Building Regulations Part L 2013 For England Ant Wilson Director/AECOM Fellow Building Engineering AECOM 1 st May 2014
2 Building Byelaws Thermal Insulation
3 Bringing in Part L 2002 Working With DETR 1995 replaced the 1990 AD Single Document 76 pages 2002 replaced the 1995 AD Two Documents L1 & L2
4 Building Regulations Part L (2006) With ODPM Ant Wilson, Director, Faber Maunsell
5 Conservation of Fuel and Power - Part L 2010
6 Energy Performance of Buildings - What Does It Mean For You? The EPBD drives requirements for Building Regulations, Energy Performance and Display Energy Certificates, Plant inspections. The recent recast places additional requirements on both the public and private sector to be implemented soon. Recast is 31 Articles over 16 pages And five annexes over 7 pages
7 EPBD Recast 2010 Articles 3-10 Article 3 Adoption of a methodology for calculating the energy performance of buildings Article 4 Setting of minimum energy performance requirements Article 5 Calculation of cost-optimal levels of minimum energy performance requirements Article 6 New buildings Article 7 Existing buildings Article 8 Technical building systems Article 9 Nearly zero-energy buildings Article 10 Financial incentives and market barriers
8 Article 5 - Calculation of Cost-optimal Levels Calculation of cost-optimal levels of minimum energy performance requirements 1. The Commission shall establish by means of delegated acts in accordance with Articles 23, 24 and 25 by 30 June 2011 a comparative methodology framework for calculating cost-optimal levels of minimum energy performance requirements for buildings and building elements. The comparative methodology framework shall be established in accordance with Annex III and shall differentiate between new and existing buildings and between different categories of buildings. 2. Member States shall calculate cost-optimal levels of minimum energy performance requirements using the comparative methodology framework established in accordance with paragraph 1 and relevant parameters, such as climatic conditions and the practical accessibility of energy infrastructure, and compare the results of this calculation with the minimum energy performance requirements in force.
9 Cost-optimal Levels for Energy Performance 14. cost-optimal level means the energy performance level which leads to the lowest cost during the estimated economic lifecycle, where: (a) the lowest cost is determined taking into account energy-related investment costs, maintenance and operating costs (including energy costs and savings, the category of building concerned, earnings from energy produced), where applicable, and disposal costs, where applicable; and (b) the estimated economic lifecycle is determined by each Member State. It refers to the remaining estimated economic lifecycle of a building where energy performance requirements are set for the building as a whole, or to the estimated economic lifecycle of a building element where energy performance requirements are set for building elements. The cost-optimal level shall lie within the range of performance levels where the cost benefit analysis calculated over the estimated economic lifecycle is positive;
10 Cost-optimality Calculations
11 EPBD Cost-optimal Solutions (To Set Regulations)
12 Must Review High-Efficiency Alternative Systems For new buildings, Member States shall ensure that, before construction starts, the technical, environmental and economic feasibility of high-efficiency alternative systems such as those listed below, if available, is considered and taken into account: (a) decentralised energy supply systems based on energy from renewable sources; (b) cogeneration; (c) district or block heating or cooling, particularly where it is based entirely or partially on energy from renewable sources; (d) heat pumps. 2. Member States shall ensure that the analysis of alternative systems referred to in paragraph 1 is documented and available for verification purposes. 3. That analysis of alternative systems may be carried out for individual buildings or for groups of similar buildings or for common typologies of buildings in the same area. As far as collective heating and cooling systems are concerned, the analysis may be carried out for all buildings connected to the system in the same area.
13 The Building Regulations 2010
14 Part 6 Energy Efficiency Requirement
15 Part 8 & Part 9
16 IPCC Climate Change 2013 Summary for Policymakers
17 Various Climate Change Indicators Snow, Ice, Oceans & Sea Levels
18 Atmospheric CO 2 Concentration at Mauna Loa Observatory
19 UK Production of Primary Fuels 1970 to 2012 - DUKES 2013
20 UK Energy Production and Consumption 1970 to 2012 (Money)
21 UK Electricity Flow Chart 2012 (TWh) from DUKES 2013
22 Cost Optimality Depends on Fuel Prices
23 US Natural Gas Prices
24 UK Electrical Generation by Fuel Type 26-27 March 2014
25 Half Hour Electricity Price in the UK
26 Building Regulations 2010-2013 Approved Documents Amendments
27 Fixed Building Services Definition
Nearly Zero-energy Requirement for New Buildings Regulation 25B Regulation 25B Nearly zero-energy requirements for new buildings will not come into force until 2019 at the earliest. Statutory guidance on compliance with Regulation 25B is not included within this Approved Document and will be provided nearer to the time it comes into force. 28
29 Fabric Energy Efficiency Rates in Regulation 25 and 26A
30 New Building Regulations Part L Coming in on 6 th April 2014
31 Welsh Part L 2014 Building Regulations
32 Useful Flow Chart in the Welsh Version of Part L 2014
33 Approved Document L1A 2013 Edition
34 Approved Document L1A 2013 Edition - Content
35 Main Changes to ADL1A 2013 Fabric energy efficiency target introduced for new homes. Part L 2013 Strengthened to deliver 6% carbon dioxide savings across the new homes building mix relative to Part L 2010.
36 Building Regulations Part L of Schedule 1
37 New-Build Dwellings 2013: The Five Compliance Steps 1. Achieving the TER (Regulation 26) and the TFEE (Regulation 26A) Domestic Emission Rate (DER) Target Emission Rate (TER) and Dwelling Fabric Energy Efficiency (DFEE) Target Fabric Energy Efficiency (TFEE) 2. Limits on design flexibility 3. Limiting the effects of heat gains in summer 4. Building Performance Consistent with DER - Quality of construction & commissioning (Regulation 43 & 44) 5. Provisions for energy efficient operation of the dwelling - Providing information / O&M instructions (Regulation 40)
38 Building Regulations 24 and 25
39 Key Changes in SAP 2012
40 CO 2 Emission Factors by Fuel Type in SAP 2012
41 Approved SAP 2012 Software for Compliance and EPC Generation
42 Emissions Compliance Checks for Part L 2013
43 Consideration of High-efficiency Alterative Systems Renewable Energy Sources CHP or CCHP District Heating Heat Pumps
44 Consideration of High-efficiency Alterative Systems Cont. CHP or CCHP District Heating Renewable Energy Sources Heat Pumps
45 Regulation 27 of the Building Regulations 2010
47 Notional Dwelling Specification in ADL1A 2013 - Fabric
48 Notional Dwelling Specification in ADL1A 2013 - Systems
49 Notional Dwelling Specification in ADL1A 2013 - Notes
50 Limits on Design Flexibility Criterion 2 (ADL1A 2013) To satisfy the TER and the TFEE rate, the building specification needs to be considerably better the stated limiting values.
51 Limiting Fabric Parameters (ADL1A 2013)
52 Comparison of English and Welsh: Criteria 2 Fabric Limits Fabric elemental backstops have been updated in Wales for 2014 Whereas in Part L 2010 the limits were advisory, they are now mandatory for Part L 2014 in Wales. The English Part L backstops continue to be advisory and same values as Part L 2010 for Part L 2013 Limiting Fabric Parameters English 2013 Welsh 2014 Roof W/m 2.K 0.20 0.15 External Wall W/m 2.K 0.30 0.21 Floor W/m 2.K 0.25 0.18 Party Wall W/m 2.K 0.20 0.20 Windows, doors, curtain walling W/m 2.K 2.0 1.60 Air permeability m 3 /hr.m -2 @50Pa 10 10
53 Limiting System Efficiencies (ADL1A 2013) Domestic Building Services Compliance Guide Fixed Building Services
