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TROPICAL URBANISM TROPICAL URBANISM A DESIGN APPROACH TECHNICAL REPORT MOUNT PETER STRUCTURE PLAN FEBRUARY 2010

TROPICAL URBANISM A DESIGN APPROACH TECHNICAL … · Mount Peter • Design Approach Introduction The Mount Peter Design Manual describes and illustrates the impact of tropical wet-dry

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Page 1: TROPICAL URBANISM A DESIGN APPROACH TECHNICAL … · Mount Peter • Design Approach Introduction The Mount Peter Design Manual describes and illustrates the impact of tropical wet-dry

TROPICAL URBANISM

TRO

PIC

AL

UR

BA

NIS

M

A D

ES

IGN

AP

PR

OA

CH

TEC

HN

ICA

L R

EP

OR

T

M

OU

NT

PE

TER

STR

UC

TUR

E P

LAN

FEB

RU

AR

Y 2

010

Page 2: TROPICAL URBANISM A DESIGN APPROACH TECHNICAL … · Mount Peter • Design Approach Introduction The Mount Peter Design Manual describes and illustrates the impact of tropical wet-dry

This

Tec

hnic

al b

ackg

roun

d re

port

info

rms

the

Mou

nt P

eter

Stru

ctur

e P

lan.

S

peci

fical

ly, t

his

repo

rt is

in s

uppo

rt of

, and

in re

spon

se to

, ele

men

ts o

f ite

m 3

.4

(Hou

sing

Stra

tegy

) &ite

m 3

.12

(Vis

ual C

hara

cter

Stra

tegy

) of S

ectio

n 4.

1 (O

utpu

ts)

of th

e M

ount

Pet

er M

aste

r Pla

nnin

g S

peci

ficat

ion.

DIP

DIS

CLA

IMER

Dra

ft fo

r dis

cuss

ion

purp

oses

. Thi

s do

cum

ent i

s no

t end

orse

d by

the

Dep

artm

ent o

f In

frast

ruct

ure

and

Pla

nnin

g ac

ting

as th

e C

oord

inat

ing

Age

ncy

for t

he M

ount

Pet

er

Mas

ter P

lann

ed A

rea.

It c

onta

ins

info

rmat

ion

that

is n

ot S

tate

Gov

ernm

ent p

olic

y.

Doc

umen

t Con

trol

Vers

ion

Dat

e A

utho

r R

evie

wer

Nam

e In

itial

s N

ame

Initi

als

Ver 1

12

/05/

09

DP

Z D

B

MPM

PG

A

S

Ver 2

06

/08/

09

DP

Z D

B

MPM

PG

A

S

Page 3: TROPICAL URBANISM A DESIGN APPROACH TECHNICAL … · Mount Peter • Design Approach Introduction The Mount Peter Design Manual describes and illustrates the impact of tropical wet-dry

Team

Mem

bers

:

Dem

etri B

ache

s

Seth

Har

ry

Patri

ck Z

imm

erm

an

Isaa

c Sm

ith

Jessi

ca C

hapa

rro

Ruth

Lan

dsm

an

Cove

r © s

alva

x239

Tabl

e of

Con

tent

s ©

sco

tt ph

otos

All C

limat

e Ch

arts

© A

ustra

lian

Gove

rnm

ent -

Bur

eau

of M

eteo

rolo

gyA DE

SIGN

APP

ROAC

HCA

IRNS

, QUE

ENSL

AND,

AUS

TRAL

IA

TROP

ICAL

URB

ANIS

M

MO

UN

T P

ETER

This

doc

umen

t w

as p

rodu

ced

by:

DP

Z Pa

cifi

c, i

n as

soci

atio

n w

ith

Set

h H

arry

and

Ass

ocia

tes,

Inc

.

Page 4: TROPICAL URBANISM A DESIGN APPROACH TECHNICAL … · Mount Peter • Design Approach Introduction The Mount Peter Design Manual describes and illustrates the impact of tropical wet-dry

Mou

nt P

eter

• D

esig

n Ap

proa

ch

TA

BL

E O

F C

ON

TE

NT

SIn

trod

uctio

n 4

Urba

n De

sign

Prin

cipl

es

5Th

e Bl

ock,

the

Stre

et, a

nd th

e Bu

ildin

g 7

Clim

ate

8Gl

obal

Clim

ate

Cont

ext

8Lo

cal C

limat

e Co

ntex

t 9

Desi

gn P

rinci

ples

13

Gene

ral S

trate

gies

13

Spec

ific

Tech

niqu

es

13Ur

ban

Tech

niqu

es

14Bu

ildin

g Te

chni

ques

24

Case

Stu

dies

33

Urba

n Pa

ttern

s 33

Urba

n Co

mpo

nent

s 38

Repr

esen

tativ

e Ph

otos

46

Appl

icat

ion

52

Conc

lusi

on

54

Next

Ste

ps

55

Bibl

iogr

aphy

58

Page 5: TROPICAL URBANISM A DESIGN APPROACH TECHNICAL … · Mount Peter • Design Approach Introduction The Mount Peter Design Manual describes and illustrates the impact of tropical wet-dry

Mou

nt P

eter

• D

esig

n Ap

proa

ch

Intr

oduc

tion

The

Mou

nt P

eter

Des

ign

Man

ual d

escr

ibes

and

illu

stra

tes

the

impa

ct o

f tro

pica

l wet

-dry

cl

imat

es o

n ur

ban

desi

gn a

nd b

uild

ing

tradi

tions

, and

doc

umen

ts p

rope

r pla

nnin

g an

d de

sign

re

spon

ses

to s

uch

cond

ition

s.

The

clim

atic

con

ditio

ns o

f a re

gion

use

d to

sha

pe a

nd in

form

the

urba

n co

ntex

t of

that

regi

on.

How

ever

, with

the

adve

nt o

f mec

hani

cal c

oolin

g, c

onte

mpo

rary

pl

anni

ng a

nd a

rchi

tect

ure

have

, for

the

mos

t par

t, ig

nore

d cl

imat

e an

d de

sign

ed w

ith li

ttle

conc

ern

for s

usta

inab

le e

nviro

nmen

tal p

ract

ice.

With

a

bette

r und

erst

andi

ng o

f his

toric

al b

uild

ing

tradi

tions

, con

tem

pora

ry

plan

ning

and

arc

hite

ctur

e ca

n re

spon

d to

clim

atic

con

side

ratio

ns b

y 1-

app

lyin

g hi

gh p

erfo

rman

ce te

chno

logi

cal a

dvan

ces

to a

rchi

tect

ure

and

infra

stru

ctur

e w

hich

real

ize ta

ngib

le c

ost s

avin

gs fo

r fis

cal a

nd

envi

ronm

enta

l bot

tom

line

s, a

nd 2

-intro

duci

ng tr

aditi

onal

pas

sive

and

lig

ht im

prin

t urb

an d

esig

n te

chni

ques

to in

crea

se a

bsol

ute

hum

an

and

envi

ronm

enta

l com

mun

ity s

usta

inab

ility.

The

Man

ual p

rom

otes

low

impa

ct, h

igh

qual

ity o

f life

co

mm

uniti

es a

nd a

rchi

tect

ure.

Whi

le e

ach

desi

gn te

chni

que

is

anal

ysed

sep

arat

ely,

the

prin

cipl

es a

nd te

chni

ques

dis

cuss

ed

here

in w

ork

cum

ulat

ivel

y to

fully

ach

ieve

com

fort

able

and

ro

bust

hum

an h

abita

ts.

Deci

sion

s m

ade

at e

ach

scal

e af

fect

all

othe

r sca

les,

from

the

mas

ter p

lan

dow

n to

bui

ldin

g co

mpo

nent

s.

Thou

ghtfu

l des

ign

at a

mac

ro s

cale

can

hav

e m

ajor

impa

cts

on

the

qual

ity o

f a b

uild

ing

at a

mic

ro s

cale

. W

here

app

licab

le, g

loba

l pr

eced

ents

are

use

d to

est

ablis

h an

d de

fine

arch

etyp

es.

Thes

e ar

e bo

th il

lust

rate

d an

d de

scrib

ed w

ith n

arra

tive

to s

et o

ut th

e st

rate

gic

urba

n an

d ar

chite

ctur

al d

esig

n re

spon

ses

to lo

cal c

limat

e co

nditi

ons.

Page 6: TROPICAL URBANISM A DESIGN APPROACH TECHNICAL … · Mount Peter • Design Approach Introduction The Mount Peter Design Manual describes and illustrates the impact of tropical wet-dry

Mou

nt P

eter

• D

esig

n Ap

proa

ch 55555

Urb

an D

esig

n P

rin

cipl

esTr

aditi

onal

urb

anis

m re

pres

ents

an

outw

ardl

y si

mpl

e, y

et h

ighl

y ev

olve

d sy

stem

for h

uman

ha

bita

tion

that

enc

ompa

sses

all

of th

e ne

cess

ary

ingr

edie

nts

for d

aily

livi

ng in

a c

ompa

ct,

effic

ient

, and

robu

st fo

rm, w

hich

is o

ften

aest

hetic

ally

ple

asin

g. A

s su

ch, c

omm

unity

-bu

ildin

g re

pres

ents

the

larg

est a

nd m

ost c

ompl

ex, a

s w

ell a

s th

e m

ost s

ucce

ssfu

l, to

ol e

ver

devi

sed

by m

anki

nd fo

r max

imis

ing

the

valu

e an

d ef

ficie

nt u

se o

f hum

an re

sour

ces,

whi

le a

lso

enha

ncin

g th

e he

alth

, wel

l bei

ng, a

nd p

rodu

ctiv

ity o

f civ

ilizat

ion

as a

who

le.

And

yet i

t is

not a

si

ngle

, mon

olith

ic c

onst

ruct

, but

rath

er, a

sys

tem

of p

arts

that

evo

lved

to w

ork

colle

ctiv

ely

in

deliv

erin

g th

e be

nefit

s de

scrib

ed a

bove

.

Urba

nism

is c

ompo

sed

of fo

ur m

ajor

par

ts: T

he R

egio

n, w

hich

repr

esen

ts th

e la

rger

con

text

in

whi

ch th

e M

etro

polis

, the

City

, and

the

Tow

n re

side

; The

Nei

ghbo

urho

od, t

he D

istri

ct, a

nd th

e Co

rrid

or w

hich

, tak

en to

geth

er, c

onst

itute

the

fund

amen

tal b

uild

ing

bloc

ks o

f the

com

mun

ity

type

s lis

ted

abov

e; a

nd th

e Bl

ock,

the

Stre

et, a

nd th

e Bu

ildin

g, th

e es

sent

ial e

lem

ents

mak

ing

up a

nei

ghbo

urho

od, a

nd w

hich

, col

lect

ivel

y m

ake

up th

e st

reet

and

blo

ck n

etw

ork

whi

ch

defin

es c

ompa

ct, w

alka

ble

urba

nism

. Ea

ch is

a n

eces

sary

and

inte

gral

par

t of t

he s

yste

m,

mut

ually

and

sym

path

etic

ally

evo

lved

to o

ptim

ise

the

colle

ctiv

e va

lue

of th

e w

hole

.

Urba

n fo

rm, a

s ex

pres

sed

thro

ugh

thes

e co

mm

unity

type

s, te

nds

to re

flect

regi

onal

ly-d

eriv

ed

influ

ence

s an

d tra

ditio

ns, o

f whi

ch c

limat

ic c

onsi

dera

tions

are

an

impo

rtan

t par

t. A

t the

Ne

ighb

ourh

ood,

and

Stre

et/B

lock

Net

wor

k le

vel,

the

prin

cipa

l for

m-g

ener

atin

g fa

ctor

rem

ains

a

spat

ial o

ne, b

ased

upo

n th

e di

stan

ce a

n av

erag

e hu

man

can

com

fort

ably

wal

k in

five

min

utes

, or

app

roxi

mat

ely

400

met

res.

As

a re

sult,

mos

t urb

an c

odes

focu

s pr

edom

inat

ely

on th

at

defin

ing

spat

ial m

etric

, ver

sus

anyt

hing

ove

rtly

link

ed to

clim

atic

con

side

ratio

ns.

How

ever

, it

shou

ld b

e no

ted,

and

this

doc

umen

t is

pred

icat

ed o

n th

e pr

emis

e, th

at th

ere

is n

othi

ng

intri

nsic

ally

uni

que

abou

t com

mun

ities

des

igne

d on

the

basi

s of

the

hum

an d

imen

sion

, tha

t is

at o

dds

with

des

igni

ng w

ith th

e go

al o

f hum

an p

hysi

olog

ical

com

fort

in m

ind.

