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GreenBelt GreenField BrownField Self-Build (CPD) G#41025

GBE Green Building Encyclopaedia, CPD Continuing Professional Development GDL Grand Designs Live NEC 08/10/2023, discussion GreenBelt Green Field BrownField Land Self-Build A01 BRM BrianSpecMan 141023 S1 PNG Cover Slide

GreenBelt GreenField BrownField Self-Build (CPD) 

GBE > Encyclopaedia > Files > CPD > Topics > G#41025

GreenBelt GreenField BrownField Self-Build (CPD)
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GBE CPD Metadata

  • File Name:
  • File Type: PDF of PPTX
  • File Size:
    • PDF Handout: 0.167 mb
    • PDF Show: 0/307 mb
  • Number of Slides/Pages:
    • PDF Handout: 2 Pages
    • PDF Show: 17 Slides of 20
  • Created for: Self-builder Public
  • Presented to: Grand Designs Live 2023 NEC
  • Author: BrianSpecMan aka Brian Murphy ONC HNC Construction BSc Dip Architecture (Hons+Dist)
  • © GBE GBL GBC NGS ASWS 2023
  • Created: 07/10/2023
  • Revision: A01
  • Updated: 16/10/2023
  • Tags: Public presentation
  • ProductSets: Land, Greenbelt, Greenfield, Brownfield, Planning, Sites, Biodiversity Net Gain, BNG, Existing biodiversity, Existing Buildings, Methods of Retrofit, Materials,
  • UserGroups: Self-builders, Builders, Developers, Students, Architects, Assistants, Technicians, Structural Engineers, Constructors

GBE CPD Content

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

© GBE GBC GRC GBL NGS ASWS Brian Murphy aka BrianSpecMan **
14th October 2023 – 16th October 2023

GreenBelt GreenField BrownField Self-Build (CPD)

  • © 2023 Brian Murphy at Grand Designs Live
  • NEC Sunday 8th October 2023 14:00
  • Updated since live presentation

This Presentation on GBE:

  • Find this file on GBE websites at:
  • https://GreenBuildingEcyclopaedia.uk/?p=41025
  • Go there for:
  • the latest update
  • versions presented to different audiences
  • the whole presentation, all of the hidden slides
  • other file formats:
  • Handout, Show, PDF, PPTX
  • Links to related: GBE & GBC CPD & other content

Greenbelt

  • Urban outer limits:
  • Greenbelt to limit gradual expansion
  • Transport routes and nodes
  • Agricultural land and villages
  • Scattered brownfield sites
  • Urban lungs?

Urban lungs?

  • Potentially cleaning the atmosphere?
  • Urban heat Island effect may draw replacement air inwards as urban plume rises in summer
  • But urban canyons will push air above roof level
  • Pollution likely to stay at street level in winter

Greenfield Site

  • Previously undeveloped sites
  • Flood plain that should not be developed
  • despite government letter to planners and
  • Despite engineers who think they can
  • Agricultural land that may be full of chemistry
  • May need Bioremediation to clean up
  • Change of use to housing required ‘nutrient-neutrality’.
  • But Conservative Government decided to pollute the rivers again after voting for water companies to discharge sewage.
  • Organically farmed land free of chemistry
  • Development risks destroying or decanting any existing biodiversity, licenses permitting.

Brownfield Site

  • Previously developed site, might be:
  • Occupied building humans or nature
  • Building to reoccupy, retrofit, refurbish, extend, adapt, reuse
  • Derelict building being consumed by nature
  • Building materials resource bank
  • Deconstruct, reclaim and reuse
  • Demolition materials wasted and landfilled
  • Carbon burp or hiccup from wasted materials going to landfill and buying new to replace them

Self-build and brownfield

  • Aspire to find brownfield sites:
  • Will they be cheaper? I have no idea
  • Very much depends on what is on the site
  • Developers will try to avoid them, looking after profit margins
  • Aspire to reuse existing buildings:
  • That could save materials costs: Brexit Covid and Ukraine pushing prices ever higher
  • But retrofit is usually more expensive  £/m2
  • Try to reuse as much materials as possible
  • Landfill is expensive too:
  • £1600 value of average 8m3 skip of materials
  • Let alone labour filling skip, skip hire, gate fee and landfill tax

