7/31/2019 120529 Mhd Final-boards

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WIND| EVENTS SQUAREMelissa HarrisonPROJECT DESCRIPTION

The proposal for the Christchurch Events Square invents a new

typology for a contemporary convention centre, employing a

village-style approach with an assemblage of buildings rather 

than a single disproportionately large box structure. The new

central city plan identies a compact CBD to be bounded by

Licheld Street, Madras Street, Bealey Avenue and the Avon

River. It was deemed appropriate that a development, so criti-

cal to Christchurch’s economic recovery, be located within this

compact CBD. It also presented itself as an opportunity to re-

vitalise Cathedral Square which, even prior to the devastation

caused by the earthquakes, was lacking vibrancy and activ-

ity. The proposed assemblage of buildings within the square

relate and link with each other, acting as an adhesive to glue

the square back together as well as attract people back to the

centre. The ow of conventions and events within the square

will revive the pulse of the city.

 A rigorous analysis was undertaken of the existing convention

centre’s programmatic composition to unveil the short-comings

and reveal potential. In addressing the centre’s location withinthe square, additional programs have been incorporated, in-

cluding; a hotel, apartments, rentable retail space at ground

level and ofce spaces on upper levels.

The initial research undertaken to inform the design was an

in-depth study into wind, a reliable and renewable resource.

The design for the building was derived from investigations into

forms that augment wind ow, taking into account the 3 pre -

dominant wind ows in Christchurch; North-East, South-West

and North-West. The augmented air ow is utilised to naturally

ventilate the convention centre - a civic institution that charac-

teristically requires vast amounts of servicing for articial ven-

tilation.

DESIGN CONCEPT

DESIGN INVESTIGATION

RESEARCH

“Aworld- class convention centre in

the heart of the central city is critical

for Christchurch’s economic recov-

ery and will enable the city to regain

its strong position in the conventions

market.”

The proposal takes on a village-style

approach to the new Christchurch

Convention Centre. The buildings

will occupy the vacant sites within

Cathedral Square (located in the pro-

posed compact CBD).

The driving idea behind the concept

has grown out of an in depth study

of wind and its relationship with form.

The three predominant wind direc-

tions in Christchurch are the North-

East, South-West, and North-West

7,000m2

5,000m2

6,000m2

1,400m21,400m2

1,200m2

total site area = 23,000m2

PROPOSED SITE _ CATHEDRALSQUARE

PROPOSED PROGRAM _ GROUND LEVEL

PROGRAM DIAGRAM

scale1:5000

proposed massing _ to augment air owscale1:5000

Directionality

bidirectional

material investigation _ the effect of form on wind macro / singular 

scale1:5000scale1:5000

MASSING STUDY_WIND BEHAVIOUR / PATTERN

The catalogue of individual forms, from the material investigation, exhibits the wind responding in a swooping action after it travels around and o ver the forms. When the three predominant wind directions were

overlaid there is a strong s-shape pa ttern visible in the North-East to South-West axis. This behaviour of the wind has been applied to the forms to represent the uidity and take on the movement of wind.

n or th el ev at io n_ ma ss in g co nc ep t e as t e le va ti on _m as si ng co nc ep t

s ou th e le va ti on _m as si ng c on ce pt w es t e le va ti on _m as si ng co nc ep t

sq u a re ci r cu la r tr i a ng u la r o cta n go n a l r e cta n g u la r o va lconvex/

concaveeye

nor’westwind

south-westwind

north-eastwind

overlay

highwindspeedmoderatewindspeedlow windspeed

The cooler, denser air above

the water rushes to ll its

place causing the wind to

blow.

 Air above land mass heats

up more rapidly during the

day causing it to rise and

expand.

NIGHT WIND CYCLE DIAGRAM

During the night, air above land

looses heat more rapidly than

air above water, resulting in air 

from the land rushing to ll the

air over water.

DAYWIND CYCLE DIAGRAM

If the building is located with respect to predominant

wind directions, higher pressure air on the upwind side

will be forced to move through the building via openings.

Maximum performance occurs when inlets and outlets

are placed at a diagonal in both section and plan.

 Air drops most of its

moisture on the win-

ward slope due to de-

creasing atmospheric

pressure and increas-

ing altitude.

Different adiaba-

tic lapse rates of 

moist and dry air 

cause air on the

leeward slope to

become warmer.

                  U                P                 W                  I                 N

               D                 S                  L             O

                P                  E

D               O                 W                 N                 W                 I                  N                 D                S                 L               O                 P                  E                 

    U    P    W    I    N    D    S    I    D    E

    D    O    W    N    W    I    N    D

    S    I    D    E

higher air pressure

on the upwind side

lower air pressure on

the downwind side

wind over a mountain wind over a building cross ventilation diagram

When wind hits a building the air will speed up in order 

to ow around the building to the opposite side. This cre -

ates a positive pressure on the upwind side and a negative

pressure on the downwind side.

bidirectional

unidirectional

absence of vacuumwind over eye form 2wind over eye form 1

airfow intobuildingairfow overbuilding

wind section c-c

wind section b-b

wind section a-a

scale 1:5000 scale 1:5000cathedral square

pre-earthquate

cathedral square

buildings to be demolished

cathedral square wind ow

pre-earthquate

cathedral square wind ow

after demolition

north-west

south-west

north-east

unidirectional

bidirectional

PROPOSED SITE _ CATHEDRALSQUAREThe new convention centre calls for double the amount of hall space and a corresponding increase in breakout rooms. They

would like a dividable plenary that can hold 2500 people so that they are no longer reliant on the Christchurch Town Hall’s

plenary space. There is also a desire for an on-site banquet hall that can be used whilst the halls are set up for events. Con-

sideration is to be given to the possibility of incorporating a hotel within the new convention centre.