The

two

are

not

mut

ually

exc

lusi

ve.

c Bo

B:M

iam

i

c Ja

mes

Will

amor

Page 7: TROPICAL URBANISM A DESIGN APPROACH TECHNICAL … · Mount Peter • Design Approach Introduction The Mount Peter Design Manual describes and illustrates the impact of tropical wet-dry

Mou

nt P

eter

• D

esig

n Ap

proa

ch 66

Ther

e ar

e a

num

ber o

f rec

ogni

sed

sour

ces

outli

ning

the

basi

c ur

ban

desi

gn p

rinci

ples

of w

alka

ble,

su

stai

nabl

e co

mm

uniti

es, t

hose

pla

ces

defin

ed b

y a

spat

ial a

dher

ence

to th

e pa

ram

eter

s of

the

five-

min

ute

wal

k, re

gard

less

of c

limat

e. T

hey

can

be s

umm

aris

ed a

s fo

llow

s:

The

neig

hbou

rhoo

d is

the

fund

amen

tal b

uild

ing

bloc

k of

urb

an c

omm

unity

type

s.Th

e ne

ighb

ourh

ood

has

a di

scer

nabl

e ce

ntre

, usu

ally

a p

ublic

squ

are

or g

reen

, whi

ch is

spa

tially

ar

ticul

ated

by

arch

itect

ure

whi

ch c

an in

clud

e ci

vic

build

ings

, com

mer

cial

use

s, a

nd re

side

nces

, an

d ca

n be

con

nect

ed b

y tr

ansi

t to

othe

r nei

ghbo

urho

ods

near

by.

The

neig

hbou

rhoo

d is

of f

inite

dim

ensi

on a

nd h

as a

dis

cern

able

edg

e, w

here

one

nei

ghbo

rhoo

d st

ops

and

anot

her b

egin

s, o

r whe

re a

sha

red

amen

ity re

side

s, a

nd/o

r the

rura

l lan

dsca

pe b

egin

s.A

neig

hbou

rhoo

d is

des

igne

d w

ith a

net

wor

k of

ped

estr

ian-

frie

ndly

str

eets

, with

on-

stre

et p

arki

ng,

toen

cour

age

wal

king

, red

uce

vehi

cula

r use

, and

enc

oura

ge a

nd s

uppo

rt a

var

iety

of t

rans

port

atio

n m

odes

.A

neig

hbou

rhoo

d co

ntai

ns a

var

iety

of h

ousi

ng ty

pes,

abl

e to

acc

omm

odat

e di

vers

e ag

es, l

ifest

yles

, an

d in

com

es, s

tren

gthe

ning

the

pers

onal

and

civ

ic b

onds

of c

omm

unity

.A

neig

hbou

rhoo

d sh

ould

hav

e sh

ops

and

offic

es e

ither

nea

r its

cen

ter,

or a

long

prin

cipa

l str

eets

an

d av

enue

s, s

uch

that

the

daily

nee

ds o

f a ty

pica

l hou

seho

ld c

an b

e ea

sily

and

con

veni

ently

met

. Bu

ildin

g de

nsiti

es s

houl

d be

allo

cate

d w

ith c

onsi

dera

tion

to fa

cilit

atin

g w

alka

ble

acce

ss to

ser

vice

s an

d tr

ansi

t.A

neig

hbou

rhoo

d sh

ould

rese

rve

spec

ial s

ites

for C

ivic

Bui

ldin

gs, a

nd n

eigh

bour

hood

sch

ools

sh

ould

be

situ

ated

suc

h as

to a

llow

chi

ldre

n to

wal

k or

bic

ycle

to th

emA

rang

e of

par

ks, g

reen

s, p

layg

roun

ds a

nd o

pen

spac

e sh

ould

be

appr

opria

tely

dis

trib

uted

w

ithin

the

neig

hbou

rhoo

ds, a

nd c

onse

rvat

ion

area

s an

d op

en la

nds

shou

ld b

e us

ed to

def

ine

and

artic

ulat

e di

ffere

nt n

eigh

bour

hood

s an

d di

stric

ts.

Arch

itect

ure

and

land

scap

e de

sign

sho

uld

emer

ge fr

om lo

cal c

limat

e, to

pogr

aphy

, his

tory

, and

bu

ildin

g pr

actic

es o

f the

regi

on.

• • • • • • • • • •

5 m

in. w

alk

All o

f the

abo

ve a

ttrib

utes

and

cha

ract

eris

tics

cert

ainl

y pr

omot

e a

com

fort

able

wal

king

env

ironm

ent,

rega

rdle

ss o

f loc

al c

limat

ic c

ondi

tions

, but

do

not s

peci

fical

ly

addr

ess

the

issu

e of

cod

ing

urba

nism

for h

ot, h

umid

clim

ates

. Th

e au

thor

s ar

e no

t aw

are

of a

ny e

xist

ing

code

s, w

hich

, in

fact

, exp

licitl

y do

. Ho

wev

er, t

here

are

op

en-s

ourc

e fo

rm-b

ased

cod

es th

at a

re c

urre

ntly

bei

ng d

evel

oped

that

will

have

the

abilit

y to

add

ress

thes

e is

sues

in m

ore

conc

rete

term

s

Page 8: TROPICAL URBANISM A DESIGN APPROACH TECHNICAL … · Mount Peter • Design Approach Introduction The Mount Peter Design Manual describes and illustrates the impact of tropical wet-dry

Mou

nt P

eter

• D

esig

n Ap

proa

ch 77

The

Bloc

k, th

e St

reet

, and

the

Build

ing

The

smal

lest

incr

emen

t of s

cale

at w

hich

the

prin

cipl

es o

f com

pact

, wal

kabl

e ur

bani

sm a

pply

are

the

leve

l of t

he B

lock

, the

Stre

et, a

nd th

e Bu

ildin

g. A

t thi

s le

vel u

rban

des

ign

prin

cipl

es a

re w

hole

ly c

onsi

sten

t with

the

know

n te

chni

ques

of

desi

gnin

g fo

r tro

pica

l clim

ates

, in

that

they

pro

mot

e le

ss re

lianc

e on

the

auto

mob

ile,

and

on th

e us

e of

foss

il fu

els

in g

ener

al, b

y cr

eatin

g a

com

pact

and

attr

activ

e w

alki

ng e

nviro

nmen

t, w

ithin

a la

rger

com

mun

ity a

nd re

gion

al fr

amew

ork

that

fa

cilit

ates

the

use

of tr

ansi

t with

in a

mor

e ra

tiona

l lan

d-us

e pa

ttern

that

mak

es th

e m

ost o

f loc

atio

n ef

ficie

ncie

s (m

ovem

ent e

cono

mie

s).

In a

dditi

on to

thes

e m

ore

univ

ersa

lly a

pplic

able

prin

cipl

es, m

any

othe

r fac

tors

be

com

e cr

itica

l in

amel

iora

ting

the

net a

ffect

s of

hot

, hum

id c

limat

es o

n hu

man

co

mfo

rt a

nd p

rodu

ctiv

ity, i

nclu

ding

the

disp

ositi

on o

f the

bui

ldin

g w

ithin

the

bloc

k, th

e sp

ecifi

c na

ture

of t

he p

edes

trian

env

ironm

ent i

n te

rms

of s

hade

and

air

mov

emen

t, th

e or

ient

atio

n of

the

stre

et a

nd b

lock

net

wor

k re

lativ

e to

pre

vailin

g w

inds

and

sol

ar a

ngle

s, e

tc.,

as w

ell a

s ho

w a

ll of

thes

e el

emen

ts in

tera

ct w

ith e

ach

othe

r. A

form

-bas

ed c

ode,

info

rmed

by

thes

e co

nsid

erat

ions

, and

inco

rpor

ated

in

to a

larg

er re

gion

al p

lann

ing

fram

ewor

k, c

ould

pro

vide

a m

ore

com

preh

ensi

ve

mec

hani

sm fo

r ens

urin

g a

thou

ghtfu

l and

effe

ctiv

e ap

proa

ch to

clim

ate-

sens

itive

pl

anni

ng a

nd d

esig

n.

The

stra

tegi

es a

nd te

chni

ques

out

lined

in th

is d

ocum

ent s

peak

dire

ctly

to th

ese

idea

s an

d co

ncer

ns fr

om a

pra

ctic

al p

oint

of v

iew

, bas

ed u

pon

the

reco

gnis

ed

natu

ral l

aws,

and

info

rmed

thro

ugh

the

empi

rical

ana

lysi

s of

exi

stin

g pl

aces

. By

com

parin

g th

ese

case

stu

dies

with

one

ano

ther

, eac

h re

spon

ding

to s

imila

r cl

imat

ic c

ondi

tions

, but

filte

red

thro

ugh

the

lens

es o

f the

ir re

spec

tive

cultu

res

and

build

ing

tradi

tions

, it i

s ho

ped

that

new

insi

ghts

mig

ht b

e ga

ined

with

rega

rd to

our

kn

owle

dge

and

unde

rsta

ndin

g of

the

bene

fits

of u

rban

ism

. An

d th

at th

ese

new

in

sigh

ts m

ight

con

tinue

driv

e th

e on

goin

g ev

olut

ion

of o

ur c

ities

, tow

ns a

nd v

illage

s,

as w

e fin

d ne

w a

pplic

atio

ns fo

r the

se ti

me-

test

ed c

once

pts

and

idea

s.c

gior

gos_

kess

c du

luoz

cat

s

Page 9: TROPICAL URBANISM A DESIGN APPROACH TECHNICAL … · Mount Peter • Design Approach Introduction The Mount Peter Design Manual describes and illustrates the impact of tropical wet-dry

Mou

nt P

eter

• D

esig

n Ap

proa

ch 888888

Cli

mat

eGl

obal

Clim

ate

Cont

ext

Cairn

s is

loca

ted

in th

e tro

pica

l wet

and

dry

, or

tropi

cal s

avan

nah,

clim

ate,

whi

ch c

an b

e fo

und

thro

ugho

ut th

e w

orld

bet

wee

n th

e Tr

opic

of

Canc

er a

nd th

e Tr

opic

of C

apric

orn.

The

map

at

left

illust

rate

s th

e ot

her r

egio

ns th

roug

hout

the

wor

ld th

at h

ave

the

sam

e cl

imat

e as

Cai

rns,

and

w

hich

can

be

used

to d

raw

pre

cede

nts

from

for

desi

gn te

chni

ques

that

will

also

wor

k in

Cai

rns.

Li

ke m

ost t

ropi

cal s

avan

nah

clim

ates

, Cai

rns

is

loca

ted

betw

een

the

Inte

rtro

pica

l Con

verg

ence

Zo

ne a

nd th

e su

btro

pica

l hig

h. T

he c

onve

rgen

ce

of th

ese

two

clim

atic

sys

tem

s is

wha

t cre

ates

th

e w

et a

nd d

ry s

easo

ns in

the

tropi

cal s

avan

nah

clim

ates

. Th

e In

tert

ropi

cal C

onve

rgen

ce Z

one

is a

bel

t of c

onve

rgin

g tra

de w

inds

and

risi

ng

air w

hich

pro

duce

s hi

gh c

loud

ines

s, fr

eque

nt

thun

ders

torm

s, a

nd h

eavy

rain

fall

near

the

Equa

tor.

Furt

her s

outh

, bet

wee

n 20

° and

40°

latit

ude,

the

subt

ropi

cal h

igh

is a

regi

on o

f hig

h at

mos

pher

ic

pres

sure

with

a p

rono

unce

d te

mpe

ratu

re

inve

rsio

n, in

whi

ch w

arm

air

sits

on

top

of c

old

air,

that

cre

ates

a re

lativ

ely

arid

env

ironm

ent.

Bec

ause

of

its

loca

tion

at 1

6° la

titud

e, b

etw

een

thes

e tw

o sy

stem

s, C

airn

s, a

nd o

ther

trop

ical

sav

anna

h re

gion

s, h

ave

dist

inct

wet

and

dry

sea

sons

with

hi

gh te

mpe

ratu

res

year

roun

d.

