IES Faculty - WELL and MEP Implications

© Delos Living, LLC 2014

World Green Building Week / IES event

WELL and MEP Implications

28th September 2016

Julie Godefroy, Delos Solutions



WELL Overview and MEPH Implications

Air

Water

NourishmentLight

Fitness

Comfort

Mind WELL New and Existing BuildingsMay 2016

MEPH implications:

• 45 out of 102 features

• of which 23 of 41 pre-conditions for certification

• + acoustics, M&E contractor


MEPH Implications

AIR WATER

MINDCOMFORTFITNESS

LIGHT

Ventilation effectiveness

Filtration and purification

Mould and condensation control

Humidity levels

Materials e.g. VOCs from insulation, mercury in lighting

Extract at source e.g. printers

Monitoring

Water quality for health and safety as well as taste

Water treatment if required (e.g. sediment filters, carbon filters against organic contaminants, reverse osmosis against metals and inorganic pollutants)

Drinking points accessibility

Lighting for visual acuity (lux)

Lighting for alertness - circadian cycle principles (melanopic lux)

Daylight levels

Glare protection, sunlight exposure, shading (possibly automated)

Colour quality, surface reflectance

Thermal comfort

Individual comfort: temperature gradient, personal devices (e.g. fans)

Acoustic comfort – indoor and outdoor sources

Encouraging staircase use: lighting at min 215lux, music

Lighting as part of overall design and aesthetics strategy

Building user information

Stakeholder engagement

Post occupancy evaluation


Modelling – Ventilation


P#3 Ventilation effectiveness

Meet ASHRAE 62.1 2013 rates - mechanically or, if outdoor air quality allows, naturally

Do not exceed 800ppm CO2

Commissioning

O#15 Increased ventilation

Exceed ASHRAE rates by 30%

O#16 Humidity control

Relative humidity 30-50%

Rates typically less onerous than CIBSE and BCO, esp. at higher densities:CIBSE Guide A: 10l/s/p in offices BCO 2014: 12-15l/s/p at 1p/10m2

CO2: CIBSE Guides A & B: 800-1000ppm as common indicator

International equivalent: CEN EN 15251–2007 Annex B and CEN EN 13779–2007, excl. Section 7.3, 7.6, A.16, A.17.

BS EN 13779:2007 air quality classes: IDA4 "low": <6 l/s/p, 1550-1600ppmIDA3 "moderate": 6-10l/s/p, 1150-1200ppmIDA2 "medium": 10-15l/s/p, 850-900ppmIDA1 "high": >15l/s/p, 700-750ppm


Modelling – Thermal Comfort


Alternative Adherence Path: ISO 7730:2005 and/or CEN EN 15251:2007.

CIBSE Guide A and TM52:Heated and cooled buildings: Operative temperature and summer PMV (aiming for zero)Naturally ventilated / free running buildings: summer operative temperature based on adaptive model, with upper limit dependent on running mean of outdoor temperature

P#76 Thermal comfort

Mechanically ventilated spaces: ASHRAE 55-2013 5.3 Standard comfort zone compliance or

Naturally ventilated spaces: ASHRAE 55-2013 5.4 Adaptive comfort model

O#21 (air) Displacement ventilation

Computational Fluid Dynamics (CFD) to demonstrate ASHRAE 55-2013 compliance

O#83 Radiant thermal comfort

ASHRAE criteria met by radiant heating / cooling


Modelling – Lighting


Generally aligns with CIBSE and Society of Light and Lighting Impact of flexible / standing desks on lighting design?

Innovative Indirectly encourages daylight to avoid overly ”cold” artificial lighting – modelling is beneficial

No direct correlation, but strong CIBSE / SLL guidance on daylight integration (usually with daylight factors – min, average, uniformity ratio)

P#53 Lighting for visual acuity

Ambient lighting: Min 215lux

If <300lux: 300-500lux task lighting

P#54 Circadian lighting design

Light’s effect on non-visual photoreceptors, measured by Equivalent Melanopic Lux

Modelling incl daylight: min 250EML 4hrs/day, at 75% workstations, vertical pane, 1.2m height

OR Artificial lighting: EML equal to IES-ANSI RP-1-12 lux vertical targets

O#62 Daylight modelling

Min 55% space to receive min 300lux daylight for min 50% annual operating hours

Max 10% space to receive 1000lux direct sunlight for 250hours per year


Conflicts with Environmental Sustainability?


Filtering may impact ventilation efficiency… but the mandatory WELL requirements (MERV13/F7) broadly align with CIBSE guidance and should often already be included

Reverse osmosis plant, if installed... But except in the case of Nickel and Copper, this would address levels of metals exceeding UK and/or WHO guidance

Lighting loads may increase to meet the required melanopic lux levels, if little daylight and mostly “warm” lights

© Delos Living, LLC 2014© Delos Living, LLC 2014

HOWEVER,

FOCUS ON PERFORMANCE IN OPERATION …


WELL Features towards Soft Landings

PERFORMANCE VERIFICATION

Understand User Research, questioning

Develop BriefTo meet user requirements and future aspirations

Test BriefWith design team, users and suppliersDesign & Develop

SpecificationFor accurate

tendering

Construction and testing

Monitor, test and record

Post Occupancy analysis / Development / Optimisation

/ Gathering lessons learnt

USERS

1

2

34

5

6

#P85 Integrative

design

#P85 Integrative

design -stakeholder

charrette and development

plan

P#3 Ventilation Commissioning

#P85 Integrative design -

stakeholder charrette

P#86 Post-occupancy

surveys

P#14 Air infiltration

testing

#P85 Stakeholder orientation, P#84 WELL

building guide

RECERTIFICATION AFTER 3 YEARS

BEHAVIOR

DESIGNOPERATIONS

Maintenance and operations P#5 & P#23 Air filters,

P#6 mould

Monitoring and maintenance O#35 water testing, O#36

water filters/sanitizers, O#37 water dispenser, O#18 air

quality

© Delos Living, LLC 2014© Delos Living, LLC 2014

MAKE THE MOST OF IT!

Thank you

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