Overview of DEAP Energy Rating of New Domestic Dwellings to IBCI - PowerPoint PPT Presentation

IBCI Conference- Westport March 2008 Overview of DEAP Energy Rating of New Domestic Dwellings to IBCI Conference March 2008 Dr. Michael McLoughlin Department of Civil Engineering Athlone Institute of Technology

Unit 2 Dwelling Dimensions and Notation used in DEAP Storey height is the total height between the ceiling surface of a given storey and the ceiling surface of the storey below. For a single storey dwelling, or the lowest floor of a dwelling with more than one storey, the measurement should be from floor surface to ceiling surface. 0.25 2.4 First Floor 0.25 Ground Floor 2.4

Unit 2 Dwelling Dimensions and Notation used in DEAP Storey height Used in the determination of the volume of the dwelling which is applied in the ventilation loss worksheet 0.25 2.4 + 0.25 = 2.65 First Floor 0.25 Ground Floor 2.4

Unit 2 Dwelling Dimensions and Notation used in DEAP Number of Stories Used in the determination air change rate. Insulation Cold Roof 0.25 First Floor 2.65 0.25 Ground Floor 2.4 Number of Stories =

Unit 2 Dwelling Dimensions and Notation used in DEAP Number of Stories Used in the determination air change rate. Insulation Warm Roof 0.25 First Floor 2.65 0.25 Ground Floor 2.4 Number of Stories = Is there Fixed Ceiling Access - Therefore -

Unit 2 Dwelling Dimensions and Notation used in DEAP Number of Stories Used in the determination air change rate. Insulation Unheated Space Fixed Access Room in roof built into a pitched roof insulated at rafter level Is there Fixed Ceiling Access - Therefore Number of Stories -

Unit 2 Dwelling Dimensions and Notation used in DEAP Floor Area • Dimensions refer to the inner surfaces of the elements bounding the dwelling. Thus floor dimensions are obtained by measuring between the inner surfaces of the external or party walls, disregarding the presence of any internal walls. • Floor area should be measured as the actual floor area, i.e. if the height of a room extends to two storeys or more only the actual accessible floor area should be entered. However, as an exception to this rule in the case of stairs, the floor area should be measured as if there were no stairs but a floor in their place at each level. • In general, rooms and other spaces, such as built-in cupboards, should be included in the calculation of the floor area where these are directly accessible from the occupied area of the dwelling. However unheated spaces clearly divided from the dwelling should not be included. The following provides specific guidance:

Unit 2 Dwelling Dimensions and Notation used in DEAP Floor Area Used in the determination of the volume of the dwelling which is applied in the ventilation loss worksheet. c d a a b b Plan Plan Ground Floor Area = a x b Ground Floor Area = (a x b) + (c x d)

Unit 2 Dwelling Dimensions and Notation used in DEAP Floor Area Used in the determination of the volume of the dwelling which is applied in the ventilation loss worksheet. Insulation Cold Roof 0.25 10.0 First Floor 2.4 8.0 3.0 0.25 2.4 Ground Floor 1.5 Stairwell Elevation Plan Ground Floor Area = Ground Floor Volume = First Floor Area = First Floor Volume =

Unit 2 Dwelling Dimensions and Notation used in DEAP Internal walls are solid Built in cupboard block 100mm thick each Floor Area accessible from heated with one door 1.2 m wide area (area 0.75 x 1.75) Cold Roof 3.25 9.25 4 0.25 2.65 8 Elevation Plan Average Story Height = Ground Floor Area =

Unit 2 Dwelling Dimensions and Notation used in DEAP Floor Area In General: Include in floor area – all parts of the dwelling directly accessible from within the heated area e.g. • Cupboards • Storage rooms Not included in floor area – all parts of the dwelling not accessed form within the heated area e.g. • Sheds • Garages

Unit 2 Dwelling Dimensions and Notation used in DEAP Floor Area Are the following included as part of the floor area? • Poarch • Conservatory • Storage room and utility room • Basement • Garage • Attic

