Towards bigger buildings

(1)

Towards bigger buildings

Estonian Wood Day

8 th

_{November 2012}

(2)

Why bigger buildings?

(3)

Customer opinion

0

10

20

30

40

50

60

70

80

90

100 Vähintään tyytyväisiä

Satisfaction rate %

FWR/TTY survey 2011:

• 6 buildings from 1996 – 2003

• Flats 157 (24 % of all)

• 118 answers (75 %)

• Owners 58%

• Rentals 42%

(4)

-100000 -80000 -60000 -40000 -20000 0 20000 40000 60000 80000 100000 0 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60 64 68 72 76 80 84 88 92 96 10 0 Flerbostadshus Småhus

De flesta barn i Sverige föds

till småhusboende….

…vi lever som familj i ett

småhus…

…vi flyttar till

flerbostadshus som första

egna hem….

…vi rör oss så småningom

mot flerbostadshuset när

barnen flugit ut…..

Här finns nu en växande industribyggsektor som siktat in sig på den

bostadsmarknad som kommer att växa i framtiden….

Population breakdown by age in relation

with Housing

(5)

Vi minskar våra “ansvarsår”……

Personer födda mellan 1945 och 1954 tänker i första hand

förverkliga sig själva……… (

Källa: Kairos Future

)

ålder

20

40

60

80 År 1920

År 1960

År 2000

År 2040

70

50

30 Barndom

Befrielsetid

Frihetstid

Ansvarsår

Ålderdom

Block of flats are needed more because...

(6)

Vi skapar oss mer “frihetstid”……

Åren i livsfaser där man i hög grad lever singel och i

flerfamiljshus ökar………

ålder

20

40

60

80 År 1920

År 1960

År 2000

År 2040

70

50

30 Livstid och livsstil där boende i flerfamiljshus dominerar

Barndom

Befrielsetid

Frihetstid

Ansvarsår

Ålderdom

The population group, which typically

lives in block of flats, is growing.

(7)

7

0 2000

4000

6000

8000

10000

12000

14000

0

10

20

30

40

50

60

70

80

90

100 Puun osuus

runkorakenteissa %

Puun osuus

ulkoverhouksissa %

Markkinoiden

kokonaisvolyymi

(1000 m3)

The biggest potential is where

decisions are made professionally and

where the buildings are big

Source: Tilastokeskus, Rakentamisen tilastot. VTT

Market share of

wood in frames %

Market share of

wood in facades %

Total potential

(1000m3)

(8)

Wood construction serves the raw material

supply of the whole forest industry

(9)

Wood constructions’ impact on national

economy

What will happen to our economy, if we increase use of wood in construction

12.11.2012 Lähde: PTT, Puurakentamisen yhteiskunnalliset vaikutukset

-1,5 % -1,0 % -0,5 % 0,0 % 0,5 % 1,0 % 1,5 % Välituotteiden tuotanto Suomessa Välituotteiden tuonti Palkansaaja-korvaukset Toiminta-ylijäämä,

netto Arvonlisäys Tuotos Työpanos

(10)

1 Internationally relevant reference buildings

2 Most advanced

building

regulations

3 Top competence

and know how

4 Proprietary

solutions for new

construction and

renovations

2009

Internationally competitive

wood construction industry

(11)

Demand according the town plans (m

2 ₎

= about 7700 flats until 2015

(12)

New fire codes give significant new potential!

12.11.2012

1

2

3 ₄

(13)

12.11.2012 Mikko Viljakainen

1997

B

-s2

,

d

0 D

-s2

,

d

0 • P2 fire class maximum 8 storeys

• Sprinkler system is required

• K

₂

10 or K

₂

30 fire protected structures

• A-class insulation materials

• Special requirements for eaves, wooden

facades (flame traps), emergengy exits,

balconies

2011

(14)

Town houses up to 4 floors

1997

B

-s2

,

d

0 D

-s2

,

d

0 • P2 fire class maximum 4 storeys

• Fire protections of the structures K

₂

30 • A-class insulation materials

• No sprinkler system requirement

(15)

Max. 4 storey concrete frame

1997

2011

• D-s2, d0 (wood) facades up to 4 floors

• Ground floor minimum B-s2, d0 (fire protected wood) .

• B-s2, d0 (fire retardant treated wood) facades up to 8 floors

• No sprinkler system requirement

B

-s2

,

d

0 D

-s2

,

d

0

(16)

Max. 7 storey concrete frame

12.11.2012

1997

Mikko Viljakainen

2011

• D-s2, d0 class (wood) extra floor

• B-s2, d0 (fire retardant treated wood)

facades up to 8 floors

• No sprinkler system requirement

B

-s2

,

d

0 D

-s2

,

d

0

(17)

12.11.2012 Titta Vuori, Modelark

Competence and

know how on

(18)

(19)

New industrial construction methods

(20)

Hybrid technology

(21)

(22)

(23)

(24)

(25)

(26)

(27)

(28)

CLT (Cross Laminated Timber )

(29)

(30)

(31)

(32)

(33)

Post and beam technology

(34)

(35)

(36)

(37)

(38)

(39)

Volume elements

(40)

Renovation of old blocks of flats is

significant potential

(41)

Case example of new fire codes –

present situation

Weaknesses

•Weak technical condition and

energy performance

•No elevator

•Small flats have no balconies

•Dark ground floor with no

windows

•No ventilation of it is very weak

•Considered ugly, bad image of

the areas

Potential

•Good location with well

established infrastructure and

services

•Typical low density of milieu

allows additional building

volumes

•Bulky flats and rooms

•Durable and well performing

skeleton of the building

(42)

Potential of wood

•Better energy performance

and surface for the building

with

low CO

₂

emissions

•New visual appearance and

shape of the building –

new

image

•Extra floor(s) and new roof

shape – income to finance

elevator and other renovation

works

•New balconies

•Hi-level prefabrication and

industrially controlled quality

of t he components.

•Very

fast assembly

to reduce

the harm for residents.

•Visual wood is favoured

material.

•Cost competitive.

(43)

AFTER

(44)

AFTER

(45)

Cost competitiveness – Exterior walls

Source ISS Proko Oy, Index (Haahtela) 1/2011 HELSINKI KL79

0

50

100

150

200

250

300 Wood facade

and frame

Brick cladding

Ceramic tiles

Thin Steel

plates with

steel frame

Plastering

175mm

insulation

€/m2

Demolition works and design costa are not included. All structures ful fill the same energy perfomance