A life cycle cost estimation model for FRP bridge decks [electronic resource] /
A Life Cycle Cost Estimation Model For FRP Bridge Decks
This research developed a prototype life cycle cost-estimating model for FRP bridge
decks called “bridgeMATE”. The model considers the agency costs, user costs and the
third party costs to establish the life cycle cost of an FRP bridge deck. The model
features two condition indices for maintenance and for repair that can estimate the
condition of the bridge deck in any given year. Based on the limiting values set on the
indices, a decision for maintenance and repair is made when the index value for a year
exceeds the limiting value. These limiting values can be entered by the user or default
values, the model suggests may be used. Two kinds of repair strategies are considered,
one putting an overlay on the bridge deck and the other is replacing the deck. Based on
the repair strategy selected, both the condition indices are reduced to represent the
improvement in the quality of the bridge deck.
“BridgeMATE”, features a risk analysis module that considers the risk of errors in
estimating the life cycle cost and also calculates the estimated life cycle cost. This
model calculates the salvage value of the bridge deck at the end of the planning horizon.
The salvage value is calculated by estimating all future costs beyond the planning horizon
of the bridge deck till the end of its useful service life and then discounting these costs
back to the present worth at the end of the planning horizon. This cost is further
discounted back to year 0 and subtracted from the life cycle cost of the deck.
This model can be used as a preliminary tool for comparison of the life cycle cost of
different FRP bridge deck components.
School:West Virginia University
School Location:USA - West Virginia
Source Type:Master's Thesis
Keywords:bridges life cycle costing
Date of Publication: