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Scottish Building Standards. Building Standards Division. - 2010 Changes -. Today - aims. Provide awareness of the ‘2010 changes’ Highlight the main issues Allow feedback from stakeholders. Today - format. 2009 changes – January/May Main theme – ‘2010 changes’ From 1 October 2010

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scottish building standards
Scottish Building Standards

Building Standards Division

- 2010 Changes -

slide2

Today - aims

  • Provide awareness of the ‘2010 changes’
  • Highlight the main issues
  • Allow feedback from stakeholders
slide3

Today - format

  • 2009 changes – January/May
  • Main theme – ‘2010 changes’
    • From 1 October 2010
  • Future developments
slide4

January 2009 changes

  • Energy performance certificates (EPCs) for existing buildings
    • Energy Performance of Buildings (Scotland) Regulations 2008
  • Schedules 1 and 3 – ‘hardstanding’ areas
  • Discount on warrant fee for intention to use a certifier of construction
slide5

May 2009 changes

  • Crown immunity removed
  • New schedule 3 types 2A-2C introduced
  • Specific Crown guidance produced
  • Updated ‘radon affected areas’ maps
  • Identified additional areas
slide6

2010 Changes

  • Building (Scotland) Amendment Regulations 2010
  • Technical Handbooks
  • Published early April 2010
    • BSD website/TSO hardcopy
  • In force 1 October 2010
slide7

2010 Changes - legislation

  • Schedule 3 ‘work not requiring a warrant’
  • Standards - 2.11; 2.12; 2.13; 2.15
  • Standards - 3.14; 3.15
  • Standards - 4.13
  • Standards - 5.1; 5.2
  • Standards - 6.1; 6.6; 6.10
  • Schedule 6 ‘conversions’
slide8

2010 Changes - guidance

  • Updated guidance in handbooks
  • Testing – noise/air-tightness
  • Certification references introduced
slide9

2010 Changes – to follow

  • Further guidance documents including
    • Alternative fire safety strategies
    • Conservatories guidance
    • Accredited construction details
  • Procedure regulations being reviewed for
    • 42 day rule
    • Extending warrant validity
scottish building standards10
Scottish Building Standards

Section 0 : General

Building Standards Division

slide11

Section 0

  • Reflects changes to building regulations
    • Schedule 3; Standards; Schedule 6
  • Defined terms (Appendix A)
    • ‘Traditional building’ - new
  • Updated to reference Eurocodes
section 5 noise
Section 5: Noise

Building Standards Division

today
Today
  • Background
  • New defined term - Traditional Building
  • Revised Standard 5.1
  • Design Performance Levels and Example Constructions
  • Post-completion Testing
  • New Standard 5.2 and Generic Internal Constructions
background
Background
  • First major review in over 20 years
  • Increase in noise complaints
  • Lifestyle changes
  • Change in construction practice
revised standard 5 1
Revised Standard 5.1

‘Every building, which is divided into more than one area of different occupation, must be designed and constructed in such a way to limit the transmission of source noise from normal domestic type activities, between such areas, to a level that will not threaten the health of, or cause inconvenience to the building occupants’

Applies to attached domestic and non-domestic buildings in different occupation

e.g. dwellings or residential buildings

and now includes roofs

traditional building
Traditional Building
  • Traditional building means a building or part of a building of a type constructed before or around 1919:
  • a) using construction techniques that were commonly in use before 1919; and
  • b) with permeable components, in such a way that promotes the dissipation of moisture from the building fabric
example constructions
Example Constructions

Developed from field test evidence

Separating Walls

- Dense block solid or Cavity walls

- Timber or Metal frame twin stud wall

Separating Floors

- In-situ concrete or Precast concrete slab

- Timber floor with solid joists or I-joists

timber floors comparison
Timber Floors Comparison

with solid joist

precast slab floors comparison
Precast Slab Floors Comparison

with isolated screed and BRC

post completion testing29
Post-completion Testing

Phased introduction of testing:

  • 1 May 2011 – flats / maisonettes and residential buildings
  • 1 October 2011 – houses and conversions
  • Testing carried out by persons with relevant recognised expertise in acoustics for sound insulation testing
doors and services
Doors and Services
  • Entrance doors in domestic only - provision of a perimeter seal to doors in separating walls
  • Services in common areas – plant, lifts, ventilation systems, drainage pipes
  • Design of building services - their position in the building in relation to rooms used for sleeping
standard 5 2
Standard 5.2

