VALIDATION REPORT: COMPUTER PROGRAM FOR DESIGN AND ANALYSIS OF INVERTED-T RETAINING WALLS AND FLOODWALLS (TWDA)

This report presents a series of example problems and their solutions that verify the accuracy of computer program TWDA (T wall design/analysis). TWDA is a user-oriented conversationally interactive, modular time-sharing program system for computer-aided structural design and analysis of inverted-T retaining walls and floodwalls founded on earth or rock. The program is divided into three major sections: the executive command phase, the stability group of modules, and the structural group of modules: (a) The executive command phase is where the program starts executing and where it returns to after running the computational modules. Commands and data are entered in this phase of the program; (b) The stability group of computational modules computes active earth pressures and determines overturning and sliding stability; and (c) The structural group of computational modules performs a stress analysis of the wall or designs for minimum slab thicknesses. The philosophy of TWDA is to (a) ensure minimum-cost adequate design based on current codes and criteria, independent of the user's experience, and (b) to promote the use of personal judgment and imagination through man-machine interaction.

• Supplemental Notes:
  • Availability: Microfiche copies only.
• Corporate Authors:

  U.S. Army Waterways Experiment Station

  3909 Halls Ferry Road
  Vicksburg, MS  United States  39180-6199
• Authors:
  • Price, W A
  • Hall, R L
  • Mosher, R L
  • Hamby, C C
  • Veselka, R
• Publication Date: 1981-2

Media Info

• Pagination: 386 p.

Subject/Index Terms

• TRT Terms: Accuracy; Computer aided design; Computer programs; Earth pressure; Flood protection; Human machine systems; Loads; Moments (Mechanics); Overturning; Retaining walls; Rocks; Slabs; Stability (Mechanics); Structural analysis; Structural design; Thickness; User interfaces (Computer science); Walls
• Uncontrolled Terms: Interactive computing; Sliding
• Old TRIS Terms: Low costs; Man machine interaction; Moments
• Subject Areas: Bridges and other structures; Design; Geotechnology; Highways; Safety and Human Factors; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00343429
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: WES-INSTRUCTION-K813Final Rpt.
• Files: TRIS
• Created Date: Oct 28 1981 12:00AM