Stuart Kotchie from Harmsen Tilney Shane & David Matthews from Hoare Lea on Environment Agency design & sustainability

1. HORIZON HOUSE I GO GREEN TECHNICAL TOUR1© HARMSEN TILNEY SHANE 2016
HORIZON HOUSE TOUR
GO GREEN
STUART KOTCHIE
DIRECTOR
HARMSEN TILNEY SHANE
&
DAVID MATTHEWS
PARTNER
HOARE LEA

2. HORIZON HOUSE I GO GREEN TECHNICAL TOUR2
HORIZON HOUSE
BUSINESS GOALS & CONTEXT

3. HORIZON HOUSE I GO GREEN TECHNICAL TOUR3
Business efficiencies
• multiple sites into single site
• aggressive utilisation target
• operational improvements (shared space)
Commercially viable sustainable building, BREEAM
excellent, energy and water efficient building
Reduced environmental impact
Demonstrate that being green makes business sense
Improved culture, inspired staff, attract talent
Closer to a vibrant and diverse community
Visible champion for the environment
ENVIRONMENT AGENCY’S GOALS

4. HORIZON HOUSE I GO GREEN TECHNICAL TOUR4
9TH SEPTEMBER 2008
EA signs Agreement for Lease (102 week base build)
15TH SEPTEMBER 2008
Lehman Brothers collapses
23RD SEPTEMBER 2010
Completion of 102 week base build programme
17TH DECEMBER 2010
Completion of 12 week fit out programme
20TH DECEMBER 2010
first 350 staff relocated from Aztec West properties
25TH DECEMBER 2010
Christmas Day
31ST DECEMBER 2010
Lease Break on the 2 Aztec West properties
CONTEXT AND TIMELINES

5. HORIZON HOUSE I GO GREEN TECHNICAL TOUR5
HORIZON HOUSE
SERVICES DESIGN

6. HORIZON HOUSE I GO GREEN TECHNICAL TOUR6
Achieved BREEAM Excellent with a score of 85%
The highest BREEAM score under the 2006 version
80
70
66.67
100
100
72.22
92.31
100
0 10 20 30 40 50 60 70 80 90 100
Pollution
Land Use & Ecology
Materials
Water
Transport
Energy
Health & Wellbeing
Management
PERCENTAGE
BREEAM ACHIEVING EXCELLENT

7. HORIZON HOUSE I GO GREEN TECHNICAL TOUR7
Internal space planning and fit out principals were
established with zoning diagrams.
7m maximum distance for workstation to outside wall
Draft furniture layouts included to demonstrate
occupants have a view out from all workstations.
Maximise Daylight to desk positions
© Environment Agency
BREEAM HEALTH & WELLBEING

8. HORIZON HOUSE I GO GREEN TECHNICAL TOUR8
High efficiency luminaire rafts (9W/m2 to achieve 350
lux)
Daylight linked lighting controls
Presence detection with manual override
BREEAM LIGHTING

9. HORIZON HOUSE I GO GREEN TECHNICAL TOUR9
Low and Zero Carbon Technologies
30% improvement on Part L U-Values
The Ground Source Heat Pump (GSHP) stores heat in the
ground through out the summer. This heat is then used
to preheat hot water all year round and also to heat the
building during winter
The GSHP is a Low Carbon technology that contributes
17.5% of the building’s annual energy requirements.
Renewable Technologies
100m2 of Photovoltaic (PV) cells produce electricity for
the building
45m2 of Solar Hot Water (SHW) collectors produce of hot
water backed up by the GSHP and gas fired boilers.
BREEAM ZERO CARBON TECHNOLOGIES

10. HORIZON HOUSE I GO GREEN TECHNICAL TOUR10
Mains water consumption reduced by 70% by using:
• Rainwater harvesting
• waterless urinals
• low flush toilets
• low flow shower heads
• aerated taps
Rainwater and mains cold water use metered at each
floor.
Water supply automatically shut off when not in use to
minimise any potential wastage.
Rainwater harvested from all of Cabot house for use in
Horizon House
BREEAM WATER CONSUMPTION

11. HORIZON HOUSE I GO GREEN TECHNICAL TOUR11
Mixed mode ventilation
Automatic opening windows respond to maximise
periods of natural ventilation
User control + BMS feedback
High thermal mass
Free night cooling
Natural and mechanical ventilation combined to assure
the good working conditions whatever the weather
Design was developed to ensure that glare control
measures are incorporated. These measures included
external brise soleil and provision for internal blinds.
Lighting systems designed with intelligent controls to
reduce use.
Winter temperature set-points adjusted post occupancy.
Soffit insulation liner
panel
Bronze anodised handrail
to safety glass balustrade
Uninsulated
Single layer roof system
Timber windows
MIXED MODE VENTILATION

12. HORIZON HOUSE I GO GREEN TECHNICAL TOUR12
Measured energy consumption has been recorded since
occupation by the FM team and is shown here, over a
four year period.
Data is key to driving analytics and efficiencies.
The measured energy consumption includes unregulated
energy use, e.g. small power appliances and IT
equipment.
The measured energy consumption is compared with the
2006 Part L building regulation compliance assessment,
which excludes unregulated loads and does not consider
the actual occupation profiles.
Unregulated
electricity
use not
assessed by
Part L
POST OCCUPANCY ENERGY CONSUMPTION