‘Every building, must be designed and constructed in such a way to limit the transmission of source noise from normal domestic type activities, through a wall or floor, between a room and internal space where noise is likely to occur, to a level that will not cause inconvenience to the building occupants’

Excludes hospitals, places of lawful detention, walls between en-suite bathrooms and the room it serves

guidance to 5 2
Guidance to 5.2

Internal insulation to walls and intermediate floors

- apartments in dwellings; and

- rooms in residential buildings used for sleeping

Level 43 dB Rw

Generic Internal Constructions

Internal doors in non-domestic buildings only

- seal and door density of 25kg/m2

summary of key changes
Summary of Key Changes
  • Standard 5.1 - now applicable to non-domestic
  • Increase in Design Performance Levels – New Build and Conversions, Conversions of Traditional Buildings
  • Example and Generic Internal Constructions
  • Post-completion Testing
  • Doors and Services
  • New Standard 5.2 – internal sound

insulation to rooms used for sleeping

section 6 energy building standards division
Section 6 : Energy

Building Standards Division

2010 Building Standards

section 6 energy 2010

Section 6 : Energy 2010

Topics:

2010 - Background and Headlines

Delivering Low Carbon Buildings - key changes to Handbooks

Information supporting revisions - methodologies, additional guidance

Summary

slide37

Section 6 - Background

  • New Section 6 - May ’07
  • The Sullivan Report - Dec ‘07
  • Recommendation of staged improvements to energy standards
  • Ministerial Announcement - Feb ‘09
  • Consultation - June ‘09
  • Climate Change (Scotland) Act - Aug ‘09
slide39

Summary of Key Changes

  • Methods retained, content of section and actions needed remain familiar
  • Review focused on target setting for new buildings, revised SAP & SBEM
  • Improvements to energy efficiency
  • Efficient services, effectively controlled, role of LCE
  • Improving existing buildings
slide40

… for New Buildings?

  • 30% reduction in emissions
  • Aggregate 30% for dwellings, flat 30% for non-domestic
  • Improvements in performance of fabric and services
  • Role of Low Carbon Equipment
  • Post-completion testing
slide41

…Alter, Extend and Convert?

  • Retain elemental approach
  • Improvements in performance of fabric and services
  • Flexibility for older buildings
  • NEW - improving performance of existing buildings – extensions to dwellings; improving services in non-domestic buildings
slide42

CO2 Targets - 6.1 Domestic

  • Amendments to fuel package table
  • Improvement sought will vary with dwelling type and fuel used
  • Improved fabric and infiltration
  • Additional parameters - thermal mass, thermal bypass
  • Low carbon element
slide43

CO2 Targets - 6.1 Non-domestic

  • 30% flat improvement
  • 2002 Notional building specification retained but ‘tweaked’
  • Moderation of Cnotional for cooling load
  • Carbon emission factors & choice of heating fuel – parity with 2007
  • Improvement factor - 30%
slide44

Shell - 6.1 Non-domestic

  • Calculating emissions performance under shell warrant
  • Avert problems arising under fit-out warrant
  • Facility provided within SBEM
  • Assess project early as may influence warrant procedure adopted
slide45

Insulation - 6.2 Fabric

  • Limiting energy demand – ‘fabric first’
  • Backstops improved by 10 to 15%
  • Reducing linear thermal bridging – new calculation
  • ‘Thermal bypass’ in cavity party walls
  • Alternative when extending
slide46

Infiltration - 6.2 Fabric

  • Extending post-completion testing
  • Sample testing of all buildings
  • Guidance on testing and on testers - develop further?
  • Phased introduction of testing from April 2011
  • New guidance on ventilation in Section 3 under Standard 3.14
slide47

Older Buildings - 6.2 Fabric

  • Improvement when converting - heated buildings
  • Guidance on traditional buildings
  • Alternative guidance –
  • review of Historic Scotland guide to conversions
slide48

Building Services - Overview

  • Standards 6.3 to 6.6
  • Issues developed and addressed on UK basis - referring to 2010 CLG Building Services Compliance Guides
  • Review and updating of minimum efficiencies and controls
  • Supporting improvement and delivery of the 30% target
slide49

