative construction strategies such as Modern methods of Construction (MMC) and use a DfMA approach to reduce waste onsite..Built Environment Matters podcast.
episode featuring., Vice President of Enterprise Transformation at Autodesk, in conversation with.
Jaimie Johnston MBE.- Head of Global Systems at Bryden Wood.. Over twenty years ago, the Queen of Prefab, Amy Marks found herself talking to the C-Suite of one of the biggest contractors in the world.. She said, “I can show you a way that you can do more, with less people on the job site, and make these jobs shorter.”.