Bungalow design for a disabled client. Discuss the form of construction and compare the advantages and disadvantages of your choice and form of materials.
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DEGREE COURSE: PROPERTY MARKETING, DESIGN AND DEVELOPMENT MODULE: DESIGN AND CONSTRUCTION BRIEF: YOUR CLIENT, A HOUSING ASSOCIATION, WISHES TO PROVIDE THE FOLLOWING HOME (AS A DETACHED BUNGALOW) FOR THE FOLLOWING RESIDENTS: ONE - 3 BEDROOMED HOME WITH GROSS INTERNAL FLOOR AREA OF APPROXIMATELY 120m2 FOR ONE PHYSICALLY DISABLED PERSON (WHO RELIES UPON A WHEELCHAIR AND A SPECIALLY ADAPTED MOTOR VEHICLE) AND ONE CARE ASSISTANT. JANUARY 2007 1. Sketch the proposed plan layout and elevations for the bungalow Discuss the form of construction and compare the advantages and disadvantages of your choice and form of materials. Illustrate and describe the proposed method of constructing the roof and state the reasons for the choice of materials and design. There is now an increasing array of options for the house builder e.g. Masonry Shell, Timber Frame, Steel Frame, Insulated Concrete Forms - ICFs, Pods and Prefabs, Structural Insulated Panels - SIPs, Green Oak and Post Beam Structures, use of unusual structural materials e.g. earth, straw bales, hemp etc. (1) My design is a three bedroom timber framed bungalow externally faced with brick. The roof will be covered with concrete interlocking tiles and the timber windows and french doors will be double glazed. A covered carport will be provided at the side of the property, with a slip resistant surface illuminated by a PIR sensor.
(3) * Changes to the timber frame are not easily achieved once the frame has been manufactured. * Because all walls are timber stud, noise transmission between rooms must be addressed. There are effective dense soundproofing materials that can be used in timber frame such as "Soundslab" (Appendix E). * The building of the superstructure is taken away from the site crew into the hands of the sub-contractor - the timber frame company. As the plot is flat, free of contamination and surface obstructions, a strip foundation will be used, together with a pre-cast beam and block floor, insulated in accordance with manufacturer's instructions. This is a relatively straightforward roof and will be designed / constructed as an integral part of the timber frame package. Special attic trusses will be specified to provide a structural roof and floor in the same component (Appendix C). This detail is cost effective and will allow conversion of the attic space into habitable rooms, should this be required at a later date. The roof will be covered with concrete interlocking roof tiles which will be nailed to softwood treated battens laid over a breathable membrane, in accordance with building regulations and Housing Association criteria. Forticrete "Gemini" concrete tiles will be specified because they are award winning, competitively priced tiles guaranteed for 60 years (Appendix D).
and windows. * Every habitable room will have a window which can be opened for ventilation. When the windows are closed, the trickle vents fitted to each window can be left open. In the bathroom, bedroom 1 en-suite and the kitchen, there will be electric extractor fans fitted. In the lounge there will be an air inlet to provide ventilation for the gas fire. * All internal and external lighting will be installed in accordance with Building Regulations (Approved Document L1A - Conservation of fuel and power 2006). To achieve the desired Target Emission Rate (TER) as scheduled within the document, internal low energy lighting points will be used at a ratio of one per every four fixed light fittings, or at least one per 25m2 dwelling floor area excluding garages, whichever is the greater. Low energy light bulbs are 80% more efficient and produce the same output as traditional bulbs and they last ten times as long. External lighting will be designed to accommodate only compact fluorescent lamps (CFL) or strip lights. External security lights will have a maximum wattage of 150 watts and be fitted with movement detecting shut-off devices (PIR) and daylight cut-off devices. * Energy efficient A rated appliances will be installed. * Water saving features will include low flush toilets, spray taps and external water butts to harvest rainwater for the garden - a minimum of 200 litres is specified by the Housing Association. * Waste separation facilities will be provided in the kitchen to encourage waste recycling.
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