GBE CPD Metadata

• File Name: GBC CPD TGR TT A09 101021 S70 PDF (Show In Dropbox to view)
• File Type: PDF of PPTX
• File Size: PDF Show: 7 mb
• Number of Slides/Pages: PDF Show: 70 Slides of 88
• Created for: TGR Twilight Talk
• Presented to: Zoom 100 audience TGR Twilight Talk
• Author: BrianSpecMan aka Brian Murphy ONC HNC Construction BSc Dip Architecture (Hons+Dist)
• © GBE GBL GBC NGS ASWS 2021
• Created: 04/10/2021
• Revision: A02 (A09 of Larger GBC CPD PPTX)
• Updated: 31/05/2026
• Tags: CPD, Lecture, Green Building Calculator, Design & Decision Tool,
• ProductSets: Methods of Construction, Materials, Building Elements,
• UserGroups: Students, Architects, Assistants, Technicians, Structural Engineers, Constructors

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GBE CPD Content

(without images; See the slide show for the pictures)

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Green Building Calculator Vs Carbon Terminator?

• Step by step guide to calculating and costing the embodied and in use carbon load of your building
• TGR Twilight Talk 5-6:30pm 11 Oct 2021

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Welcome and Thank you

• So many of you: 100 No. capacity booked and a few more in reserve 113 total
  • From UK
  • From EU (so sorry, we might be back, if you will have us)
  • From International
• GBC Version 1 users
• GBC Version 2 preview
  • Some curious
  • Some challengers perhaps
  • Some prospects I hope
• And many familiar faces, lovely to see you all again

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Green Building Calculator

• © NGS GBE GBC 2011-2021
• BrianSpecMan Murphy GBC Number-Cruncher
• Version 2 launch 1st March @ FutureBuild 2022 Digital Arena Stand L68

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This Presentation on GBE:

• Find this file on GBE website at:
• https://greenbuildingencyclopaedia.uk/?p=40045
  • PDF Show: TGR Twilight Talk
  • Also find:
  • Full version of GBC CPD PDF (353 slides)
  • Links to all GBC related pages
  • Links to GBC website
  • https://GreenBuildingCalculator.uk

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Programme

• x minute Polls scattered throughout
• 10 minutes intro to GBC V2 %%%
• 25 minutes tour of GBC V2 %%%
• 5 minutes demonstration of GBC V2 %%%
• 2 minutes case study in use
• 45 minutes Q&A including polls

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Poll 1 State of the Industry`
Where do the construction industries problems lie?

• Education & Training
• Legislation & Interpretation
• Clients & Briefing
• Quantity Surveyors & Cost Planning
• Procurement
• Manufacturers, Suppliers & Product data & test evidence
• Brexit (temporary or long term?)
• COVID (temporary or persistent)
• BREEAM & other EAM
• Environment & Biodiversity Crisis & Declarations
• Meeting RIBA Carbon Challenge
• All or many of the above

Poll 2: Who is out there?
What professions are in the audience?

• Clients, Client Bodies, Self-builders, Facilities managers, Property managers
• Architects and other design professionals including: Technicians, Surveyors, Engineers
• Quantity Surveyors, Cost Planners, Estimators, Buyers
• BREEAM etc. assessors, carbon counters, environmental advisors
• Manufacturers, Makers, Fabricators, Suppliers, Agents, Retailers,
• Constructors, Tradesmen, Artisans, Installers, Applicators, Sub-contractors, Contractors
• Project managers
• Others

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Green Building Calculator

• I want.. I want.. I want..

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I am coming at this problem:

• As a(n):
• Technician and Architect by training
• Specification Writer by choice (£2400m track record)
• Side Line spectator with frustration
• Observer of projects going wrong:
  • Briefing battens dropped at each interchange
  • Because of cost plans and procurement
  • Lack of joined up management of it all
  • Loss of scrutiny of competency of anything

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I don’t want: A building Performance Gap

• • Started by philosophical, aesthetics and snappy-graphics education
  • Little or no technical, physics, science, numeracy, environmental education
  • Increasingly challenging Legislation Regulation interpretation and Administration
  • Discouraged and shrinking supervision role
  • Evolves into vulnerable technical design
  • Undermined by surreptitious substitution
  • Brought on by inadequate tender
  • Manipulated by Dutch bargaining
  • Lubricated by power over supply chain manipulation
  • Facilitated by out of control & bespoke procurement methods
  • Muddied by misaligned perceptions
  • Encouraged by Constructing Excellence 10% year on year improvement
  • Compounded by 2013 Industrial strategy -33% cost, -50% emissions, -50% time
  • Cost cutting in disguise as “value engineering”
  • Driven by inadequately specific, incompetent cost planning
  • All leading to: incapacity of construction sector to deliver:
  • Client’s:
    • bespoke design, green brief, investment ambitions & competent building

