TY - BOOK
T1 - Life-cycle-cost optimised wooden multi-storey apartment building Nordic Wood, Phase 2, Project P-2
T2 - Final report
AU - Leppänen, Pekka
AU - Pulakka, Sakari
AU - Saari, Mikko
AU - Viitanen, Hannu
N1 - Project code: R7SU00771
PY - 1999
Y1 - 1999
N2 - The aim of this project was to develop a concept of a
wooden multi-storey apartment building which is
competitive with equivalent buildings made of other
materials. The point of view has been that of the house
owner, the investor. He is interested not o
ly in the investment costs but also in the operating
costs as well as in the resale price of the building. In
this research, the life span of the building is limited
to 50 years.
The wooden multi-storey apartment building has to be not
only competitive to build but especially clearly cheaper
to operate. The Finnish statistics show that about 2/3 of
the operating costs come from energy, management, water
and annual repairs. The m
jor components, about 3/4 of the annual repairs are
exterior surfaces, mechanical systems and interior
surfaces and structures.
Thus, the research has concentrated on developing and
analyse long-lasting wooden facades and life-cycle cost
optimised envelope structures. Simplifying and decreasing
the number of various components has proved in other
industries to be an effective wa
of decreasing the investment and operating costs, and
this is true also in the construction industry. And last
but not least, the overall quality of the wooden
multi-storey apartment building should transmit a
positive image to the owner and the tenant
of a better product than that of the competitors.
The results of this research work show that the main
properties of a life-cycle-cost optimised wooden
multi-storey apartment building are as follows:
· The investment costs of a wooden multi-storey
low-energy apartment building are some 4 % higher than
those of the present building practise. Due to lower
energy costs, the payback time of extra investment costs
is only 15 years when calculated using p
esent energy prices
· The "high performance" facade is more profitable than a
"normal" one. There are various alternatives for "high
performance" facades. The main factor for the durability
of the wooden facade is
"wood-paint-structure-environment-manufacture". When all
th
se factors are optimised, a long lifetime can be achieved
· The improved thermal insulation capacity of the
envelope allows simplified mechanical (HVAC) and
electrical systems. This results in a more effective use
of space, lower investment and running costs
· The danger of water leakages decreases when the number
of water system components decreases. The remaining
components are gathered up in watertight units as far as
possible and installed so that a possible leakage can be
rapidly and easily noticed.
These results will be tested in a pilothouse project to
be built as a separate project in Kerava. The state of
this project in September 1999 is presented in Chapter 6.
AB - The aim of this project was to develop a concept of a
wooden multi-storey apartment building which is
competitive with equivalent buildings made of other
materials. The point of view has been that of the house
owner, the investor. He is interested not o
ly in the investment costs but also in the operating
costs as well as in the resale price of the building. In
this research, the life span of the building is limited
to 50 years.
The wooden multi-storey apartment building has to be not
only competitive to build but especially clearly cheaper
to operate. The Finnish statistics show that about 2/3 of
the operating costs come from energy, management, water
and annual repairs. The m
jor components, about 3/4 of the annual repairs are
exterior surfaces, mechanical systems and interior
surfaces and structures.
Thus, the research has concentrated on developing and
analyse long-lasting wooden facades and life-cycle cost
optimised envelope structures. Simplifying and decreasing
the number of various components has proved in other
industries to be an effective wa
of decreasing the investment and operating costs, and
this is true also in the construction industry. And last
but not least, the overall quality of the wooden
multi-storey apartment building should transmit a
positive image to the owner and the tenant
of a better product than that of the competitors.
The results of this research work show that the main
properties of a life-cycle-cost optimised wooden
multi-storey apartment building are as follows:
· The investment costs of a wooden multi-storey
low-energy apartment building are some 4 % higher than
those of the present building practise. Due to lower
energy costs, the payback time of extra investment costs
is only 15 years when calculated using p
esent energy prices
· The "high performance" facade is more profitable than a
"normal" one. There are various alternatives for "high
performance" facades. The main factor for the durability
of the wooden facade is
"wood-paint-structure-environment-manufacture". When all
th
se factors are optimised, a long lifetime can be achieved
· The improved thermal insulation capacity of the
envelope allows simplified mechanical (HVAC) and
electrical systems. This results in a more effective use
of space, lower investment and running costs
· The danger of water leakages decreases when the number
of water system components decreases. The remaining
components are gathered up in watertight units as far as
possible and installed so that a possible leakage can be
rapidly and easily noticed.
These results will be tested in a pilothouse project to
be built as a separate project in Kerava. The state of
this project in September 1999 is presented in Chapter 6.
KW - apartment buildings
KW - wooden structures
KW - multi-storey buildings
KW - timber
KW - life-cycle costs
KW - LCA
KW - service life
KW - facades
M3 - Report
SN - 951-38-5605-4
T3 - VTT Tiedotteita - Meddelanden - Research Notes
BT - Life-cycle-cost optimised wooden multi-storey apartment building Nordic Wood, Phase 2, Project P-2
PB - VTT Technical Research Centre of Finland
CY - Espoo
ER -