54 Criterion 3 Changes: Limiting the Effects of Heat Gains in the Summer Change in title stresses that it is not just solar gains that need to be controlled during the summer period It highlights the need to insulate circulation pipes for domestic hot water For example: feedback is that in apartment blocks, poorly insulated pipes in communal areas can contribute to overheating This guidance is in the Domestic Building Services Compliance Guide Note: The Government is investigating more widely the causes and impact of overheating in a changing climate and potential policy options
55 Criterion 4 - Air Permeability and Pressure Testing - 2013
56 Criterion 4 - Commissioning in ADL1A 2013
57 Criterion 5 Changes: Provision of Information Provides more details of what this information should contain Content: Explanation of essential design principles and key features Floor plans to show main heating and ventilation components Explain how to operate, control and maintain building services and LZCs Signpost other key information that should be provided including appliance manuals, EPC recommendation report
ADL1A Example Routes to meet the TER and TFEE - End Terrace 76m 2 Ground Floor First Floor 58
59 Typical CO 2 Emissions from 76m 2 Part L 2013 End of Terrace House
60 Example Routes to Meet the TER and TFEE for End Terrace 76m 2
ADL1A Example Compliance Routes for Detached House 118m 2 Ground Floor First Floor 61
62 Annual Energy use in End of Terrace and Detached Home
63 ADL1A Example Compliance Routes for Detached House 118m 2 Appendix R Detached Detached Relaxed Fabric + Relaxed Fabric + Elemental Recipe PV SHW Ext. Walls (W/m²K) 0.18 0.26 0.26 Party Walls (W/m²K) 0 0 0 Floor (W/m²K) 0.13 0.2 0.2 Roof (W/m²K) 0.13 0.18 0.18 Windows (W/m²K) 1.4 1.4 1.4 Air tightness (m³/hr.m²) 5 5 5 Gas boiler 89.5% (SEDBUK) 89.5% (SEDBUK) 89.5% (SEDBUK) Services 0.48 kwp PV SHW TER (kgco 2 /m 2.yr) 17.44 17.44 17.44 DER (kgco 2 /m 2.yr) 17.44 17.44 <17.3 TFEE (kwh/m 2.yr) 59.20 59.20 59.20 DFEE (kwh/m 2.yr) 51.48 59.19 59.19
64 Example Routes to Meet the TER and TFEE 2 Bed Flat 67m 2
65 2 bed Top Floor Flat 67m 2 - Base Case % Glazing Test Large Top Floor Flat (corner) Recipe Specification (NE orientation) Glazing % TFA 25% 35% 45% Glazing % Facade [inc. Doors] 42% 58% 75% External Wall (W/m²K) 0.18 0.18 0.18 Windows (W/m²K) 1.4 1.4 1.4 Frame Factor 0.7 0.7 0.7 G value 0.63 0.63 0.63 TER (kgco 2 /m 2.yr) 19.58 19.64 19.7 DER (kgco 2 /m 2.yr) 19.58 20.08 20.62 TFEE (kwh/m 2.yr) 54.25 54.55 54.86 DFEE (kwh/m 2.yr) 47.17 49.76 53.09
66 Domestic Building Services Compliance Guides 2013 Editions
67 Domestic Building Services Compliance Guide 2013 Edition
68 Summary of Domestic Recommended Energy Efficiency Standards
69 Heat Pumps, Comfort Cooling and Solar Water Heating
70 2013 Minimum Standards for Fixed Internal & External Lighting
71 Approved Document L2A 2013 Edition
72 Content of Approved Document L2A 2013
73 Main Changes to Approved Document L2A 2013 Part L 2013 Strengthened to deliver 9% carbon dioxide savings across the new non-domestic building mix relative to Part L 2010.
74 Achieving the Target Emission Rate ADL2A 2013
75 BRE Modifications to SBEM for Version 5.2.a
76 Five Criteria for Part L2A Compliance 2013 in England 1. Building Emission Rate Target Emission Rate (Regulation 26) 2. Limits on design flexibility 3. Limiting the effects of solar gains in summer 4. Quality of construction & commissioning (Regulation 43 & 44) 5. Providing information / O&M instructions (Regulation 40)
77 Notional Non-domestic Fabric Building Specification ADL2A 2013
78 Notional Non-domestic Air Permeability Building Specification ADL2A
79 Notional Non-domestic Systems Building Specification ADL2A 2013
80 isbem v5.2b for England
81 Limiting Fabric Parameters in ADL2A 2013
82 Limits on Design Flexibility Criterion 2 ADL2A - 2013
83 Limiting the Effects of Heat Gains in Summer
84 Looking Forward CIBSE TM36:2005, TM37:2006 &TM48:2009
85 Energy Meters in ADL2A 2013
86 Building Log Books CIBSE TM31 and BSRIA BG26/2011
87 BSRIA BG 26 / 2011 Building Manuals and User Guides
