George Adams - PowerPoint Presentation

Slide1

George Adams

Immediate Past President CIBSEChampion CIC Green Panel

CIBSE

TM53: 2013

Mike Goodwin

Chair, TM53 Project Steering Group

Principal author

Associate Professor Mark

Jentsch

(Bauhaus-

Universität

Weimar, formerly of University of Southampton)

TM53 Project Steering Group members

Mike Goodwin (Dunwoody LLP) (chair)

George Adams (SPIE Matthew Hall)

Prof. Phil

Banfill

(Heriot Watt University)

Richard Davies (Jacobs, formerly of NG Bailey)

Steve

Goymer

(Turner & Townsend

plc

)

Gary

Hird

(John Lewis Partnership)

Dr Patrick James (University of Southampton)

Associate Prof. Mark

Jentsch

(Bauhaus-

Universität

Weimar, formerly of University of Southampton)

Barry Knight (Emerson Climate Technologies)

Bob Player (John Lewis Partnership)

Steve Wilson

Bill Wright (Wright Energy and Environment Ltd.)Slide2

scope

Contents1 Introduction 12 Context 32.1 Regulatory framework 3

2.2 Green economy 42.3 Fuel security 62.4 Fuel price 63 Building design considerations 73.1 Pre-refurbishment surveys 73.2 Construction 83.3 Refurbishment challenges 143.4 Refurbishment brief development 204 Building services 204.1 Mechanical services 234.2 Electrical services 53

4.3 Public health 644.4 Building controls 674.5 Data and communications 704.6 Lifts 724.7 Economics of building services refurbishment 755 Commissioning and handover 78

5.1 Commissioning strategy 78

5.2 Seasonal commissioning 80

5.3 Handover strategy 80

5.4 Post occupancy evaluation 81

References 81

Index 87Slide3

The scope and extent of refurbishment works within

a building may be dictated by the type of occupant (owner occupier, tenant, sub-tenant), the structure of the occupant’s departments, the modernisation requirements of the business, or a change in occupier.

This results in a wide range of possible refurbishment works in various configurations.Therefore, a systems based approach has been followed

within this publication in order to cover the refurbishment particularities of different building components and services and to provide advice for phased refurbishment projects.

scopeSlide4

Building refurbishment can be required for:

commercial reasons:to increase floor area

to expand the businessto increase incometo attract a new occupierto retain an existing occupierto improve marketabilityto reduce running coststo meet corporate social responsibility

PurposeSlide5

Building refurbishment can be required for:

operational reasons:

1 due to a change of use (e.g. office to hotel, retail to leisure, hotel to residential etc.)2 due

to a change of owner/tenant3 due to increased demands (e.g. mechanical, electrical, data etc.)

P

urposeSlide6

Building refurbishment can be required for

: Technical reasonsHealth and Safety Reasons

Legislative reasonsEnergy reasonsEnvironmental reasons

PurposeSlide7

Figure 1.1

Flow chart of pathways showing how to navigate the information given in this publicationSlide8

Figure 1.1

Flow chart of pathways showing how to navigate the information given in this publicationSlide9

Figure 1.1

Flow chart of pathways showing how to navigate the information given in this publicationSlide10

Figure 1.1

Flow chart of pathways showing how to navigate the information given in this publicationSlide11

Box

2.1

List of the most relevant acts of parliament, regulations, standards and directives for building refurbishment projectsSlide12

Figure 2.3

Timeline of extant and proposed policy measures at the time of writing of this document that are likely, either directly or indirectly,

to impact on refurbishment projectsSlide13

Figure 2.2

Graphical representation of the requirements of the Building Regulations England and Wales for refurbishment of non-domestic

buildingsSlide14

Figure 2.4

Annual UK net import/export of primary fuels since 1970 as

percentage of the primary fuel consumption in that year, based onmillion tons of oil equivalent data (data sources: historic data: Digest ofUK energy statistics (DECC, 2012a); projections 2015 and 2020: Updatedenergy and carbon emissions projections (BERR, 2008))Slide15

Quantifying the embodied carbon and environmental

impact of building materials from extraction to demolitionis far more complex The environmental impact of construction materials can be assessed by using tools such as the Green Guide to Specification (BRE, 2011) orBSRIA guide BG 10/2011 (Hammond and Jones, 2011).

In refurbishment projects, the environmental impact of the alternative solution of demolishing and rebuilding the building should also be considered when conducting such an assessmentSlide16

Building design considerations:

Understanding the underlying design of a building to be refurbished is important in determining an appropriate refurbishment strategy as this helps to avoid performance failures post refurbishment. Therefore, prior to scheduling any refurbishment

works the following questions should be considered:? What factors led to the original building design? when the building was first constructed? How was the building originally intended to be operated and how is it operated at present

? What refurbishment works have been conducted to date? How have previous refurbishments impacted on the building’s design and its energy and

comfort performanceSlide17

Figure 3.1

Heat leak paths in the façade of an early 1960s office

building with prefabricated wall panels as demonstrated by an early morning thermography survey during the heating season, highlighting thermal bridges (Point A) and air leakage (Point B)Slide18

Figure 3.2

Basic structural systems used in public and commercial buildings:

(a) load bearing masonry, (b) reinforced concrete structural frame with curtain wall facade, (c) steel structural frame with non-structural claddingSlide19

Table 3.1

Thermal insulation measures, timeline and typical applications (1950–2010)Slide20

Figure 4.16

Refurbishment

options for sanitary accommodation in a building that has not received any major upgrades for many yearsSlide21

Table 4.12 lists common general lighting schemes with

a timeline

.Type of lighting

PerformanceSlide22

Figure 4.12

Change

of floor types over time in relation to the electrical servicesSlide23

Figure 3.9

Aspects influencing the human feeling of comfort (

adapted from Pistohl (2009))Slide24

Figure 4.1 Building services

integration in a refurbishment project: chilled beam system, (b) chilled ceiling system, (c) fan coil unit and

(d) fan tile system John Smith-Test, websupport@cibse.org, 1:45pm 04/10/2013, 1, 99999Licensed copySlide25

Figure 4.19

Schematic

representation of the data and communications systems brought together on a single infrastructure

Figure 4.18

Schematic

representation

of the data

and communications

systems that

may be present in an

existing buildingSlide26

Figure 4.21

Typical

refurbishment cycle periods for building services systemsSlide27

Table 4.14

Benchmark

costs for refurbishment of building services systems in relation to new-build on a scale of 1 (significantly cheaper) to 5 (significantly more expensive) with ‘3’ representing a new-build project

Guidance on application

Guidance on cost benchmarkingSlide28

Guidance on application

Guidance on cost benchmarking

Table 4.15

Typical

risk factors for refurbishment projects with the risk

factorSlide29

CIBSE

Commissioning Code A: Air distributionsystems (CIBSE, 2004b) CIBSE Commissioning Code B: Boilers (CIBSE,

2002a)CIBSE Commissioning Code C: Automatic controls(CIBSE, 2001)CIBSE Commissioning Code L

: Lighting (CIBSE,2003b)CIBSE

Commissioning Code M:

Commissioning

management

(CIBSE, 2003c)

CIBSE

Commissioning Code R

:

Refrigeration systems

(CIBSE, 2002b)

CIBSE

Commissioning Code W

:

Water distribution

systems

(CIBSE, 2010c)

CIBSE

TM44:

Inspection of air conditioning systems

(CIBSE, 2012b)

BSRIA

Commissioning

Guides

BSRIA BG 29/2011:

Pre-commission cleaning

of pipework

systems

(Brown and

Parsloe

, 2012).

Commissioning

works

should comply with the following:Slide30

Section

Content5.1.2

Commissioning of natural ventilation systems5.1.3Commissioning of energy meters5.1.4

Commissioning of renewable energy systems5.2

Seasonal commissioning

5.3

Handover strategy

5.4

Post occupancy evaluation

Commissioning

works

should comply with the following:Slide31

IndexNote

: page numbers in italics refer tofigures; page numbers in bold refer to tables.abbreviations viiiabsorption

chillers 52–53accent lighting 60, 62accessibility see disabled access; maintenance accessair cooled packaged chillers 47, 49, 50Slide32

Post occupancy evaluation

(POE) is an important tool for assessing building performance from the user perspective after building handover and usually includes questionnaire surveys and interviews (Hastings et al., 2007). These

qualitative assessments may however be complemented byquantitative environmental monitoring as a control measure. POE represents an approach to ‘extended after care’ where buildings are periodically reviewed and the building services fine-tuned accordingly. Besides highlighting successes and failures across building services

systems, surveys and interviews with building occupants may alsoreveal deficiencies in building layout and/or management that require action for mitigation.

5.4

Post

occupancy

evaluation (POE)Slide33

Proposed line of trees

In order to increase shading on the ground floor, we propose to plant a line

of trees a short distance from the building. This will give a high level of shading from low angle sun. The

trees must be Evergreen as they will be requiredmost in the winter months and therefore must be dense at this point.

T

hinking beyond