tall buildings sustainable & practical design approach case study: 20 fenchurch street presented by vince ugarów group director hilson moran cibse regional seminar birmingham 8 february 2012
building performance and efficiency equally important as aesthetics, quality & iconic status why? it has a direct impact on our environment
environment landscape ecology public realm energy water air quality cost economic investment finance infrastructure funding politics culture liberty religion media social community
why is it important? uncontrolled development infrastructure pressures
for a developer optimal building height when cost meets income net to gross floor area efficiency becomes even more critical key drivers plant zones & cores
plant strategy cores & risers system hydraulics tenant requirements sustainability 20 Fenchurch Street a case study
R plant locations efficient riser distribution R 75 hydraulic efficiency simple ventilation strategy R 55 55 co-ordinate with lift strategy R R 40 40 R R 35 35 35 25 20 20 20 20 20 20 2 B 2 B 2 B 2 B 2 B 2 B 2 B 35 Storey 50 Storey 65 Storey 80 Storey 100 Storey
lift strategy Plant Floor drives the plant locations identify transfer levels create double height sky lobbies Plant Floor Sky Lobby position plant above the sky lobbies Plant Floor Sky Lobby
benefits machine room remains within plant floor wc block office floor maintains standardised layout above & below provides an acoustic/anti vibration buffer zone avoids landlord drainage routes in occupied floors services zone to drain lift motor room plant floor lift sky lobby
replacement consider early in the process replacement of major plant 20+ years engage specialist advice identify weights of all major plant items consider routes through the building document the strategy and follow it through
use of goods lifts a 3000kg goods lift handles sheet materials partitioning systems furniture in safe lift mode handles transformers other heavy plant consider sectionalised plant modular air handling units sectional cooling towers
risers air distribution 15% to 25% varies with system selection tenant firefighting pipework electrical comms air distribution pipework 15% to 20% electrical 25% to 30% diverse routing good access onto floor firefighting 12% to 17% sprinkler and wet risers staircase and lobby pressurisation tenant risers 8% to 10% kitchen extracts routing to plant zones communications 8% to 10% diverse and secure routing good access onto floor
core minimising riser requirements optimise shape & size pre-fabrication pre-insulated ductwork jointing techniques concrete risers
core consider pre-fabricated toilet pod units reduces site manpower health & safety benefits removes activity from critical path ensures quality construction cost benefits
hydraulics limit working pressures selections fall within equipment capability reduces risk of failure provides economic component selection reduces weight & imposed forces consider high pressure circuits limits temperature drop through circuits saves plant space reduces additional pumping & associated equipment reduces operating costs
costs butterfly valves PN16 PN25 PN40 weight cost weight cost weight cost 300mm Ø 47kg 660 167kg 4,200 203kg 4,200 400mm Ø 93kg 1,800 340kg 9,100 415kg 9,100 600mm Ø 225kg 4,800 777kg 24,100 967kg 24,100
tenant requirements anticipate ventilation ability to increase outside air redistribution between adjacent floors ability to cope with kitchens and restaurants cooling 24 hour operation resilient installations for business critical loads space for independent systems gas spare capacity space for risers or connections washrooms ability to extend for increased occupancy
tenant requirements anticipate electrical diverse routing resilient supplies and infrastructure standby generation space for UPS communications diverse & secure routing space for satellite dishes structural soft spots for comms rooms bms ability to monitor base build plant network node controllers on floors
on-site renewables photo voltaics, solar, wind, fuel cells energy hierarchy infrastructure district energy centres, off site renewables energy efficient systems lighting, air con, mixed mode, controls facade design thermal, light transmission, shading mass & built form orientation, shape & fabric return on investment
20 Fenchurch Street 38 storey tower currently under construction 63,800m 2 of Grade A commercial office space, retail units and a public space, at the top of the building, featuring botanical gardens, restaurant and roof terrace CLIENT: Land Securities & Canary Wharf ARCHITECT: Rafael Vinoly Architects
Plant Locations: Tower Roof plant Basement plant Level 2 plant
core 2 sided concrete supply air risers Pre-fabricated on-floor heat exchangers lift shafts for double deck lifts
Power Standby Generators UPS HV supplies
Cooling air cooled chillers water cooled chillers absorption chiller
Sustainability Targets Building Regulations: Approved document Part L2A:2010 Compliance margin over 2010 Part L regulations +24% BREEAM: Excellent EPC rating 40
Tenant BREEAM obligations to achieve Excellent Commissioning CIBSE & BSRIA Commissioning Codes Lighting levels LG7 & Code for Lighting lux levels Luminaires to be fitted with high frequency control gear Thermal zones air conditioning perimeter and internal zone control Microbial contamination TM13 & ACoP L8 requirements Energy metering TM39 Volatile Organic Compounds low VOC paints, carpet tiles, etc EPC capped values for lighting and air conditioning equipment
an interesting trend 1930 empire state & chrysler buildings the great depression 1972 to 1974 world trade center towers & willis tower american economic stagflation 1998 petronas towers asian financial crisis 1989 canary wharf 90 s recession
an interesting trend 2009 Burj Khalifa 2014 20 Fenchurch Street
e n v i r o n m e n t s f o r l i f e www.hilsonmoran.com