Existing buildings

  • You may need guidance on what to do with historic buildings:
  • Listed, Conservation areas and Ancient Monuments
  • Pre 1919 historic wall construction
  • Solid walls need special attention
  • Better choice of materials to be compatible
  • Breathing construction
  • Avoid plastics and cement
  • Using tree and biobased breathing materials

Self Build and Greenfield

  • Restrictions are down to the Planning officers
  • Probably no Conservation Officers
  • Environment Agency (but no teeth)
  • Avoid flood plains or use stilts or floats
  • Respect carbon campaigns
  • Build environmentally:
  • Healthy Environmental Resourceful Appropriate Competent Effective Yardstick Construction

Biodiversity Net Gain

  • Biodiversity (broad mix of nature supporting each other)
  • Biodiversity related to development sites
  • Gain: encourages more nature at end of project
  • Net Gain is a bit of greenwash
  • There must be more after development than before
  • But need to protect, maintain, reinforce existing biodiversity, not move it on
  • Planting saplings will not replace 40-year-old trees for another 40 years
  • Wrong bats or bird boxes for the species won’t help

What Biodiversity exists?

  • Understand what you already have
  • What enables it to be there?
  • What is important to its persistence?
  • Protect and do not destroy it
  • Add to and reinforce it
  •  but not to unbalance it

Existing Biodiversity

  • May be:
  • Flight paths/navigation routes:
  • tree lines hedge rows
  • Forrage-ing grounds, ponds and woodland
  • Food sources: nectar flower beds, trees, supported insects
  • Existing roosts or nests
  • Legally protected as an indicator species
  • £5000/bat fines or imprisonment
  • For disturbance interference and entrapment

Topsoil

  • Is a precious commodity
  • It has taken centuries to create
  • Its full of life: bacteria, insects, worms
  • Don’t scrape it and stockpile it too deep
  • 1m maximum (weight, water, air)
  • Keep it alive
  • Reuse it on the same site or sell excess

Turf and plants

  • Wild-turf especially
  • Plants: Dig out and pot up protect for reuse later
  • Use turf to cover topsoil stockpile
  • Supress weeds
  • Keep it alive
  • Relay it later on reused topsoil
  • Excess: sell on websites FreeCycle etc.

Trees

  • Indigenous species are very important
  • English Oak can support up to 380 different species and many instances of each
  • Lime trees support moth that support bats
  • Many others support many others

Don’t investigate yourself

  • Get a survey done by biodiversity experts, yes it will cost you
  • Don’t use lights or sticks to find out what is inside dark cavities
  • Determine quantities and which species
  • Then support them with all year round appropriate and effective provisions and accommodation

Feedback

  • These files are created by generalists with a big dollop of green flavour
  • These files are updated from time to time
  • We are not experts so from time to time these file may get out of date or may be wrong.
  • If you feel that we have got it wrong please let us know so we can put it right

© 2023 NGS GBE GBC GRC

Brian Murphy ONC HNC Construction, BSc Dip Architecture (Hons+Dist)

© GBE GBC GRC GBL NGS ASWS Brian Murphy aka BrianSpecMan **
16th October 2023

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GBE Green Building Encyclopaedia, CPD Continuing Professional Development GDL Grand Designs Live NEC 08/10/2023, discussion GreenBelt Green Field BrownField Land Self-Build A01 BRM BrianSpecMan 141023 S1 PNG Cover Slide

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© GBE GBC GRC GBL NGS ASWS Brian Murphy aka BrianSpecMan **
14th October 2023 – 16th October 2023

GreenBelt GreenField BrownField Self-Build (CPD)
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© GBE GBC GRC GBL NGS ASWS Brian Murphy aka BrianSpecMan **
14th October 2023 16th October 2023

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