Palm

Bea

ch a

nd th

e Ke

ys, F

lorid

a,

Unite

d St

ates

Cuba

The

Baha

mas

Haiti

Yuca

tan

Peni

nsul

a, M

exic

oVe

nezu

ela

Part

s of

Bra

zil

Guin

eaGh

ana

Togo

Ango

laZa

mbi

aM

ozam

biqu

eNo

rthw

est a

nd S

outh

ern

M

adag

asca

r

Muc

h of

Indi

aTh

aila

ndCa

mbo

dia

Viet

nam

Sout

hern

Chi

naPa

rts

of In

done

sia

Part

s of

The

Phi

lippi

nes

Part

s of

Pap

ua N

ew G

uine

a

Plac

es W

ith S

imila

r Clim

ates

Acr

oss

the

Glob

e

• Ca

irns

Page 10: TROPICAL URBANISM A DESIGN APPROACH TECHNICAL … · Mount Peter • Design Approach Introduction The Mount Peter Design Manual describes and illustrates the impact of tropical wet-dry

Mou

nt P

eter

• D

esig

n Ap

proa

ch 9

Loca

l Clim

ate

Cont

ext

The

tropi

cal s

avan

nah

clim

ate

in w

hich

Cai

rns

is lo

cate

d is

cha

ract

erize

d by

its

dist

inct

wet

an

d dr

y se

ason

s an

d ha

ve m

ean

mon

thly

te

mpe

ratu

res

abov

e 18

deg

rees

Cel

sius

eve

ry

mon

th.

A la

rge

port

ion

of n

orth

ern

Aust

ralia

, in

clud

ing

Wes

tern

Aus

tralia

and

The

Nor

ther

n Te

rrito

ry, s

hare

the

sava

nnah

clim

ate.

Loc

ated

ju

st to

the

nort

hof C

airn

s ar

e ar

eas

that

are

in

the

next

-wet

test

cla

ssifi

catio

n, th

e tro

pica

l m

onso

on c

limat

e. T

his

clim

ate

is v

ery

sim

ilar t

o th

e tro

pica

l sav

anna

h bu

t rec

eive

s m

ore

annu

al

rain

. Th

e w

et s

easo

n in

Cai

rns

last

s fro

m

Nove

mbe

r to

May

, with

som

e m

onth

s av

erag

ing

mor

e th

an 4

00 m

m o

f rai

nfal

l, an

d th

e dr

y se

ason

is fr

om J

une

to O

ctob

er.

Cairn

s •

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Mou

nt P

eter

• D

esig

n Ap

proa

ch 10

The

tropi

cal s

avan

nah

clim

ate

is h

ot a

nd h

umid

al

l yea

r lon

g, d

urin

g bo

th th

e w

et a

nd d

ry

seas

ons.

Rel

ativ

e to

oth

er c

limat

es, t

here

is

little

var

iatio

n in

tem

pera

ture

bet

wee

n th

e ho

ttest

an

d co

ldes

t mon

ths.

The

ave

rage

hig

h in

the

cold

est m

onth

of J

uly

is 2

6° C

elsi

us w

hile

the

aver

age

high

in D

ecem

ber i

s 31

°, a

diffe

renc

e of

on

ly fi

ve d

egre

es.

The

aver

age

diur

nal s

win

g,

the

diffe

renc

e be

twee

n da

ytim

e an

d ni

ght-t

ime

tem

pera

ture

s is

abo

ut 6

° Cel

sius

yea

r rou

nd.

Beca

use

of th

e hi

gh te

mpe

ratu

res

year

roun

d in

Cai

rns,

and

the

larg

e am

ount

of i

nsol

atio

n,

shad

ing

is o

ne o

f the

mos

t effe

ctiv

e st

rate

gies

to

keep

peo

ple

com

fort

able

. An

d, w

ith a

n av

erag

e hu

mid

ity o

f 68

perc

ent,

it is

ext

rem

ely

impo

rtan

t to

mak

e us

e of

the

stro

ng p

reva

iling

win

ds to

as

sist

coo

ling.

Bec

ause

of t

he h

igh

hum

idity

an

d si

gnifi

cant

rain

fall

durin

g th

e w

et s

easo

n,

tech

niqu

es th

at a

llow

for n

atur

al v

entil

atio

n w

hile

pr

ovid

ing

prot

ectio

n fro

m th

e ra

in a

re m

ost

effe

ctiv

e. T

he h

eavy

rain

s co

ntrib

ute

to th

e lu

sh,

tropi

cal v

eget

atio

n fo

und

in C

airn

s an

d he

lp to

co

mpe

nsat

e fo

r the

rela

tivel

y lit

tle ra

infa

ll du

ring

the

dry

mon

ths

from

Jun

e to

Oct

ober

.

Rain

mm

750

700

650

600

550

500

450

400

350

300

250

200

150

100

50 0

Hum % 80.0

77.5

72.5

70.0

67.5

65.0

62.5

60.0

57.5

55.0

52.5

50.0

47.5

45.0

42.5 0

Tem

pC 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Hum

idity

Tem

pera

ture

Rain

fall

Page 12: TROPICAL URBANISM A DESIGN APPROACH TECHNICAL … · Mount Peter • Design Approach Introduction The Mount Peter Design Manual describes and illustrates the impact of tropical wet-dry

Mou

nt P

eter

• D

esig

n Ap

proa

ch 11

Mor

ning

Win

d Co

nditi

ons

Mor

ning

in C

airn

s pr

ovid

es th

e m

ost o

ppor

tuni

ty

for c

oolin

g th

roug

h na

tura

l ven

tilat

ion,

as

the

tem

pera

ture

is s

till r

elat

ivel

y lo

w w

ith c

onsi

sten

t pr

evai

ling

sout

herly

win

d.

Afte

rnoo

n W

ind

Cond

ition

sW

hile

afte

rnoo

n w

inds

tend

to b

e m

ore

disp

erse

d,

they

are

con

sist

ently

stro

nger

.

Sun

Path

At 1

6 de

gree

s la

titud

e, th

e su

n is

nea

rly

dire

ctly

ove

rhea

d m

ost o

f the

yea

r, w

ithou

t m

uch

varia

tion,

and

the

sun

rises

and

set

s at

a

fairl

y ev

en ti

me

thro

ugho

ut th

e ye

ar.

Beca

use

Cairn

s ha

s fe

w h

eatin

g da

ys, t

his

mak

es th

e st

rate

gy fo

r man

agin

g so

lar i

nsol

atio

n ve

ry

stra

ight

forw

ard.

Page 13: TROPICAL URBANISM A DESIGN APPROACH TECHNICAL … · Mount Peter • Design Approach Introduction The Mount Peter Design Manual describes and illustrates the impact of tropical wet-dry

Mou

nt P

eter

• D

esig

n Ap

proa

ch 12

Bioc

limat

ic C

hart

An u

nder

stan

ding

of t

he c

limat

ic c

onte

xt is

the

build

ing

bloc

k to

des

igni

ng

a bu

ildin

g in

whi

ch c

limat

e, p

rogr

am, a

nd fo

rm a

ll w

ork

toge

ther

to

crea

te a

com

fort

able

, effi

cien

t, an

d m

eani

ngfu

l spa

ce.

But t

he c

limat

ic

info

rmat

ion

does

not

mea

n an

ythi

ng o

n its

ow

n. I

t mus

t be

unde

rsto

od

in th

e co

ntex

t of h

ow it

affe

cts

the

hum

an b

ody;

spe

cific

ally,

how

the

body

resp

onds

to b

oth

tem

pera

ture

and

hum

idity

. Th

e bi

oclim

atic

cha

rt

offe

rs a

way

to u

nder

stan

d th

e re

latio

nshi

p be

twee

n cl

imat

e an

d hu

man

co

mfo

rt a

nd s

ugge

sts

tech

niqu

es fo

r res

pond

ing

to th

at c

limat

e. B

y pl

ottin

g av

erag

e te

mpe

ratu

re a

nd h

umid

ity h

ighs

and

low

s on

the

grap

h fo

r eac

h m

onth

, it i

s ea

sy to

see

wha

t ste

ps n

eed

to b

e ta

ken

in o

rder

to

prov

ide

com

fort

. Th

e da

ta fo

r Cai

rns

is p

lotte

d on

the

char

t and

sho

ws

that

the

maj

ority

of t

he y

ear f

alls

into

eith

er th

e co

mfo

rt z

one

or th

e na

tura

l ve

ntila

tion

zone

. Th

e tim

es d

urin

g th

e co

mfo

rt z

one

mea

ns th

at d

urin

g th

at ti

me

of y

ear,

the

outd

oor t

empe

ratu

re is

com

fort

able

eno

ugh

to li

ve

in.

Whe

n th

e lin

es m

ove

out o

f the

com

fort

zon

e, it

is n

eces

sary

to e

ither

he

at o

r coo

l the

spa

ce in

ord

er to

mak

e it

com

fort

able

. Du

ring

part

s of

th

e da

y in

eac

h m

onth

in C

airn

s, th

ere

are

times

whe

n a

build

ing

will

be

com

fort

able

with

out a

ny c

oolin

g an

d th

ere

will

be ti

mes

whe

n co

olin

g w

ill be

nee

ded.

Thi

s m

eans

that

man

y pa

ssiv

e co

olin

g te

chni

ques

use

d in

Cai

rns

will

have

to b

e op

erab

le, s

o th

at th

e am

ount

of v

entil

atio

n ca

n be

con

trolle

d by

the

occu

pant

. Du

ring

the

war

mer

mon

ths,

bet

wee

n No

vem

ber a

nd A

pril,

nat

ural

ven

tilat

ion

will

be n

eces

sary

and

suf

ficie

nt

to c

ool t

he b

uild

ing,

and

dur

ing

the

cool

er m

onth

s, b

etw

een

May

and

Oc

tobe

r, no

pas

sive

coo

ling

shou

ld b

e ne

cess

ary.

Alth

ough

the

cool

er

mon

ths

do d

ip in

to th

e pa

ssiv

e so

lar h

eatin

g ra

nge,

this

occ

urs

durin

g th

e ni

ght,

afte

r the

bui

ldin

g ha

s st

ored

up

som

e he

at fr

om th

e da

y, s

o no

he

atin

g sh

ould

be

nece

ssar

y. T

he te

chni

ques

that

follo

w a

re b

ased

on

the

resu

lts fr

om th

is c

hart

spe

cific

ally

for C

airn

s. T

hey

focu

s on

pas

sive

co

olin

g th

roug

h ve

ntila

tion,

pro

vidi

ng s

hade

from

the

sun,

and

pro

tect

ion

from

the

rain

, and

sho

uld

be c

onsi

sten

t with

the

tradi

tiona

l bui

ldin

g pa

ttern

s of

the

area

.1.

Bro

wn

54

2

2

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Mou

nt P

eter

• D

esig

n Ap

proa

ch 13

Des

ign

Pri

nci

ples

Gene

ral S

trat

egie

sPr

ovid

e gr

een

spac

e th

roug

hout

the

urba

n fa

bric

to p

rovi

de p

lace

s fo

r war

m

air t

o co

ol.

Orie

nt w

ide,

bre

ezy

stre

ets

to th

e w

ind

to p

rovi

de v

entil

atio

n w

hile

redu

cing

so

lar h

eat g

ain

for b

uild

ings

.Us

e de

ep o

verh

angs

, col

onna

des,

arc

ades

, ver

anda

hs, p

orch

es, a

nd b

alco

nies

to

prov

ide

prot

ectio

n fr

om th

e el

emen

ts to

bot

h pe

ople

and

bui

ldin

gs, a

nd

toef

fect

ivel

y fu

nnel

coo

ling

bree

zes

thro

ugh

the

urba

n en

viro

nmen

t and

the

build

ings

.Us

e co

urty

ards

and

atr

ium

s to

pro

mot

e ai

rflo

w th

roug

h bu

ildin

gs.

• • • •

Each

regi

on h

as d

istin

ct c

hara

cter

istic

s in

thei

r urb

anis

m a

nd

arch

itect

ure

that

are

a re

sult

of re

spon

ses

to th

e cl

imat

e. T

his

sect

ion

will

stud

y th

ose

resp

onse

s th

at a

pply

to th

e tro

pica

l w

et a

nd d

ry c

limat

e of

Cai

rns,

Aus

tralia

. Th

e bi

oclim

atic

ch

art s

ugge

sts

that

the

best

resp

onse

s fo

r Cai

rns

are

to

empl

oy p

assi

ve c

oolin

g be

caus

e it

is a

lway

s ho

t and

hum

id.

As a

resu

lt, th

e be

st te

chni

ques

for c

reat

ing

com

fort

able

en

viro

nmen

ts a

re th

ose

whi

ch p

rovi

de p

rote

ctio

n fro

m th

e ra

in a

nd s

un, a

nd a

cces

s to

the

win

d fro

m th

e so

uth

and

east

. Th

ese

tech

niqu

es a

re b

ased

on

wid

ely

acce

pted

urb

an

plan

ning

prin

cipl

es a

nd a

dapt

ed fo

r a tr

opic

al c

limat

e. T

he

basi

c pr

inci

ples

of q

ualit

y to

wn

plan

ning

dis

cuss

ed p

revi

ousl

y ap

ply

ever

ywhe

re, b

ut m

ust b

e cu

stom

ised

for t

he c

limat

e.

