TTI Wave Equation Program, with MICROWAVE Program

The "TTI family" of wave equation programs was originally developed at Texas A&M University in the 1960's, based on the original Smith program which in turn was developed at Raymond Concrete Pile Company. Until the 1980's it was the dominant wave equation program used (in the U.S. at least,) when it was overtaken by the WEAP program. Background of the TTI Program
Dynamic Behavior of Piling	L.L. Lowery, Jr. Texas A&M University 1967 The objectives of the research contained in this dissertation are as follows: To review and summarise Smith's original method of analysis and to derive a more general solution. To determine how the numerical solution is affected by the elasticity of the ram. To compare results given by the wave equation with those determined by laboratory experiments and field tests. To illustrate the significance of the parameters involved, incluidng cushion stiffness and damping, ram velocity, material daming in the pile, soil damping and quake, and to determine the quantitative effect of these parameters where possible. To show how the wave equation can be used to determine the dynamic or impact characteristics of the materials involved. To determine the dynamic properties of the cushion subjected to impact loading. To study the effect of internal damping in the pile and its significance.
Pile Driving Analysis: State of the Art	L.L. Lowery, Jr., T.J. Hirsch, T.C. Edwards, H. M. Coyle, and C.H. Samson, Jr. Texas Transportation Institute Research Report 33-13 January 1969 The broad objective of this report was to fully develop the computer solution of the wave equation and its use for pile driving analysis, to determine values for the significant parameters involved to enable engineers to predict driving stresses in piling during driving, and to estimte the static soil resistance to penetration on piling at the time of driving from driving resistance records. With this study, wave equation analysis of pile driving became a practical reality. Virtually all of the basic issues relating to the basics of wave mechanics in piles and their application were analysed in this study. It is also the most complete single reference on the history and details of the TTI wave equation program.
MICROWAVE Wave Equation Program
For technical assistance, contact: Dr. Lee L. Lowery, Jr., P.E. Department of Civil Engineering Texas A&M University College Station, Texas 77843-3136 409-845-4395 e-mail: Lowery@tamu.edu (c) 1993 Wild West Software 2905 South College Bryan, Texas 77801	MICROWAVE is the latest version of the TTI Wave Equation Program. It was developed at Texas A&M University and is considered by some to be the definitive version of the wave equation for piles. vulcanhammer.net presents it courtesy of Dr. Lee L. Lowery, Jr., of Texas A & M. Click here to download the Microwave Program Also available is the documentation for the program, which is also an excellent reference on the wave equation in general. You will need Adobe Acrobat to view this documentation. Click here to download Microwave Documentation
MICROWAVE is downloaded and installed as follows: Create a directory for MICROWAVE. Download the ZIP file into the directory you have created by clicking on the program name below. Using an appropriate program (such as PKZIP or WinZip,) extract the files into the same directory. Permission granted to copy both software and user's manuals so long as original author credits remain. The above plugin plays the "Aggie War Hymn."

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