Tabula conveyance system cost estimating software

Tabula is a computer program that has been developed for use by King County staff and consultants to provide conveyance cost estimates at the planning level. This software can be downloaded (refer to Task Memos below) and used to perform cost estimating with technical reports. User documentation is also available for download.

You will need a PDF Reader to view user documentation and technical memos.

• Now posted: Tabula Version 3.1.2, November 10, 2010 (2 MB) - subject to terms of the End User License Agreement
• Note: the previous version of Tabula (Version 3, issued April 6, 2009) is available for download here (15.9MB)
• Administrators Guide, Version 3, May 2009 (713 KB)
• User Guide, Version 3, April 28, 2009 (383 KB)

Cost estimate and cost parameter technical memorandums

All work documented in the Task 1 through 5 memos was done by Brown and Caldwell’s Seattle office under contract to the King County Wastewater Treatment Division (WTD). The Tabula program itself is owned by WTD - and as such, can be made available to the public free of charge. The following documents are in PDF format.

• Task 1—Revise/Update Existing Wastewater Capital Construction Cost Estimates, January 7, 2009
  The Task 1 memo summarizes the research and analyses to update construction unit costs within the Tabula Program. The associated appendices contain the actual updated unit costs that were input into Tabula.
• Appendix A: Fixed Cost Parameters
• Appendix B: Pipe Material and Installation Costs
• Appendix C: Manhole Costs
• Appendix D: Right of Way Acquisition & Easments
• Appendix E: Dewatering, Traffic Control & Utility Conflicts
• Appendix F: Trenchless Technology Costs
• Appendix G: Tunneling Costs
• Appendix H: Pump Station Costs & Curves
• Appendix I: Storage Facility Costs & Curves
  
• Task 2—Implement Program Corrections, Modifications, and Improvements Related to Program Appearance and Cost Detail Presentation, January 7, 2009
  The Task 2 memo identifies corrections and fixes to TABULA 2.0 for cost details and read/write functions of input data and assumptions
  
• Task 3—Identify, Research, and Add New Unit Cost Components to Tabula for Reclaimed Water Distribution, January 7, 2009
  The Task 3 Memo contains information on the assumptions and unit costs for adding the reclaimed water distribution system module to Tabula.
  
• Task 4—Add New Unit Costs for Easements, Acquisitions, and Culverts to Component Modules, January 7, 2009
  The Task 4 Memo contains information on how variable costs for easements and acquisitions were determined in addition to supporting information on the new culvert module.
  
• Task 5—Memo, Review and Test Tabula Program, January 7, 2009
  The Task 5 Memo summarizes how the updated Tabula program was tested to determine its cost estimating accuracy.