Beca

use

hum

idity

is o

ften

hard

er to

bea

r tha

n he

at, v

entil

atio

n is

the

mos

t im

port

ant p

assi

ve c

oolin

g te

chni

que

to e

mpl

oy in

Ca

irns.

Idea

lly, b

oth

acce

ss to

ven

tilat

ion

and

prot

ectio

n fro

m

the

sun

will

be p

rovi

ded,

but

in th

e ev

ent t

hat b

oth

are

not

poss

ible

, des

ign

for p

rope

r ven

tilat

ion.

Eac

h te

chni

que

liste

d in

the

follo

win

g pa

ges

shou

ld b

e un

ders

tood

indi

vidu

ally

but

ap

plie

d in

con

cert

with

the

othe

r tec

hniq

ues

so th

at th

ey a

ll w

ork

toge

ther

. Th

e te

chni

ques

are

div

ided

into

two

scal

es:

Urba

n an

d Bu

ildin

g. D

ecis

ions

mad

e at

eac

h sc

ale

will

affe

ct

the

desi

gn a

t all

scal

es, s

o it

is im

port

ant t

o un

ders

tand

how

ea

ch d

esig

n de

cisi

on a

ffect

s ot

hers

to b

e m

ade

late

r in

the

proc

ess.

All

of th

e te

chni

ques

are

spe

cific

to C

airn

s an

d ca

n be

use

d to

des

ign

tow

ns a

nd b

uild

ings

that

resp

ond

thou

ghtfu

lly to

the

loca

l clim

ate.

Urba

n Pl

anni

ng Te

chni

ques

Vent

ilatio

n Co

rrid

ors

Inte

rwea

ve B

uild

ings

and

Gre

ens

Bloc

k Or

ient

atio

nBr

eezy

Stre

ets

Lot D

ispo

sitio

nW

ide

Stre

ets

Shad

y St

reet

sW

ide

Side

wal

ksHi

erar

chy

of S

treet

sSh

ort,

Wal

kabl

e St

reet

s

1. 2. 3. 4. 5. 6. 7. 8. 9. 10.

Spec

ific

Tech

niqu

es

Build

ing

Tech

niqu

es11

. Out

door

Roo

ms

12. C

ool C

ourt

yard

s13

. Per

mea

ble

Build

ings

14. D

eep

Over

hang

s15

. Ext

erna

l Sha

de S

ize16

. Ven

tilat

ion

Open

ing

Arra

ngem

ent

17. V

entil

atio

n Op

enin

g Si

ze18

. Sta

ck V

entil

atio

n

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Urba

n Te

chni

ques

1. V

entil

atio

n Co

rrid

ors

Beca

use

dens

e ur

ban

area

s st

ore

mor

e he

at

durin

g th

e da

y th

an s

urro

undi

ng ru

ral a

reas

, th

ey a

lso

take

long

er to

coo

l. T

he w

arm

city

ai

r ris

es a

nd s

ucks

coo

ler a

ir fro

m th

e ci

ty

perim

eter

to th

e ce

ntre

. Th

is e

ffect

can

be

used

to c

ool t

he c

ity if

the

air c

omin

g in

is

sign

ifica

ntly

coo

ler t

han

the

air l

eavi

ng th

e ci

ty.

A ba

nd o

f und

evel

oped

, veg

etat

ed la

nd a

t the

pe

rimet

er o

f the

urb

an a

rea

can

serv

e as

a c

ool

air s

ourc

e. W

ide

corr

idor

s fo

r the

coo

l air

to

circ

ulat

e th

roug

h th

e ci

ty a

re n

eces

sary

. In

Ca

irns,

the

unde

velo

ped

land

sho

uld

be to

the

sout

h an

d ea

st, s

o th

e pr

evai

ling

win

ds c

an

brin

g in

coo

l air

from

the

perim

eter

of t

he c

ity.

Orie

nt th

e ve

ntila

tion

corr

idor

s ne

ar s

outh

east

/no

rthw

est t

o fa

cilit

ate

acce

ss to

win

ds fr

om

the

east

and

sou

th.

Corr

idor

s sh

ould

ext

end

from

the

gree

nbel

t to

the

cent

re u

nint

erru

pted

. Co

rrid

ors

can

be b

oule

vard

s, p

arkw

ays,

or a

ne

twor

k of

par

ks.2

Clim

atic

Con

text

: Hot

and

Hum

id

Scal

e: U

rban

Resp

onse

: Des

ign

vent

ilatio

n co

rrid

ors

into

an

urba

n ce

ntre

to b

ring

cool

air

into

the

city

from

th

e un

deve

lope

d pe

rimet

er.

Hava

na, C

uba

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2. I

nter

wea

ve B

uild

ings

with

Gre

ens

The

tem

pera

ture

in u

rban

are

as is

ofte

n hi

gher

than

in ru

ral

area

s du

e to

the

heat

isla

nd e

ffect

. Be

acus

e ci

ties

have

m

ore

impe

rvio

us s

urfa

ces

that

abs

orb

sola

r rad

iatio

n, s

uch

as ro

ads

and

roof

tops

, tem

pera

ture

s ar

e of

ten

cons

ider

ably

hi

gher

in u

rban

are

as th

an in

sur

roun

ding

rura

l are

as.

This

is m

ost n

otic

eabl

e at

nig

ht, w

hen

obje

cts

that

hav

e re

tain

ed h

eat d

urin

g th

e da

y be

gin

to re

leas

e it

to th

e co

oler

ni

ght a

ir, th

us k

eepi

ng th

e ci

ty w

arm

whi

le it

sho

uld

be

cool

ing.

Pl

ante

d gr

eens

pla

ced

thro

ugho

ut a

n ur

ban

area

al

ong

with

the

tech

niqu

e “#

1 Ve

ntila

tion

Corr

idor

s,”

will

help

to c

ircul

ate

cool

er a

ir m

ore

cons

iste

ntly

and

abs

orb

mor

e he

at w

ithou

t re-

radi

atin

g it

into

the

air a

t nig

ht.

It is

pr

efer

able

to h

ave

man

y sm

alle

r, ev

enly

dis

tribu

ted

gree

ns

than

few

er la

rge

ones

. De

ep b

uild

ing

lots

with

larg

e re

ar

setb

acks

pro

vide

pla

ces

for g

reen

spa

ce a

nd p

lant

ing

mid

-blo

ck w

hich

can

con

tribu

te to

the

redu

ctio

n of

the

heat

isla

nd e

ffect

. Th

e co

olin

g ef

fect

is a

resu

lt of

pla

nted

tre

es a

nd o

ther

veg

etat

ion,

whi

ch p

rovi

de s

hade

, and

ev

apot

rans

pira

tion,

whi

ch re

plac

es ri

sing

hea

ted

air i

n ur

ban

area

s w

ith c

oole

r air

from

the

park

s. A

dditi

onal

ly, re

plac

ing

hard

scap

e su

rfac

es w

ith g

rass

and

bui

ldin

g gr

een

roof

s on

bu

ildin

gs c

an s

ubst

antia

lly re

duce

the

heat

isla

nd e

ffect

in a

n ur

ban

area

. 3

Clim

atic

Con

ditio

n: H

ot

Scal

e: U

rban

Resp

onse

: Int

erw

eave

bui

ldin

gs a

nd p

lant

ed g

reen

s to

re

duce

am

bien

t air

tem

pera

ture

in u

rban

are

as.

Sava

nnah

, Geo

rgia

, Uni

ted

Stat

es

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3. B

lock

Orie

ntat

ion

Beca

use

heat

ing

is n

ever

nec

essa

ry in

Cai

rns,

bu

ildin

gs, a

nd e

spec

ially

win

dow

s, s

houl

d be

sha

ded

from

the

sun

as m

uch

as p

ossi

ble.

Cor

rect

ly o

rient

ing

the

bloc

ks w

ill pr

ovid

e bu

ildin

gs w

ith le

ss s

urfa

ce

expo

sure

that

can

gai

n so

lar h

eat.

Bec

ause

the

sun

is

low

in th

e sk

y in

the

mor

ning

and

eve

ning

, it c

an s

hine

in

to a

bui

ldin

g’s

east

and

wes

t exp

osur

es a

nd h

eat u

p th

e bu

ildin

g qu

ickl

y. T

o co

mba

t thi

s, b

uild

ings

sho

uld

have

sho

rt e

ast a

nd w

est e

xpos

ures

and

long

nor

th

and

sout

h ex

posu

res.

The

nor

th e

xpos

ure

shou

ld b

e w

ell s

hade

d (s

ee #

15 E

xter

nal S

hade

Size

) to

prot

ect

from

sol

ar g

ain,

whi

le th

e so

uth

expo

sure

sho

uld

have

larg

e w

indo

ws

to in

crea

se d

aylig

htin

g. B

ased

on

thes

e fa

ctor

s, b

lock

s sh

ould

be

orie

nted

with

the

maj

or s

treet

s ru

nnin

g ne

ar n

orth

-sou

th s

o th

at d

eep

lots

will

allo

w b

uild

ings

to b

e or

ient

ed w

ith th

eir l

ong

side

s fa

cing

nor

th a

nd s

outh

. M

ajor

stre

ets

shou

ld ru

n ne

ar n

orth

-sou

th w

ith s

econ

dary

stre

ets

runn

ing

east

-w

est.

Thi

s al

so a

llow

s th

e sh

ort s

ides

of t

he b

uild

ing

to fa

ce th

e st

reet

, add

ing

dive

rsity

and

inte

rest

to th

e st

reet

scap

e. U

se th

is te

chni

que

with

#4

Bree

zy S

treet

s to

cre

ate

the

mos

t com

fort

able

urb

an e

nviro

nmen

t.

Clim

atic

Con

ditio

n: H

ot

Scal

e: U

rban

Resp

onse

: Orie

nt b

lock

s w

ith th

e lo

ng s

ides

runn

ing

nort

h-so

uth

and

shor

t sid

es ru

nnin

g ea

st-w

est t

o re

duce

sol

ar g

ain

in b

uild

ings

.

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4. B

reez

y St

reet

sPr

oper

ven

tilat

ion

in h

ot, h

umid

clim

ates

hel

ps

to re

mov

e ex

cess

hea

t fro

m th

e ci

ty a

nd p

rovi

de

cros

s ve

ntila

tion

in b

uild

ings

. Ur

ban

area

s dr

amat

ical

ly re

duce

win

d sp

eed

at g

roun

d le

vel,

so a

thou

ghtfu

l arr

ange

men

t of s

treet

s an

d bu

ildin

gs c

an h

elp

to c

ount

er th

is e

ffect

. Or

ient

ing

stre

ets

para

llel t

o th

e pr

evai

ling

win

d w

ill pr

ovid

e th

ose

stre

ets

with

max

imum

air

mov

emen

t, bu

t cro

ss s

treet

s pe

rpen

dicu

lar

to th

e w

ind

will

not h

ave

good

ven

tilat

ion.

To

crea

te b

reez

y st

reet

s an

d m

axim

ize c

ross

ve

ntila

tion

in b

uild

ings

, mai

n st

reet

s sh

ould

be

orie

nted

20-

30° t

o th

e pr

evai

ling

win

d. T

his

will

prom

ote

air f

low

dow

n al

l stre

ets

and

crea

te

posi

tive

pres

sure

on

two

side

s of

the

build

ings

. By

cre

atin

g po

sitiv

e pr

essu

re o

n tw

o si

des

of

a bu

ildin

g, th

ere

will

be m

ore

surf

ace

area

to

use

as in

lets

for c

ross

ven

tilat

ion.

Sin

ce th

e w

ind

in C

airn

s is

from

the

sout

h-so

uthe

ast,

mai

n st

reet

s sh

ould

be

orie

nted

20°

from

due

so

uth

to m

axim

ize w

ind

spee

d in

stre

ets

and

keep

blo

ck o

rient

atio

n cl

oses

t to

nort

h-so

uth

as

reco

mm

ende

d in

#3

Bloc

k Or

ient

atio

n.4

Clim

atic

Con

ditio

n: H

ot a

nd H

umid

Scal

e: U

rban

Resp

onse

: Orie

nt s

treet

s to

the

prev

ailin

g w

ind

to in

crea

se b

reez

es a

nd a

cces

s to

cro

ss

vent

ilatio

n.

