National Calculation Methodology (NCM) - Scottish Government

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55. If in a certain space in the actual building, the service strategy includes mechanical cooling, an improvement factor of 0.9 is applied when calculating the cooling load for the corresponding space in the notional building. It is intended that this reduction in the emissions arising from the cooling component of the notional building will encourage the use of passive and low carbon cooling solutions. 56. If in a certain space in the actual building, the heating fuel is grid-supplied electricity (whose CO2 emission factor increased from 0.422 kgCO2/kWh in 2007 to 0.517 kgCO2/kWh in 2010), the heating load of the corresponding space in the notional building is adjusted by a factor which maintains the 2007 relationship of grid electricity to the gas/oil baselines. The adjustment factors increase the notional building’s CO2 emissions for heating, and consequently the TER, as described below: a. If the notional building’s heating fuel is determined to be natural gas, whose CO2 emission factor increased from 0.194 kgCO2/kWh in 2007 to 0.198 kgCO2/kWh in 2010, the heating load in the notional building is multiplied by a factor of 1.2. This factor has been calculated using: (0.194x0.517)/(0.198x0.422)=1.2 b. If the notional building’s heating fuel is determined to be oil, whose CO2 emission factor increased from 0.265 kgCO2/kWh in 2007 to 0.297 kgCO2/kWh in 2010, the heating load in the notional building is multiplied by a factor of 1.09. This factor has been calculated using: (0.265x0.517)/(0.297x0.422)=1.09 57. Emissions calculations for both the actual and notional buildings must use the CO2 emission factors shown in Table 6. 20
Table 6: Carbon dioxide emission factors Fuel type Natural Gas 0.198 LPG 0.245 Biogas 0.018 Oil 0.297 Coal 0.35 Anthracite 0.318 Smokeless Fuel (inc. Coke) 0.344 Dual Fuel Appliances (Mineral + Wood) 0.206 Biomass 0.013 Grid Supplied Electricity 0.517 Grid Displaced Electricity 0.529 Waste Heat 0.058 Modular and Portable Buildings Emission factor kgCO2/kWh 58. For modular and portable buildings, the TER must be adjusted as described in Annex 6.C of Section 6. Annex 6.C also specifies the fabric limiting standards for these types of buildings. Shell Buildings 59. In the context of application for building warrant, a shell building is defined as a building where elements of the fixed building services are absent and further installation work will be required before the building can be occupied and used. A staged building warrant, covering both shell and subsequent fit out work, is not subject to the following process. 60. Shell buildings are subject to the compliance check against the TER under the conditions specified in clause 6.1.10 of Section 6. Guidance on provisions and details of the limiting standards for shell and fit out buildings are specified in clauses 6.2.3, 6.2.4, 6.2.5, and 6.2.6 of Section 6. 61. Assessment under standard 6.1 is required both for the shell building warrant and also for the subsequent fit-out works, provided a continuing requirement in this respect is placed upon the shell warrant. Regardless of whether or not a building warrant is required for fit-out work, this continuing requirement must be discharged before the building can be occupied (refer to clause 5.6 of the BSD Procedural Handbook). Assessment of the fit-out work should be made using the category ‘other buildings’ under ‘S6 type of building’. 62. Assessment of the shell building should show that the building, as completed, could meet standard 6.1. This is done by providing a completed service specification for each zone, identifying which services are to be installed as part to shell works and which are assumed to form part of a subsequent fit-out. Assumed
Page 1 and 2: Directorate for the Built Environme
Page 3 and 4: Contents. Contents 3 List of Tables
Page 5 and 6: BER Building Emission Rate BSD Buil
Page 7 and 8: 2 Approved Software Tools. 5. Non-d
Page 9 and 10: of building or building features. T
Page 11 and 12: Building Fabric 26. The U-values in
Page 13 and 14: Methods that use flow networks are
Page 15 and 16: egarded as being mechanically venti
Page 17 and 18: d. The electricity used by fossil-f
Page 19: . For other spaces, divide the illu
Page 23 and 24: 4 Energy Performance Certificates (
Page 25 and 26: 5 Input Data to Approved Tools. 74.
Page 27 and 28: d. Any fuel used in generating the
Page 29 and 30: Table 8: Measurement and other conv
Page 31 and 32: pressure filtration is also defined
Page 33 and 34: Building Type Description 16 Non-re
Page 35 and 36: Activity Type Description 33 Generi
Page 37 and 38: Construction and Glazing Databases
Page 39 and 40: ID Category Construction Name 518 P
Page 41 and 42: ID Category Construction Name 565 P
Page 43 and 44: 101. It may also be that more compl

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