CASE STUDY: 11-21 Canal Reach
11-21 Canal Reach comprises two Grade A office buildings – 11 Canal Reach (235,000 sq ft) and 21 Canal Reach (170,000 sq ft). Design started in 2015-2016 and construction has been ongoing since 2018.
The buildings are focused around two central atria in each, and are capable of being of single or multiple occupation in a range of configurations. The buildings offer uninterrupted floorplates, with full height glazing and floor-to-ceiling heights maximising daylight penetration. Extensive communal roof gardens offer an amenity for staff with views over Central London.
- Achieved a design stage certification of BREEAM Outstanding, and is on track to achieve BREEAM Outstanding at construction stage.
- The project is currently achieving an embodied carbon target of below 800kgCO2e/m2 with continued ambitions to improve on this figure during construction.
- Operational energy has been modelled using the TM54 methodology, as a pre-cursor to using the Design for Performance approach.
- Assessment of whole life carbon has been on-going since Stage 2 with a consultant and is currently being undertaken during the construction stage to allow the team to measure and reduce the embodied carbon. This is being undertaken in compliance with BSEN 15978.
- A large amount of the buildings’ structure is exposed, reducing the need for any short-life finishes, and no finishes have been installed within tenanted areas to reduce the risk of any materials being wasted.
- During construction, key quantities and as-built carbon intensities are being collected, to allow a final embodied carbon calculation to be completed at practical completion. Recommendations for end-of-life scenarios will be considered within the building user guide (for example to identify take-back schemes).
- The glazing ratios are designed to optimise cooling and daylight, and where increased glazing ratios are used on the façade that faces the public street, large louvres cut out the majority of solar gains whilst protecting views.
- Atria are provided in the centre of the plan to increase daylight and to assist with passive heat rejection.
- The building links to a centralised heating/cooling network which provides higher efficiencies than typical alternatives.
- Energy meters are provided across the building to the client’s metering requirements which allow the possibility of each tenancy to be tracked on a central portal. Tenants can then be provided with information and support to reduce emissions as currently happens on other projects on the development.
- The project is connected to the Kings Cross site-wide energy network, which includes centralised heating and cooling networks.
- A high GGBS content, post-tensioning, and reusable formwork was used to reduce the emissions for the concrete frame.
- A highly efficient floorplate provides more floor space for the amount of building required.
- High percentages of recycled content were used throughout the aluminium cladding, and materials were considered in terms of embodied carbon content.
For further information:
Please contact: firstname.lastname@example.org