Holistic Approach to Sustainable Bridge Procurement Considering LCC, LCA, Lifespan, User-Cost and Aesthetics: Case Study
(English)Manuscript (preprint) (Other academic)
An efficient procurement method is the primary initiator of sustainablebridge infrastructures. Several proposals could provide technically feasiblesolutions for a bridge in a certain location, all of which may provide therequired function, but differ substantially in life-cycle cost (LCC), servicelife-span, user-cost, aesthetic merit and environmental impact. A newparameter, LCC Added-Value, has been recently developed to facilitateprocurement of the most LCC-efficient alternative through fair design-build(D-B) tendering. However, integration of environmental, aesthetic and user-costconsiderations in bridge procurement decisions is also required. This paperintroduces a holistic procurement approach designed to enable procurement ofthe most sustainable (lifecycle-efficient) bridge under D-B contracts. Theapproach combines LCC Added-Value analysis with other novel techniques thatmake proposals’ aesthetic merit and environmental impact commensurable, therebyenabling agencies to establish monetary benchmarks concerning those aspects inan early planning phase and embed them in the tender documents as corespecifications. The lowest net equivalent LCC bid could then be used as thecontract award criterion. A presented case study illustrates the practicalimplementation of the approach, addresses roles of both contractors andagencies in it, provides insights into the various bridge aspects and identifiesshortcomings requiring further attention.
Bridge, Procurement, Life Cycle Cost Analysis, Life Cycle Assessment, Sustainable, User Cost, Aesthetic, Contract, Tender, Repair, LCC, LCA.
Civil Engineering Environmental Engineering Environmental Biotechnology Industrial Biotechnology Agricultural Sciences
Research subject Järnvägsgruppen - Infrastruktur; SRA - Production; SRA - Transport; The KTH Railway Group - Tribology
IdentifiersURN: urn:nbn:se:kth:diva-133233OAI: oai:DiVA.org:kth-133233DiVA: diva2:660278
QS 20132013-10-292013-10-292015-03-11Bibliographically approved