Sustainability and Facades - cdn.ymaws.com AND FACADES 11 System Example – Revolving Doors Used...

Considerations

GORD Conference – Doha

Sustainability

and Facades

MAY 2015

Andy Dean

BSc (Hons), FCIOB, FSE

Head of Façade Engineering WSP | Parsons Brinkerhoff

AGENDA

SUSTAINABILITY AND FACADES

2

General considerations

Materials & systems

Façade access

Façade performance

Codes

Comfort and health

Learning

Objectives


3

Appreciation of façade considerations

Coordination

Materials and systems

Façade access importance

Façade performance characteristics

Codes

Why? – comfort and health

General

Considerations


4



Façade access

Environmental performance

Codes

Comfort and health


5

General Considerations

Sustainability, longevity and value

Why do we keep things?

- we love them

- they work

- their appearance – we’re proud of them

Consider the building lifecycle

The building envelope

- discipline interaction


6

Discipline Interaction

Security

Acoustics

Structures

Vertical transportation

Façade access

Architecture

Lighting

Fire, life and safety

Audio visual

Environmental and sustainability

Others…

Coordination


7

Selection Factors

Colour

Security

Privacy

Solar control

Building function

Fire safety

Weather

Weight

Breakage

Many more…

Materials


8



Façade access


Codes

Comfort and health


9

Selection Factors

Longevity

Performance

Quality

Future proof

Stability

SRI

BIPV

EXAMPLE – THE TORCH FIRE THIS YEAR

10

Material Selection Issue

Inappropriate material selection

Flame spread problem

Now we have a broken building

Existing building stock

- Needs quantification

- Needs prioritisation

- Needs a risk assessment for each building

- Needs penalties and enforcement

Source: Khaleej Times


11

System Example – Revolving Doors

Used since 1888, for stack effect in high rises

Used to stop air escaping

‘Always open, always closed’

Geometry ensures minimal air leakage

Also restricts sand, dirt and noise

Sliding doors allow air to escape every time they open, even when in a lobby arrangement


12

An independent study in 2006 by MIT in

the US found:

Use of the revolving door just once “will

save enough energy to light a 60W

lightbulb for 23 minutes”

“On average 8 times as much air is

exchanged when a swing door is opened

as opposed to a revolving door”

“If everyone used the revolving doors at

[one building on their campus] alone, MIT

would save almost $7500 [US] in natural

gas amounting to nearly 15 tons of CO2”


13

Important to ensure correct application

to suit:

user requirements and comfort

capacity / throughput

egress requirements – breakout?

design intent

diameters from 1.6m to 7m and beyond

give flexibility in design

2, 3 and 4 wing doorset configurations

allow for various segment sizes

Can integrate sliding when ventilation is

desired

Info courtesy of: Boon Edam

MATERIAL LIFE CYCLE

14

Gypsum boards – an example

MATERIAL LIFE CYCLE

15

Gypsum boards – an example


16

Gypsum vs blockwork

Flexibility of inserts and cutting

Local raw materials in the ME

Recyclable

More expensive?

65% lighter

75% lower logistics off site

65% lower logistics on site (forks & relocation)

More than 50% faster installation

Equivalent or better acoustics, noise, fire, wind resistance, etc.

Info courtesy of: Gyproc

Façade Access


17



Façade access


Codes

Comfort and health


18

Access Considerations

Cleaning

Related to materials - again

Cost of equipment – think long term

Roof space - Green roof?

Glass replacement

Safety

Early involvement

Avoid rope access

Environmental

Performance


19



Façade access


Codes

Comfort and health

U-VALUE, VLT, SHGC

20

U-value (transmittance (OHTC))

- λ (lamda) = thermal

conductivity or efficiency (W/mK)

- Resistance (m2K/W)

- 1/R = U-value (W/m2K)

Visible light transmission

- the proportion of light from the

visible spectrum passing through

the glass

- may or may not be combined

with the effect of fritting

Solar heat gain coefficient

= g value

- total solar energy transmittance

- SHGC = SC x 0.87 (approx)

SPECTRAL SELECTION GENERALLY

21

General glass types Low E types

Codes


22


Materials

Façade access


Codes

Comfort and health


23

Codes

GSAS

BREEAM

Estidama

LEED

Dubai Green Building Regulations


24

Codes and Standards

- considerations

Non-prescriptive environment

Codes vs test standards

Availability of testing facilities

Clarity and guidance

General equivalence

Codes and

Standards


25


Materials

Façade access


Codes

Comfort and health

COMFORT AND HEALTH

26

Considerations

Low comfort = stress = health issues - too much light - glare - closed curtains – no view - reduced productivity in schools and offices - patient recovery in hospitals - unhappy people

As well as light levels… - Acoustics – sleep and relaxation - Fresh air - Performance – environmental pollution - Many other factors – many people related

COMFORT AND HEALTH

27

Info courtesy of: Saint Gobain Glass

28

Thank you

Andy Dean

BSc (Hons), FCIOB, FSE

Head of Façade Engineering

WSP | Parsons Brinkerhoff

+971 50 654 1037

[email protected]

29

Copyright Materials

This presentation is protected by international

copyright laws. Reproduction, distribution, display

and use of the presentation without written

permission of the speaker is prohibited.

© WSP | Parsons Brinkerhoff

Middle East 2015

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