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I want clients

• with aspirations and objectives for a Healthy, Environmental, Useful building:
  • To know they can engage a building designer team who have the tools and skills to meet their brief
  • To be able to invest well and get what they want;
• not be driven down the ‘business as usual’ cost cutting route initiated by QSs bad cost plans and procurement that adds a fee to reduce quality
  • To know that their aspirations & objectives will survive all the way to completion on site

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I want building designers to be able to:

• Do their own Cost Planning on small jobs, not needing a QS
  • based on the real cost of doing it greener and better for client
  • not just cheapest-wins every time
  • Don’t set yourselves up or a fall
  • without a QS
• Who steers the project towards financial and performance gaps
• Avoiding approximate elemental pricing rates
• Avoiding non-representative labour rates
• Avoiding incompetent violet price books
• Immediately understand the environmental impact
  • of their construction or refurbishment methods
  • Help make better informed choices of materials or products
  • Become carbon literate

I want building designers to be able to:

• Compare alternative scenarios easily, quickly
  • to begin to build an understanding of the consequences of their choices
  • in time be able to intuitively choose lower impact materials and methods
• Intelligently interrogate the bill of materials
  • do environmental analysis on the fly.
• Access comprehensive generic materials and product datasets at their fingertips
  • adopt, apply and interrogate designs

I want building designers to be able to:

• Know where a product was invented to be used
  • not risk its inappropriate application
  • ‘Post-Grenfell function’ Version 3
• Close the performance gap:
  • Energy Version 2,
  • Airtightness, V later
  • Fire, acoustics, indoor air quality, etc. V later
  • Services design, lighting design, V later
• Have access to competent elemental assembly datasets
  • 892 already for Version 3
  • For use in the absence of know-how to assemble their own.
  • Choose from and adopt or adapt competently

I want building designers to be able to:

• Have a low cost tool affordable by small practices
• Have a multi-functional tool that interrogates the same building model/dataset
  • That only has to be built once, to get many results
  • Unlike WRAP and BRE tools
• Submit to architectural competitions and awards
  • that insist on embodied energy, embodied carbon and sequestered carbon and energy and carbon in use,
  • as part of the criteria for success
  • with an appropriate weighting I hope.

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I want Non-BIM’ers

• Who have no need for BIM
• Who cannot afford to implement BIM
• Not doing Government work, not needing BIM
• Have not experienced the benefits of BIM
• To be able to do BIM-app-type analysis outside of BIM
• Interrogate the data and get useful results
• In the future:
• Enable seamless BIM adoption later
• Two way flow of information between BIM and GBC and visa versa

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I want Quantity Surveyors to:

• Become a useful part of procurement process
  • Cost planning has to do better than it has done over last few decades
  • Pricing books are woefully inadequate
• (do not reflect what is going on out there)
• Tradesmen rates are wrong as far as we can tell
  • Elemental rates are limited in scope
  • Accurate Cost planning appears to be impossible
  • Don’t propose D&B etc. if the client wants bespoke, quality and good Investment
• Be Quality Surveyors not Quantity Surveys
  • Why give the client a Violet cost plan for a green brief for a green building?
  • Why give them false expectations? And then fail from then onwards?
  • Be more accurate than +/- 10% measuring and worse estimating
• Create the ‘Green Building Price Book’
  • Alistair McConnochie proposed 20 years ago
  • to become a reality, inside GBC
• Do Green, competent Cost Planning
  • not win the ‘race to the violet bottom’
• Do real Value Engineering of green stuff into the project, not out of it
  • not cost-cutting disguised as Value Engineering;
  • but will they look at the bigger picture?
• Do Whole Life Value without charging an extra fee
  • TOTEX = CAPEX + OPEX

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I want procurement to:

• Focus on the client expectations
  • No more novated designers without whistleblowing clauses
• Not focus on low cost and fast delivery
• At the expense of performance & quality
  • Craft supervisors not QA box tickers
  • Not sub-contracted snagging
• Not create long supply chain barriers between designers and craftsmen
• Manage interfaces between packages
  • Deliver consistency of end results for whole building
  • Easy to maintain by client’s FM
• Go back to General Contracting if that’s enough

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I want manufacturers to:

