Brochures Design Project of a Three Bed Room House Part 1

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Transcript Shah HamidJalali Electrical Design Project of a Three Bed Room House (Part 1) Electrical design project of a three bed room house (Part 1) Requirements and Standards Electrical design is not an easy task. It requires a lot of expertise. Detailed study is needed prior to installationwork. The engineer must consider quality and any specific requirements together with price. Different options areto be examined. Choice of room utilization, decor, hobbies and the activities of the various residents are nowcritical to electrical design. Electrical installation cannot make universal provision for every conceivable arrangement. Customer is the key person in determining the final arrangement. BS 7671  (the Wiring Regulations) will oftenrecommends that a project should be discussed with the client.Flexible design approach is now often practiced. Standards for the house industry are determined by the NationalHouse Building Council (NHBC) . The minimum requirements The following is an outline of basic requirements for a three-bedroom house with 120m 2  floor area. This would bea typical speculative estate development (Figure 2).  1. Rooms:  small kitchen; dining room; lounge; downstairs cloakroom; main bedroom with en-suite bathroom;second double bedroom; small single bedroom; landing bathroom or shower room;2. Heating:  central heating by gas or oil;3. Garden:  small garden at both front and rear. Figure 1 – Bathroom zones StandardsNational House Building Council (NHBC) The NHBC give minimum standards for living accommodation and services, which are shown in Table 1 . It shoulbe noted that houses vary in size and use, so the values given should be considered as a minimum. Table 1 – NHBC recommendations for a house. 13 A socket-outlets (twin socket count as two outlets) RoomOutletsNotes Kitchen/Utility  6Where homes have separate areas, the kitchen should have a minimum of four outlets and the utility room two. Utility  3Where appliances are provided, at least three outlets should be for general use. Dining room  3 Living room  4At one double outlet family room should be near the TV aerial outlet Bedroom  3 (2)Three for main bedroom. Two for other bedrooms Landing  1 Hall  1Combined rooms should have sockets equal to the sum of the number for individual rooms, with a minimum of seven in the case of kitchen / utility and another room. Lighting Every room should have at least one lighting point. Two-way switching should be provided to staircases.  Smoke detectors For this two-story house, two mains operated, interconnected alarms are required. Relevant wiring regulations 13 A socket-outlets 1. Building Regulations now require socket-outlets, wall switches and other similar accessories to be sited inhabitable rooms at appropriate heights of between 450 and 1200mm from the finished floor levels.2. Any socket-outlet with a rated current not exceeding 20 A, which is used by ordinary persons’ equipmentfor outdoors use must be provided with additional protection by means of a 30mA RCD.3. No 230V sockets, except shaver sockets complying with BS EN 61558-2 are permissible in bathrooms andshower rooms.4. 230V socket-outlets must be located at least 3m outside the boundary of zone 1 and provided with 30mARCD protection. Lighting  1. To avoid danger and inconvenience, there should be more than one lighting circuit.2. In a bathroom, all equipment must be suitable for the zone in which it is installed.3. Wall switches and other accessories must not be installed in zones 0, 1 and 2.4. Cord switches must be installed outside of zones 0, 1 and 2, but the cord may hang within zones 1 and 2.5. There are restrictions on the current-using equipment in zones 0, 1 and 2.6. Equipment that is installed in zones 1 and 2 must have water penetration protection of at least IPX4.7. A careful study of BS 7671: (Most recent version) Section 701 is recommended.  Figure 2 – Typical three bedroom house Will be continued soon… Sufi Shah Hamid Jalali - B.Sc. in Electrical Engineering. Designer of websites. Currentlyworking as Electrical Engineer at Aga Khan Foundation, Afghanistan. Likes to write and shareknowledge of Electrical Engineering. Knows Primavera P6, Graphics, Professional AutoCAD andProject Management.RSS Feed for Comments 10 Comments RSS Feed for Comments Leave a Comment


Jul 26, 2017
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