Where do I start

This is above the form and the thank you message.

Should you require a lighting design for a road tunnel scheme, simply fill in the table below with all the project details and we shall deal with your request at our earliest convenience. (Please complete as much of this document as possible - this will help our designers to provide a more accurate design first time, and will help speed the process).

Your details

First name *
Surname *
Company *
Address 1 *
Address 2 *
Postcode *
Project discipline
(e.g. Contractor, M&E, Consultant to … etc) *
Telephone *
Facsimile *
Email address *

* = Mandatory field

General tunnel details

Project title		Tube 1 traffic direction (e.g. Nth/bound)
Tunnel name		Tube 2 traffic direction (e.g. Sth/bound)
Location		Type (e.g. cut&cover, immersed etc.)
Road & junction number		Status (e.g. new build, refurbishment etc.)
Tunnel orientation (e.g. Nth/Sth)		Construction (e.g. square section)

Tunnel design criteria

Dimensions	Unit		Unit
Length	m	Number of lanes (including emergency lane)
Width (wall to wall)	m	Emergency lane width	m
Height (to soffit or crown)	m	Distance from left wall to kerb	m
Traffic envelope/clearance (minimum height to underside of luminaires)	m	Height to underside of existing support structure (if applicable)	m
Class
Traffic volume	VpHpL	Traffic type (e.g. motorised only, mixed)	-
Traffic volume	ADT	Tunnel class (e.g. motorised only, mixed)	-
Surfaces
Road surface type (e.g. R1, C2 etc.)	m	Reflectance - ceiling	%
Road surface Qo (e.g. R1, C2 etc.)	m	Reflectance - walls	%
		Reflectance - road	%
Preferences
Design to which standard (e.g. BS5489-2:3003)		Preferred lamp type Interior lighting
Other standards for consideration (e.g. BD78/99)		Preferred lamp type Boost lighting
Preferred luminaire positions (e.g. comice, centre, etc …)		Preferred luminaire series
Preferred boost lighting distribution (e.g. symetrical, counterbeam, etc …)		Exit lighting required? (yes/no)

Lighting design data

General	Unit		Unit
Basic daytime interior luminance level	cd/m²	Maximum threshold increment required	TI %
Night-time interior luminance level	cd/m²	Approach road lighting level or class	-
Maintenance factor	-	Height of wall luminance to be considered	m
Normal traffic flow
Design speed	kph	Wall luminance	cd/m²
Speed limit	mph	Exit lighting luminance	cd/m²
Portal luminance (L₂₀)	cd/m²	Exit zone length	m
K factor	-	Longitudinal uniformity	UI
Threshold luminance (highest stage)	cd/m²	Overall uniformity	Uo
Threshold length requirement	m
Contra-flow/Tidal-flow Traffic (leave blank if not required)
Design speed	kph	Threshold length requirement	m
Speed limit	mph	Wall luminance	cd/m²
Portal luminance (L₂₀)	cd/m²	Longitudinal uniformity	UI
K factor	-	Overall uniformity	Uo
Threshold luminance (highest stage)	cd/m²
Power-fail lighting
Average illuminance level requirement	cd/m²	Overall uniformity requirement	Uo %
Minimum illuminance level requirement	cd/m²	or … % basic daytime lighting level	%

Where do I start

Your details

General tunnel details

Tunnel design criteria

Lighting design data

Notes