• Make multi-functional materials, products and systems:
  • But avoiding composites and mixing natural with technical materials
  • To replace many singular function alternatives
  • That succeed in Value Engineering processes
• Because they are difficult to substitute
• Make low impact materials and products
  • Not hide behind BRE GGtS Generic Materials Assessments
• at industry sector level: aggregated average grey not green or violet
• Make their independently verified credible data available
  • as ‘big open data’ in ‘consistent formats’
  • Readily interrogated by calculators with intelligent search functions
• Populate GBC Product Data Collection tables to create a single robust source and allow integration into GBC & bespoke Calculators
  • Or share NBS Source datasets
• In BIM provide:
  • High Levels of Information (LOI)
  • Before High Levels of Detail (LOD)
  • Enable High Levels of Accuracy (LOA)

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I want tenderers

• To be able to use the built-in calculator
  • as the Bill of Quantities Tender Document
• To not have to price the job with every intention of making claims
  • Because retention moneys will never be paid without a fight
  • Dutch bargaining discounts will be expected
  • Main-Contractor levy or discounts will be expected
  • Payments will be late: 3 months is normal today
  • Especially on Guaranteed Maximum Price GMP domestic tenders
• To be able to price the job properly:
  • not chasing some false illusion cost plan,
  • to allow trades people to have the time to care
  • and do a competent job using proper materials
  • Accurate and complete tender documents can invite accurate pricing

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I want Specification Substitution to be done:

• Transparently with all the facts and figures available
• about the consequence of every change,
• other than just cost savings for the contractor or shared with the client

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I am reminded to
Be the change you want to see in the world

• Mahatma Gandhi

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Green Building Calculator Website

• https://GreenBuildingCalculator.uk

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V2 Component Parts

• Product Information Providers
• Product Data Collection
• Excel mechanisms
• Data Sources
• Data inputs
• Generic Materials Datasets
• Choosing targets & Data sources
• Option Switches for more detail
• Choosing
• Price Information
• Chosen Elements
• Choosing Components
• Choosing Materials or Products
• Number Crunching
• Checking Targets Met
• GBC Users
• Dashboard
• Summary Sheets
• Purpose of Green Building Calculator

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V3 – V33 Component Parts

• Product Information Providers
• Product Data Collection
• Elemental & Sub-elemental Assemblies
• Specifications
• Prices
• Scope of Work
• Other Disciplines
• Choosing targets & Data sources
• Impacts
• LCA & design Life
• Interiors
• Waste
• Plastics
• Circular Economy
• Self Build
• Biodiversity
• Preliminaries
• MEP Services
• Regional International Variations
• Bespoke Modules

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Green Building Calculator Case study:

• International Timber Competition
• 28th May 2020

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Design Review and Carbon Data

• Architectural Competition Entry
  • Metsa Timber Technology Competition 2020 Entry
• exStudent Samael Coco LSBU Post Graduate Architecture EREID Module
• Entry requires carbon data
  • Samael needed help
  • Called on GBC to provide it

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GBC evolved out of calculators

• 2 of GBC’s component parts were developed during EREID course
  • Energy and Resource Efficiency in Design
  • Whole Building Energy & Carbon in use
  • Whole Building Embodied Energy and Carbon & Sequestered Carbon
  • The part time students took the calculators back to their offices
  • And used them on live projects

Proposal

• Replacement of 1960’s tower block load-bearing precast concrete facade
• Load-bearing solid wood panel
• Kerto LVL Laminated Veneer Lumber
• Jigsaw inter-connecting edges
• Connected to an interlocking solid timber super-structure

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Collaborate

• GBC carried out a critique of the proposal to help in its development and refinement
• Samael prepared drawings and a report and investigated alternative insulation materials
• Samael Coco presentation Rising From Aches Rev2 PDF %%%

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GBC prepared and provided:

• U value calculations with each insulation option
• In use Energy & Carbon comparisons:
  • Building Regulations AD L
  • AECB Carbon lite,
  • Passivhaus
  • LETI U values
• Embodied Energy, Embodied Carbon and Sequestered carbon
• before and after calculations

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Elemental U values comparisons

Elemental Embodied Energy, Embodied Carbon and Sequestered Carbon

Int. Timber Competition Entry

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Green Building Calculator Q&A

• A few Polls first

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Poll 3: Your wants?

What do you want in a MS Excel based Design & Decision Tool focused around carbon counting?

• Blue sky thinking: no holes barred, no pebbles unturned
• Write down as many as possible
• Short phrases initials or acronyms if possible?
• And ranking of most popular

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Poll 4: Scope of Costs
What would be useful to you soonest?