Unit 2 Dwelling Dimensions and Notation used in DEAP Floor Area Integral Porch or Entrance Lobby (within the building line) Include area in all cases Main Dwelling Area a b Porch Ground Floor Area = a x b

Unit 2 Dwelling Dimensions and Notation used in DEAP Floor Area Porch Include Not Included If fixed heating is If unheated with a supplied separating door Main In this context ‘porch’ Dwelling If there is no means an addition Area separating door protruding from the line of the external wall of the (heated or not) dwelling; an entrance lobby that is within such line should be included . Porch

Unit 2 Dwelling Dimensions and Notation used in DEAP Floor Area Porch No separating porch Heated porch with door (wither porch is separating door heated or not) include porch with include porch with main dwelling main dwelling area area Mains Porch Porch Heat

Unit 2 Dwelling Dimensions and Notation used in DEAP Floor Area Porch Un-heated porch with separating door DO NOT include porch with main dwelling area Un-heated Porch

Unit 2 Dwelling Dimensions and Notation used in DEAP Floor Area Conservatory A conservatory is defined as an extension attached to a dwelling which has not less than three-quarters of the area of its roof and one half of the area of its external walls made of material that allows the transmission of light Include Not Included If not separate from the Dwelling If separate from the Dwelling (DEAP Section 3.1.3) (if not separate it should be considered as an integral part of the dwelling. Hence, glazed ( if separate it should be considered as areas should be entered as glazed components an unheated space ????) DEAP 3.1.4)

Unit 2 Dwelling Dimensions and Notation used in DEAP Floor Area Conservatory A conservatory may be treated as an unheated space if it is thermally separated from the main dwelling. To be considered thermally separated, it must fulfill both of the following: • The walls, floors, windows and doors between it and the main dwelling must have U-values not more than 10% greater than corresponding exposed elements, and , • It must be unheated or, if provided with a heating facility, must have provision for automatic temperature and on-off control independent of the heating provision in the main dwelling.

Unit 2 Dwelling Dimensions and Notation used in DEAP Floor Area Conservatory Thermally separate and resultantly considered an unheated space To be classified a conservatory it must have: not less than ¾ of the area of its roof and ½ of the area of its external walls of materials that allows transmission of light U-value not greater than that of (wall + Main 10%) Dwelling Area Unheated or main heat with a wall separate on/off control

Unit 2 Dwelling Dimensions and Notation used in DEAP Floor Area Conservatory Integral to main dwelling area and resultantly area amalgamated with main dwelling area. Glazed area considered for heat loss and solar gain: To be classified a conservatory it must have: not less than ¾ of the area of its roof and ½ of the area of its external walls of materials that allows transmission of light U-value not greater than that of (wall + Main 10%) Dwelling Area Heated with main heat system with no wall separate on/off control

Unit 2 Dwelling Dimensions and Notation used in DEAP Floor Area Storage rooms and utility rooms Include Not Included if they are directly accessible from the if they are unheated and occupied area of the dwelling, accessible only via a separate whether heated or not external door Basement Include Not Included only if consisting of both if not habitable and heated and habitable rooms heated

Unit 2 Dwelling Dimensions and Notation used in DEAP Floor Area Garage Include Not Included if heated by main if both thermally separate and not heated heating system by main heating system

Unit 2 Dwelling Dimensions and Notation used in DEAP 1.pitched roof insulated either at ceiling level or at rafter level, with roof space converted into habitable space, shown respectively in c) and d) below. Warm roof Cold roof space space a) Insulation at ceiling level b) Insulation at rafter level In the cases of a) and b) the roof space should not be entered as a separate storey. Room in roof Ventilated spaces c) Room in roof built into a d) Room in roof built into a pitched roof insulated at rafter level pitched roof insulated at ceiling level In the cases of c) and d) the floor area of the roof space that is converted into habitable space should be entered as a separate storey.