Section 2(11) in Kolkata Municipal Corporation Building Rules, 2009
(11)"building services" in relation to a building means lighting and ventilation, electrical and allied installations, air-conditioning, heating and mechanical ventilation, acoustics, sound insulation and noise control, installation of lifts and escalators, water supply, drainage and sanitation, gas supply, landscaping, signs and outdoor display structures, fire fighting and safety arrangements, solid waste management, electronic and telecommunication installations;
