Building Services Essay

2844 words - 12 pages

THE DESIGN OF THE ELECTRICAL AND ICT SERVICES IN A STOREY RESIDENTIAL BUILDING
SUBMITTED BY
OGUNSAKIN ADEDAMOLA I.
IN PARTIAL FULFILLMENT OF THE AWARD OF BACHELOR OF SCIENCE, B.S.c IN ENGINEERING TO THE DEPARTMENT OF ELECTRICAL/ELECTRONICS ENGINEERING
COVENANT UNIVERSITY.
NOVEMBER 2010.

1.3 SCOPE OF THE DESIGN
The following electrical engineering services are necessary for the design project.
1.3.1 ELECTRICITY SUPPLY
High voltage electric service: considering the amount of power required for this development, the supply from the Power Holding Company of Nigeria (PHCN) is taken from the high voltage side to ensure a more stable or steady voltage. This means that power supply to ...view middle of the document...

1.3.4 GENERAL INTERIOR LIGHTING
General lighting will be recessed down lighters, fluorescent lamp luminaries, halogen lamps, and so on. Lighting fittings will be selected not only for their functionality but also for aesthetics and with a view to integrating them with all areas of purpose in the building.
1.3.5 GENERAL PURPOSE POWER
13A switch socket outlets will be provided and are to be wired in a ring main system with not more than 10 outlets in a ring circuit covering not more than a 100 square meters. Control switch will also be provided to serve mechanical equipment such as air conditioning units, water heaters, ranges and so on. Also isolating switches of appropriate ratings will be for other special equipment that will be put to use in areas like water pump, central air conditioning units etc.
1.3.6 EXTERNAL LIGHTING
External lighting for the purpose of security will be necessary. Wall brackets, wall top and pole mounted luminaries will be employed.
1.3.7 LIGHTNING PROTECTION, EARTHING AND BONDING
Lightning protection, earthing and bonding will be provided for the electrical installations. A ring earth system will be designed and bonded to the Faraday lightning protection cage, and all metal parts like trunking compartment cases, such that an earth impedance of about 20 ohms will be obtained. This will enable all circuit breakers operate properly to provide safety to life from the risk of lightning, electrocution and fire outbreak.
1.3.8 EQUIPMENT SELECTION
All equipment specified for the design of this project will be selected to ensure that as far as possible
* It is simple and spares are available in Nigeria
* Expertise can be made available for maintenance
* Equipment that has a known unsatisfactory history in Nigeria will not be used for this project.
1.3.8 Regulations
The engineering services will be designed in accordance with the requirements of the relevant British Standards, Statutory Authorities and appropriate legislation.

COMPONENTS /REQUIREMENTS OF THE ELECTRICAL SERVICES OF A FIVE STOREY RESIDENTIAL BUILDING .

3.0 INTRODUCTION
In an electrical installation, the utilization as well as the aesthetic aspects of the installation is important. In the concept of this project, these two vital areas will be achieved by the following electrical designs necessary for the installation services in the residential storey building:
* Lighting system
* Power network system
* Communication system
* Automatic fire detection and alarm system
* Lightning protection system

3.1 LIGHTING
Lighting or illumination is the deliberate application of light to achieve some aesthetic or practical effect. Lighting includes use of both artificial light sources such as lamps and natural illumination of interiors from daylight. Daylighting (through windows, skylights, etc.) is often used as the main source of light during daytime in buildings given its low cost. Artificial lighting represents a...

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