Building Services - Key Changes

  • Domestic - guidance on performance of heat pumps and solar thermal systems; lighting efficiency; ventilation and cooling guidance expanded
  • Non-domestic - minimum lighting efficiency and controls; flags for improvement of existing buildings
slide50

Low Carbon Equipment

  • Recognising expanded role from 2010
  • Using where suitable and effective
  • Relation to other legislation, such as Scottish Planning Policy
  • Low Carbon Equipment guides - publication in progress
slide51

Operation / EPCs / Metering

  • Commissioning (6.7) - unchanged
  • User information (6.8) - scope extended
  • EPCs (6.9) - unchanged
  • Metering (6.10 ND) - scope extended to enable fuller metering strategy
slide52

Improving Existing Buildings

  • New for 2010
  • Recognition of the role building regulations can play – evidence elsewhere in UK
  • Triggered by building work
  • Relation to s.63 & 64 of the Climate Change (Scotland) Act 2009
slide53

Improving: Domestic Extensions

  • Focus on fabric performance
  • Simple assessment of existing dwelling – wall and roof U-values
  • Better fabric values cited where extending poorer performing dwellings
  • Encourages improvement of dwelling before extension
slide54

Improving: Non-dom Services

  • As with Climate Change work, focus is on building services
  • Why not fabric?
  • Considers systems covered by standards 6.3 to 6.6
  • A proportionate approach to improvement
  • Develop guidance & examples
slide55

Annexes - Other Changes

  • Revised guidance on modular and portable buildings (6.C ND)
  • Heating efficiency credits in existing buildings (6.F ND)
  • Improving existing buildings (6.G ND)
slide56

Calculation Methodologies

  • SAP 2009 - key changes for 2010
  • SBEM 2010 – recent developments and changes since 2007
  • NCM Modelling Guide for Scotland
  • Provide more information on SAP & SBEM on BSD web pages
  • Flag forthcoming developments
slide57

New Web-based Documents

  • Accredited Construction Details
  • Airtightness testing in Scotland
  • Implementing improvement to ND building services
  • Installation/commissioning of ventilation systems
  • Historic Scotland - Conversion of Traditional Buildings
slide58

Summary of Key Changes

  • S6 - familiar form and content
  • New buildings - target setting to deliver 30% CO2 improvement
  • All work - improved backstops for fabric and service efficiency
  • Role for Low Carbon Equipment
  • Improving existing buildings when carrying out work
scottish building standards60

Scottish Building Standards

Section 1 : Structure

Building Standards Division

key objective of review
Key objective of review

Introduction of Structural Eurocodes

Improve competitiveness

background62
Background

European Directives

25 years to develop

Co-existed with British Standards since 2007

Eurocodes will become the primary design codes

British Standards – an alternative approach

structural eurocodes 1
Structural Eurocodes - 1

BS EN 1990 – Basis of structural design

Design code + National Annexe

Non-Conflicting Complimentary Information

structural eurocodes 164
Structural Eurocodes - 1

BS EN 1990 Basis of structural design

BS EN 1991 Actions on structures

BS EN 1992 Design of concrete structures

BS EN 1993 Design of steel structures

BS EN 1994 Design of composite steel and concrete structures

structural eurocodes 2
Structural Eurocodes - 2

BS EN 1995 Design of timber structures

BS EN 1996 Design of masonry structures

BS EN 1997 Geotechnical design

BS EN 1998 Design of structures for earthquake resistance

BS EN 1999 Design of aluminium structures

bs en 1991 actions on structures
BS EN 1991 Actions on structures

BS EN 1991-1-1Densities, self weight and imposed loads

BS EN 1991-1-3 Snow loads

BS EN 1991-1-4 Wind loads

bs en 1997 geotechnical design
BS EN 1997 Geotechnical design

EC 7 Geotechnical design

BS EN 1997-1 General rules

BS EN 1997-2 Geotechnical investigation

bs en 1990 basis of structural design
BS EN 1990 Basis of structural design

6 assumptions in Clause 1.3:-

design competence

construction competence

supervision and quality control

construction materials and products

maintenance

use of structure

technical handbooks 1
Technical Handbooks - 1

No change to Standard 1.1 (structure)

