Costed: Lighting

Words:
Ruby Galloway

Ruby Galloway, of Gleeds Research & Development, considers lighting costs

Lighting is one of the most important elements of a building, whether natural or artificial, and can enhance the performance of both a space and its users.  Its purpose has gone beyond simply improving visibility: mood lighting is used to enhance the atmosphere in living rooms, restaurants and even aeroplane cabins, while intelligent systems can detect when lighting is required to reduce energy consumption and provide safer, more secure access.

Different clients have different ob­jectives and requirements.  The most common is to enable a user to perform more effectively and efficiently without discomfort, so its function needs to be identified at the outset. As awareness of energy efficiency grows, natural lighting is often given more thought at design stage, leaving artificial lighting until later. With both, consideration should be given to associated problems such as overheating and glare.

Cost is often a key factor determining how to achieve client objectives. In the UK lighting consumes about 19% of electricity generated.  With life cycle costing in mind, running and operational costs – as well as the capital cost of the equipment – has become paramount when choosing appropriate lighting types and fittings.

There are also legal requirements, for example: the CDM regulations on emergency lighting and minimum requirements for luminaire ratings for specific room functions, according to the Building Regulations.

Ruby Galloway is associate director at Gleeds


The rates stated below represent a guide to lighting costs and are current as of Q2 2015.  No allowance is made for sundry costs or related preliminaries costs.  VAT is excluded.

All-in rates for lighting points  £ per point
Cost for lighting points including rose and wireways in PVC excluding luminaires
Domestic properties  £42-£47
Industrial and commercial properties  £53-£63
Cost of lighting points including rose and wireways in LSF cable,
excluding luminaires industrial and commercial properties £68-£79

Luminaires – fluorescent internal  £ per unit
Batten 600mm twin, 18W £26-£37
1200mm single/twin, 36W £32-£47/£42-£58
1800mm single/twin, 70W £53-£63/£68-£84
Opal diffuser (surface fixed) 600mm twin, 18W  £47-£58
1200mm single/twin, 36W  £53-£63/£63-£84
1800mm single/twin, 70W £68-£79/£79-£95
Surface mounted linear fluorescent; T8 lamp; high frequency control
gear; low brightness; 65° cut-off; including wedge style louvre
600mm twin, 18W £42-£58
1200mm single/twin, 36W £42-£63/£63-£74
1800mm single/twin, 70W £53-£68/£68-£84
Modular lighting; recessed high frequency control gear, low brightness,
65° cut off; wedge style louvre; fitted to exposed T grid suspended ceiling
600 x 1200mm; 4 x 36W T8 lamps £105-£132
600 x 600mm; 3 x 14W T5 lamps £105-£121
Ceiling recessed asymmetric compact fluorescent downlighter;
high frequency control gear; TCD lamp in 200mm dia. luminaire; f
or wall-washing application
1 x 18W/26W £160-£180
2 x 18W £221-£247
Suspended linear fluorescent; T5 lamp; high frequency control gear;
low brightness; 650 cut off; 30% uplight, 70% downlight;
including wedge style louvre
1 x 50W £221-£242
Semi-recessed ‘architectural’ linear fluorescent; T5 lamp; high
frequency control gear; low brightness, delivers direct,
ceiling and graduated wall washing illumination
600 x 600mm; 2 x 24W T8 lamps £179-£210
600 x 600mm; 4 x 14W T8 lamps £200-£242
500 x 500mm/600 x 600mm: 2 x 24W £168-£210
Downlighter, recessed; low voltage; mirror reflector with
white /chrome bezel; dimmable transformer, for dichroic lamps
85mm diameter x 20/50W £45-£65
118mm diameter x 50W £55-£75
165mm diameter x 100W £132-£158

LED lighting
Typical LED downlight up to 50W £105-£143
Recessed LED office luminaire 40W £221-£274
25A, steel trunking, low voltage, copper conductors, couplers and supports
Three circuit / 1200mm single  £32-£42 / £42-£63

High/low bay luminaires    £ per point
Compact discharge; aluminium reflector 150W-400W £110-£147
Sealed discharge; aluminium reflector 150W-400W £263-£384
Flameproof to IIA/IIB, I.P. 64; aluminium body
600mm single/ 1200mm twin, 18W  £442-£579
1800mm single/twin 70W £579-£716

Luminaires – external
Floodlight, enclosed high performance discharge light, reflector, toughened glass
100W-250W  £137-£305
1500mm circular bollard, vandal resistant with polycarbonate visors
50W-80W  £137-£305

Bollard lighting
Bollard lighting fitting 26W TC-D 3500k including control gear,
all internal wiring, interconnections, earthing and 25m of 2.5 mm²
three core XLPE/SWA/LSF cable
Approximate installed price excl builder’s work in connection  £1,000-£1,400

Outdoor flood lighting
Wall mounted with tungsten halogen lamp, mounting bracket,
wire guard and all internal wiring and containment, fixed
to brickwork or concrete and connected
500W- 1000W  £200-£305


 

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