20°

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5. L

ot D

ispo

sitio

n

The

plac

emen

t of b

uild

ings

on

a lo

t can

hav

e an

im

pact

on

the

qual

ity o

f the

nei

ghbo

urho

od b

ut c

an

also

cre

ate

desi

reab

le m

icro

clim

ates

and

dire

ct th

e w

ind

for n

atur

al v

entia

ltion

. By

offs

ettin

g bu

ildin

gs

on o

ppos

ite s

ides

of t

he b

lock

, pat

hs fo

r the

win

d to

mov

e th

roug

h ar

e cr

eate

d, a

s w

ell a

s pr

ivat

e ou

tdoo

r roo

ms.

The

pla

cem

ent o

f bui

ldin

gs o

n a

lot m

ust b

e co

ded

and

adhe

red

to b

y al

l lot

s fo

r the

de

sire

d ef

fect

to o

ccur

. Lo

ts a

nd b

uild

ings

sho

uld

be b

oth

deep

and

nar

row

, with

the

build

ing

push

ed

up a

gain

st o

ne o

f the

sid

e lo

t lin

es.

The

build

ing

shou

ld h

ave

the

maj

ority

of o

peni

ngs

faci

ng in

to

its o

wn

lot w

hile

the

side

aga

inst

the

lot l

ine

shou

ld

have

min

imal

win

dow

s fo

r sun

light

and

ven

tialti

on.

This

will

crea

te a

priv

ate

outd

oor s

pace

on

each

lot

for t

he o

ccup

ants

of t

he b

uild

ing.

See

Tec

hniq

ue

#11

Out

door

Roo

ms

for i

nfor

mat

ion

on w

here

to

desi

gn o

utdo

or ro

oms

effe

ctiv

ely.

By

offs

ettin

g th

e bu

ildin

gs o

n ei

ther

sid

e of

the

bloc

k, w

ind

path

s ar

e cr

eate

d th

at p

rovi

de b

ette

r cro

ss v

entil

atio

n to

all

build

ings

.

Clim

atic

Con

ditio

n: H

ot a

nd H

umid

Scal

e: U

rban

Resp

onse

: Offs

et b

uild

ings

on

lots

to e

ncou

rage

air

flow

bet

wee

n an

d th

roug

h bu

ildin

gs w

hile

cre

atin

g pr

ivat

e m

icro

clim

ates

.

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6. W

ide

Stre

ets

In C

airn

s, it

is d

esira

ble

to h

ave

air m

ovem

ent t

hrou

gh th

e st

reet

s at

all

times

of t

he y

ear.

Sho

rt b

uild

ings

on

wid

e st

reet

s pr

omot

e m

ore

air m

ovem

ent t

han

tall

build

ings

on

narr

ow s

treet

s. T

he

follo

win

g ra

tios

are

dete

rmin

ed fo

r stre

ets

orie

nted

par

alle

l with

the

prev

ailin

g w

ind.

A s

treet

sec

tion

that

has

a 1

:1 ra

tio o

f bui

ldin

g he

ight

to w

idth

will

allo

w a

ppro

xim

atel

y 50

% o

f the

uno

bstru

cted

w

ind

velo

city

in th

e ar

ea, b

ut th

at p

erce

ntag

e w

ill go

up

as th

e st

reet

get

s w

ider

, but

stil

ls re

tain

s a

1:1

ratio

. A

stre

et s

ectio

n of

app

roxi

mat

ely

1:2

heig

ht to

wid

th w

ill al

low

app

roxi

mat

ely

60%

of t

he u

nobs

truct

ed w

ind

spee

d. A

stre

et s

ectio

n of

ap

prox

imat

ely

1:4

heig

ht to

wid

th w

ill al

low

app

roxi

mat

ely

75%

of

the

unob

stru

cted

win

d ve

loci

ty.

Ther

efor

e, in

Cai

rns

with

an

unob

stru

cted

win

d ve

loci

ty o

f 20

km/h

, a 1

:1 ra

tio w

ill al

low

a 1

0 km

/h b

reez

e th

roug

h th

e st

reet

s, a

1:2

ratio

will

allo

w 1

2 km

/h

win

d, a

nd a

1:4

ratio

will

allo

w 1

5 km

/h w

inds

, if t

he s

treet

is

para

llel t

o th

e w

ind

dire

ctio

n. B

ecau

se it

is p

refe

rabl

e to

hav

e th

e st

reet

orie

nted

at a

n an

gle

to th

e w

ind

(see

#4

Bree

zy S

treet

s)

thes

e pe

rcen

tage

s w

ill de

crea

se s

light

ly. W

hile

the

stre

et s

houl

d be

wid

e to

allo

w b

reez

es, i

t mus

t be

desi

gned

thou

ghtfu

lly to

cr

eate

a p

leas

ant p

edes

trian

exp

erie

nce.

Med

ians

in th

e m

iddl

e of

a b

oule

vard

bre

ak th

e st

reet

into

wal

kabl

e se

ctio

ns a

nd g

ive

pede

stria

ns a

refu

ge w

hile

cro

ssin

g, a

nd a

lso

prov

ide

a pl

ace

for m

ore

trees

. Se

e al

so #

7 W

ide

Side

wal

ks fo

r stre

et d

etai

ling

info

rmat

ion.

Driv

ing

lane

s sh

ould

not

be

wid

ened

or a

dded

to

incr

ease

stre

et w

idth

.5

Clim

atic

Con

text

: Hot

and

Hum

id

Scal

e: U

rban

Resp

onse

: Des

ign

wid

e st

reet

s to

enc

oura

ge b

reez

es.

Boul

evar

d Se

ctio

n

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7. S

hady

Stre

ets

In h

ot-h

umid

clim

ates

, bui

ldin

gs s

houl

d be

pl

aced

on

wid

e st

reet

s to

enc

oura

ge c

ross

ve

ntila

tion

dow

n th

e st

reet

. Be

caus

e w

ide

stre

ets

do n

ot o

ffer m

uch

shad

e, u

se h

orizo

ntal

sh

adin

g el

emen

ts s

uch

as ro

ofs,

per

gola

s,

awni

ngs,

col

onna

des,

arc

ades

, and

tree

s to

sh

ade

the

stre

et a

nd th

e bu

ildin

gs.

In h

ot a

rid

clim

ates

, it i

s be

tter t

o de

sign

tall

narr

ow s

treet

s to

pro

vide

sha

de b

ecau

se th

ere

is n

o ne

ed

for v

entil

atio

n. I

n Ca

irns,

ven

tilat

ion

is m

ore

impo

rtan

t tha

n sh

ade

beca

use

of th

e hu

mid

ity,

so s

hort

, wid

e st

reet

sec

tions

are

pre

fera

ble.

Us

e bu

ildin

g el

emen

ts to

pro

vide

sha

de w

hile

al

low

ing

vent

ilatio

n an

d pr

ovid

ing

prot

ectio

n fro

m th

e ra

in.

Stre

et tr

ees

redu

ce o

vera

ll so

lar

inso

latio

n, p

rovi

de a

mor

e co

mfo

rtab

le w

alki

ng

envi

ronm

ent,

and

crea

te a

mor

e pl

easi

ng u

rban

en

viro

nmen

t by

redu

cing

the

appa

rent

wid

th o

f th

e st

reet

.

Clim

atic

Con

text

: Hot

and

Hum

id

Scal

e: U

rban

Resp

onse

: Use

hor

izont

al s

hadi

ng e

lem

ents

to

sha

de b

uild

ings

and

ped

estri

ans

on w

ide

stre

ets.

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8. W

ide

Side

wal

ksSi

dew

alk

desi

gn c

an g

reat

ly e

nhan

ce th

e ur

ban

envi

ronm

ent a

nd is

ver

y im

port

ant w

hen

desi

gnin

g w

ide

stre

ets.

Bec

ause

win

d m

oves

fast

er d

own

wid

e st

reet

s,

stre

et s

ectio

ns s

houl

d ha

ve g

reat

er th

an 1

:1 ra

tios

(see

#6

Wid

e St

reet

s), b

ut a

ctua

l pav

emen

t for

car

s sh

ould

be

kept

as

min

imal

as

poss

ible

to e

ncou

rage

sl

ower

driv

ing

and

a sa

fer p

edes

trian

env

ironm

ent.

To

acco

mpl

ish

this

, des

ign

wid

e si

dew

alks

that

incr

ease

th

e st

reet

sec

tion,

but

alw

ays

prov

ide

shad

e fo

r the

st

reet

(see

#7

Shad

y St

reet

s).

Tree

s in

pla

nter

s or

pl

antin

g st

rips

shou

ld li

ne th

e st

reet

s an

d be

spa

ced

ever

y 10

met

res

to d

ecre

ase

the

perc

eive

d w

idth

of t

he

stre

et.

Addi

tiona

lly, p

orch

es, c

anop

ies,

and

ver

anda

hs

on b

uild

ings

that

ext

end

into

the

side

wal

k pe

rmit

bree

zes

to p

ass

whi

le d

ecre

asin

g th

e w

idth

bet

wee

n bu

ildin

gs.

For t

all b

uild

ings

, des

ign

the

base

of t

he b

uild

ing

up to

th

e si

dew

alk

and

set t

he to

wer

bac

k to

cre

ate

a w

ider

sp

ace

for a

ir flo

w tw

o st

orie

s ab

ove

the

grou

nd.

Fina

lly,

desi

gn s

treet

s w

ith o

n-st

reet

par

king

to b

oth

wid

en th

e st

reet

for v

entil

atio

n an

d en

cour

age

slow

traf

fic.

Wid

e si

dew

alks

can

be

oppr

esiv

e in

hot

clim

ates

so

be s

ure

to p

rovi

de e

noug

h sh

ade

to c

ount

er th

e w

idth

.

Clim

atic

Con

ditio

n: H

ot

Scal

e: U

rban

Resp

onse

: Des

ign

wid

e si

dew

alks

, sca

led

to th

e bu

ildin

gs w

ith a

mpl

e su

n an

d ra

in p

rote

ctio

n, to

wid

en

the

stre

et s

ectio

n w

ithou

t add

ing

driv

ing

lane

s.

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9. H

iera

rchy

of S

treet

sUr

ban

area

s sh

ould

be

desi

gned

with

a w

ell

deve

lope

d st

reet

net

wor

k w

ith a

hie

rarc

hy o

f stre

et

type

s. A

hie

rarc

hy o

f stre

ets

supp

ort d

iffer

ent

build

ing

type

s, h

eigh

ts, a

nd s

etba

cks

whi

ch c

an

prom

ote

a gr

eate

r var

iety

of s

ite s

peci

fic c

limat

ic

desi

gn re

spon

ses,

incl

udin

g ve

geta

tion

and

crea

tion

of in

divi

dual

mic

rocl

imat

es in

add

ition

to fa

cilit

atin

g cr

oss-

vent

ialti

on.

A di

vers

e ne

twor

k al

so d

ispe

rses

traf

fic th

roug

hout

th

e ur

ban

area

, dis

cour

agin

g tra

ffic

jam

s, a

nd

prov

ides

a n

umbe

r of e

ffici

ent o

ptio

ns fo

r get

ting

betw

een

two

poin

ts, b

oth

of w

hich

redu

ce V

MT

and

heat

isla

nd e

ffect

s. I

n a

heira

rchi

cal n

etw

ork,

st

reet

s ar

e de

sign

ed s

peci

fical

ly fo

r the

vol

ume

of

activ

ity th

ey c

arry

, fro

m w

ide

boul

evar

ds d

own

to

alle

ys, a

nd c

an b

e op

timize

d ar

ound

bot

h pe

dest

rian

com

fort

, to

enco

urag

e m

ore

wal

king

, and

/or

vehi

cula

r effi

cien

cy.

A hi

erar

chic

al s

treet

net

wor

k ca

n al

so d

ivid

e th

e ci

ty in

to a

ser

ies

of in

ter-c

onne

cted

, dis

cree

t ne

ighb

ourh

oods

whi

ch fu

nctio

n m

ore

effic

ient

ly,

both

indi

vidu

ally

and

col

lect

ivel

y.

Clim

atic

Con

ditio

n: H

ot a

nd H

umid

Scal

e: U

rban

Resp

onse

: Des

ign

a hi

erar

chy

of s

treet

s to

dis

pers

e tra

ffic,

redu

cing

the

heat

isla

nd e

ffect

, and

cre

ate

wal

kabl

e st

reet

s.

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10.

