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Domestic GDA – 5. Building Physics, Regulations, Lighting1Training Material © Stroma Certification 2013 | Version 1.3 ABBE Level 3 Diploma in Domestic Green Deal Advice 5. Regs, Building Physics, Energy Efficient Lighting ① Regulations ② Building Physics ③ Energy-Efficient Lighting Presented by Stephen Derbyshire
Domestic GDA – 5. Building Physics, Regulations, Lighting2Training Material © Stroma Certification 2013 | Version 1.3 Regulations
Domestic GDA – 5. Building Physics, Regulations, Lighting3Training Material © Stroma Certification 2013 | Version 1.3 General Regulations All measures fundable through Green Deal will still be subject to relevant: Building regulations. Planning restrictions. Listed building consent. Any other building compliance guide.
Domestic GDA – 5. Building Physics, Regulations, Lighting4Training Material © Stroma Certification 2013 | Version 1.3 General Regulations Building Regulations What? Building Regulations set standards for the design and construction of buildings, to ensure the safety and health for people in or around those buildings. They also include requirements to ensure that fuel and power is conserved, and facilities are provided for people, including those with disabilities, to access and move around inside buildings.
Domestic GDA – 5. Building Physics, Regulations, Lighting5Training Material © Stroma Certification 2013 | Version 1.3 General Regulations Building Regulations The fourteen technical "Parts" of the Building Regulations' requirements are: Part A (Structural safety) Part B (Fire safety) Part C (Resistance to contaminants and moisture) Part D (Toxic Substances) Part E (Resistance to sound) Part F (Ventilation) Part G (Sanitation, Hot Water Safety and Water Efficiency) Part H (Drainage and waste disposal) Part J (Heat producing appliances) Part K (Protection from falling) Part L (Conservation of fuel and power) Part M (Access to and Use of Buildings) Part N (Glazing safety) Part P (Electrical Safety)
Domestic GDA – 5. Building Physics, Regulations, Lighting6Training Material © Stroma Certification 2013 | Version 1.3 General Regulations Part L Part L concerns itself with the conservation of fuel and power, containing the following: Approved Document L1A: New dwellings. Approved Document L1B Existing dwellings. Approved Document L2A: New buildings other than dwellings. Approved Document L2B Existing buildings other than dwellings.
Domestic GDA – 5. Building Physics, Regulations, Lighting7Training Material © Stroma Certification 2013 | Version 1.3 General Regulations Approved Document L1B Existing Dwellings What’s in it? Part L1B contains the required standards of controlled services and fittings and building elements in order to meet building regulations compliance concerned with energy efficiency requirements for existing dwellings. It references other documents, for example: Domestic building service compliance guides containing specific content on how to comply with the regulation, available from the CLG planning portal.
Domestic GDA – 5. Building Physics, Regulations, Lighting8Training Material © Stroma Certification 2013 | Version 1.3 General Regulations Planning Restrictions Planning seeks to guide the way our towns, cities and countryside develop. This includes the use of land & buildings, the appearance of buildings, landscaping considerations, highway access and the impact that the development will have on the general environment. Built within the planning regulation documents are specific restrictions which must be adhered to and followed when installing particular measures e.g. solar panels (PV or solar thermal), which are covered under Permitted Development laws, but when in Conservation Areas, permission is needed prior to the installation.
Domestic GDA – 5. Building Physics, Regulations, Lighting9Training Material © Stroma Certification 2013 | Version 1.3 General Regulations Listed Building Consent English Heritage is the Government's statutory advisor on the historic environment. Their principal powers and responsibilities are set out in the National Heritage Act (1983). Listed Building Consent is administered by your local authority. If the application involves a Grade I or Grade II listed building, demolition, or is particularly complicated, the case will be forwarded to English Heritage for expert advice. Listed status covers a whole building, inside and out. Common works requiring consent might include the replacement of windows or doors, knocking down internal walls, painting over brickwork or altering fireplaces. Carrying out unauthorised works to a listed building is a criminal offence and individuals can be prosecuted.
Domestic GDA – 5. Building Physics, Regulations, Lighting10Training Material © Stroma Certification 2013 | Version 1.3 General Regulations Housing Health and Safety Rating System (HHSRS) This HHSRS does not set out minimum standards. It is concerned with avoiding or, at the very least, minimising potential hazards. The Act provides local authorities with new duties and powers to tackle poor housing conditions. The idea behind the Act is that local authorities will give priority to dealing with the greatest risks to health and safety in dwellings.
Domestic GDA – 5. Building Physics, Regulations, Lighting11Training Material © Stroma Certification 2013 | Version 1.3 Building Physics
Domestic GDA – 5. Building Physics, Regulations, Lighting12Training Material © Stroma Certification 2013 | Version 1.3 General Building Physics Building physics is the application of the scientific principles to building elements and services. Building physicists (designers, architects, engineers) bring a fundamental understanding of physics to improving the design of building fabrics and surrounding spaces. In relation to: Thermal mass. Thermal comfort. Efficiency and responsiveness of heating systems. All three factors combined will effect the energy usage of a building.
Domestic GDA – 5. Building Physics, Regulations, Lighting13Training Material © Stroma Certification 2013 | Version 1.3 General Building Physics Thermal Mass Thermal mass is a term that describes the ability of a material to store heat; something many construction materials can do to varying degrees. To be useful in the built environment, they must also be able to absorb and release heat at a rate roughly in step with a building’s daily heating and cooling cycle. For example: Concrete and masonry products do this well and, being dense materials, can also store a lot of heat. Timber absorbs heat too slowly to offer much effective thermal mass. Steel conducts heat too rapidly to be in sync with a building’s natural heat flows over the day.
