Develop an Interactive Unit Price Estimation and Visualization Tool: Final Report

Details

• Creators:
  Shahandashti, Mohsen ; Yasar, Mahmut ; Bhattarai, Anita ; Acharya, Santosh ; Roy, Abhijit ; Bhatta, Sushil ; Paydarzarnaghi, Mahnaz ; Khodahemmati, Kayvon
• Corporate Creators:
  University of Texas at Arlington. Department of Civil Engineering
• Corporate Contributors:
  Texas Department of Transportation. Research and Technology Implementation Office ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  Analysis Bids Budgeting Estimation Theory Geographic Information Systems Interactive Computer Systems Unit Costs Visualization
• Publication/ Report Number:
  FHWA/TX-26/0-7184-1
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Texas
• Edition:
  Final Report: August 2023–August 2025
• Corporate Publisher:
  Texas Department of Transportation. Research and Technology Implementation Office
• Abstract:
  Texas Department of Transportation (TxDOT) determines unit prices of pay items using the historical bids-based estimation method and then develops an engineer’s project appraisal. The engineer's estimate is used to assess the bids and select the bidder. However, the unit price of a work item is heavily affected by various project-specific and external factors, including but not limited to the project location, the quantity of the work, project complexity, time factors, and macroeconomic conditions. Therefore, accurate and reliable unit price estimation based on these project-specific and external factors is vital for the optimum use of the available project budget. The project objectives included: (1) conducting an overview analysis of factors affecting unit prices, (2)identifying factors affecting unit prices in Texas, (3) creating a unit price estimation database, (4) creating as patio-temporal unit price estimation model considering the factors affecting unit prices, (5) developing a GIS-based visualization tool, and (6) implementing, demonstrating, and validating the interactive unit price estimation and GIS-based visualization tool on six Receiving Agency’s projects. The models that are developed based on the identified factors affecting unit prices help enhance accurate and reliable unit price estimation. Moreover, the developed GIS-based unit price visualization tool can be used for a quick retrieval of unit price values across various geographical locations. The tool helps track changes in data over time, by county, and across projects, as well as changes in the quantity of work items.
• Format:
  PDF
• Funding:
  0-7184
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:c5668483ed8ab0a9b75a17e13e36ed63265f0c172fb96a3baf9c1ba08540dabe6a3160bc87f546ad81ece87ef1bb1f62d07443c3a8f27e1624c2807a0268fed3
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/86896/dot_86896_DS1.pdf
• File Type:
  [PDF - 6.46 MB ]