Basis of structural design BS EN 1990

BSs replaced by Eurocodes

Alternative approaches

Jargon change e.g. loadings - actions

technical handbooks 2
Technical Handbooks - 2

Procurement

Certification

Fixings

New Annex 1A – list of Eurocode and corresponding BS

technical handbooks 3
Technical Handbooks - 3

Disproportionate Collapse

No change to Standard 1.2

BS EN 1991-1-7

Risk group 2B

small buildings structural guidance
Small Buildings Structural Guidance

Consultation question

Removed from Technical Handbooks

Research

- masonry

- timber

BS 8103-3 : 2009. Structural design of low-rise buildings. Code of practice for timber floors and roofs for housing

useful websites 1
Useful websites - 1

www.eurocodes.co.uk

www.istructe.org

www.ice.org.uk

www.scoss.org.uk

www.communities.gov.uk

www.bsigroup.com

useful websites 2
Useful websites - 2

www.trada.co.uk

www.concretecentre.com

www.steel-sci.org

www.brick.org.uk

www.masonry.org.uk

summary of key changes75
Summary of Key Changes

Eurocodes

Alternative approaches

Small buildings structural guidance

scottish building standards77

Scottish Building Standards

Section 3 : Environment

and

Section 4 : Safety

Building Standards Division

site preparation flooding
Site Preparation / Flooding
  • 3.1 - Additional guidance on contaminants
  • 3.3 - Improved guidance for flooding and groundwater
3 14 ventilation
3.14 Ventilation
  • Change to the wording of the standard
  • Guidance within 3.14.2 revised
  • Guidance within 3.14.10 revised
3 15 condensation
3.15 Condensation
  • Now applies to non-domestic buildings
  • Provision of supporting guidance to this standard
slide81

Standard 3.17 and 3.21

  • 3.17 - Biomass guidance introduced
  • 3.21 - Guidance provided on flueless gas appliances installation and ventilation
standard 4 13
Standard 4.13
  • Introduction of a new standard for ‘Security’
  • supporting guidance on improving the physical security of dwellings
  • Escape and Security
4 13 security design solutions
4.13 – SecurityDesign Solutions
  • Secured by Design
  • Using Doors and windows tested and certified by a notified body
  • Using Doors and windows manufactured to recognised product standards
standard 4 5 electrical safety
Standard 4.5 Electrical Safety
  • Professional expertise
  • Approved Certifiers of Construction for electrical installations
minor changes
Minor changes
  • British and European Standards
  • Other publications
  • Format and presentation
  • Cross referencing
  • www.scotland.gov.uk/bsd
summary of key changes86
Summary of Key Changes
  • Standard 3.1 new guidance - contaminants
  • Standard 3.3 guidance – flooding/groundwater
  • Standard 3.14 changes to standard - guidance on natural ventilation (trickle vents)
  • Standard 3.15 apply to non-domestic buildings
  • Standard 3:17 new guidance - biomass
  • Standard 3.21 new guidance - flueless gas appliances
summary of key changes87
Summary of Key Changes
  • Standard 4.13 - new standard

security - dwellings

  • Standard 4.5 - new guidance

professional expertise & certification

scottish building standards89

Scottish Building Standards

Section 2 : Fire

Building Standards Division

key objectives of review
Key Objectives of review

Improve life safety of people in and around buildings following the outbreak of fire

Improve assistance to the fire and rescue service

Further the achievement of sustainable development

2 0 introduction
2.0 Introduction

Background

Scope

Alternative

approaches

2 9 escape domestic
2.9 – Escape (Domestic)

No change to Standard

Complete re-write

- Escape within dwellings

- Escape routes

2 9 escape within dwellings
2.9 – Escape within dwellings

General principles

Options - table

- Basement storeys

- Escape windows

- Protected enclosures

- Alternative exits

- Open plan

houses and maisonettes

flats

slide94

Smoke detector

Sprinkler

2.9 – Open plan (Domestic)

Remove Protected

Enclosure

  • Sprinkler Protection, plus enhance fire detection and alarm system (LD1)
2 9 escape routes domestic
2.9 – Escape Routes (Domestic)

Escape routes

General principles

Options – table

- protected enclosures

- automatic life safety fire suppression

- ventilated protected lobbies

Diagrams – 10m single direction travel and 30m in two directions

2 9 escape routes domestic97
2.9 - Escape routes (Domestic)

Smoke ventilation (natural)

Smoke ventilation (mechanical)