• Bill of Materials > Bill of Quantities
• Green Building Price Book within GBC
• Cost Planning function:
  • Record recent tender rates into look up table
  • Record Sub-contract quotes into cost plan
  • Build Cost
  • Prelims profits overheads and Fees
• Tendering
• In use fuel Cost
• Cost pay back
• Carbon pay back
• Value Engineering (Not cost cutting)

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Poll 5: Scope of Calculations
What would be useful to you?

• Areas, Volumes, Quantities & Weight calculations
• Form factor calculation
• Insulation thickness per U value calculations
• Analysis at levels:
  • Component
  • Element
  • Building
• U value Calculator
• Condensation check: Version 3 or 4
• Decrement Delay Overheating check: Version 2 or 3

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Green Building Calculator
GBE V2 In Detail

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V2 Singular/Multiple Switches

• Was on every page
• Now on it own page

V2 Schedule of Accommodation

V2 Roofs Parts

• Future: Other Roof Geometry

V2 Room By Room Heat Losses

V2 Form Factor

V2 Scope: Building Elements

• U value Envelop Elements
• Non-U value Envelop Elements

V2 Building Element Areas

• Outside of Uv Envelope Building Elements
• Foundations
• Structural Frames
• Secondary Elements
• N Furniture Fixtures Equipment (FFE)
• Landscape
• Domestic MEP Services

V5 Non-Domestic MEP Services

V4 Bespoke Project Specific Items

V2 Singular/Multiple Switches

V2 Engage Singular/Multiple

V2 U values Etc. Targets

• Regulations, Public Consultations, Design Standards, Campaigns

Materials > k values > U values > Thicknesses

V2 Decrement Delay

• Insulation Thickness
• (In Development)

V2 39 No. Elements

• U or R value
• 12 secondary element U/R values
• Refurb Actions

V2-V3 Condensation Check

V2-V3 Decrement Delay Overheating Avoidance

V2 Bill of Materials Quantities Labour Accessories Products Costs

V2 Elemental Costing

V2 EE EC & SC

ICE 3.0 database carbon reporting options

EN 15978

EN 15804

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V2-V3 LCA EPD

• Each row is a component of an element (3 to 20 components make up an element)
  • (framing insulation lining)
• Each group of components makes an element (up to 39 make up a building)
  • (partition, wall, floor, roof)
• Each column is an EN 15804 stage A-D or subdivision column
• Each group of columns is an environmental impact (7 groups 7 impacts 1 is carbon=)

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V1 Resistances V2 no change

V2 Conductivities

V1 Properties of Products

V2 Secondary Elements Windows & Glazing options

For U Value Calculations

V1 U value > Watts > CO2 In Use

V2 Carbon Mains Electricity EU

V2 UK Fuel Carbon Factors 2020

V2 Fuel Costs Dataset

V2 In-use Energy Carbon Costs

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Green Building Calculator Demonstration

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Green Building Calculator Q&A

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Poll 6: Scope of Work
What would be most useful to you soonest?

• New Build,
• Retrofit,
• Domestic,
• Non-domestic
• All of the above

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Poll 7: Scope of Parts
What would be most useful to you soonest?

• Building
• Structure
• Interiors
• Services
• Landscape
• Infrastructure
• All of the above

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Poll 8: Scope of Analysis
What would be most useful to you soonest?

• In use Energy
• In use Carbon
• Embodied Energy
• Embodied Carbon
• Sequestered Carbon
• Life Cycle Assessment

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Poll 9: Performance Targets:
What would be most useful to you soonest?

• Building Regulations AD L, (E, W, S, NI)
• Design Standards: AECB, PHI, LETI,
• Campaigns: ACAN, Superhomes,
• Challenges: RIBA
• Client Standards: TfL,
• Planning Standards: WAG TAN6
• Other national Regs or design standards

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Poll 10: Scope of datasets:
What would be most useful to you soonest?

• Materials & properties
• Insulation materials & properties
• Products, Accessories & properties
• Materials & Product Costs
• Fuel & costs
• ICE 3 Embodied Carbon
• LCA & EPD datasets

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Poll 11: Scope: Future Versions
What would be most useful to you soonest?

• Selection from 33 versions planned:
• Post-Grenfell competency
• Links to GBE websites:
  • Low carbon materials guidance
  • Self build guidance
  • Waste reduction in design guidance
• Plastic avoidance, plastic %, recycled plastics
• Recycled content,
• Circular economy:
  • Dismantle-ability, reclaim-ability, reuse-ability,
• Waste awareness:
  • Waste calculator,
  • Waste cost calculator
  • Embodied energy and carbon in Waste