Life-cycle-cost optimised wooden multi-storey apartment building Nordic Wood, Phase 2, Project P-2: Final report

Pekka Leppänen, Sakari Pulakka, Mikko Saari, Hannu Viitanen

Research output: Book/ReportReport

Abstract

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.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages74
ISBN (Electronic)951-38-5606-2
ISBN (Print)951-38-5605-4
Publication statusPublished - 1999
MoE publication typeD4 Published development or research report or study

Publication series

SeriesVTT Tiedotteita - Meddelanden - Research Notes
Volume1994
ISSN1235-0605

Fingerprint

Wooden buildings
Life cycle
Facades
Costs
Operating costs
Repair
Water
Thermal insulation
Energy management
Construction industry
Paint
Wood
Durability
Statistics

Keywords

  • apartment buildings
  • wooden structures
  • multi-storey buildings
  • timber
  • life-cycle costs
  • LCA
  • service life
  • facades

Cite this

Leppänen, P., Pulakka, S., Saari, M., & Viitanen, H. (1999). Life-cycle-cost optimised wooden multi-storey apartment building Nordic Wood, Phase 2, Project P-2: Final report. Espoo: VTT Technical Research Centre of Finland. VTT Tiedotteita - Meddelanden - Research Notes, Vol.. 1994
Leppänen, Pekka ; Pulakka, Sakari ; Saari, Mikko ; Viitanen, Hannu. / Life-cycle-cost optimised wooden multi-storey apartment building Nordic Wood, Phase 2, Project P-2 : Final report. Espoo : VTT Technical Research Centre of Finland, 1999. 74 p. (VTT Tiedotteita - Meddelanden - Research Notes, Vol. 1994).
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Leppänen, P, Pulakka, S, Saari, M & Viitanen, H 1999, Life-cycle-cost optimised wooden multi-storey apartment building Nordic Wood, Phase 2, Project P-2: Final report. VTT Tiedotteita - Meddelanden - Research Notes, vol. 1994, VTT Technical Research Centre of Finland, Espoo.

Life-cycle-cost optimised wooden multi-storey apartment building Nordic Wood, Phase 2, Project P-2 : Final report. / Leppänen, Pekka; Pulakka, Sakari; Saari, Mikko; Viitanen, Hannu.

Espoo : VTT Technical Research Centre of Finland, 1999. 74 p. (VTT Tiedotteita - Meddelanden - Research Notes, Vol. 1994).

Research output: Book/ReportReport

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

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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 -

Leppänen P, Pulakka S, Saari M, Viitanen H. Life-cycle-cost optimised wooden multi-storey apartment building Nordic Wood, Phase 2, Project P-2: Final report. Espoo: VTT Technical Research Centre of Finland, 1999. 74 p. (VTT Tiedotteita - Meddelanden - Research Notes, Vol. 1994).