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Table 1: Simplified luminance limits
Max brightness above 65°
Screen typeWhite screen backgroundBlack screen background
Class 1 & 21500 cd/m21000 cd/m2
Class 3500 cd/m2200 cd/m2
Table 2: Cat A luminaire, lighting installation and lighting controls costs
Component QuantityMaterial cost/unit (£)Installed cost/unit (£)Total (£) £/m2 based on net internal area
Semi-recessed 600 mm x 600 mm with dropped aerofoil to open plan areas, inc 3 x 14 W T5 lamps 6580 140 160 1,052,800Ìý
As above, with emergency lighting pack1170 205 230 26,9100Ìý
Recessed compact fluorescents, inc 2 x 18 W lamps1010 60 80 80,800Ìý
Extra for dimming ballasts8760 12 –105,120 Ìý
TOTAL LUMINAIRE COST ÌýÌýÌý1,507,82044.35
Cable tray c/w supports1050 m 25 26,250Ìý
Armoured cable fixed to tray2240 m 5 11,200Ìý
Armoured cable terminations280 28 7840 Ìý
40 A lighting busbar, inc end feeds and suspension brackets4060 mÌý28 113,680Ìý
LCM tap off and lead1050 15 15,750Ìý
4·5 m lsf flexible final connection to luminaire8760 8 70,080 Ìý
Testing and commissioningÌýÌýÌý7000Ìý
TOTAL LIGHTING INSTALLATION COST ÌýÌýÌý251, 800 7.41
Area control units 28 800 900 25,200Ìý
Lighting control modules including plug-in base 1050 150175 183,750 Ìý
Bus cable to lighting control modules 10,810 m 0·2 1 10,810 Ìý
Presence detectors including sensor lead to lighting control modules 28 50 65 1820 Ìý
Multi-detector including sensor lead to lighting control module 56 65 80 4480 Ìý
Support services and commissioning based on factory presets ÌýÌýÌý20,000 Ìý
TOTAL CONTROLS COST FOR CAT A ÌýÌýÌý246,060 7.24
TOTAL COST, TO CAT A ÌýÌýÌýÌý59.00
Exclusions applying to Tables 2: builders work in connection; professional and prescribed fees; main contractor preliminaries and attendances; contingencies and design reserve; inflation beyond fourth quarter 2004; tax allowances; vat.