Shor

t, W

alka

ble

Stre

ets

Shor

t stre

ets

brea

k up

the

urba

n co

ntex

t int

o bl

ocks

that

are

com

fort

able

for p

edes

trian

act

ivity

an

d pr

ovid

e m

any

aven

ues

for v

entil

atio

n. S

hort

er

bloc

ks c

reat

e m

ore

stre

ets,

whi

ch a

dds

to a

robu

st

stre

et n

etw

ork

whi

le p

rovi

ding

mor

e av

enue

s fo

r ven

tilat

ion

thro

ugh

the

city

. Th

ey a

lso

crea

te

mor

e in

ters

ectio

ns w

hich

slo

w tr

affic

, enh

anci

ng

the

pede

stria

n en

viro

nmen

t. T

he re

sult

of s

hort

, w

alka

ble

stre

ets

is a

net

wor

k of

cor

ridor

s fo

r air

mov

emen

t thr

ough

out t

he u

rban

are

a as

wel

l as

a ne

twor

k of

stre

ets

for t

raffi

c to

dis

pers

e am

ong.

Bl

ocks

sho

uld

be d

imen

sion

ed a

ppro

xim

atel

y be

twee

n 60

to 1

00 m

etre

s fo

r the

sho

rt s

ides

an

d 10

6 to

137

met

res

for t

he lo

ng s

ides

to b

e co

mfo

rtab

le fo

r ped

estri

ans.

Dee

per l

ots

prov

ide

the

addi

tiona

l ben

efit

of c

reat

ing

mor

e sp

ace

insi

de

the

bloc

k fo

r gre

en s

pace

and

sha

de, h

elpi

ng to

re

duce

the

heat

isla

nd e

ffect

in u

rban

are

as. T

hese

di

men

sion

s pr

ovid

e de

ep e

noug

h lo

ts a

nd e

noug

h le

ngth

to h

ave

a va

riety

of b

uild

ings

on

one

bloc

k w

hile

not

cre

atin

g an

ove

rbea

ring

dist

ance

for

pede

stria

ns to

wal

k.

Clim

atic

Con

ditio

n: H

ot

Scal

e: U

rban

Resp

onse

: Des

ign

shor

t stre

ets

to e

ncou

rage

pe

dest

rian

mov

emen

t and

slo

w tr

affic

whi

le

prov

idin

g m

any

corr

idor

s fo

r air

mov

emen

t.

137m10

6m60

m

100m

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Build

ing

Tech

niqu

es

11.

Outd

oor R

oom

sBu

ildin

gs c

an b

e ar

rang

ed to

cre

ate

outd

oor

mic

rocl

imat

es th

at a

re c

omfo

rtab

le to

occ

upy.

Ar

rang

ing

outd

oor s

pace

s w

ith re

spec

t to

build

ings

an

d ve

geta

tion

so th

at th

ey a

re v

entil

ated

and

sh

aded

pro

vide

s co

mfo

rt fo

r occ

upan

ts a

ll ye

ar.

Beca

use

the

sun

is s

hini

ng fr

om th

e no

rth,

but

the

maj

ority

of p

reva

iling

win

ds a

re fr

om th

e so

uth

and

east

in C

airn

s, o

utdo

or ro

oms

shou

ld id

eally

be

loca

ted

to th

e so

uth

with

obj

ects

to fu

nnel

the

win

d th

roug

h th

e sp

ace

or b

etw

een

build

ings

with

a

roof

ove

rhea

d. O

ther

opt

ions

incl

ude

desi

gnin

g m

ultip

le o

utdo

or ro

oms

to u

se d

urin

g di

ffere

nt ti

mes

of

day

or t

o us

e sh

utte

rs o

r ver

tical

louv

ers

to s

hade

w

hile

allo

win

g ve

ntila

tion.

Por

ches

and

bal

coni

es

with

dee

p ov

erha

ngs

loca

ted

in th

e pa

th o

f the

w

ind

prov

ide

com

fort

able

out

door

room

s. I

f it i

s no

t pos

sibl

e to

pro

vide

bot

h sh

ade

and

vent

ilatio

n th

roug

h an

out

door

room

, des

ign

first

for v

entil

atio

n.

In C

airn

s, b

ecau

se th

e hu

mid

ity c

ause

s m

ore

disc

omfo

rt th

an th

e he

at, i

t is

mor

e im

port

ant t

o de

sign

for a

dequ

ate

cros

s-ve

ntila

tion

than

sha

ding

.6

Clim

atic

Con

ditio

n: H

ot a

nd H

umid

Scal

e: B

uild

ing

Resp

onse

: Arr

ange

out

door

room

s to

be

shad

ed

whi

le e

ncou

ragi

ng c

ross

ven

tilat

ion.

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12.

Cool

Cou

rtyar

dsIn

cou

rtya

rds,

win

d co

nditi

ons

are

a pr

oduc

t of

the

prop

ortio

n of

bui

ldin

g he

ight

to c

ourt

yard

w

idth

, sim

ilar t

o a

stre

et.

Build

ings

cre

ate

a zo

ne o

f low

pre

ssur

e be

hind

them

that

the

win

d do

es n

ot re

ach,

so

the

wid

er th

e co

urty

ard

in th

e di

rect

ion

of th

e w

ind,

the

grea

ter t

he

velo

city

of t

he a

ir m

ovem

ent.

In C

airn

s, a

wid

e co

urty

ard

will

allo

w li

ttle

prot

ectio

n fro

m th

e su

n so

oth

er s

hadi

ng e

lem

ents

, suc

h as

tree

s,

balc

onie

s, a

nd v

eran

dahs

sho

uld

be u

sed

to

prov

ide

shad

e. P

rovi

ding

pla

ces

in th

e bu

ildin

g w

here

the

win

d ca

n en

ter a

nd e

xit t

he c

ourt

yard

at

gro

und

leve

l, su

ch a

s a

logg

ia, c

an h

elp

to d

ram

atic

ally

coo

l the

spa

ce.

A co

urty

ard

orie

ntat

ion

45° f

rom

the

prev

ailin

g w

ind

will

max

imize

s br

eeze

s in

the

cour

tyar

d an

d cr

oss

vent

ilatio

n fo

r the

bui

ldin

g.7

Clim

atic

Con

ditio

n: H

ot a

nd H

umid

Scal

e: B

uild

ing

Resp

onse

: Des

ign

low

, wid

e, p

erm

eabl

e co

urty

ards

to a

llow

max

imum

airf

low

.

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13.

Perm

eabl

e Bu

ildin

gsOp

en fl

oor p

lans

and

bui

ldin

g se

ctio

ns

enco

urag

e cr

oss

vent

ilatio

n th

roug

h a

build

ing.

Th

e fe

wer

obs

truct

ions

in a

bui

ldin

g, th

e le

ss

resi

stan

ce th

e br

eeze

s w

ill en

coun

ter.

Ope

ning

s on

bot

h si

des

of a

room

in p

lan,

and

sta

ck

vent

ilatio

n te

chni

ques

in s

ectio

n, e

ncou

rage

m

axim

um a

irflo

w.

A nu

mbe

r of d

esig

n st

rate

gies

to o

ptim

ize v

entil

atio

n in

clud

e hi

gh

ceilin

gs, a

trium

s, e

leva

ted

first

floo

rs, o

pen

floor

pl

ans,

and

tran

som

win

dow

s. P

lenu

ms

abov

e ha

llway

s in

sin

gle

load

ed b

uild

ings

can

pro

vide

cr

oss

vent

ilatio

n to

thos

e un

its.

Use

trans

om

win

dow

s to

pro

vide

priv

acy

whi

le p

rom

otin

g cr

oss

vent

ilatio

n w

ithin

uni

ts o

r in

mot

el s

tyle

bu

ildin

g ty

pes.

Cro

ss a

nd s

tack

ven

tilat

ion

can

wor

k in

depe

nden

tly o

f eac

h ot

her o

r in

conc

ert,

but w

hen

desi

gned

toge

ther

, par

ts o

f bot

h th

e pl

an a

nd s

ectio

n m

ust b

e ke

pt o

pen

to a

ir m

ovem

ent.8

Clim

atic

Con

ditio

n: H

ot a

nd H

umid

Scal

e: B

uild

ing

Resp

onse

: Des

ign

perm

eabl

e bu

ildin

gs in

pla

n an

d se

ctio

n to

enc

oura

ge a

ir flo

w th

roug

h th

e bu

ildin

g.

Plan

Sect

ion

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14.

Deep

Ove

rhan

gsTh

e ea

st, n

orth

, and

wes

t orie

ntat

ions

of

build

ings

in C

airn

s sh

ould

hav

e sh

adin

g de

vice

s su

ch a

s ov

erha

ngs,

por

ches

, ver

anda

hs, a

nd

awni

ngs

to k

eep

the

sun

off t

he w

alls

and

w

indo

ws

to re

duce

sol

ar h

eat g

ain.

The

se

shad

ing

devi

ces

also

hel

p ke

ep ra

in a

way

from

th

e bu

ildin

g so

that

win

dow

s ca

n be

left

open

to

vent

ilate

the

spac

es.

See

“#15

Ext

erna

l Sha

de

Size

” to

det

erm

ine

how

dee

p an

ove

rhan

g sh

ould

be.

Ove

rhan

gs o

n th

e ea

st a

nd w

est

side

s of

bui

ldin

gs s

houl

d be

dee

per t

han

thos

e on

the

nort

h si

de b

ecau

se th

e su

n is

low

er in

th

e sk

y in

the

mor

ning

and

eve

ning

, whe

n it

is

in th

e ea

ster

n an

d w

este

rn s

kies

. Lou

vers

and

la

ttice

s in

the

vert

ical

pla

ne, a

nd p

lant

s, c

an

also

be

used

to s

hade

wal

ls.

At th

e st

reet

leve

l, de

sign

arc

ades

, col

onna

des,

and

aw

ning

s to

pr

otec

t ped

estri

ans

from

the

sun

and

rain

. A

cont

inuo

usly

cov

ered

stre

etsc

ape

will

grea

tly

enha

nce

the

pede

stria

n en

viro

nmen

t.

Clim

atic

Con

ditio

n: H

ot

Scal

e: B

uild

ing

Resp

onse

: Des

ign

deep

ove

rhan

gs, p

orch

es,

and

vera

ndah

s to

sha

de w

indo

ws

and

wal

ls

from

the

sun.

Des

ign

colo

nnad

es, a

rcad

es,

and

awni

ngs

to p

rote

ct p

edes

trian

s fro

m th

e el

emen

ts.

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15. E

xter

nal S

hade

Size

Shad

ing

devi

ces

shou

ld b

e si

zed

base

d on

the

times

of y

ear

whe

n it

is a

dvis

able

to k

eep

dire

ct s

un o

ff th

e bu

ildin

g. B

ecau

se

of th

e hi

gh y

ear r

ound

tem

pera

ture

s in

Cai

rns,

sha

ding

dev

ices

sh

ould

pro

tect

aga

inst

the

sun

all y

ear l

ong.

Bec

ause

the

sun

is h

ighe

r in

the

mid

dle

of th

e da

y, h

orizo

ntal

sha

ding

dev

ices

ar

e ef

fect

ive

on n

orth

ern

expo

sure

s w

hile

on

east

and

wes

t ex

posu

res,

ver

tical

sha

ding

dev

ices

are

bes

t bec

ause

the

sun

is lo

wer

in th

e sk

y. H

orizo

ntal

sha

ding

wou

ld h

ave

to b

e ve

ry

deep

to b

e ab

le to

sha

de e

ast a

nd w

est e

xpos

ures

. Ve

rtic

al

shad

ing

on th

e ea

st a

nd w

est e

xpos

ures

are

mos

t effe

ctiv

e w

hen

slan

ted,

as

oppo

sed

to p

erpe

ndic

ular

, so

that

the

sun

can

not s

hine

in w

hen

perp

endi

cula

r to

the

build

ing.

Usi

ng a

co

mbi

natio

n of

hor

izont

al a

nd v

ertic

al s

hadi

ng is

als

o ef

fect

ive.

Ho

rizon

tal s

hade

s su

ch a

s de

ep ro

of o

verh

angs

, por

ches

, and

ba

lcon

ies

are

effe

ctiv

e in

blo

ckin

g he

at g

ain,

but

als

o lim

it th

e am

ount

of d

aylig

ht in

to a

spa

ce.

On th

e ot

her h

and,

a b

riese

so

leil

or h

orizo

ntal

louv

ers

will

bloc

k he

at g

ain

whi

le a

llow

ing

mor

e da

ylig

ht, b

ut d

o no

t pro

tect

aga

inst

the

rain

. Ve

rtic

al

louv

ers

are

also

effe

ctiv

e at

pro

vidi

ng p

rote

ctio

n fro

m th

e su

n.

