lifecycle wood bridge decks

life-cycle costs of new construction materials - National Institute of ...materials relative to conventional materials. This paper provides a step-by-step. project-based approach based on life-cycle costing. minimum performance requirements. and a cost classication scheme that organizes a construction material's life-cycle cost advantages and disadvantages. A case study example of the method ana- lyzes the cost effectiveness of ber-reinforced-polymer bridge welts relative to reinforced concrete decks. INTRODUCTION. Highway structures are typically ...

Sustainable Bridges and Infrastructure (Part II)Life Cycle Assessment (LCA) is a method to evaluate all the aspects connected with bridge construction and the associated environmental impacts during its entire life span, including such phases like materials acquisition, creation, ... eco-friendly concrete is similar to shorter less sustainable spans.<sup>2</sup> Subsequent LCA studies by others conducted on bridges have also shown concrete to be a favorable environmental building material in comparison to wood and steel alternatives.3, 4, 5.

Opportunities for the use of Aluminum in Vehicular Bridge Constructionbridge construction (i.e. concrete, steel, wood) and has been used successfully on a number of vehicular bridge projects over the years. The current report, which was prepared at the request of the Aluminum. Association of Canada (AAC), starts with a brief history of ... the existing heavy steel and wood deck of the Smithfield Street bridge in Pittsburgh with an aluminum deck ..... Initial construction cost and life-cycle cost comparisons of aluminum structures, including bridges and bridge.

Bridge Life Cycle Cost Optimization - DiVA portalbridge Life Cycle Cost. Optimization. Analysis, Evaluation, & Implementation. MOHAMMED ABED EL-FATAH SAFI. Master of Science Thesis. Stockholm, Sweden 2009 ...... Superstructure : The part of structure which supports traffic (include deck. , slab, and girders). Deck : bridge floor directly carrying traffic loads. Hunching : Increase in the depth of a continuous beam at the point of support to withstand the increased moment of bending on the beam. Transition pier. Pier separating.

Life-Cycle Costs of Fiber-Reinforced-Polymer Bridge Decks.3 Aug 1999 ... decks. This report examines the life~cycle cost-effectiveness of three FRP bridge decks, using a life-cycle cost method specically tailored for comparing new materials with conventional ones. The method includes a cost .... wood-Core FRP. FIG. 1. Foam core (not shown). SCRIMP FRP. Keyed slots for connection to adjacent plank. Hollow cores. Pultruded-Plank FRP. Conventional-Concrete bridge Deck and Three FRP bridge decks. Shear pins form solid load-&nbsp;...

Efficient Load Rating and Quantification of Life-Cycle Damage of ...thickness of the deck is 203.2 mm (8 in.) and the compressive strength of concrete (f c) as 28 N/mm2. (4 ksi). The girders are 914 mm (36 in.) deep American. Association of State Highway and Transportation Offi- cials (AASHTO) Type-II pre-st

Life Cycle Cost of Bridges - Infrastructure Technology Institute2.1 First Generation. The first generation Chicago-type bascule bridges were built between 1900 and 1910 and have tall through-trusses braced over the roadway. The operating machinery and counterweights are below the deck, and each leaf is turned by the action of fixed pinions that rotate and mesh with curved racks on the tail-ends of the three trusses arching above the roadway. Originally, these bridges had simple, wood frame operator houses and were operated manually.

A Dynamic Life Cycle Assessment Tool for Comparing Bridge Deck ...13 Aug 2004 ... A life cycle assessment (LCA) model was developed to compare the sustainability of alternative concrete bridge deck designs: one a conventional steel reinforced concrete. (SRC) deck with mechanical ...... 84. Ecobilan (Ecobilan 2001). Primary Ecobilan sources: Various, 1985-89. wood. 29. 58. 0.6. 0.8. Metric tonnes. 28. Ecobilan (Ecobilan 2001). Primary Ecobilan source: Western wood Products Association (WWPA), 1995. Material. Conv. System. ECC System.

Aluminum Alloys for Bridges and Bridge DecksAluminum alloys have been used in bridge structures since 1933, when the first aluminum bridge deck was used to replace an earlier steel and wood deck on. Pittsburgh's Smithfield Street bridge in order to increase its live-load carrying capacity. While still not considered a standard for bridge structures, aluminum alloys have much to offer for such applications, and continue to be used where their light weight, high strength-to-weight ratio, and excellent corrosion resistance satisfy&nbsp;...

Bridge Deck Design - Federal Highway Administration - US ...17 Nov 2012 ... others. The choice of the particular deck type to use can depend on several factors, which may include the specific application, initial cost, life cycle cost, durability, weight, or owner requirements. For the deck types discussed herein, a brief description of the particular deck type is given, in addition to general design and detail considerations. 17. Key Words. Steel bridge, Deck Design, Concrete Deck, Precast. Concrete Deck, wood Deck, Metal Grid Deck, Orthotropic.

Life Cycle Maintenance Costs: PermaTrak vs. Wood/Composite ...20 Oct 2015 ... For a wooden backyard deck or 10' swale crossing, maintenance costs may just mean a couple of hours Saturday morning powerwashing or re-staining each year (hundreds of dollars, not thousands). But on a commercial boardwalk or pedestrian bridge, having at least a rough "guesstimate" for life cycle maintenance costs is especially important. Due to the large amount of square footage and the heavy usage of the trail or boardwalk system, these maintenance costs&nbsp;...

ETSI Project (Stage 2). Bridge Life Cycle OptimisationETSI PROJECT (Stage 2). bridge Life Cycle Optimisation. Summary. Lauri Salokangas. Helsinki University of Technology (TKK). Faculty of Engineering and Architecture. Department of Structural Engineering and Building Technology ...... Table 6.3. LCC agency cost for the Klenevågen steel bridge. Life span /a = 100. Calculation rent /% = 3. Deck area /m2 = 340. Interval. (years) Cost. Quantity Costs. No of times mp. NPV - factor. Tot cost. %. Tot cost/m2 bridge deck area.

Timber Bridge Economics - National Center for Wood Transportation ...components. Studies that compare timber bridges with bridges made from other materials tend to group all types of timber bridge designs together. However, timber bridges are not uniform. Timber deck bridges should be compared with prestressed concrete slab bridge designs and timber girders to steel girders, for example. Research efforts tend to focus on initial costs as opposed to life-cycle costs. Some studies rely on estimates of expected life as a rough indicator of life-cycle costs&nbsp;...

Life Cycle Assessment of a Norwegian Bridge - bibsys bragebest environmentally on the whole, but when it comes to global warming, the wooden bridge is better than the other two. L. G. San Martin in 2011. [3]. LCA of a Spanish railway bridge is a Master Thesis realized by a KTH student (Stockholm,. Sweden), dealing with the Life Cycle Assessment of a steel arch railway bridge with prestressed concrete decking. All stages are taken into account: material stage ( material extraction, production and distribution), construction (including diesel&nbsp;...

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