13. HORIZON HOUSE I GO GREEN TECHNICAL TOUR13
Energy consumption of Horizon House is compared with
industry benchmarks for open plan naturally ventilated
offices and air conditioned offices, both typical and good
practice, from Energy Consumption Guide 19.
It is recognised that these benchmarks are over 10 years
old but in the absence of more recent data on
benchmarks from either CIBSE or the government it is
considered that these benchmarks are probably the most
recognised in industry
The total energy consumption for Horizon House is
similar to the performance of a ‘good practice’ naturally
ventilated office.
and a 45% improvement on a ‘Good Practice’ Air-
conditioned office!!
POST OCCUPANCY COMPARISON

14. HORIZON HOUSE I GO GREEN TECHNICAL TOUR14
HORIZON HOUSE
BUSINESS CHANGE
EFFECTIVE, SUPPORTIVE &
EFFICIENT WORK
ENVIRONMENT

15. HORIZON HOUSE I GO GREEN TECHNICAL TOUR15
Much better use of space
A work environment to support all activities
Unified culture
A “good news” place to work
WORKPLACE OBJECTIVES

16. HORIZON HOUSE I GO GREEN TECHNICAL TOUR16
Fragmented
Wasteful
Mismatch
HOW WAS IT BEFORE?
ACTIVITY RATING 2009
Confidential phone calls
Conference calls
Confidential meetings
Quiet working
Formal Meetings
Daily interaction with team members
Interaction with staff outside your team
Customer meetings and hospitality
Informal unplanned meetings
Breakout Space
Team meetings
Working in transitory locations
Working from home / away from the office
Accessing paper documentation

17. HORIZON HOUSE I GO GREEN TECHNICAL TOUR17
Territorial behaviours and the notice board culture
Disenfranchised facilities management team
Defensive booking strategies – just in case
“Change is good – for others”
Food and drink integral to interaction
WORKSHOPS

18. HORIZON HOUSE I GO GREEN TECHNICAL TOUR18
“We own” becomes “we use”
Non-territorial working for many
Move towards un-bookable meeting spaces
“Change is good – for all of us”
Excellent break-out and informal spaces throughout
WAY FORWARD

19. HORIZON HOUSE I GO GREEN TECHNICAL TOUR19
USING THE WORKSPACE PROPERLY
HUB
FLEXIBLETEAM SPACE
FLEXIBLE
PEAK
CONTINGENCY
EXTRA
CONTINGENCY
TEAM SPACE
FLEXIBLE
ANCHOR POINT WORK SETTINGS

20. HORIZON HOUSE I GO GREEN TECHNICAL TOUR20
USING THE WORKSPACE PROPERLY TYPICAL FLOOR
Lockers
Storage – 3 levels high
Storage – 5 levels high
Coat storage
Touchdown
Quiet carriages
Breakout
Meeting - formal
Meeting - informal
Facility point
Teapoint

21. HORIZON HOUSE I GO GREEN TECHNICAL TOUR21
USING THE WORKSPACE PROPERLY GROUND FLOOR
Lockers
Storage – 3 levels high
Storage – 5 levels high
Coat storage
Touchdown
Quiet carriages
Breakout
Meeting - formal
Meeting - informal
Facility point
Teapoint

22. HORIZON HOUSE I GO GREEN TECHNICAL TOUR22
£4.37m excluding energy savings
74% of staff used to commute by car, staff travel plans
show only 14% continue to use car. 2500 commuter
miles saved per day
Best BREEAM Office for 2010, 72% reduction in water
consumption
Demonstrate that being green makes business sense
Improved culture, inspired staff, attract talent
Closer to a vibrant and diverse community
Visible champion for the environment
HAS PROPERTY CHANGED THE BUSINESS?

23. HORIZON HOUSE I GO GREEN TECHNICAL TOUR23
HAS PROPERTY CHANGED THE BUSINESS?
-
50,000
100,000
150,000
200,000
250,000
300,000
350,000
Jan-10 Feb-10 Mar-10 Jan-11 Feb-11 Mar-11 Jan-12 Feb-12 Mar-12
kWh
Energy comparison:
Rio/WoT 2010, Horizon 2011, and Horizon 2012
Gas
Electricity

24. HORIZON HOUSE I GO GREEN TECHNICAL TOUR24
Horizon House significantly
improved the working
environment for staff and better
supported their workplace
activities
OUTPUT PERFORMANCE RATINGS
ACTIVITY RATING 2011
Confidential phone calls
Conference calls
Confidential meetings
Quiet working
Formal meetings
Team meetings
Interaction with staff outside your team
Breakout space
Informal unplanned meetings
Working in transitory locations
Daily interaction with team members
Customer meetings and hospitality
Working from home / away from the office
Accessing paper documentation
ACTIVITY RATING 2009
Confidential phone calls
Conference calls
Confidential meetings
Quiet working
Formal Meetings
Daily interaction with team members
Interaction with staff outside your team
Customer meetings and hospitality
Informal unplanned meetings
Breakout Space
Team meetings
Working in transitory locations
Working from home / away from the office
Accessing paper documentation

25. HORIZON HOUSE I GO GREEN TECHNICAL TOUR25
It is much easier in the new office to find the right
people to talk to in other teams.
Love Horizon House
A Great Place to Work
This feels like a building that really works
The non-bookable and breakout areas are great
Open plan opens up opportunities
We can learn from Head Office
Fulfilled the brief and more
STAFF FEEDBACK

26. HORIZON HOUSE I GO GREEN TECHNICAL TOUR26
Farleigh Court I Flax Bourton I BS48 1UR T 01275 465 200
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