Thes

e is

sues

mus

t be

take

n in

to a

ccou

nt w

hen

desi

gnin

g. I

t is

impo

rtan

t to

shad

e w

alls

as

wel

l as

win

dow

s in

Cai

rns,

and

pr

ovid

e pr

otec

tion

from

the

rain

. Th

eref

ore,

whe

n po

ssib

le,

deep

ove

rhan

gs a

nd c

over

ed p

orch

es a

re p

refe

rabl

e to

oth

er

type

s of

sha

ding

dev

ices

. W

hen

over

hang

s an

d po

rche

s ar

e no

t dee

p en

ough

, use

eith

er h

orizo

ntal

or v

ertic

al s

hadi

ng

elem

ents

.9

Use

the

follo

win

g eq

uatio

ns to

det

erm

ine

how

dee

p a

shad

ing

devi

ce s

houl

d be

:

y

x

North

ern

Expo

sure

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For h

orizo

ntal

sha

ding

on

a No

rthe

rn E

xpos

ure:

x =

p(y

)

P =

1.5

4 to

sha

de a

ll ye

ar a

t 16°

S

P =

.75

to s

hade

Aug

ust –

Apr

il at

16°

S (m

inim

um o

verh

ang)

For h

orizo

ntal

sha

ding

on

East

and

Wes

t Exp

osur

es: x

= p

(y)

P

= 2

.4 to

sha

de a

ll ye

ar a

t 16°

S

P =

2.0

2 to

sha

de A

ugus

t – A

pril

at

1

6°S

(min

imum

ove

rhan

g)

For v

ertic

al s

hadi

ng o

n Ea

st a

nd W

est E

xpos

ures

Azim

uth

angl

e (m

easu

red

from

nor

th) =

108

°

to s

hade

all

year

.

Clim

atic

Con

ditio

n: H

ot a

nd R

ainy

Scal

e: B

uild

ing

Resp

onse

: Size

sha

ding

dev

ices

to p

rote

ct w

alls

and

win

dow

s fro

m

sola

r hea

t gai

n w

hile

als

o pr

ovid

ing

prot

ectio

n fro

m th

e ra

in.

a

y

x

East

and

Wes

t Exp

osur

es

Verti

cal S

hadi

ng

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16.

Vent

ilatio

n Op

enin

g Ar

rang

emen

tTh

e pl

acem

ent a

nd s

ize o

f ven

tilat

ion

open

ings

ha

s an

impa

ct o

n th

e ve

loci

ty o

f the

win

d th

roug

h a

spac

e. T

o m

axim

ize th

e ra

te o

f cro

ss

vent

ilatio

n in

a ro

om, t

he o

ptim

al p

lace

men

t for

w

indo

ws

is o

n op

posi

te w

alls

or a

djac

ent w

alls

. Lo

catin

g in

lets

and

out

lets

on

diffe

rent

wal

ls

allo

ws

the

win

d to

mov

e th

roug

h th

e sp

ace

at

a hi

gher

vel

ocity

whi

le a

lso

cool

ing

mor

e of

the

spac

e. I

f it i

s no

t pos

sibl

e to

hav

e op

enin

gs

in tw

o w

alls

of a

room

, loc

ate

two

open

ings

in

one

wal

l to

allo

w a

ir to

circ

ulat

e be

twee

n th

em.

The

plac

emen

t of o

peni

ngs

in s

ectio

n is

al

so im

port

ant t

o m

ake

sure

that

the

vent

ilatio

n is

mov

ing

acro

ss th

e oc

cupa

nts

of th

e ro

om.

Cool

ing

occu

rs fa

ster

whe

n th

e w

ind

actu

ally

m

oves

acr

oss

the

body

, so

open

ings

loca

ted

in th

e m

iddl

e of

the

room

s ar

e op

timal

to a

llow

w

ind

mov

emen

t in

spac

es o

ccup

ied

peop

le.

The

win

d w

ill fo

llow

the

path

that

it is

giv

en, s

o it

will

flow

bet

wee

n th

e op

enin

gs if

they

are

at

diffe

rent

hei

ghts

in s

ectio

n.

Clim

atic

Con

ditio

n: H

ot a

nd H

umid

Scal

e: B

uild

ing

Resp

onse

: Arr

ange

ven

tilat

ion

open

ings

to

incr

ease

the

rate

of c

ross

ven

tilat

ion

in a

room

.

Disc

oura

ged

Good

Bette

rBe

st

Acce

ptab

leGo

od

Bette

rBe

st

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17.

Vent

ilatio

n Op

enin

g Si

zeVe

ntila

tion

is m

axim

ized

whe

n la

rge

open

ings

are

pl

aced

per

pend

icul

ar to

the

win

d di

rect

ion,

as

it is

a

func

tion

of th

e w

ind

spee

d an

d th

e si

ze o

f the

inle

ts

and

outle

ts.

The

win

d in

Cai

rns

is p

redo

min

antly

fro

m th

e so

uth/

sout

heas

t in

the

mor

ning

and

from

th

e ea

st/s

outh

east

in th

e af

tern

oon,

all

year

long

. Th

eref

ore,

inle

ts s

houl

d be

pla

ced

on th

e so

uthe

rn

and

east

ern

expo

sure

s w

ith o

utle

ts o

n th

e no

rthe

rn

and

wes

tern

exp

osur

es.

The

rate

of a

irflo

w w

ill be

de

term

ined

by

the

smal

ler o

f the

ope

ning

s, th

e in

let

or o

utle

t. In

Cai

rns,

the

area

of t

he o

peni

ngs

need

ed

to e

ffect

ivel

y co

ol a

bui

ldin

g sh

ould

be

betw

een

5 -7

% o

f the

tota

l flo

or a

rea.

For

exa

mpl

e, if

a b

uild

ing

is 1

50 s

quar

e m

etre

s, th

e to

tal a

rea

of in

lets

sho

uld

be 7

.5 –

10.

5 sq

uare

met

res.

Mor

e th

an 5

– 7

%

will

allo

w fo

r mor

e cr

oss

vent

ilatio

n, w

hich

wou

ld

not b

e ba

d in

Cai

rns,

but

5%

sho

uld

be a

min

imum

. Fo

r the

mos

t effi

cien

t cro

ss v

entil

atio

n, h

ave

as fe

w

obst

ruct

ions

, suc

h as

wal

ls, a

s po

ssib

le b

etw

een

the

inle

t and

out

let.

Idea

lly, e

ach

room

will

have

a

win

dwar

d an

d le

ewar

d ex

posu

re.10

Clim

atic

Con

ditio

n: H

umid

Scal

e: B

uild

ing

Resp

onse

: Size

and

loca

te c

ross

ven

tilat

ion

inle

ts

and

outle

ts to

effe

ctiv

ely

cool

the

spac

e us

ing

the

win

d.

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18.

Stac

k Ve

ntila

tion

Stac

k ve

ntila

tion

enha

nces

the

cool

ing

effe

ct

by c

reat

ing

air m

ovem

ent w

ithin

a b

uild

ing

by p

ullin

g ho

t air

up w

ithou

t the

use

of c

ross

ve

ntila

tion.

The

con

cept

is b

ased

on

the

prin

cipl

e th

at w

arm

air

rises

and

coo

l air

sink

s be

caus

e of

thei

r res

pect

ive

dens

ities

. Whe

n w

arm

air

is a

llow

ed to

esc

ape

thro

ugh

high

op

enin

gs in

a s

truct

ure

then

coo

l air

can

repl

ace

it. T

his

desi

gn s

trate

gy is

effe

ctiv

e ev

en w

hen

site

con

ditio

ns d

o no

t per

mit

cros

s ve

ntila

tion

or o

ptim

um o

rient

atio

n fo

r ven

tilat

ion

is n

ot

an o

ptio

n. O

ptim

izing

the

rate

of a

ir flo

w is

a

func

tion

of th

e ve

rtic

al d

ista

nce

betw

een

then

in

let a

nd o

utle

t, th

e he

ight

of t

he s

tack

from

in

let t

o ou

tlet.

Max

imizi

ng th

e ce

iling

heig

ht

of th

e ro

oms

as w

ell a

s th

e he

ight

of t

he s

tack

ar

e bo

th b

enef

icia

l to

capi

taliz

ing

on s

tack

ve

ntila

tion.

The

gre

ater

the

dist

ance

bet

wee

n th

e lo

w o

peni

ngs,

inle

ts, a

nd h

igh

open

ings

, ou

tlets

, the

gre

ater

the

rate

of a

ir flo

w.11

Clim

atic

Con

ditio

n: H

ot a

nd H

umid

Scal

e: B

uild

ing

Resp

onse

: Des

ign

a st

ack

vent

ilatio

n sy

stem

w

hen

site

con

ditio

ns p

rohi

bit s

ucce

ssfu

l cro

ss

vent

ilatio

n to

coo

l the

bui

ldin

g.2.

Br

own

81-2

13.

Br

own

121-

1232

4.

Brow

n 11

4-11

55.

Br

own

107-

108

6.

Brow

n 13

9-14

17.

Br

own

207-

209

8.

Brow

n 14

6-14

99.

Br

own

262-

269

10.

Brow

n 18

2-18

411

. Br

own

185-

187

Refe

renc

es:

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nt P

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esig

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ch 33

Urba

n Pa

ttern

sTh

e ca

se s

tudi

es e

xplo

red

here

, the

citi

es o

f Mia

mi B

each

, USA

; Sao

Pau

lo, B

razil

; Ter

esin

a, B

razil

; and

Ho

ng K

ong,

are

all

loca

ted

in th

e sa

me

tropi

cal w

et a

nd d

ry c

limat

e w

hich

cha

ract

erize

s Ca

irns’

clim

ate,

an

d pr

ovid

e go

od e

xam

ples

of c

limat

e-se

nsiti

ve u

rban

des

ign

tailo

red

to th

eir s

peci

fic c

ircum

stan

ces.

Th

ese

citie

s ar

e us

ed to

illu

stra

te th

e te

chni

ques

des

crib

ed e

arlie

r, in

pra

ctic

al a

pplic

atio

n. T

he fo

llow

ing

diag

ram

s illu

stra

te th

e ur

ban

patte

rns

of th

ese

four

citi

es a

nd d

escr

ibe

the

less

ons

to b

e le

arne

d fro

m

each

. Th

ese

citie

s, th

ough

diff

eren

t in

scal

e an

d st

ruct

ure,

and

uni

que

in th

eir c

onte

xt a

nd h

isto

ry,

dem

onst

rate

that

the

tech

niqu

es d

escr

ibed

ear

lier c

an b

e su

cces

sful

ly a

pplie

d in

resp

onse

to u

niqu

e co

ntex

tual

con

ditio

ns, w

hile

stil

l fol

low

ing

clim

ate-

sens

itive

tow

n pl

anni

ng p

rinci

ples

. Th

ese

case

st

udie

s ar

e re

leva

nt to

Mou

nt P

eter

, in

that

they

illu

stra

te th

e fle

xibi

ility

of th

e te

chni

ques

in s

ucce

ssfu

lly

addr

essi

ng th

e ch

alle

nges

of c

limat

ic-s

ensi

tive

desi

gn in

div

erse

urb

an s

ettin

gs, p

rovi

ng th

at s

peci

fic s

ite

cont

ext s

houl

d no

t det

er th

e ap

plic

atio

n of

thes

e pr

inci

ples

.

Sao

Paul

o, B

razil

Cas

e S

tud

ies

Urba

n Pa

ttern

sAe

rial P

hoto

Plan

Stre

et N

etw

ork

Gree

n Sp

ace

Urba

n Co

mpo

nent

sBl

ocks

Stre

ets

Build

ing

Plac

emen

tBu

ildin

g Ty

pes

Repr

esen

tativ

e Ph

otos

c Go

ogle

Ear

th

Page 35: TROPICAL URBANISM A DESIGN APPROACH TECHNICAL … · Mount Peter • Design Approach Introduction The Mount Peter Design Manual describes and illustrates the impact of tropical wet-dry

Mou

nt P

eter

• D

esig

n Ap

proa

ch 34

Mia

mi B

each

, US

A

Aeria

l Pho

toTh

e ci

ties

of T

eres

ina,

Sao

Pau

lo, M

iam

i Bea

ch, a

nd H

ong

Kong

are

all

dens

ley

popu

late

d ur

ban

area

s. T

he d

iagr

ams

on th

e fo

llow

ing

page

s illu

stra

te th

e ba

sic

prin

cipl

es o

f the

se c

ities

: in

terc

onne

cted

stre

et n

etw

orks

, an

inte

grat

ion

of v

eget

atio

n, a

nd a

div

ersi

ty o

f bui

ldin

g an

d st

reet

ty

pes

the

wor

k to

geth

er to

cre

ate

the

urba

n fa

bric

.