The incorporation of networking spaces, such as bars and cafes, are crucial to the convention centres success as they

would encourage delegates to stay on-site and would also act as an attractor of ow. Flat oor access is very important for 

the trade-halls so that exhibitions can be packed in and out easily and efciently. Consideration should be given to future-

proong and expansion

plenary space

cafes/bars

banquethall

breakoutrooms

tradehalls

n o r’ we s t w i n d

s o u t h -we s t wi n d

n o rt h -e a s t w i n d

o v e rl a y

s q u a re c i r c u la r t r i a ng u l a r o c t a ng o n a l r ec t a n gu l a r o v a lc o n v e x /

c o n c a v eeye

sq u a re ci r cu la r tr i a n gu la r o cta n g on a l r e cta n g u la r o va lconvex/

concaveeye

nor’westwind

south-westwind

north-eastwind

overlay

sq u a re ci r cu la r tr i a ng u la r o cta n go n a l r e cta n g u la r o va l

convex/

concaveeye

nor’westwind

south-westwind

north-eastwind

overlay

s q u ar e c i r c ul a r t r i an g ul a r o c t an g o na l r e c t a n gu l ar o v a lc o n v e x /

c o n c a v eeye

nor’west wind

south-west  wind

north-east wind

overlay

s q u a r e c i r c u la r t r i a ng u l a r o c t a ng o n a l r ec t a n g ul a r o v a lc o n v e x /

c o n c a v eeye

n o r’ we s t w i n d

s o u t h -we s t wi n d

n o rt h -e a s t w i n d

o v e rl a y

SECOND FLOOR PLANscale 1:1000

THIRD FLOOR PLANscale 1:1000

FOURTH FLOOR PLANscale 1:1000

FIFTH FLOOR PLANscale 1:1000

SIXTH FLOOR PLANscale 1:1000

GROUND FLOOR PLANscale 1:500

 Awind rose is a graphic tool used by

meteorologists to give a succinct view

of how wind speed and direction are

typically distributed at a particular lo-

cation.

Presented in a circular format, the

modern wind rose shows the frequen-

cy of winds blowing from particular di-

rections over a thirty year period.

The length of each “spoke” around the

circle is related to the frequency that

the wind blows from a particular di-

rection per unit time. Each concentric

circle represents a different frequency,

emanating from zero at the centre to

increasing frequencies at the outer cir-

cles.CHRISTCHURCH WIND ROSE

event’ssquare site

focusbuildings

mixed-use developmentdesign forum

GROUND FLOOR PROGRAM

scale 1:5000

FIRST FLOOR PROGRAM

scale 1:5000

THIRD FLOOR PROGRAM

scale 1:5000

FOURTH FLOOR PROGRAM

scale 1:5000

FIFTH FLOOR PROGRAM

scale 1:5000

SIXTH FLOOR PROGRAM

scale 1:5000

 As represented above in the Christchurch wind rose, the pre-dominant winds are the North- East,

South-West and North-West. These wind directions informed the orientaion of the massing within

the site. The catalogue of the effect of form on air ow highlighted the eye form as the optimal shape

for augmenting air ow. Hence these forms were distributed throughout the empty sites in Cathedral

Square and positioned according to the predominant wind directions. The augmented air ow would

be used for the purpose of natural ventilation.

The design was addressed with a similar framework to that

of the wind scales, at a macro / synoptic, Meso and Micro

scale.

Synoptic |snäptik|

Initially the entire Cathedral Square site was developed at

a synoptic scale and program was distributed accordingly.

Mesoscale |mezskāl; mē-|

Next, a selected area was developed at a Meso scale. The

buildings that were chosen were those located in the south-

west corner of Cathedral Square. These were selected be-

cause of their strong relationship with each other and with

the other buildings.

Micro-scale |mīkrō|

Finally the micro (reduced or restricted size) was developed.

This involved the development of the interior spaces, the

formation of a material palette and, in particular, the building

skin that has a certain scale-like quality with louvre system

that enables the panels to open and allows the building to

breathe.

COURSE 

THE UNIVERSITY OF AUCKLAND

ADVISORS

1st Semester 2012 Advanced Design 1

School of Architecture and Planning

Camia Young & Jordon Saunders

FUTURE CHRISTCHURCH V2

N E

SW

N

ES

W

Type:

Synoptic |snäptik|

adjective

1. of or forming a general summary or synopsis

Synoptic scale winds are measured at a large, general scale. These general or over all con-

ditions have a direct relationship with mesoscale phenomena, providing conditions that either 

enhance or suppress them. This affect is exerted through wind speed and cloud cover which

can affect the solar gain of the ground and building mass.

Mesoscale |mezskāl; mē-|

noun chiey Meteorology

an intermediate scale, esp. that between the scales of weather systems and of microcli-

mates, on which storms and other phenomena occur.

Meso scale winds are measured at an

intermediate stage between micro and synoptic scale wind systems. This scale is where the

conict occurs which creates storms and unstable wind patterns. Mesoscale wind systems

transfer heat and moisture to the overlaying synoptic wind system.

Micro-scale |mīkrō|

combining form

1 small : microcar.

reduced or restricted size

Micro scale winds are local scale and relate to regional and city areas.

EAST ELEVATIONscale 1:5000

GROUPSITE PLAN

SECTION A-Ascale 1:100

STRUCTURALSKIN

east elevationsteel frame

scale 1:500

INDEPENDENT FLOOR STRUCTURE

east elevation

scale 1:500

INTERNALCOLUMNS

east elevation

scale 1:500

BUILDING SKIN DETAILscale 1:500