Domestic GDA – 5. Building Physics, Regulations, Lighting14Training Material © Stroma Certification 2013 | Version 1.3 General Building Physics Thermal Mass Heat through a solid material (Brick, Stone) around at a rate of 1inch per hour Insulation prevents/ slows heat transfer sometimes locking out the benefits of the thermal mass of the walls External wall insulation (EWI) is a way to take advantage of the thermal mass befits and insulation benefits
Domestic GDA – 5. Building Physics, Regulations, Lighting15Training Material © Stroma Certification 2013 | Version 1.3 General Building Physics Thermal Comfort The six factors affecting thermal comfort are environmental and personal. These factors may be independent, but together contribute to a persons thermal comfort. Environmental factors: Air temperature. Radiant temperature. Air velocity. Humidity. Personal factors: Clothing insulation. Metabolic heat.
Domestic GDA – 5. Building Physics, Regulations, Lighting16Training Material © Stroma Certification 2013 | Version 1.3 General Building Physics Efficiency and responsiveness of heating systems Efficiency The ability to get the maximum usable energy out of the available fuel source. For the household fuel cost has a direct impact upon the efficiency. e.g. Condensing oil boiler. Condensing gas boiler. Responsiveness of heating systems How quickly the heating system responds to heating demand. From a cold start how quickly will the heating system bring the building to desired temperature?
Domestic GDA – 5. Building Physics, Regulations, Lighting17Training Material © Stroma Certification 2013 | Version 1.3 General Building Physics Efficiency and responsiveness of heating systems - Controls Both the efficiency and responsiveness will also depend upon the controls used in conjunction with the heating appliance. These may include: -Room thermostats. -TRVs. -Programmer. -Boiler energy management system.
Domestic GDA – 5. Building Physics, Regulations, Lighting18Training Material © Stroma Certification 2013 | Version 1.3 Energy-Efficient Lighting - Advice
Domestic GDA – 5. Building Physics, Regulations, Lighting19Training Material © Stroma Certification 2013 | Version 1.3 Energy Efficient Lighting Lighting accounts for 8% of a typical household’s energy bills, and cutting your lighting bill is one of the easiest ways to save energy and money in the home. During the Green Deal Assessment, advice must therefore be given to the customer on their lighting. If you replace a traditional light bulb with a compact fluorescent bulb of the same brightness you will typically save around £3 per year, or £55 over the life of the bulb. If you replace a 50W halogen down lighter with a 6W LED you will typically save around £4 per year, or £70 by the time you have to replace the bulb. 95% of the energy used in a traditional light bulb is lost as heat.
Domestic GDA – 5. Building Physics, Regulations, Lighting20Training Material © Stroma Certification 2013 | Version 1.3 Traditional Light Bulbs vs. Fluorescents Traditional light bulbs, known as tungsten filament or GLS (General Lighting Service) bulbs, are extremely inefficient. Only about 5% of the electricity they use is converted into visible light. The tungsten filament bulb was invented about 100 years ago. In compact fluorescents, a gas inside a glass tube is charged up so that it glows. This causes a coating on the inside of the glass tube to 'fluoresce', giving off the white light that we want. CFLs use about 20% to 25% of the electricity that an equivalent GLS lamp will use.
Domestic GDA – 5. Building Physics, Regulations, Lighting21Training Material © Stroma Certification 2013 | Version 1.3 LED & Non-LED Light Bulbs Compared FeaturesTraditional (Incandescent) Bulbs Fluorescent (CFL) BulbsLED Bulbs Watts per bulb60W14W6W Life span of each bulb1,200 hours10,000 hours60,000 hours Electricity used in 60,000 hours 3,600kWh840kWh360kWh Cost of electricity at £0.20 per kWh £720£168£72 No. of bulbs required over 60,000 hours 5061 Cost per bulb£1.25£2.98£15.98 Bulb cost over 60,000 hours £62.50£17.88£15.98 Total lighting cost per 60,000 hours £782.50£185.88£87.88
Domestic GDA – 5. Building Physics, Regulations, Lighting22Training Material © Stroma Certification 2013 | Version 1.3 LED & Non-LED Cost Comparison Traditional (Incandescent) Bulbs Fluorescent (CFL) Bulbs LED Bulbs Cost per bulb£37.50£89.40£479.40 Number of bulbs that you would require for 60,000 hours5061 Bulb costs for 60,000 for 30 bulbs of each£1,875£536.40£479.40 Electricity cost for 60,000 hours£21,000£5,040£2,160 Total lighting cost of 30 bulbs for 60,000 hours£23,475£5,576.40£2,639.40 Thus, if you replace an incandescent or CFL bulb with an LED bulb, you could save a significant amount of money – running into the thousands of pounds – on electricity consumption and costs of bulbs over the lifetime of the bulbs. Using LED bulbs will dramatically reduce your lighting costs and you will reap the environmental benefits of using energy efficient lighting.
Domestic GDA – 5. Building Physics, Regulations, Lighting23Training Material © Stroma Certification 2013 | Version 1.3 Controls Presence detectors to control lighting can be a way of reducing energy by only providing illumination when necessary. Places that are infrequently used will benefit the most: External areas. Garages. Walk in wardrobes. Under the stairs. Basements. Lofts.
Domestic GDA – 5. Building Physics, Regulations, Lighting24Training Material © Stroma Certification 2013 | Version 1.3 Questions?
Domestic GDA – 5. Building Physics, Regulations, Lighting25Training Material © Stroma Certification 2013 | Version 1.3 Stroma Certification Ltd. 4 Pioneer Way, Castleford, WF10 5QU 0845 621 11 11 firstname.lastname@example.org Web Links www.stroma.com/certification Contacts
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