Godmanchester Chinese Bridge is an amazing grade two listed work of art but was neglected with broken DIY halogen floodlights, and a host of practical difficulties facing the new lighting team. Discover how this stunning footbridge has been transformed into a well-lit, warm, inviting area that balances the use of LED and SON lighting. Talk by Pete Lummis IEng MILP, Project Engineer, Huntingdonshire District Council

1. Son and LED working together – a case study. Pete Lummis I.Eng, M.I.L.P

2. © Crown copyright and database rights 2013 Ordnance Survey HDC 100022322

3. © Crown copyright and database rights 2013 Ordnance Survey HDC 100022322

4. © Crown copyright and database rights 2013 Ordnance Survey HDC 100022322

5. © Crown copyright and database rights 2013 Ordnance Survey HDC 100022322

6. © Crown copyright and database rights 2013 Ordnance Survey HDC 100022322

7. Existing Lighting © Crown copyright and database rights 2013 Ordnance Survey HDC 100022322

9. Proposed Lighting © Crown copyright and database rights 2013 Ordnance Survey HDC 100022322

11. Other LED
floodlights
did not
deliver the
solution I
wanted to
achieve in
relation to
the
footbridge
lighting.

13. The area where people sat and
mingled was well lit at 28 lux and an
excellent uniformity ratio of 0.4.
The area leading to the road was
backlit by the 10m streetlights (CCC
SON lighting.)
The proposed lighting was
replacement for existing lighting
and was approved by the
conservation officer. The only
additional light was mounted on
the end of a building owned by the
District Council, leased to the
Parish Council and not Grade
listed, so was done under
permitted development.

14. CHALLENGE NUMBER 1.
Grade 2 listed building
“keep the bracket”
Thus saith the
Conservation Officer

18. CHALLENGE NUMBER 2
Design a bracket for
aiming the floodlight!

21. CHALLENGE NUMBER 3
Mounting the floodlight
Final solution- a cantilevered scaffold

30. From: Madelaine Liddiard [mailto:TownClerk@GMCCouncil.com]
Sent: 22 April 2016 09:00
To: Lummis, Pete (Projects)
Subject: FW: Lighting of Godmanchester TC Offices/Elizabeth school area and Chinese Bridge
Pete
Quote from the Mayor of Godmanchester : Cllr David Underwood
“Godmanchester people are delighted with the new lighting scheme designed by Pete Lummis.
It is subtle and sensitive, highlighting the beauty of our iconic Chinese bridge at night.”
Madelaine
Self critique.
“I wish I could have mounted the floodlights 2m higher, so giving an inclination angle of 0⁰.”
Pete