Lean production of cost optimal wooden nZEB

Sakari Pulakka (Corresponding Author), Sirje Vares, Esa Nykänen, Mikko Saari, Tarja Häkkinen

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Abstract

The paper studies lean construction as a co-operational way of working to achieve nZEB targets and good indoor climate and to find new innovative combinations of building solutions. Main target of this paper is to assess energy efficiency, resource efficiency and economics of lean wooden nZEB compared to traditional wooden apartments. The results are based on lean construction literature survey, interviews and two case studies. According to a case calculation lean production of cost optimal wooden nZEB causes only about 115 /m2 additional investment cost compared to construction, which only fulfils the minimum requirements as defined by building regulations. Annual savings in energy cost is about 8 /m2 as present value. The annual life cycle cost is about 5 /m2 as present value for the calculation period of 30 years. Also resale value and user-value (aesthetic value, thermal comfort, high quality of inner climate and good adjustable lightning) are a little higher compared to the traditional building. Calculations show that the total productivity of lean construction is about 20% better than of basic construction in both assessment cases.
Original languageEnglish
Pages (from-to)202-211
JournalEnergy Procedia
Volume96
DOIs
Publication statusPublished - 2016
MoE publication typeA1 Journal article-refereed
EventSBE16 Tallinn and Helsinki Conference, Build Green and Renovate Deep 2016 - Tallinn, Estonia
Duration: 5 Oct 20167 Oct 2016
http://www.sbe2016.org/

Fingerprint

Costs
Thermal comfort
Lightning
Energy efficiency
Life cycle
Productivity
Lean production
Economics

Keywords

  • lean production
  • labour productivity
  • investment cost
  • life cycle economics
  • nearly Zero Energy Buildings
  • nZEB

Cite this

Pulakka, Sakari ; Vares, Sirje ; Nykänen, Esa ; Saari, Mikko ; Häkkinen, Tarja. / Lean production of cost optimal wooden nZEB. In: Energy Procedia. 2016 ; Vol. 96. pp. 202-211.
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Lean production of cost optimal wooden nZEB. / Pulakka, Sakari (Corresponding Author); Vares, Sirje; Nykänen, Esa; Saari, Mikko; Häkkinen, Tarja.

In: Energy Procedia, Vol. 96, 2016, p. 202-211.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Lean production of cost optimal wooden nZEB

AU - Pulakka, Sakari

AU - Vares, Sirje

AU - Nykänen, Esa

AU - Saari, Mikko

AU - Häkkinen, Tarja

PY - 2016

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AB - The paper studies lean construction as a co-operational way of working to achieve nZEB targets and good indoor climate and to find new innovative combinations of building solutions. Main target of this paper is to assess energy efficiency, resource efficiency and economics of lean wooden nZEB compared to traditional wooden apartments. The results are based on lean construction literature survey, interviews and two case studies. According to a case calculation lean production of cost optimal wooden nZEB causes only about 115 /m2 additional investment cost compared to construction, which only fulfils the minimum requirements as defined by building regulations. Annual savings in energy cost is about 8 /m2 as present value. The annual life cycle cost is about 5 /m2 as present value for the calculation period of 30 years. Also resale value and user-value (aesthetic value, thermal comfort, high quality of inner climate and good adjustable lightning) are a little higher compared to the traditional building. Calculations show that the total productivity of lean construction is about 20% better than of basic construction in both assessment cases.

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KW - labour productivity

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KW - nearly Zero Energy Buildings

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