- depressurisation systems

- pressurisation systems

Fire hazard rooms and services

Refuge within the building

2 9 escape domestic98
2.9 – Escape (Domestic)

Curle Street Fire Glasgow

2 9 escape domestic99
2.9 Escape (Domestic)

Fire broke into protected lobby

60 mins FR Sc Door in high rise flats

2 9 escape domestic100
2.9 Escape (Domestic)

Safe refuge within adjoining dwellings

2 9 escape non domestic
2.9 Escape (Non-Domestic)

Simultaneous and phased evacuation

Discount largest exit

Residential buildings

Locks

2 9 escape non domestic102
2.9 Escape (Non-Domestic)

Enhanced auto-detection and alarm systems as an alternative to protected lobbies in non-residential buildings

Galleries

Guide to safety at sports grounds

Measures to protect occupants using an escape route beyond final exit

2 9 escape non domestic103
2.9 Escape (Non-Domestic)

Temporary waiting spaces

Emergency voice communication system

Final exits

2 11 communication domestic
2.11 - Communication (Domestic)

Standard amended (limitation removed)

Smoke alarm – principal habitable room

Heat alarm – kitchen

Inner room

Choice of fire detector

Radio linked systems

slide105
Supporting guidance re-written

Risk assessment approach

2.11 Communication (Non-Domestic)

2 13 fire and rescue service water supply
2.13 Fire and rescue service water supply

Standard amended – limitation removed for domestic buildings

Water supply

- public

- private

Existing hydrant may be used

2 14 fire and rescue service facilities
2.14 Fire and rescue service facilities

Title of Standard amended to Fire ‘and rescue’ service facilities

Complete re-write

New table

Drawings

2 14 fire and rescue services facilities
2.14 Fire and rescue services facilities

Access level

Physiological effects on fire-fighters

45m from riser outlets in non-sprinklered buildings

Wet riser – 50m

2 15 automatic fire suppression systems
2.15 Automatic Fire Suppression Systems

Standard amended

- schools

2 heads actuation in dwellings

Water supply to domestic buildings

Suppression in tall buildings

minor changes 1
Minor changes - 1

High rise domestic buildings

BS 7273-4 – actuation for the release mechanism of doors

Fuel pipes

minor changes 2
Minor changes - 2

British and European Standards updated

Other publications

Tables and Drawings

Some text re-written to add clarity

Cross referencing

More detail - www.scotland.gov.uk/bsd

summary of key changes112
Summary of key changes

Open plan > 4.5m [D]

Water supply for FRS [D]

Phased evacuation [ND]

Automatic fire detection and alarm systems

Building Disaster Assessment Group

Suppression in schools [ND]

scottish building standards114
Scottish Building Standards

Future Developments

Building Standards Division

slide115

Future developments

  • Climate Change (Scotland) Act 2009
    • Existing non-domestic buildings
  • Sustainability
    • ‘New’ Section 7 for Technical Handbooks
    • Recognition of higher levels of design
slide116

Future developments

  • Europe
    • Recast of the Energy Performance of Buildings Directive (EPBD2)
    • Construction Products Regulations (CPR)
    • Promotion of the use of energy from renewable sources
slide117

Compliance

  • Government manifesto commitment to improve enforcement of building regulations
  • ‘Sullivan Report’ December 2007
  • Consultation carried out 2009
slide118

Compliance - consultation

  • Compliance gap and imbalance between design approvals and construction
  • More emphasis on construction
  • Guidance on reasonable inquiry
  • Roles, responsibilities not clearly defined
slide119

Verification

  • Appointments required from May 2011
  • Research - study brief
    • To evaluate the audit process so far
    • To research alternative verification models
  • Report published January 2010
slide120

Certification – new scheme

  • Certification of Construction (Drainage, Heating and Plumbing) Scheme
  • SNIPEF (Scottish and Northern Ireland Plumbing Federation)
  • Approved December 2009
  • Launched May 2010
slide121

Procedural Guidance on Certification

  • Published BSD website March 2010
  • Developed with liaison groups
  • Includes
    • Amendments – new certificate?
    • Level of information to be submitted with a warrant application
slide122

Procedural Guidance on Certification

  • Level of information with BW application
  • Annex A: structure
    • Houses (inc. timber frame)
    • Other buildings
  • Annex B: energy

Guidance available at - www.scotland.gov.uk/bsd

Go to - ‘certification’ section