88 ADL2A Example 1: Air-conditioned Office Element Notional Building Improve Lighting Include PV Roof U-value (W/m 2.K) 0.18 0.18 0.25 Wall U-value (W/m 2.K) 0.26 0.26 0.35 Floor U-value (W/m 2.K) 0.22 0.22 0.25 Window U-value (W/m 2.K) 1.6 (10% FF) 1.8 (10% FF) 1.8 (10% FF) G-Value (%) 40% 55% 55% Lighting Efficacy (lm / cw) 60 65 60 PV Array (kw(p)) - - 30 TER (kgco 2 /m².yr) 24.28 24.28 24.28 BER (kgco 2 /m².yr) 24.28 24.27 24.28 Note: Gross internal area = 12,000m² All other values as per Notional building specification
89 ADL2A Example 2: Distribution Warehouse Element Notional Building Improve Air Permeability Include PV Roof U-value (W/m 2.K) 0.18 0.18 0.25 Wall U-value (W/m 2.K) 0.26 0.26 0.35 Floor U-value (W/m 2.K) 0.22 0.22 0.25 Air-permeability (m 3 /m 2 /hour) 5 3 7 Lighting Efficacy (lm / cw) 60 55 60 PV Array (kw(p)) - - 30 TER (kgco 2 /m².yr) 24.01 24.01 24.01 BER (kgco 2 /m².yr) 24.01 23.78 23.89 Note: Gross internal area = 5,000m² All other values as per Notional building specification
90 Non-domestic Building Services Compliance Guides 2013 Editions
91 Non-domestic Building Services Compliance Guide 2013 Edition
92 Gas, Oil and Biomass-fired Boilers Non-domesic BSCG 2013
93 Minimum Boiler Seasonal Efficiency
94 Minimum Controls Packages for New Boilers
95 Minimum Boiler Efficiency and Controls in Existing Buildings
96 Heat Pump Test Standards
97 Maximum Heat Losses from DHW Storage Vessels
98 Comfort Cooling in Non-domestic Compliance Guide 2013
99 Minimum Energy Efficiency Ration for Comfort Cooling
100 Non-domestic Compliance Guide for Air Distribution 2013
101 Specific Fan Powers in New and Existing Buildings 2013 & 2010 2010 2010
102 Minimum Control for Non-domestic Air Distribution Systems
103 Non-domestic Lighting
104 Lighting Controls in New and Existing Buildings
105 Lighting Energy Numerical Indicator (LENI)
106 Pipework and Ductwork Insulation Requirements
107 Maximum Heat Losses From Heating Pipes
108 Maximum Heat Gains For Cooled Water Supplies
109 Guidance on Water Pumps and Circulators
110 Existing Dwellings ADL1B No change in energy efficiency standards for works on existing dwellings Some modifications to the technical guidance as requested by industry to aid clarity, provide flexibility and align with current practice
111 Changes to ADL2B No change to the fabric standards for replacement or renovation Changes to Non-Domestic Building Services Compliance Guide
112 The ADL1B and ADL2B are now Complete New Table 3 in ADL2B - 2013 New Table 1 in ADL1B - 2013
113 DCLG s Part L 2013 Transitional Arrangements The introduction of the new Part L 2013 target is subject to the transitional provisions in Regulation 9. In brief, these mean: Where building work has commenced on site before 6 th April 2014 the provisions on target energy efficiency rates will not apply; and Where a building notice, full plans submission or initial notice has been given to a local authority before 6 th April 2014 the provisions on target fabric energy efficiency rates will not apply so long as work is commenced on site before 6 th April 2015.
114 Transitional Arrangements - Commencement of work In DCLG s opinion the commencement of work would usually be marked by work such as: Excavation for strip or trench foundations or for pad footings; Digging out and preparation of ground for raft foundations; Vibrofloatation (stone columns) piling, boring for piles or pile driving; Drainage work specific to the building(s) concerned.
115 Part L 2013 Transitional Arrangements DCLG considers that the following sorts of work would not be likely to constitute the commencement of work: Removal of vegetation, top soil or removal/treatment of contaminated soil; Demolition of any previous buildings on the site; Excavation of trial holes; Dynamic compaction; General site servicing works (e.g. roadways). In some cases applications will be for a number of buildings on a site, for example a number of houses. In such cases it is the commencement of work on the first of the buildings within the application which determines whether all the building work can take advantage of the transitional provisions, not each individual building.
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