Sao

Paul

o, B

razil

Hong

Kon

g

Tere

sina

, Bra

zilc

Goog

le E

arth

c Go

ogle

Ear

th

c Go

ogle

Ear

thc

Goog

le E

arth

Page 36: TROPICAL URBANISM A DESIGN APPROACH TECHNICAL … · Mount Peter • Design Approach Introduction The Mount Peter Design Manual describes and illustrates the impact of tropical wet-dry

Mou

nt P

eter

• D

esig

n Ap

proa

ch 35

Plan

sTh

e bl

ock

netw

ork

is ty

pica

lly o

rient

ed to

war

d m

ajor

phy

sica

l fea

ture

s, s

uch

as th

e co

ast,

river

s, o

r m

ount

ains

. Th

e m

ajor

stre

ets

in M

iam

i Bea

ch ru

n no

rth

to s

outh

and

so

the

long

er s

ide

of th

e bl

ock

is

orie

nted

alo

ng th

at a

lignm

ent.

Bec

ause

the

coas

tline

on

the

east

and

wes

t sid

es o

f the

isla

nd a

re n

ot p

aral

lel,

maj

or a

venu

es c

hang

e or

ient

atio

n to

rela

te to

the

coas

ts a

nd c

reat

e un

ique

blo

cks

whe

re th

e di

ffere

nt

geom

etrie

s in

ters

ect.

Sao

Pau

lo a

nd T

eres

ina

have

gen

eral

ly s

quar

e bl

ocks

that

are

inte

rsec

ted

by a

venu

es

conn

ectin

g m

ajor

poi

nts

in th

e ci

ties.

Hon

g Ko

ng a

lso

has

an o

rtho

gona

l blo

ck s

truct

ure

on th

e fla

t gro

und

but a

s th

e to

pogr

aphy

incr

ease

s th

e ro

ads

begi

n to

follo

w th

e gr

ade

and

beco

me

mor

e or

gani

c.

Tere

sina

, Bra

zil

Sao

Paul

o, B

razil

Hong

Kon

g

Mia

mi B

each

, USA

Page 37: TROPICAL URBANISM A DESIGN APPROACH TECHNICAL … · Mount Peter • Design Approach Introduction The Mount Peter Design Manual describes and illustrates the impact of tropical wet-dry

Mou

nt P

eter

• D

esig

n Ap

proa

ch 36

Stre

et N

etw

ork

Diag

ram

sTh

e st

reet

net

wor

k pr

ovid

es b

oth

mob

ility

and

the

basi

c ur

ban

stru

ctur

e. A

goo

d st

reet

net

wor

k ar

ticul

ates

a

diffu

se w

eb o

f int

erco

nnec

ting

stre

ets,

allo

win

g m

ultip

le ro

utes

to a

ny d

estin

atio

n, e

asin

g th

e bu

rden

on

maj

or th

orou

ghfa

res.

It a

lso

prov

ides

a n

umbe

r of m

ovem

ent o

ptio

ns, i

ncre

asin

g th

e lik

elih

ood

of

pede

stria

n ac

tivity

. Al

l of t

hese

net

wor

ks h

ave

a cl

ear h

iera

rchy

of s

treet

s an

d a

num

ber o

f diff

eren

t stre

et

type

s.

Sao

Paul

o, B

razil

Hong

Kon

g

Tere

sina

, Bra

zilM

iam

i Bea

ch, U

SA

Page 38: TROPICAL URBANISM A DESIGN APPROACH TECHNICAL … · Mount Peter • Design Approach Introduction The Mount Peter Design Manual describes and illustrates the impact of tropical wet-dry

Mou

nt P

eter

• D

esig

n Ap

proa

ch 37

Gree

n Sp

ace

An e

ssen

tial p

art o

f any

city

is it

s ne

twor

k of

par

ks a

nd g

reen

spa

ces,

whi

ch h

elp

to

cool

the

city

as

wel

l as

prov

ide

conv

enie

nt re

crea

tiona

l opp

ortu

nitie

s fo

r res

iden

ts.

Note

how

gre

en s

pace

s ar

e di

strib

uted

thro

ugho

ut th

ese

citie

s at

regu

lar i

nter

vals

and

at

man

y di

ffere

nt s

cale

s.

Tere

sina

, Bra

zil

Hong

Kon

gSa

o Pa

ulo,

Bra

zil

Mia

mi B

each

, US

A

Page 39: TROPICAL URBANISM A DESIGN APPROACH TECHNICAL … · Mount Peter • Design Approach Introduction The Mount Peter Design Manual describes and illustrates the impact of tropical wet-dry

Mou

nt P

eter

• D

esig

n Ap

proa

ch 38

Urba

n Co

mpo

nent

sEa

ch c

ity is

mad

e up

of a

num

ber o

f co

mpo

nent

s th

at w

ork

in c

once

rt to

cre

ate

an

urba

n en

viro

nmen

t. T

he w

ay in

whi

ch th

ese

com

pone

nts

rela

te a

nd re

spon

d to

eac

h ot

her

dete

rmin

es th

e re

lativ

e co

mfo

rt, b

oth

phys

ical

ly

and

psyc

holo

gica

lly, o

f the

occ

upan

t. B

lock

st

ruct

ure,

stre

et w

idth

, bui

ldin

g pl

acem

ent,

and

build

ing

type

s ar

e th

e m

ajor

com

pone

nts

that

mak

e up

an

urba

n co

ntex

t. B

y co

mbi

ning

ea

ch o

f the

se c

ompo

nent

s, a

nd u

tilizi

ng th

e te

chni

ques

out

lined

ear

lier,

a co

hesi

ve u

rban

fa

bric

can

be

crea

ted

whi

ch re

spon

ds to

a

tropi

cal w

et a

nd d

ry c

limat

e an

d al

so c

reat

es

a ro

bust

urb

an s

ettin

g. T

he c

ities

dia

gram

med

pr

evio

usly

at a

larg

er s

cale

: Mia

mi B

each

, Sa

o Pa

ulo,

Hon

g Ko

ng, a

nd T

eres

ina,

her

e ar

e br

oken

dow

n an

d an

alys

ed fo

r the

ir in

divi

dual

co

mpo

nent

s. T

hese

citi

es, a

ll in

trop

ical

wet

an

d dr

y cl

imat

es, h

ave

feat

ures

that

mak

e th

em

uniq

ue b

ut th

at a

re a

lso

base

d on

trad

ition

al

plan

ning

tech

niqu

es a

nd e

nviro

nmen

tally

re

spon

sive

des

ign.

As

case

stu

dies

, the

se

citie

s pr

ovid

e a

snap

shot

of s

ucce

ssfu

l urb

an

desi

gn in

a tr

opic

al c

limat

e, a

nd e

ach

of th

ese

com

pone

nts

can

be c

ombi

ned

with

oth

ers

as a

ki

t-of-

part

s to

cre

ate

a un

ique

env

ironm

ent.

Page 40: TROPICAL URBANISM A DESIGN APPROACH TECHNICAL … · Mount Peter • Design Approach Introduction The Mount Peter Design Manual describes and illustrates the impact of tropical wet-dry

Mou

nt P

eter

• D

esig

n Ap

proa

ch 39

Tere

sina

, Bra

zil

Sao

Paul

o, B

razil

110-130m 97-1

06m

70-8

2m

82-85

m

A

A

B

D

C

B B

97-1

22m

100m

AB

C

137m

33-

46m A

B

C

Mia

mi B

each

, USA

Bloc

ksA

sim

ple

and

func

tiona

l blo

ck n

etw

ork

is m

ade

up o

f a n

umbe

r of b

lock

s th

at

shou

ld b

e sh

ort e

noug

h fo

r a p

edes

trian

to

com

fort

ably

wal

k. A

net

wor

k of

sho

rt

bloc

ks a

lso

crea

tes

mor

e av

enue

s fo

r w

ind

acce

ss th

roug

h th

e ci

ty, i

ncre

asin

g ve

ntila

tion

on in

divi

dual

lots

and

cre

atin

g co

mfo

rt fo

r the

occ

upan

ts.

All t

he b

lock

s illu

stra

ted

here

are

pro

perly

size

d to

cr

eate

com

fort

able

wal

king

dis

tanc

es

and

corr

espo

nd to

Tec

hniq

ue #

10 S

hort

St

reet

s. O

ften

an o

rtho

gona

l blo

ck

stru

ctur

e is

inte

rrup

ted

by a

venu

es a

nd

maj

or s

treet

s th

at re

late

to e

ither

the

topo

grap

hy a

nd s

ite c

ondi

tions

or c

onne

ct

maj

or p

oint

s in

the

city

. Th

is c

ollis

ion

of

diffe

rent

geo

met

ries

crea

tes

uniq

ue b

lock

s an

d op

port

uniti

es to

pla

ce im

port

ant

build

ings

. Th

e re

ctan

gula

r blo

cks

of M

iam

i Be

ach

crea

te a

cle

ar d

istin

ctio

n be

twee

n th

e m

ajor

and

min

or s

treet

s in

the

city

. Bo

th S

ao P

aulo

and

Ter

esin

a us

e re

lativ

ely

squa

re b

lock

s an

d fa

ce b

uild

ings

ont

o al

l si

de o

f the

blo

ck.

All t

hree

of t

hese

citi

es

have

blo

cks

big

enou

gh to

hav

e de

ep

lots

that

allo

w b

uild

ings

to e

xten

d in

to th

e bl

ock.

In

Hong

Kon

g, th

e sh

ort s

ide

of th

e bl

ocks

hav

e ve

ry p

rohi

bitiv

e di

men

sion

s in

term

s of

flex

ibilit

y. T

he m

ore

orga

nic

bloc

ks in

Hon

g Ko

ng a

re a

resu

lt of

the

stee

p to

pogr

aphy

of t

he s

ite.

Hong

Kon

g

Page 41: TROPICAL URBANISM A DESIGN APPROACH TECHNICAL … · Mount Peter • Design Approach Introduction The Mount Peter Design Manual describes and illustrates the impact of tropical wet-dry

Mou

nt P

eter

• D

esig

n Ap

proa

ch 40Ho

ng K

ong

Sect

ion

ASe

ctio

n B

Sect

ion

C

Tere

sina

, Bra

zil

Sect

ion

A

Sect

ion

B

76

6

2.5

82.

5

67

30.5

4.5

12.2

4.5

661

90

9.2

39.

26.

1

5545

3.6

5.5

25.

53.

64.

55.5

7.2

30.5

612

.23

Stre

ets

The

stre

et n

etw

ork

shou

ld b

e de

sign

ed w

ith a

num

ber o

f diff

eren

t stre

et ty

pes

to c

reat

e a

hier

arch

y of

st

reet

s as

pre

viou

sly

expl

aine

d in

Tec

hniq

ue #

9 Hi

erar

chy

of S

treet

s. A

lso,

as

deta

iled

in T

echn

ique

#

6 W

ide

Stre

ets,

the

sect

ion

shou

ld b

e de

sign

ed w

ith ra

tios

of 1

:1 o

r wid

er.

Beca

use

of th

e po

pula

tion

dens

ity in

Hon

g Ko

ng a

nd la

ck o

f ava

ilabl

e bu

ildab

le s

pace

, stre

et s

ectio

ns a

re v

ery

tall

and

narr

ow a

nd

prev

ent w

ind

from

mov

ing

thro

ugh

the

city

, whi

le a

lso

crea

ting

a ca

nyon

ised

feel

ing

for t

he p

edes

trian

. Th

e se

ctio

ns o

f Ter

esin

a an

d Sa

o Pa

ulo

are

slig

htly

talle

r tha

n 1:

1 bu

t bec

ause

ther

e ar

e a

num

ber o

f sh

ort b

uild

ings

in th

ese

citie

s, th

e w

ind

can

mov

e ov

er th

ese

shor

t bui

ldin

gs a

nd s

till p

rovi

de a

cces

s to

th

e ta

ller b

uild

ings

. Ad

ditio

nally

, the

talle

r bui

ldin

gs p

rovi

de g

ood

shad

e fo

r the

stre

et.

The

shor

t and

w

ide

stre

ets

of M

iam

i Bea

ch a

llow

the

mos

t win

d ac

cess

thro

ugh

the

city

and

are

ver

y co

mfo

rtab

le fo

r th

e pe

dest

rian

but d

o no

t pro

vide

suf

ficie

nt p

rote

ctio

n fro

m th

e su

n so

add

ition

al s

teps

mus

t be

take

n to

pr

ovid

e sh

ade,

as

desc

ribed

in T

echn

ique

#7

Shad

y St

reet

s.